Android 天气APP(二十九)壁纸设置、图片查看、图片保存
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效果图
一、前情提要
最近收到一些用户的反馈,内容是背景更换这个功能用的不是很舒服,至于为什么不舒服,说不上来。之前我是奔着功能实现去做的,所以很多的细节并没有想的太多,思虑再三之后打算重新做一个更换背景的功能。
二、正式开发
从上面的效果图来看,一步一步分析,第一个就是点击主页面右上角的加号会出出现一个弹窗,这里我把原来的背景管理给隐藏掉了,新增了一个壁纸管理的TextView,所以先打开window_add.xml,在里面新增如下代码:
<TextView
android:id="@+id/tv_wallpaper"
android:gravity="center"
android:layout_width="@dimen/dp_140"
android:layout_height="@dimen/dp_48"
android:text="壁纸管理"
android:foreground="@drawable/bg_white"
android:textColor="@color/black"
android:textSize="@dimen/sp_16"/>
然后回到MainActivity,在showAddWindow方法中,初始化刚才的TextView
然后给一个点击事件
wallpaper.setOnClickListener(view -> {//壁纸管理
startActivity(new Intent(context, WallPaperActivity.class));
mPopupWindow.dismiss();
});
你会发现没有这个WallPaperActivity,所以在app下的ui包中新增WallPaperActivity,它的布局文件为activity_wall_paper.xml,现在我们可以通过主页面进入到这个壁纸管理页面了,首先看看这个页面的效果是怎么样的。
整理效果就是页面上滑动时顶部标题、和底部的浮动按钮上滑隐藏,下滑则显示。这里其实我分了两部分做,第一步是上面的标题,这个可以通过布局来解决,那就是协调布局。
现在该activity_wall_paper.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:fitsSystemWindows="true"
tools:context=".ui.WallPaperActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp"
android:theme="@style/ThemeOverlay.AppCompat.Light">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:contentInsetLeft="@dimen/dp_16"
app:layout_constraintEnd_toEndOf="parent"
app:layout_scrollFlags="scroll|enterAlways"
app:navigationIcon="@mipmap/icon_return"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
<!--标题-->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="壁纸"
android:textColor="@color/black"
android:textSize="@dimen/sp_18" />
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<!--壁纸列表-->
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:overScrollMode="never"
android:padding="@dimen/dp_5"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
现在呢?我们上滑这个RecyclerView的时候,顶部的Toolbar就会向上隐藏,下滑就会马上显示出来,不过因为我们的RecyclerView里面并没有数据,如果要填充数据进去。
1. 列表数据填充
这里我是从网络上找到的一个免费的壁纸接口,这里也分享给大家,地址如下:
http://service.picasso.adesk.com/v1/vertical/vertical?limit=30&skip=180&adult=false&first=0&order=hot
可以直接在浏览器请求这个地址,然后拿到返回的Json数据生成一个实体bean。下面在app的bean包下新建一个WallPaperResponse.java
里面的代码如下:
package com.llw.goodweather.bean;
import java.util.List;
/**
* 壁纸列表返回实体
*
* @author llw
*/
public class WallPaperResponse {
/**
* msg : success
* res : {"vertical":[{"preview":"http://img5.adesk.com/5e26fed9e7bce75ebd2c449d","thumb":"http://img5.adesk.com/5e26fed9e7bce75ebd2c449d?imageMogr2/thumbnail/!350x540r/gravity/Center/crop/350x540","img":"http://img5.adesk.com/5e26fed9e7bce75ebd2c449d?imageMogr2/thumbnail/!720x1280r/gravity/Center/crop/720x1280","views":0,"cid":["4ef0a35c0569795756000000"],"rule":"?imageMogr2/thumbnail/!$<Width>x$<Height>r/gravity/Center/crop/$<Width>x$<Height>","ncos":6,"rank":51169,"source_type":"vertical","tag":[],"url":[],"wp":"http://img5.adesk.com/5e26fed9e7bce75ebd2c449d","xr":false,"cr":false,"favs":830,"atime":1.580187618E9,"id":"5e26fed9e7bce75ebd2c449d","store":"qiniu","desc":""},{"preview":"http://img5.adesk.com/5ed61fd2e7bce75e7ef4c0ed","thumb":"http://img5.adesk.com/5ed61fd2e7bce75e7ef4c0ed?imageMogr2/thumbnail/!350x540r/gravity/Center/crop/350x540","img":"http://img5.adesk.com/5ed61fd2e7bce75e7ef4c0ed?imageMogr2/thumbnail/!720x1280r/gravity/Center/crop/720x1280","views":0,"cid":["4fb479f75ba1c65561000027"],"rule":"?imageMogr2/thumbnail/!$<Width>x$<Height>r/gravity/Center/crop/$<Width>x$<Height>","ncos":0,"rank":7860,"source_type":"vertical","tag":[],"url":[],"wp":"http://img5.adesk.com/5ed61fd2e7bce75e7ef4c0ed","xr":false,"cr":false,"favs":71,"atime":1.591337416E9,"id":"5ed61fd2e7bce75e7ef4c0ed","store":"qiniu","desc":""}]}
* code : 0
*/
private String msg;
private ResBean res;
private int code;
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public ResBean getRes() {
return res;
}
public void setRes(ResBean res) {
this.res = res;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public static class ResBean {
private List<VerticalBean> vertical;
public List<VerticalBean> getVertical() {
return vertical;
}
public void setVertical(List<VerticalBean> vertical) {
this.vertical = vertical;
}
public static class VerticalBean {
/**
* preview : http://img5.adesk.com/5e26fed9e7bce75ebd2c449d
* thumb : http://img5.adesk.com/5e26fed9e7bce75ebd2c449d?imageMogr2/thumbnail/!350x540r/gravity/Center/crop/350x540
* img : http://img5.adesk.com/5e26fed9e7bce75ebd2c449d?imageMogr2/thumbnail/!720x1280r/gravity/Center/crop/720x1280
* views : 0
* cid : ["4ef0a35c0569795756000000"]
* rule : ?imageMogr2/thumbnail/!$<Width>x$<Height>r/gravity/Center/crop/$<Width>x$<Height>
* ncos : 6
* rank : 51169
* source_type : vertical
* tag : []
* url : []
* wp : http://img5.adesk.com/5e26fed9e7bce75ebd2c449d
* xr : false
* cr : false
* favs : 830
* atime : 1.580187618E9
* id : 5e26fed9e7bce75ebd2c449d
* store : qiniu
* desc :
*/
private String preview;
private String thumb;
private String img;
private int views;
private String rule;
private int ncos;
private int rank;
private String source_type;
private String wp;
private boolean xr;
private boolean cr;
private int favs;
private double atime;
private String id;
private String store;
private String desc;
private List<String> cid;
private List<?> tag;
private List<?> url;
public String getPreview() {
return preview;
}
public void setPreview(String preview) {
this.preview = preview;
}
public String getThumb() {
return thumb;
}
public void setThumb(String thumb) {
this.thumb = thumb;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
public int getViews() {
return views;
}
public void setViews(int views) {
this.views = views;
}
public String getRule() {
return rule;
}
public void setRule(String rule) {
this.rule = rule;
}
public int getNcos() {
return ncos;
}
public void setNcos(int ncos) {
this.ncos = ncos;
}
public int getRank() {
return rank;
}
public void setRank(int rank) {
this.rank = rank;
}
public String getSource_type() {
return source_type;
}
public void setSource_type(String source_type) {
this.source_type = source_type;
}
public String getWp() {
return wp;
}
public void setWp(String wp) {
this.wp = wp;
}
public boolean isXr() {
return xr;
}
public void setXr(boolean xr) {
this.xr = xr;
}
public boolean isCr() {
return cr;
}
public void setCr(boolean cr) {
this.cr = cr;
}
public int getFavs() {
return favs;
}
public void setFavs(int favs) {
this.favs = favs;
}
public double getAtime() {
return atime;
}
public void setAtime(double atime) {
this.atime = atime;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getStore() {
return store;
}
public void setStore(String store) {
this.store = store;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public List<String> getCid() {
return cid;
}
public void setCid(List<String> cid) {
this.cid = cid;
}
public List<?> getTag() {
return tag;
}
public void setTag(List<?> tag) {
this.tag = tag;
}
public List<?> getUrl() {
return url;
}
public void setUrl(List<?> url) {
this.url = url;
}
}
}
}
实体bean有了,下面就是拆分这个请求地址了。找到在mvplibrary下找到ServiceGenerator.java。
新增如下
然后再打开ApiService.java,里面新增一个接口
/**
* 手机壁纸API
*
* @return WallPaperResponse 网络壁纸数据返回
*/
@GET("/v1/vertical/vertical?limit=30&skip=180&adult=false&first=0&order=hot")
Call<WallPaperResponse> getWallPaper();
下面就是订阅器了,在app中的contract包下新建一个WallPaperContract.java,里面的代码如下:
package com.llw.goodweather.contract;
import com.llw.goodweather.api.ApiService;
import com.llw.goodweather.bean.BiYingImgResponse;
import com.llw.goodweather.bean.WallPaperResponse;
import com.llw.mvplibrary.base.BasePresenter;
import com.llw.mvplibrary.base.BaseView;
import com.llw.mvplibrary.bean.AppVersion;
import com.llw.mvplibrary.bean.WallPaper;
import com.llw.mvplibrary.net.NetCallBack;
import com.llw.mvplibrary.net.ServiceGenerator;
import retrofit2.Call;
import retrofit2.Response;
/**
* 壁纸订阅器
*
* @author llw
*/
public class WallPaperContract {
public static class WallPaperPresenter extends BasePresenter<IWallPaperView> {
/**
* 获取必应 每日一图
*/
public void biying() {
ApiService service = ServiceGenerator.createService(ApiService.class, 1);
service.biying().enqueue(new NetCallBack<BiYingImgResponse>() {
@Override
public void onSuccess(Call<BiYingImgResponse> call, Response<BiYingImgResponse> response) {
if (getView() != null) {
getView().getBiYingResult(response);
}
}
@Override
public void onFailed() {
if (getView() != null) {
getView().getDataFailed();
}
}
});
}
/**
* 获取壁纸数据
*/
public void getWallPaper() {
// 6 表示访问网络壁纸接口
ApiService service = ServiceGenerator.createService(ApiService.class, 6);
service.getWallPaper().enqueue(new NetCallBack<WallPaperResponse>() {
@Override
public void onSuccess(Call<WallPaperResponse> call, Response<WallPaperResponse> response) {
if (getView() != null) {
getView().getWallPaperResult(response);
}
}
@Override
public void onFailed() {
if (getView() != null) {
getView().getDataFailed();
}
}
});
}
}
public interface IWallPaperView extends BaseView {
/**
* 获取必应每日一图返回
* @param response BiYingImgResponse
*/
void getBiYingResult(Response<BiYingImgResponse> response);
/**
* 壁纸数据返回
* @param response WallPaperResponse
*/
void getWallPaperResult(Response<WallPaperResponse> response);
/**
* 错误返回
*/
void getDataFailed();
}
}
订阅器也有了,现在回到WallPaperActivity ,继承MvpActivity,传入订阅器,然后实现里面的接口,代码如下:
package com.llw.goodweather.ui;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.recyclerview.widget.RecyclerView;
import com.llw.goodweather.R;
import com.llw.goodweather.contract.WallPaperContract;
import com.llw.mvplibrary.bean.WallPaper;
import com.llw.mvplibrary.mvp.MvpActivity;
import butterknife.BindView;
import butterknife.ButterKnife;
import retrofit2.Response;
/**
* 壁纸管理
*
* @author llw
*/
public class WallPaperActivity extends MvpActivity<WallPaperContract.WallPaperPresenter> implements WallPaperContract.IWallPaperView {
@Override
public void initData(Bundle savedInstanceState) {
}
@Override
public int getLayoutId() {
return R.layout.activity_wall_paper;
}
@Override
protected WallPaperContract.WallPaperPresenter createPresent() {
return new WallPaperContract.WallPaperPresenter();
}
@Override
public void getBiYingResult(Response<BiYingImgResponse> response) {
}
@Override
public void getWallPaperResult(Response<WallPaper> response) {
}
@Override
public void getDataFailed() {
}
}
现在可以先不管这个Activity了,列表既然是显示壁纸,那么就需要一个item的布局,下面在app下的layout下面创建一个item_wallpaper_list.xml,布局代码如下:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:id="@+id/item_wallpaper"
android:layout_height="wrap_content"
android:layout_margin="@dimen/dp_5"
android:orientation="vertical">
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/iv_wallpaper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
app:shapeAppearanceOverlay="@style/roundedCornerStyle" />
</RelativeLayout>
你可能没有用过ShapeableImageView,没关系,首先在mvplibrary中的build.gradle中的dependencies闭包下新增一个依赖库
api 'com.google.android.material:material:1.2.0'//更强
我之前的是1.1.0,那么你可以改成1.2.0。然后同步到你的项目中。你就可以是material专属的UI控件了,你可能会问为什么要用这个控件,普通的ImageView不行吗?因为普通的ImageView没有圆角啊,说道圆角图片我相信你不会陌生,你可能想到自定义ImageView来实现、或者使用第三方库来实现,但是ShapeableImageView里面就自带了圆角的样式给你,惊不惊喜意不意外?好了,废话不多少了,你的布局中应该还有报错的地方才对。因为你少了一个roundedCornerStyle的样式。在mvplibrary下的styles.xml中,新增一个样式就可以了。
<!-- 圆角图片 -->
<style name="roundedCornerStyle">
<item name="cornerFamily">rounded</item>
<item name="cornerSize">@dimen/dp_16</item>
</style>
可能你还注意到我这个item的高度是wrap_content,所以你看不到高度,那么为什么这样做呢?因为我要使用瀑布流,哪种错落感,会给用户不一样的体验,因为不设置高度,是因为需要动态设置ImageView的高度,来实现这个错落感。OK,下面该写这个Adapter了。在app的adapter包下新建一个WallPaperAdapter.java,相信这个代码你能看得懂。
package com.llw.goodweather.adapter;
import android.util.Log;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import androidx.annotation.Nullable;
import com.baidu.panosdk.plugin.indoor.util.ScreenUtils;
import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import com.google.android.material.imageview.ShapeableImageView;
import com.llw.goodweather.R;
import com.llw.goodweather.bean.WallPaperResponse;
import java.util.List;
/**
* 壁纸列表适配器
*
* @author llw
*/
public class WallPaperAdapter extends BaseQuickAdapter<WallPaperResponse.ResBean.VerticalBean, BaseViewHolder> {
//定义一个item的高度列表
List<Integer> mHeightList;
/**
* 头部广告
*/
private String Top = "top";
/**
* 底部广告
*/
private String Bottom = "bottom";
public WallPaperAdapter(int layoutResId, @Nullable List<WallPaperResponse.ResBean.VerticalBean> data, List<Integer> heightList) {
super(layoutResId, data);
this.mHeightList = heightList;
}
@Override
protected void convert(BaseViewHolder helper, WallPaperResponse.ResBean.VerticalBean item) {
ShapeableImageView imageView = helper.getView(R.id.iv_wallpaper);
//获取imageView的LayoutParams
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) imageView.getLayoutParams();
layoutParams.height = dip2px(mHeightList.get(helper.getAdapterPosition()));
//重新设置imageView的高度
imageView.setLayoutParams(layoutParams);
if (Top.equals(item.getDesc()) || Bottom.equals(item.getDesc())) {
imageView.setImageResource(R.mipmap.icon_logo);
} else {
Glide.with(mContext).load(item.getImg()).into(imageView);
}
helper.addOnClickListener(R.id.item_wallpaper);
}
// dp 转成 px
private int dip2px(float dpVale) {
final float scale = mContext.getResources().getDisplayMetrics().density;
return (int) (dpVale * scale + 0.5f);
}
}
适配器也写完了,下面改渲染页面了,对不对。回到WallPaperActivity
/**
* 标题
*/
@BindView(R.id.toolbar)
Toolbar toolbar;
/**
* 数据列表
*/
@BindView(R.id.rv)
RecyclerView rv;
/**
* AppBarLayout布局
*/
@BindView(R.id.appbar)
AppBarLayout appbar;
先绑定页面的控件,然后创建列表和适配器的对象
/**
* 壁纸数据列表
*/
private List<WallPaperResponse.ResBean.VerticalBean> mList = new ArrayList<>();
/**
* 壁纸数据适配器
*/
private WallPaperAdapter mAdapter;
/**
* item高度列表
*/
private List<Integer> heightList = new ArrayList<>();
/**
* 壁纸数量
*/
private static final int WALLPAPER_NUM = 30;
/**
* 头部和底部的item数据
*/
private WallPaperResponse.ResBean.VerticalBean topBean, bottomBean;
/**
* 必应的每日壁纸
*/
private String biyingUrl = null;
新增一个初始化列表数据的方法。
/**
* 初始化列表数据
*/
private void initWallPaperList() {
heightList.add(100);
for (int i = 0; i < WALLPAPER_NUM; i++) {
heightList.add(300);
}
heightList.add(100);
mAdapter = new WallPaperAdapter(R.layout.item_wallpaper_list, mList, heightList);
//瀑布流
StaggeredGridLayoutManager manager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
//设置布局管理
rv.setLayoutManager(manager);
//设置数据适配器
rv.setAdapter(mAdapter);
//请求数据
mPresent.getWallPaper();
//获取必应壁纸
mPresent.biying();
mAdapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
@Override
public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
}
});
}
下面就该来处理返回的数据了。
/**
* 必应壁纸数据返回
*
* @param response BiYingImgResponse
*/
@Override
public void getBiYingResult(Response<BiYingImgResponse> response) {
if (response.body().getImages() != null) {
//得到的图片地址是没有前缀的,所以加上前缀否则显示不出来
biyingUrl = "http://cn.bing.com" + response.body().getImages().get(0).getUrl();
Log.d("type-->", biyingUrl);
} else {
ToastUtils.showShortToast(context, "未获取到必应的图片");
}
}
/**
* 网络壁纸数据返回
*
* @param response WallPaperResponse
*/
@Override
public void getWallPaperResult(Response<WallPaperResponse> response) {
if (response.body().getMsg().equals(Constant.SUCCESS)) {
List<WallPaperResponse.ResBean.VerticalBean> data = response.body().getRes().getVertical();
//创建头部和底部的两个广告item的假数据
topBean = new WallPaperResponse.ResBean.VerticalBean();
topBean.setDesc("top");
topBean.setImg("");
bottomBean = new WallPaperResponse.ResBean.VerticalBean();
bottomBean.setDesc("bottom");
bottomBean.setImg("");
//数据填充
if (data != null && data.size() > 0) {
mList.clear();
//添加头部
mList.add(topBean);
//添加主要数据
for (int i = 0; i < data.size(); i++) {
mList.add(data.get(i));
}
//添加尾部
mList.add(bottomBean);
Log.d("list-->", new Gson().toJson(mList));
//根据数据数量来刷新列表
mAdapter.notifyItemInserted(mList.size());
//删除数据库中的数据
LitePal.deleteAll(WallPaper.class);
for (int i = 0; i < mList.size(); i++) {
WallPaper wallPaper = new WallPaper();
wallPaper.setImgUrl(mList.get(i).getImg());
wallPaper.save();
}
dismissLoadingDialog();
} else {
ToastUtils.showShortToast(context, "壁纸数据为空");
dismissLoadingDialog();
}
} else {
dismissLoadingDialog();
ToastUtils.showShortToast(context, "未获取到壁纸数据");
}
}
@Override
public void getDataFailed() {
dismissLoadingDialog();
ToastUtils.showShortToast(context, "请求超时");
}
Constant中增加一个
/**
* 成功
*/
public static final String SUCCESS = "success";
你会发现网络壁纸的返回处理有些麻烦。不过注释都有了,应该看得懂。下面在mvplibrary中创建WallPaper.java
里面的代码很简单:
package com.llw.mvplibrary.bean;
import org.litepal.crud.LitePalSupport;
import java.util.List;
/**
* 壁纸表
*
* @author llw
*/
public class WallPaper extends LitePalSupport {
private String ImgUrl;
public String getImgUrl() {
return ImgUrl;
}
public void setImgUrl(String imgUrl) {
ImgUrl = imgUrl;
}
}
然后改动assets下面的litepal.xml文件。
然后在WallPaperActivity的initData调用相关的方法。
@Override
public void initData(Bundle savedInstanceState) {
//加载弹窗
showLoadingDialog();
//高亮状态栏
StatusBarUtil.StatusBarLightMode(this);
//左上角的返回
Back(toolbar);
initWallPaperList();
}
下面请求就会有这个数据了,而且你上滑动就会有顶部的标题上隐藏的效果。
2. 浮动按钮的交互
下面加一个浮动按钮。在activity_wall_paper.xml中新增加一个
<!--浮动按钮-->
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab_setting"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="@dimen/dp_20"
android:clickable="true"
android:src="@mipmap/icon_setting"
app:backgroundTint="@color/white"
app:backgroundTintMode="screen"
app:borderWidth="@dimen/dp_0"
app:hoveredFocusedTranslationZ="@dimen/dp_18"
app:pressedTranslationZ="@dimen/dp_18"
app:rippleColor="@color/blue_one" />
icon_setting的图标
然后在WallPaperActivity中新增
/**
* 底部浮动按钮
*/
@BindView(R.id.fab_setting)
FloatingActionButton fabSetting;
然后在initWallPaperList方法中新增如下代码:
//滑动监听
rv.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
if (dy <= 0) {
fabSetting.show();
} else {//上滑
fabSetting.hide();
}
}
});
通过滑动RecyclerView对浮动按钮进行控制。当然浮动按钮要是光是显示和隐藏自然远远不行,浮动按钮点击之后要怎么样呢?
要出现一个底部弹窗,供你选择哪种方式的壁纸。
下面在app的layout下新建一个dialog_bottom_wallpaper_setting.xml,布局代码如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
android:orientation="vertical">
<!--壁纸列表-->
<LinearLayout
android:id="@+id/lay_wallpaper_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:foreground="?android:attr/selectableItemBackground"
android:gravity="center"
android:orientation="horizontal"
android:padding="@dimen/dp_16">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="壁纸列表"
android:textColor="@color/black_4"
android:textSize="@dimen/sp_14" />
<ImageView
android:id="@+id/iv_wallpaper_list"
android:layout_width="@dimen/dp_24"
android:layout_height="@dimen/dp_24"
android:src="@mipmap/icon_selected"
android:visibility="invisible" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginLeft="@dimen/dp_16"
android:layout_marginRight="@dimen/dp_16"
android:background="@color/gray_white_2" />
<!--每日一图-->
<LinearLayout
android:id="@+id/lay_everyday_wallpaper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:foreground="?android:attr/selectableItemBackground"
android:gravity="center"
android:orientation="horizontal"
android:padding="@dimen/dp_16">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="每日一图"
android:textColor="@color/black_4"
android:textSize="@dimen/sp_14" />
<ImageView
android:id="@+id/iv_everyday_wallpaper"
android:layout_width="@dimen/dp_24"
android:layout_height="@dimen/dp_24"
android:src="@mipmap/icon_selected"
android:visibility="invisible" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginLeft="@dimen/dp_16"
android:layout_marginRight="@dimen/dp_16"
android:background="@color/gray_white_2" />
<!--手动上传-->
<LinearLayout
android:id="@+id/lay_upload_wallpaper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:foreground="?android:attr/selectableItemBackground"
android:gravity="center"
android:orientation="horizontal"
android:padding="@dimen/dp_16">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="手动上传"
android:textColor="@color/black_4"
android:textSize="@dimen/sp_14" />
<ImageView
android:id="@+id/iv_upload_wallpaper"
android:layout_width="@dimen/dp_24"
android:layout_height="@dimen/dp_24"
android:src="@mipmap/icon_selected"
android:visibility="invisible" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginLeft="@dimen/dp_16"
android:layout_marginRight="@dimen/dp_16"
android:background="@color/gray_white_2" />
<!--默认壁纸-->
<LinearLayout
android:id="@+id/lay_default_wallpaper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:foreground="?android:attr/selectableItemBackground"
android:gravity="center"
android:orientation="horizontal"
android:padding="@dimen/dp_16">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="默认壁纸"
android:textColor="@color/black_4"
android:textSize="@dimen/sp_14" />
<ImageView
android:id="@+id/iv_default_wallpaper"
android:layout_width="@dimen/dp_24"
android:layout_height="@dimen/dp_24"
android:src="@mipmap/icon_selected"
android:visibility="invisible" />
</LinearLayout>
</LinearLayout>
预览如下:
icon_selected图标:
下面来写这个弹窗。
回到WallPaperActivity。
初始化这个弹窗,注意这个导包是我自定义的,不是系统自带的。
import com.llw.mvplibrary.view.dialog.AlertDialog;
/**
* 底部弹窗
*/
AlertDialog bottomSettingDialog = null;
然后写一个方法用来显示弹窗以及里面的一些业务逻辑的处理。
/**
* 壁纸底部弹窗弹窗
*/
private void showSettingDialog(int type) {
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.addDefaultAnimation()//默认弹窗动画
.setCancelable(true)
.fromBottom(true)
//载入布局文件
.setContentView(R.layout.dialog_bottom_wallpaper_setting)
//设置弹窗宽高
.setWidthAndHeight(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
//壁纸列表
.setOnClickListener(R.id.lay_wallpaper_list, v -> {
Intent intent = new Intent(context, ImageActivity.class);
intent.putExtra("position", 0);
startActivity(intent);
bottomSettingDialog.dismiss();
//每日一图
}).setOnClickListener(R.id.lay_everyday_wallpaper, v -> {
ToastUtils.showShortToast(context, "使用每日一图");
SPUtils.putString(Constant.WALLPAPER_URL, biyingUrl, context);
//壁纸列表
SPUtils.putInt(Constant.WALLPAPER_TYPE, 2, context);
bottomSettingDialog.dismiss();
//手动上传
}).setOnClickListener(R.id.lay_upload_wallpaper, v -> {
startActivityForResult(CameraUtils.getSelectPhotoIntent(), SELECT_PHOTO);
ToastUtils.showShortToast(context, "请选择图片");
bottomSettingDialog.dismiss();
//默认壁纸
}).setOnClickListener(R.id.lay_default_wallpaper, v -> {
ToastUtils.showShortToast(context, "使用默认壁纸");
SPUtils.putInt(Constant.WALLPAPER_TYPE, 4, context);//使用默认壁纸
SPUtils.putString(Constant.WALLPAPER_URL, null, context);
bottomSettingDialog.dismiss();
});
bottomSettingDialog = builder.create();
ImageView iv_wallpaper_list = (ImageView) bottomSettingDialog.getView(R.id.iv_wallpaper_list);
ImageView iv_everyday_wallpaper = (ImageView) bottomSettingDialog.getView(R.id.iv_everyday_wallpaper);
ImageView iv_upload_wallpaper = (ImageView) bottomSettingDialog.getView(R.id.iv_upload_wallpaper);
ImageView iv_default_wallpaper = (ImageView) bottomSettingDialog.getView(R.id.iv_default_wallpaper);
switch (type) {
//壁纸列表
case 1:
iv_wallpaper_list.setVisibility(View.VISIBLE);
break;
//每日一图
case 2:
iv_everyday_wallpaper.setVisibility(View.VISIBLE);
break;
//手动上传
case 3:
iv_upload_wallpaper.setVisibility(View.VISIBLE);
break;
//默认壁纸
case 4:
iv_default_wallpaper.setVisibility(View.VISIBLE);
break;
default:
iv_default_wallpaper.setVisibility(View.GONE);
break;
}
bottomSettingDialog.show();
//弹窗关闭监听
bottomSettingDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
fabSetting.show();
}
});
}
可以看到通过一个type来控制当前的壁纸属于那种模式,然后在弹窗关闭的时候显示浮动按钮,我在Constant中定义了两个变量,一个用于保存壁纸的状态,一个用于保存壁纸的地址值。
/**
* 壁纸地址
*/
public static final String WALLPAPER_URL = "wallpaperUrl";
/**
* 壁纸类型 1 壁纸列表 2 每日一图 3 手动上传 4 默认壁纸
*/
public static final String WALLPAPER_TYPE = "wallpaperType";
里面用到过一个工具类CameraUtils,代码如下:
package com.llw.goodweather.utils;
import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.ImageView;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
/**
* 相机、相册工具类
*
* @author llw
*/
public class CameraUtils {
public static Intent getTakePhotoIntent(Context context, File outputImagepath) {
//获取系統版本
int currentapiVersion = Build.VERSION.SDK_INT;
// 激活相机
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// 判断存储卡是否可以用,可用进行存储
if (hasSdcard()) {
if (currentapiVersion < 24) {
// 从文件中创建uri
Uri uri = Uri.fromFile(outputImagepath);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
} else {
//兼容android7.0 使用共享文件的形式
ContentValues contentValues = new ContentValues(1);
contentValues.put(MediaStore.Images.Media.DATA, outputImagepath.getAbsolutePath());
Uri uri = context.getApplicationContext().getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
}
}
return intent;
}
public static Intent getSelectPhotoIntent() {
Intent intent = new Intent("android.intent.action.GET_CONTENT");
intent.setType("image/*");
return intent;
}
/*
* 判断sdcard是否被挂载
*/
public static boolean hasSdcard() {
return Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED);
}
/**
* 4.4及以上系统处理图片的方法
*/
@TargetApi(Build.VERSION_CODES.KITKAT)
public static String getImgeOnKitKatPath(Intent data, Context context) {
String imagePath = null;
Uri uri = data.getData();
Log.d("uri=intent.getData :", "" + uri);
if (DocumentsContract.isDocumentUri(context, uri)) {
String docId = DocumentsContract.getDocumentId(uri); //数据表里指定的行
Log.d("getDocumentId(uri) :", "" + docId);
Log.d("uri.getAuthority() :", "" + uri.getAuthority());
if ("com.android.providers.media.documents".equals(uri.getAuthority())) {
String id = docId.split(":")[1];
String selection = MediaStore.Images.Media._ID + "=" + id;
imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection, context);
} else if ("com.android.providers.downloads.documents".equals(uri.getAuthority())) {
Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
imagePath = getImagePath(contentUri, null, context);
}
} else if ("content".equalsIgnoreCase(uri.getScheme())) {
imagePath = getImagePath(uri, null, context);
}
return imagePath;
}
/**
* 通过uri和selection来获取真实的图片路径,从相册获取图片时要用
*/
public static String getImagePath(Uri uri, String selection, Context context) {
String path = null;
Cursor cursor = context.getContentResolver().query(uri, null, selection, null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
}
cursor.close();
}
return path;
}
//改变拍完照后图片方向不正的问题
public static void ImgUpdateDirection(String filepath, Bitmap orc_bitmap, ImageView iv) {
int digree = 0;//图片旋转的角度
//根据图片的URI获取图片的绝对路径
Log.i("tag", ">>>>>>>>>>>>>开始");
//String filepath = ImgUriDoString.getRealFilePath(getApplicationContext(), uri);
Log.i("tag", "》》》》》》》》》》》》》》》" + filepath);
//根据图片的filepath获取到一个ExifInterface的对象
ExifInterface exif = null;
try {
exif = new ExifInterface(filepath);
Log.i("tag", "exif》》》》》》》》》》》》》》》" + exif);
if (exif != null) {
// 读取图片中相机方向信息
int ori = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
// 计算旋转角度
switch (ori) {
case ExifInterface.ORIENTATION_ROTATE_90:
digree = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
digree = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
digree = 270;
break;
default:
digree = 0;
break;
}
}
//如果图片不为0
if (digree != 0) {
// 旋转图片
Matrix m = new Matrix();
m.postRotate(digree);
orc_bitmap = Bitmap.createBitmap(orc_bitmap, 0, 0, orc_bitmap.getWidth(),
orc_bitmap.getHeight(), m, true);
}
if (orc_bitmap != null) {
iv.setImageBitmap(orc_bitmap);
}
} catch (IOException e) {
e.printStackTrace();
exif = null;
}
}
/**
* 4.4以下系统处理图片的方法
*/
public static String getImageBeforeKitKatPath(Intent data, Context context) {
Uri uri = data.getData();
String imagePath = getImagePath(uri, null, context);
return imagePath;
}
//比例压缩
public static Bitmap comp(Bitmap image) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 100, baos);
if (baos.toByteArray().length / 1024 > 5120) {//判断如果图片大于5M,进行压缩避免在生成图片(BitmapFactory.decodeStream)时溢出
baos.reset();//重置baos即清空baos
image.compress(Bitmap.CompressFormat.JPEG, 50, baos);//这里压缩50%,把压缩后的数据存放到baos中
}
ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
BitmapFactory.Options newOpts = new BitmapFactory.Options();
//开始读入图片,此时把options.inJustDecodeBounds 设回true了
newOpts.inJustDecodeBounds = true;
Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
newOpts.inJustDecodeBounds = false;
int w = newOpts.outWidth;
int h = newOpts.outHeight;
//现在主流手机比较多是800*480分辨率,所以高和宽我们设置为
float hh = 800f;//这里设置高度为800f
float ww = 480f;//这里设置宽度为480f
//缩放比。由于是固定比例缩放,只用高或者宽其中一个数据进行计算即可
int be = 1;//be=1表示不缩放
if (w > h && w > ww) {//如果宽度大的话根据宽度固定大小缩放
be = (int) (newOpts.outWidth / ww);
} else if (w < h && h > hh) {//如果高度高的话根据宽度固定大小缩放
be = (int) (newOpts.outHeight / hh);
}
if (be <= 0)
be = 1;
newOpts.inSampleSize = be;//设置缩放比例
newOpts.inPreferredConfig = Bitmap.Config.RGB_565;//降低图片从ARGB888到RGB565
//重新读入图片,注意此时已经把options.inJustDecodeBounds 设回false了
isBm = new ByteArrayInputStream(baos.toByteArray());
bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
return bitmap;//压缩好比例大小后再进行质量压缩
}
}
因为第三个是手动上传,所以会打开你的本地相册,当你选择一个图片之后,需要拿到返回的数据。所以要重写onActivityResult,在这个方法里面获取到图片的路径,然后放到缓存里,这时候你的壁纸类型就是手动上传的壁纸了。
/**
* Activity返回结果
*
* @param requestCode
* @param resultCode
* @param data
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
//打开相册后返回
case SELECT_PHOTO:
if (resultCode == RESULT_OK) {
String imagePath = null;
//判断手机系统版本号
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {
//4.4及以上系统使用这个方法处理图片
imagePath = CameraUtils.getImgeOnKitKatPath(data, this);
} else {
imagePath = CameraUtils.getImageBeforeKitKatPath(data, this);
}
displayImage(imagePath);
}
Log.d("result-->", requestCode + " " + resultCode + " " + data.getData().toString());
break;
default:
Log.d("result-->", requestCode + " " + resultCode + " " + data.getData().toString());
break;
}
}
/**
* 从相册获取完图片(根据图片路径显示图片)
*/
private void displayImage(String imagePath) {
if (!TextUtils.isEmpty(imagePath)) {
//将本地上传选中的图片地址放入缓存,当手动定义开关打开时,取出缓存中的图片地址,显示为背景
SPUtils.putInt(Constant.WALLPAPER_TYPE, 3, context);
SPUtils.putString(Constant.WALLPAPER_URL, imagePath, context);
ToastUtils.showShortToast(context, "已更换为你选择的图片");
} else {
SPUtils.putInt(Constant.WALLPAPER_TYPE, 0, context);
ToastUtils.showShortToast(context, "图片获取失败");
}
}
至于默认壁纸,只要壁纸类型改为4,然后清空缓存中壁纸地址就可以了。因为这个地址是MainActivity中用来显示背景的依据,没有了就会显示默认背景。
至于第二个每日一图,就是在点击的时候把通过结果返回的地址拼接之后,再放入缓存中。同样指定类型。当然最头痛的是这个壁纸列表,首先在当前页面我们已经可以看到这个壁纸列表数据了。那么我们可以通过点击item的时候跳转到查看该壁纸完整的页面。所以需要创建一个ImageActivity,在app的UI包下创建。
布局的代码如下:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
tools:context=".ui.ImageActivity">
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/vp"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<!--返回按钮-->
<ImageView
android:id="@+id/iv_back"
android:layout_width="@dimen/dp_50"
android:layout_height="@dimen/dp_50"
android:layout_marginLeft="@dimen/dp_12"
android:layout_marginTop="@dimen/dp_30"
android:padding="@dimen/dp_8"
android:background="@drawable/selector_bg_img"
android:src="@mipmap/icon_image_return_white" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="@dimen/dp_12"
android:gravity="center"
android:orientation="horizontal">
<!--设为壁纸-->
<com.google.android.material.button.MaterialButton
android:id="@+id/btn_setting_wallpaper"
style="@style/Widget.MaterialComponents.Button.UnelevatedButton"
android:layout_width="@dimen/dp_100"
android:layout_height="@dimen/dp_32"
android:layout_marginRight="@dimen/dp_6"
android:insetTop="@dimen/dp_0"
android:insetBottom="@dimen/dp_0"
android:text="设为壁纸"
android:theme="@style/Theme.MaterialComponents.Light.NoActionBar"
app:backgroundTint="@color/white_2"
app:cornerRadius="@dimen/dp_16"
app:strokeColor="@color/white"
app:strokeWidth="@dimen/dp_1" />
<!--下载壁纸-->
<com.google.android.material.button.MaterialButton
android:id="@+id/btn_download"
style="@style/Widget.MaterialComponents.Button.UnelevatedButton"
android:layout_width="@dimen/dp_100"
android:layout_height="@dimen/dp_32"
android:layout_marginLeft="@dimen/dp_6"
android:insetTop="@dimen/dp_0"
android:insetBottom="@dimen/dp_0"
android:text="下载壁纸"
android:theme="@style/Theme.MaterialComponents.Light.NoActionBar"
app:backgroundTint="@color/about_bg_color"
app:cornerRadius="@dimen/dp_16" />
</LinearLayout>
</RelativeLayout>
因为布局用的是ViewPager2。它可以直接传RecyclerView.Adapter进去,让我们希望的是,进入之后可以左右滑动查看壁纸,所以用到这个,那么怎么实现呢?首先需要展示的item布局。在app下的layout中创建一个item_image_list.xml文件,里面的布局代码如下:
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.imageview.ShapeableImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/wallpaper"
android:scaleType="centerCrop"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
然后在ImageActivity中,需要继承BaseActivity。里面的完整代码如下:
package com.llw.goodweather.ui;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import androidx.annotation.Nullable;
import androidx.viewpager2.widget.ViewPager2;
import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import com.google.android.material.button.MaterialButton;
import com.google.gson.Gson;
import com.llw.goodweather.R;
import com.llw.goodweather.utils.Constant;
import com.llw.goodweather.utils.SPUtils;
import com.llw.goodweather.utils.StatusBarUtil;
import com.llw.goodweather.utils.ToastUtils;
import com.llw.mvplibrary.base.BaseActivity;
import com.llw.mvplibrary.bean.WallPaper;
import org.litepal.LitePal;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import butterknife.BindView;
import butterknife.OnClick;
/**
* 查看图片
*
* @author llw
*/
public class ImageActivity extends BaseActivity {
@BindView(R.id.iv_back)
ImageView ivBack;
@BindView(R.id.btn_setting_wallpaper)
MaterialButton btnSettingWallpaper;
@BindView(R.id.btn_download)
MaterialButton btnDownload;
@BindView(R.id.vp)
ViewPager2 vp;
List<WallPaper> mList = new ArrayList<>();
WallPaperAdapter mAdapter;
String wallpaperUrl = null;
private int position;
private Bitmap bitmap;
@Override
public void initData(Bundle savedInstanceState) {
showLoadingDialog();
//透明状态栏
StatusBarUtil.transparencyBar(context);
//获取位置
position = getIntent().getIntExtra("position", 0);
//获取数据
mList = LitePal.findAll(WallPaper.class);
Log.d("list-->", "" + mList.size());
if (mList != null && mList.size() > 0) {
for (int i = 0; i < mList.size(); i++) {
if (mList.get(i).getImgUrl().equals("")) {
mList.remove(i);
}
}
}
Log.d("list-->", "" + mList.size());
//RecyclerView实现方式
mAdapter = new WallPaperAdapter(R.layout.item_image_list, mList);
Log.d("wallPaper", new Gson().toJson(mList));
//ViewPager2实现方式
vp.setAdapter(mAdapter);
vp.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
@Override
public void onPageSelected(int position) {
Log.d("position-->", "" + position);
wallpaperUrl = mList.get(position).getImgUrl();
bitmap = getBitMap(wallpaperUrl);
}
});
mAdapter.notifyDataSetChanged();
vp.setCurrentItem(position, false);
dismissLoadingDialog();
}
@Override
public int getLayoutId() {
return R.layout.activity_image;
}
@OnClick({R.id.iv_back, R.id.btn_setting_wallpaper, R.id.btn_download})
public void onViewClicked(View view) {
switch (view.getId()) {
case R.id.iv_back:
finish();
break;
//设置壁纸
case R.id.btn_setting_wallpaper:
//放入缓存
SPUtils.putString(Constant.WALLPAPER_URL, wallpaperUrl, context);
//壁纸列表
SPUtils.putInt(Constant.WALLPAPER_TYPE, 1, context);
ToastUtils.showShortToast(context, "已设置");
break;
//下载壁纸
case R.id.btn_download:
saveImageToGallery(context, bitmap);
break;
default:
break;
}
}
/**
* 壁纸适配器
*/
public class WallPaperAdapter extends BaseQuickAdapter<WallPaper, BaseViewHolder> {
public WallPaperAdapter(int layoutResId, @Nullable List<WallPaper> data) {
super(layoutResId, data);
}
@Override
protected void convert(BaseViewHolder helper, WallPaper item) {
ImageView imageView = helper.getView(R.id.wallpaper);
Glide.with(mContext).load(item.getImgUrl()).into(imageView);
}
}
/**
* 保存图片到本地相册
*
* @param context 上下文
* @param bitmap bitmap
* @return
*/
public boolean saveImageToGallery(Context context, Bitmap bitmap) {
// 首先保存图片
String filePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "good_weather";
File appDir = new File(filePath);
if (!appDir.exists()) {
appDir.mkdir();
}
String fileName = "wallpaper" + 1024 + ".jpg";
File file = new File(appDir, fileName);
try {
FileOutputStream fos = new FileOutputStream(file);
//通过io流的方式来压缩保存图片
boolean isSuccess = bitmap.compress(Bitmap.CompressFormat.JPEG, 60, fos);
fos.flush();
fos.close();
//把文件插入到系统图库
MediaStore.Images.Media.insertImage(context.getContentResolver(), file.getAbsolutePath(), fileName, null);
//保存图片后发送广播通知更新数据库
Uri uri = Uri.fromFile(file);
context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri));
if (isSuccess) {
ToastUtils.showShortToast(context, "图片保存成功");
return true;
} else {
ToastUtils.showShortToast(context, "图片保存失败");
return false;
}
} catch (IOException e) {
e.printStackTrace();
}
ToastUtils.showShortToast(context, "图片保存失败");
return false;
}
/**
* Url转Bitmap
*
* @param url
* @return
*/
public Bitmap getBitMap(final String url) {
//新启一个线程进行转换
new Thread(new Runnable() {
@Override
public void run() {
URL imageurl = null;
try {
imageurl = new URL(url);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
HttpURLConnection conn = (HttpURLConnection) imageurl.openConnection();
conn.setDoInput(true);
conn.connect();
InputStream inputStream = conn.getInputStream();
bitmap = BitmapFactory.decodeStream(inputStream);
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
return bitmap;
}
}
下面讲一下这个页面的业务逻辑。从WallPaperActivity中点击item活着是点击底部弹窗的时候传递点击的position过来。然后查询数据库中的壁纸表,移除掉ImgUrl为 “”的数据,因为这个数据是我手动加上去的,然后就是设置适配器给ViewPager2,滑动的时候获取选中页的图片地址,并将地址转成bitmap,然后当你点击底部的下载壁纸的时候,通过保存当前的bitmap到手机本地,页面的逻辑就讲完了。下面回到WallPaperActivity,在里面添加item的点击后的业务处理。
还差一步,那就是浮动按钮的点击事件没有写。
@OnClick(R.id.fab_setting)
public void onViewClicked() {
fabSetting.hide();
int type = SPUtils.getInt(Constant.WALLPAPER_TYPE, 4, context);
showSettingDialog(type);
}
那么到这里页面的代码就差不多写完了。累死我了,写完代码写博客,说真的写博客比写代码更累。下面就是回到MainActivity中去做壁纸的显示处理。在onResume方法中
方法代码如下:
/**
* 更换壁纸
*/
private void updateWallpaper() {
String imgUrl = SPUtils.getString(Constant.WALLPAPER_URL, null, context);
if (imgUrl != null) {
Glide.with(context).load(imgUrl).into(bg);
} else {
Glide.with(context).load(R.drawable.img_5).into(bg);
}
}
OK,代码就写完了。
3. 其他优化
我记得我之前说过有空就要优化那个搜索城市页面的弹窗,之前用的原生的比较的丑。所以现在自己创建了一个布局,在app中的layout下创建一个dialog_tip.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:background="@drawable/shape_white_5"
android:layout_width="@dimen/dp_270"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tv_title"
android:text="提示"
android:padding="@dimen/dp_8"
android:gravity="center"
android:textSize="@dimen/sp_16"
android:textColor="@color/black_4"
android:layout_width="match_parent"
android:layout_height="@dimen/dp_48"/>
<TextView
android:id="@+id/tv_content"
android:text="内容"
android:padding="@dimen/dp_20"
android:gravity="center"
android:textSize="@dimen/sp_14"
android:textColor="@color/black_4"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<View
android:background="@color/gray"
android:layout_width="match_parent"
android:layout_height="0.3dp"/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tv_cancel"
android:text="取消"
android:gravity="center"
android:padding="@dimen/dp_12"
android:textSize="@dimen/sp_14"
android:foreground="@drawable/bg_white"
android:textColor="@color/black_4"
android:layout_weight="1"
android:layout_width="@dimen/dp_0"
android:layout_height="wrap_content"/>
<View
android:background="@color/gray"
android:layout_width="0.3dp"
android:layout_height="match_parent"/>
<TextView
android:id="@+id/tv_sure"
android:text="确定"
android:gravity="center"
android:foreground="@drawable/bg_white"
android:padding="@dimen/dp_12"
android:textSize="@dimen/sp_14"
android:textColor="@color/black_4"
android:layout_weight="1"
android:layout_width="@dimen/dp_0"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>
进入SearchCityActivity
/**
* 提示弹窗
*/
private AlertDialog tipDialog = null;
/**
* 显示提示弹窗
* @param data 数据
* @param content 内容
*/
private void showTipDialog(Object data, String content) {
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.addDefaultAnimation()
.setCancelable(true)
.setContentView(R.layout.dialog_tip)
.setWidthAndHeight(SizeUtils.dp2px(context, 270), LinearLayout.LayoutParams.WRAP_CONTENT)
.setText(R.id.tv_content, content)
.setOnClickListener(R.id.tv_cancel, v -> {
tipDialog.dismiss();
}).setOnClickListener(R.id.tv_sure, v -> {
//传入all则删除所有
if (ALL_RECORD.equals(data)) {
flSearchRecords.setLimit(true);
//清除所有数据
mRecordsDao.deleteUsernameAllRecords();
llHistoryContent.setVisibility(View.GONE);
} else {
//删除某一条记录 传入单个的position
mRecordsDao.deleteRecord(recordList.get((Integer) data));
initTagFlowLayout();
}
tipDialog.dismiss();
});
tipDialog = builder.create();
tipDialog.show();
}
调用的地方。长按删除单条数据
点击删除全部数据
运行效果图如下所示:
搞定了。后面还会更新的,未完待续。
源码如下:
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联系邮箱 lonelyholiday@qq.com
本文地址:https://blog.csdn.net/qq_38436214/article/details/108469321
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