Android中使用GridView实现仿微信图片上传功能(附源代码)

由于工作要求最近在使用gridview完成图片的批量上传功能，我的例子当中包含仿微信图片上传、拍照、本地选择、相片裁剪等功能，如果有需要的朋友可以看一下，希望我的实际经验能对您有所帮助。

直接上图，下面的图片就是点击“加号”后弹出的对话框，通过对话框可以根据自己需求进行相片选择。

            

项目结构：

下面直接上代码。

整体的布局文件activity_main.xml

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@drawable/index"
  android:orientation="vertical" >
  <linearlayout
    android:layout_width="match_parent"
    android:layout_height="44dp"
    android:background="#24cf5f"
    android:orientation="horizontal" >
    <imageview
      android:id="@+id/back"
      android:layout_width="match_parent"
      android:layout_height="20dp"
      android:layout_gravity="center"
      android:layout_weight="5"
      android:src="@drawable/back" />
    <textview
      android:layout_width="fill_parent"
      android:layout_height="44dp"
      android:layout_weight="1"
      android:gravity="center"
      android:paddingright="40dp"
      android:text="图片上传"
      android:textcolor="#ffffff"
      android:textsize="30px" />
  </linearlayout>
  <linearlayout
    android:layout_width="match_parent"
    android:layout_height="1dp"
    android:background="#000000" />
  <scrollview
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1" >
    <linearlayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical" >
      <linearlayout
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />
      <linearlayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_weight="1"
        android:orientation="vertical" >
        <textview
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:layout_weight="1"
          android:gravity="center"
          android:text="请选择上传的图片" />
        <textview
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:layout_weight="1"
          android:gravity="center"
          android:text="（友情提示:图片最多可添加9张,点击可删除选择的图片）"
          android:textsize="18px" />
      </linearlayout>
      <linearlayout
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />
      <linearlayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" >
        <com.yihang.mygridview.mygridview
          android:id="@+id/gridview"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_margin="5dp"
          android:layout_weight="111"
          android:columnwidth="90dp"
          android:gravity="center"
          android:horizontalspacing="5dp"
          android:numcolumns="4"
          android:stretchmode="columnwidth"
          android:verticalspacing="5dp" />
      </linearlayout>
    </linearlayout>
  </scrollview>
  <button
    android:id="@+id/bt_submit"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="bottom"
    android:layout_weight="5.2"
    android:background="#24cf5f"
    android:text="上传"
    android:textcolor="#ffffff"
    android:textsize="16sp" />
</linearlayout>

activity：mainactivity

package com.yihang.activity;
import java.io.bytearrayoutputstream;
import java.io.file;
import java.util.arraylist;
import java.util.hashmap;
import android.app.activity;
import android.app.alertdialog;
import android.app.alertdialog.builder;
import android.content.dialoginterface;
import android.content.intent;
import android.content.pm.activityinfo;
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.text.textutils;
import android.view.layoutinflater;
import android.view.view;
import android.view.window;
import android.view.windowmanager;
import android.widget.adapterview;
import android.widget.adapterview.onitemclicklistener;
import android.widget.gridview;
import android.widget.imageview;
import android.widget.simpleadapter;
import android.widget.simpleadapter.viewbinder;
import android.widget.toast;
import com.yihang.dialog.mydialog;
import com.yihang.dialog.mydialog.onbuttonclicklistener;
import com.yihang.photodemo.r;
public class mainactivity extends activity implements
onbuttonclicklistener, onitemclicklistener{
  private mydialog dialog;// 图片选择对话框
  public static final int none = 0;
  public static final int photohraph = 1;// 拍照
  public static final int photozoom = 2; // 缩放
  public static final int photoresoult = 3;// 结果
  public static final string image_unspecified = "image/*";
  private gridview gridview; // 网格显示缩略图
  private final int image_open = 4; // 打开图片标记
  private string pathimage; // 选择图片路径
  private bitmap bmp; // 导入临时图片
  private arraylist<hashmap<string, object>> imageitem;
  private simpleadapter simpleadapter; // 适配器
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    requestwindowfeature(window.feature_no_title);
    /*
     * 防止键盘挡住输入框 不希望遮挡设置activity属性 android:windowsoftinputmode="adjustpan"
     * 希望动态调整高度 android:windowsoftinputmode="adjustresize"
     */
    getwindow().setsoftinputmode(
        windowmanager.layoutparams.soft_input_adjust_pan);
    // 锁定屏幕
    setrequestedorientation(activityinfo.screen_orientation_portrait);
    setcontentview(r.layout.activity_main);
    init();
    initdata();
  }
  private void init() {
    gridview = (gridview) findviewbyid(r.id.gridview);
    gridview.setonitemclicklistener(this);
    dialog = new mydialog(this);
    dialog.setonbuttonclicklistener(this);
    // activity中调用其他activity中组件的方法
    layoutinflater layout = this.getlayoutinflater();
    view view = layout.inflate(r.layout.layout_select_photo, null);
  }
  private void initdata() {
    /*
     * 载入默认图片添加图片加号
     */
    bmp = bitmapfactory.decoderesource(getresources(),
        r.drawable.gridview_addpic); // 加号
    imageitem = new arraylist<hashmap<string, object>>();
    hashmap<string, object> map = new hashmap<string, object>();
    map.put("itemimage", bmp);
    imageitem.add(map);
    simpleadapter = new simpleadapter(this, imageitem,
        r.layout.griditem_addpic, new string[] { "itemimage" },
        new int[] { r.id.imageview1 });
    simpleadapter.setviewbinder(new viewbinder() {
      @override
      public boolean setviewvalue(view view, object data,
          string textrepresentation) {
        // todo auto-generated method stub
        if (view instanceof imageview && data instanceof bitmap) {
          imageview i = (imageview) view;
          i.setimagebitmap((bitmap) data);
          return true;
        }
        return false;
      }
    });
    gridview.setadapter(simpleadapter);
  }
  @override
  public void camera() {
    // todo auto-generated method stub
    intent intent = new intent(mediastore.action_image_capture);
    intent.putextra(mediastore.extra_output, uri.fromfile(new file(
        environment.getexternalstoragedirectory(), "temp.jpg")));
    startactivityforresult(intent, photohraph);
  }
  @override
  public void gallery() {
    // todo auto-generated method stub
    intent intent = new intent(intent.action_pick,
        android.provider.mediastore.images.media.external_content_uri);
    startactivityforresult(intent, image_open);
  }
  @override
  public void cancel() {
    // todo auto-generated method stub
    dialog.cancel();
  }
  @override
  protected void onactivityresult(int requestcode, int resultcode, intent data) {
    // todo auto-generated method stub
    super.onactivityresult(requestcode, resultcode, data);
    if (resultcode == none)
      return;
    // 拍照
    if (requestcode == photohraph) {
      // 设置文件保存路径这里放在跟目录下
      file picture = new file(environment.getexternalstoragedirectory()
          + "/temp.jpg");
      startphotozoom(uri.fromfile(picture));
    }
    if (data == null)
      return;
    // 处理结果
    if (requestcode == photoresoult) {
      bundle extras = data.getextras();
      if (extras != null) {
        bitmap photo = extras.getparcelable("data");
        bytearrayoutputstream stream = new bytearrayoutputstream();
        photo.compress(bitmap.compressformat.jpeg, 75, stream);// (0-100)压缩文件
        // 将图片放入gridview中
        hashmap<string, object> map = new hashmap<string, object>();
        map.put("itemimage", photo);
        imageitem.add(map);
        simpleadapter = new simpleadapter(this, imageitem,
            r.layout.griditem_addpic, new string[] { "itemimage" },
            new int[] { r.id.imageview1 });
        simpleadapter.setviewbinder(new viewbinder() {
          @override
          public boolean setviewvalue(view view, object data,
              string textrepresentation) {
            // todo auto-generated method stub
            if (view instanceof imageview && data instanceof bitmap) {
              imageview i = (imageview) view;
              i.setimagebitmap((bitmap) data);
              return true;
            }
            return false;
          }
        });
        gridview.setadapter(simpleadapter);
        simpleadapter.notifydatasetchanged();
        dialog.dismiss();
      }
    }
    // 打开图片
    if (resultcode == result_ok && requestcode == image_open) {
      startphotozoom(data.getdata());
    }
    super.onactivityresult(requestcode, resultcode, data);
  }
  @override
  protected void onresume() {
    // todo auto-generated method stub
    super.onresume();
    if (!textutils.isempty(pathimage)) {
      bitmap addbmp = bitmapfactory.decodefile(pathimage);
      hashmap<string, object> map = new hashmap<string, object>();
      map.put("itemimage", addbmp);
      imageitem.add(map);
      simpleadapter = new simpleadapter(this, imageitem,
          r.layout.griditem_addpic, new string[] { "itemimage" },
          new int[] { r.id.imageview1 });
      simpleadapter.setviewbinder(new viewbinder() {
        @override
        public boolean setviewvalue(view view, object data,
            string textrepresentation) {
          // todo auto-generated method stub
          if (view instanceof imageview && data instanceof bitmap) {
            imageview i = (imageview) view;
            i.setimagebitmap((bitmap) data);
            return true;
          }
          return false;
        }
      });
      gridview.setadapter(simpleadapter);
      simpleadapter.notifydatasetchanged();
      // 刷新后释放防止手机休眠后自动添加
      pathimage = null;
      dialog.dismiss();
    }
  }
  @override
  public void onitemclick(adapterview<?> parent, view v, int position, long id) {
    // todo auto-generated method stub
    if (imageitem.size() == 10) { // 第一张为默认图片
      toast.maketext(mainactivity.this, "图片数9张已满",
          toast.length_short).show();
    } else if (position == 0) { // 点击图片位置为+ 0对应0张图片
      // 选择图片
      dialog.show();
      // 通过onresume()刷新数据
    } else {
      dialog(position);
    }
  }
  /*
   * dialog对话框提示用户删除操作 position为删除图片位置
   */
  protected void dialog(final int position) {
    alertdialog.builder builder = new builder(mainactivity.this);
    builder.setmessage("确认移除已添加图片吗？");
    builder.settitle("提示");
    builder.setpositivebutton("确认", new dialoginterface.onclicklistener() {
      @override
      public void onclick(dialoginterface dialog, int which) {
        dialog.dismiss();
        imageitem.remove(position);
        simpleadapter.notifydatasetchanged();
      }
    });
    builder.setnegativebutton("取消", new dialoginterface.onclicklistener() {
      @override
      public void onclick(dialoginterface dialog, int which) {
        dialog.dismiss();
      }
    });
    builder.create().show();
  }
  public void startphotozoom(uri uri) {
    intent intent = new intent("com.android.camera.action.crop");
    intent.setdataandtype(uri, image_unspecified);
    intent.putextra("crop", "true");
    // aspectx aspecty 是宽高的比例
    intent.putextra("aspectx", 1);
    intent.putextra("aspecty", 1);
    // outputx outputy 是裁剪图片宽高
    intent.putextra("outputx", 64);
    intent.putextra("outputy", 64);
    intent.putextra("return-data", true);
    startactivityforresult(intent, photoresoult);
  }
}

弹出的对话框(仿照微信来完成)：mydialog

package com.yihang.dialog;
import com.yihang.photodemo.r;
import android.app.dialog;
import android.content.context;
import android.view.gravity;
import android.view.view;
import android.view.viewgroup;
import android.view.window;
import android.view.view.onclicklistener;
/**
 * 对话框实现类
 * @author admin
 *
 */
public class mydialog extends dialog implements onclicklistener {
  public mydialog(context context) {
    super(context,r.style.mydialog);
    //初始化布局
        setcontentview(r.layout.layout_select_photo);
        window dialogwindow = getwindow();
        dialogwindow.setlayout(viewgroup.layoutparams.fill_parent, viewgroup.layoutparams.wrap_content);
        dialogwindow.setgravity(gravity.bottom);
        setcanceledontouchoutside(true);
        findviewbyid(r.id.btn_camera).setonclicklistener(this);
        findviewbyid(r.id.btn_gallery).setonclicklistener(this);
        findviewbyid(r.id.btn_cancel).setonclicklistener(this);
  }
  @override
  public void onclick(view v) {
    // todo auto-generated method stub
    switch (v.getid()) {
    case r.id.btn_camera:
      onbuttonclicklistener.camera();
      break;
    case r.id.btn_gallery:
      onbuttonclicklistener.gallery();
      break;
    case r.id.btn_cancel:
      onbuttonclicklistener.cancel();
      break;
    default:
      break;
    }
  }
  /**
   * 按钮的监听器
   * @author orathee
   * @date 2014年3月20日 下午4:28:39
   */
  public interface onbuttonclicklistener{
    void camera();
    void gallery();
    void cancel();
  }
  private onbuttonclicklistener onbuttonclicklistener;
  public onbuttonclicklistener getonbuttonclicklistener() {
    return onbuttonclicklistener;
  }
  public void setonbuttonclicklistener(onbuttonclicklistener onbuttonclicklistener) {
    this.onbuttonclicklistener = onbuttonclicklistener;
  }
}

对话框的布局文件：layout_select_photo.xml

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:gravity="bottom">
  <linearlayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:background="@drawable/btn_style_alert_dialog_background"
    android:padding="20dp">
      <textview
        android:id="@+id/btn_camera"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textsize="18sp"
        android:background="@drawable/btn_style_alert_dialog_button"
        android:textcolor="#0f0f0f"
        android:text="拍照"
        android:shadowdx="0.5"
        android:shadowdy="0.5"
        android:shadowradius="0.5"
        android:shadowcolor="#ffffff"
        android:layout_marginbottom="10dp"
        android:padding="10dp"
        android:gravity="center"/>
      <textview
        android:id="@+id/btn_gallery"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textsize="18sp"
        android:background="@drawable/btn_style_alert_dialog_button"
        android:textcolor="#0f0f0f"
        android:text="从相册中选择"
        android:shadowdx="0.5"
        android:shadowdy="0.5"
        android:shadowradius="0.5"
        android:shadowcolor="#ffffff"
        android:layout_marginbottom="10dp"
        android:padding="10dp"
        android:gravity="center"/>
      <textview
        android:id="@+id/btn_cancel"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/btn_style_alert_dialog_cancel"
        android:textcolor="#ffffff"
        android:textsize="18sp"
        android:text="取消"
        android:shadowdx="0.5"
        android:shadowdy="0.5"
        android:shadowradius="0.5"
        android:shadowcolor="#000000"
        android:layout_margintop="10dp"
        android:padding="10dp"
        android:gravity="center"/>
  </linearlayout>
</linearlayout>

自定义的gridview:

package com.yihang.mygridview;
import android.content.context;
import android.util.attributeset;
import android.widget.gridview;
public class mygridview extends gridview {
  public mygridview(context context, attributeset attrs) {
    super(context, attrs);
    // todo auto-generated constructor stub
  }
  public mygridview(context context) {
    super(context);
  }
  public mygridview(context context, attributeset attrs, int defstyle) {
    super(context);
  }
  @override
  protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {
    // todo auto-generated method stub
    int expandspec = measurespec.makemeasurespec(integer.max_value >> 2,
        measurespec.at_most);
    super.onmeasure(widthmeasurespec, expandspec);
  }
}

源码下载：http://xiazai.jb51.net/201707/yuanma/photodemo.rar

总结

以上所述是小编给大家介绍的android中使用gridview实现仿微信图片上传功能(附源代码)，希望对大家有所帮助