Android 自定义无限轮播

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文章目录

自定义无限轮播

 

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前言

根据项目需求写的无限自动填充的轮播控件

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提示：以下是本篇文章正文内容，下面案例可供参考

一、效果

二、使用步骤

1.引入库

代码如下（示例）：单个名片

package com.dtstar.mobile.ui.home.view;

import android.content.Context;
import android.support.constraint.ConstraintLayout;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.dtstar.core.bean.HomeHotRoom;
import com.dtstar.framework.util.util.DisplayUtils;
import com.dtstar.mobile.ChatApplicationLike;
import com.dtstar.mobile.R;
import com.dtstar.mobile.room.RoomFrameActivity;
import com.dtstar.mobile.ui.home.adpater.YYHomeAdapter;
import com.dtstar.mobile.ui.home.dialog.YYHomeDialog;
import com.dtstar.mobile.utils.ImageLoadUtils;
import com.juxiao.library_utils.log.LogUtil;

import static com.netease.nim.uikit.common.util.sys.ScreenUtil.screenWidth;

public class RecommendCardView extends ConstraintLayout {

    private ImageView ivAvatar, ivLabel, ivFrame, ivSupportlabel;
    private TextView tvRedu, tvInformation;
    private int imgWidth, imgHeight;

    public RecommendCardView(Context context) {
        super(context);
        init();
    }

    public RecommendCardView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public RecommendCardView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        View view = inflate(getContext(), R.layout.card_layout, this);
        ivAvatar = view.findViewById(R.id.iv_avatar);
        ivLabel = view.findViewById(R.id.iv_label);
        ivFrame = view.findViewById(R.id.iv_frame);
        ivSupportlabel = view.findViewById(R.id.iv_supportlabel);
        tvRedu = view.findViewById(R.id.tv_redu);
        tvInformation = view.findViewById(R.id.tv_information);
        ConstraintLayout constraintlayout = view.findViewById(R.id.constraintlayout);

        int screenWidth = DisplayUtils.getScreenWidth(getContext());

        imgWidth = (screenWidth - DisplayUtils.dip2px(getContext(), 30)) / 3;
        imgHeight = imgWidth + DisplayUtils.dip2px(getContext(), 23);
        ViewGroup.LayoutParams params = constraintlayout.getLayoutParams();
        params.width = imgWidth;
        params.height = imgHeight;
        constraintlayout.setLayoutParams(params);

        ViewGroup.LayoutParams avatarParams = ivAvatar.getLayoutParams();
        avatarParams.width = imgWidth;
        avatarParams.height = imgWidth;
        ivAvatar.setLayoutParams(avatarParams);

        ViewGroup.LayoutParams frameParams = ivFrame.getLayoutParams();
        frameParams.width = imgWidth;
        frameParams.height = imgWidth;
        ivFrame.setLayoutParams(frameParams);

    }

    /**
     * 设置头像网络图片url
     */
    public void setIvAvatarUrl(String url) {
        ImageLoadUtils.loadImageWidthHeight(getContext(), url, ivAvatar, imgWidth, imgWidth);
    }

    /**
     * 设置头像本地资源图片ID
     */
    public void setIvAvatarID(int imgId) {
        ivAvatar.setImageResource(imgId);
    }

    /**
     * 设置房间标签网络图片url
     */
    public void setIvLabelUrl(String url) {
        ImageLoadUtils.loadImage(getContext(), url, ivLabel);
    }

    /**
     * 设置房间标签本地资源图片ID
     */
    public void setIvLabelID(int imgId) {
        ivLabel.setImageResource(imgId);
    }

    /**
     * 设置房间热度
     */
    public void setTvRedu(String str) {
        tvRedu.setText(str);
    }

    /**
     * 设置房间热度的显示与隐藏
     */
    public void setTvReduVisibility(int visibility) {
        tvRedu.setVisibility(visibility);
    }

    /**
     * 设置房间标题
     */
    public void setTvInformation(String str) {
        tvInformation.setText(str);
    }

    /**
     * 设置边框
     */
    public void setIvFrame(String url) {
        ImageLoadUtils.loadImageWidthHeight(getContext(), url, ivFrame, imgWidth, imgWidth);
    }

    /**
     * 设置助力标签
     */
    public void setIvSupportlabel(String url) {
        ImageLoadUtils.loadImage(getContext(), url, ivSupportlabel);
    }

    /**
     * 设置点击事件
     */
    public void setOnItemClickListener(OnRecommendClickListener listener) {
        mClickListener = listener;
    }

    public interface OnRecommendClickListener {
        void onRecommendClick();
    }

    private OnRecommendClickListener mClickListener;

    @Override
    protected void onAttachedToWindow() {
//        LogUtil.e("oomTest : ", "RecommendCardView onViewAdded " + ChatApplicationLike.addRecommendCardViewCount());
        super.onAttachedToWindow();
    }

    @Override
    protected void onDetachedFromWindow() {
//        LogUtil.e("oomTest : ", "RecommendCardView onViewRemoved" + ChatApplicationLike.subRecommendCardViewCount());
        super.onDetachedFromWindow();
    }
}

一屏要展示的

package com.dtstar.mobile.ui.home.view;

import android.content.Context;
import android.opengl.Visibility;
import android.support.constraint.ConstraintLayout;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.dtstar.core.bean.HomeHotRoom;
import com.dtstar.mobile.ChatApplicationLike;
import com.dtstar.mobile.R;
import com.dtstar.mobile.room.RoomFrameActivity;
import com.dtstar.mobile.utils.ImageLoadUtils;
import com.dtstar.mobile.utils.UIHelper;
import com.juxiao.library_utils.log.LogUtil;

public class RecommendView extends ConstraintLayout {

    private RecommendCardView recommendcardview1,recommendcardview2,recommendcardview3;


    public RecommendView(Context context) {
        super(context);
        init(context);
    }

    public RecommendView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public RecommendView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    private void init(Context context){
        View view = inflate(context, R.layout.item_layout_recommend,this);
        recommendcardview1 = (RecommendCardView) view.findViewById(R.id.recommendcardview1);
        recommendcardview2 = (RecommendCardView) view.findViewById(R.id.recommendcardview2);
        recommendcardview3 = (RecommendCardView) view.findViewById(R.id.recommendcardview3);
    }

    /**设置第一组数据*/
    public void setCardview1(HomeHotRoom homeHotRoom){
        if(!homeHotRoom.isBg()){
            recommendcardview1.setIvAvatarUrl(homeHotRoom.getAvatar());
            recommendcardview1.setIvLabelUrl(homeHotRoom.getTagPict());
            recommendcardview1.setTvRedu(String.valueOf(homeHotRoom.getDegree()));
            recommendcardview1.setTvReduVisibility(homeHotRoom.getDegree()==0 ? GONE : VISIBLE);
            if(homeHotRoom.getRecommTagPicUrl() != null && homeHotRoom.getRecommTagPicUrl().length() > 0){
                recommendcardview1.setIvFrame(homeHotRoom.getRecommTagPicUrl());
            }
            if(homeHotRoom.getBoostTagPic() != null && homeHotRoom.getBoostTagPic().length() > 0){
                recommendcardview1.setIvSupportlabel(homeHotRoom.getBoostTagPic());
            }
        }else{
            recommendcardview1.setIvAvatarID(R.mipmap.home_img_vacant_position);
        }
        recommendcardview1.setTvInformation( (homeHotRoom.getTitle() != null && homeHotRoom.getTitle().length() > 0) ? homeHotRoom.getTitle() : homeHotRoom.getNick() );
        recommendcardview1.setOnClickListener(v -> {
            if(homeHotRoom.isBg()){
                UIHelper.showRecommendedPositionH5(getContext());
            }else{
                RoomFrameActivity.start(getContext(), homeHotRoom.getUid(), homeHotRoom.getType());
            }
        });
        recommendcardview1.setVisibility(VISIBLE);
    }

    /**设置第二组数据*/
    public void setCardview2(HomeHotRoom homeHotRoom){
        if(!homeHotRoom.isBg()){
            recommendcardview2.setIvAvatarUrl(homeHotRoom.getAvatar());
            recommendcardview2.setIvLabelUrl(homeHotRoom.getTagPict());
            recommendcardview2.setTvRedu(String.valueOf(homeHotRoom.getDegree()));
            recommendcardview2.setTvReduVisibility(homeHotRoom.getDegree()==0 ? GONE : VISIBLE);
            if(homeHotRoom.getRecommTagPicUrl() != null && homeHotRoom.getRecommTagPicUrl().length() > 0){
                recommendcardview2.setIvFrame(homeHotRoom.getRecommTagPicUrl());
            }
            if(homeHotRoom.getBoostTagPic() != null && homeHotRoom.getBoostTagPic().length() > 0){
                recommendcardview2.setIvSupportlabel(homeHotRoom.getBoostTagPic());
            }
        }else{
            recommendcardview2.setIvAvatarID(R.mipmap.home_img_vacant_position);
        }
        recommendcardview2.setTvInformation( (homeHotRoom.getTitle() != null && homeHotRoom.getTitle().length() > 0) ? homeHotRoom.getTitle() : homeHotRoom.getNick() );
        recommendcardview2.setOnClickListener(v -> {
            if(homeHotRoom.isBg()){
                UIHelper.showRecommendedPositionH5(getContext());
            }else{
                RoomFrameActivity.start(getContext(), homeHotRoom.getUid(), homeHotRoom.getType());
            }
        });
        recommendcardview2.setVisibility(VISIBLE);
    }

    /**设置第三组数据*/
    public void setCardview3(HomeHotRoom homeHotRoom){
        if(!homeHotRoom.isBg()){
            recommendcardview3.setIvAvatarUrl(homeHotRoom.getAvatar());
            recommendcardview3.setIvLabelUrl(homeHotRoom.getTagPict());
            recommendcardview3.setTvRedu(String.valueOf(homeHotRoom.getDegree()));
            recommendcardview3.setTvReduVisibility(homeHotRoom.getDegree()==0 ? GONE : VISIBLE);
            if(homeHotRoom.getRecommTagPicUrl() != null && homeHotRoom.getRecommTagPicUrl().length() > 0){
                recommendcardview3.setIvFrame(homeHotRoom.getRecommTagPicUrl());
            }
            if(homeHotRoom.getBoostTagPic() != null && homeHotRoom.getBoostTagPic().length() > 0){
                recommendcardview3.setIvSupportlabel(homeHotRoom.getBoostTagPic());
            }
        }else{
            recommendcardview3.setIvAvatarID(R.mipmap.home_img_vacant_position);
        }
        recommendcardview3.setTvInformation( (homeHotRoom.getTitle() != null && homeHotRoom.getTitle().length() > 0) ? homeHotRoom.getTitle() : homeHotRoom.getNick() );
        recommendcardview3.setOnClickListener(v -> {
            if(homeHotRoom.isBg()){
                UIHelper.showRecommendedPositionH5(getContext());
            }else{
                RoomFrameActivity.start(getContext(), homeHotRoom.getUid(), homeHotRoom.getType());
            }
        });
        recommendcardview3.setVisibility(VISIBLE);
    }

    @Override
    protected void onAttachedToWindow() {
        //LogUtil.e("oomTest : ", "RecommendView onViewAdded " + ChatApplicationLike.addRecommendViewCount());
        super.onAttachedToWindow();
    }

    @Override
    protected void onDetachedFromWindow() {
        //LogUtil.e("oomTest : ", "RecommendView onViewRemoved" + ChatApplicationLike.subRecommendViewCount());
        super.onDetachedFromWindow();
    }
}

最后整体的动画及无限轮播填充的设置，（根据具体需求，可在这个文件中直接修改） 

package com.dtstar.mobile.ui.home.view;

import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.NonNull;
import android.support.constraint.ConstraintLayout;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

import com.dtstar.core.bean.HomeHotRoom;
import com.dtstar.mobile.ChatApplicationLike;
import com.dtstar.mobile.R;
import com.juxiao.library_utils.log.LogUtil;

import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;

public class RecommendBannerView extends ConstraintLayout {

    private ViewPager viewPager;
    private LinearLayout linearLayout; //轮播指示器的，展示添加上不用，需要的时候在修改修改
    private List<HomeHotRoom> Hlist = new ArrayList<>();
    private boolean listSizeBoolean, isAutoPlay;
    private int screenWidth = 0; //获取屏幕宽度

    private RecommendAdapter recommendAdapter;

    private RecommendBannerHandler recommendBannerHandler = new RecommendBannerHandler(this);

    private static class RecommendBannerHandler extends Handler {
        private WeakReference<RecommendBannerView> weakReference;

        RecommendBannerHandler(RecommendBannerView recommendBannerView) {
            weakReference = new WeakReference<>(recommendBannerView);
        }

        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                case 1:
                    RecommendBannerView recommendBannerView = weakReference.get();
                    if (recommendBannerView != null) {
                        recommendBannerView.doPlay();
                    }
                    break;
            }
        }
    }

    private void doPlay() {
        int countItem = (viewPager.getCurrentItem() + 1);
        viewPager.setCurrentItem(countItem);
        sendPlay();
    }

    public RecommendBannerView(Context context) {
        super(context);
        init();
    }

    public RecommendBannerView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public RecommendBannerView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        View view = inflate(getContext(), R.layout.recommendbannerview_layout, this);
//        LogUtil.e("oomTest : RecommendBannerView init ");
        viewPager = view.findViewById(R.id.viewpager);
        linearLayout = view.findViewById(R.id.layout);
        ViewPagerTouchEvent();
    }

    public void setList(List<HomeHotRoom> Hlist) {
        if (this.Hlist.size() > 0) {
            this.Hlist.clear();
            if (recommendAdapter != null) {
                recommendAdapter.notifyDataSetChanged();
            }
        }
        this.Hlist.addAll(Hlist);
        if (this.Hlist.size() > 3) {
            listSizeBoolean = true;
            sendPlay();
        } else {
            listSizeBoolean = false;
            stopPlay();
        }
        recommendAdapter = null;
        viewPager.setAdapter(null);
        viewPager.removeAllViews();
        recommendAdapter = new RecommendAdapter();
        viewPager.setAdapter(recommendAdapter);
    }

    private class RecommendAdapter extends PagerAdapter {

        @Override
        public int getCount() {
            return listSizeBoolean ? Integer.MAX_VALUE : 1;
        }

        @Override
        public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
            return view == object;
        }

        @NonNull
        @Override
        public Object instantiateItem(@NonNull ViewGroup container, int position) {

            RecommendView recommendView = new RecommendView(getContext());
            if (listSizeBoolean) {
                recommendView.setCardview1(Hlist.get(((position * 3) % Hlist.size())));
                recommendView.setCardview2(Hlist.get((((position * 3) + 1) % Hlist.size())));
                recommendView.setCardview3(Hlist.get((((position * 3) + 2) % Hlist.size())));
            } else {
                if (Hlist.size() == 1) {
                    recommendView.setCardview1(Hlist.get(((position * 3) % Hlist.size())));
                } else if (Hlist.size() == 2) {
                    recommendView.setCardview1(Hlist.get(((position * 3) % Hlist.size())));
                    recommendView.setCardview2(Hlist.get((((position * 3) + 1) % Hlist.size())));
                } else if (Hlist.size() == 3) {
                    recommendView.setCardview1(Hlist.get(((position * 3) % Hlist.size())));
                    recommendView.setCardview2(Hlist.get((((position * 3) + 1) % Hlist.size())));
                    recommendView.setCardview3(Hlist.get((((position * 3) + 2) % Hlist.size())));
                }
            }

            container.addView(recommendView);
            return recommendView;
        }

        @Override
        public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
            container.removeView((View) object);
        }
    }

    private void ViewPagerTouchEvent() {
        viewPager.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                switch (motionEvent.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        //当时MotionEvent.ACTION_DOWN和ACTION_MOVE,就移除handler发送的message.removeMessages.333
                        stopPlay();
                        break;
                    case MotionEvent.ACTION_MOVE:
                        stopPlay();
                        break;
                    //当用户手松开时ACTION_UP,就继续使用sendEmptyMessageDelayed发送handler的消息.333
                    case MotionEvent.ACTION_UP:
                        sendPlay();
                    default:
                        break;
                }
                return false;
            }
        });
    }

//    @Override
//    public void onViewAdded(View view) {
//        LogUtil.e("oomTest : ", "RecommendBannerView onViewAdded " + ChatApplicationLike.addRecommendBannerCount());
//        super.onViewAdded(view);
//    }
//
//    @Override
//    public void onViewRemoved(View view) {
//        LogUtil.e("oomTest : ", "RecommendBannerView onViewRemoved" + ChatApplicationLike.subRecommendBannerCount());
//        super.onViewRemoved(view);
//    }

    @Override
    protected void onAttachedToWindow() {
//        LogUtil.e("oomTest : ", "RecommendBannerView onViewAdded " + ChatApplicationLike.addRecommendBannerCount());
        super.onAttachedToWindow();
    }

    @Override
    protected void onDetachedFromWindow() {
//        LogUtil.e("oomTest : ", "RecommendBannerView onViewRemoved" + ChatApplicationLike.subRecommendBannerCount());
        onDestroy();
        super.onDetachedFromWindow();
    }

    private void sendPlay() {
        if (listSizeBoolean && isAutoPlay && recommendBannerHandler != null) {
            recommendBannerHandler.removeCallbacksAndMessages(null);
            recommendBannerHandler.sendEmptyMessageDelayed(1, 10000);
        }
    }

    private void stopPlay() {
        if (recommendBannerHandler != null) {
            recommendBannerHandler.removeCallbacksAndMessages(null);
        }
    }

    public void setAutoPlay(boolean isPlay) {
        this.isAutoPlay = isPlay;
    }

    public void onAutoPlay() {
        isAutoPlay = true;
        sendPlay();
    }

    public void onPausePlay() {
        isAutoPlay = false;
        stopPlay();
    }

    public void onDestroy() {
        isAutoPlay = false;
        stopPlay();
        recommendBannerHandler = null;
        if (viewPager != null) {
            viewPager.setOnTouchListener(null);
        }
    }
}

总结

自己做个记录，下次遇到类似需求，直接修改修改

本文地址：https://blog.csdn.net/qq_34165238/article/details/108854128