如何在Android中实现短视频画心效果

如何在Android中实现短视频画心效果？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

主布局

<?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:orientation="vertical"     tools:context=".MainActivity"> <androidx.recyclerview.widget.RecyclerView     android:id="@+id/ree"     android:layout_width="match_parent"     android:layout_height="match_parent"></androidx.recyclerview.widget.RecyclerView>     <SurfaceView         android:id="@+id/surface"         android:layout_width="match_parent"         android:layout_height="match_parent"></SurfaceView> </RelativeLayout>

适配器布局`

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical" android:layout_width="match_parent"     android:layout_height="match_parent">     <com.shuyu.gsyvideoplayer.video.StandardGSYVideoPlayer         android:id="@+id/detail"         android:layout_width="match_parent"         android:layout_height="match_parent" /> </LinearLayout>

Activity页面逻辑

package com.example.pagfany; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.PorterDuff; import android.graphics.PorterDuffXfermode; import android.graphics.RectF; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.Display; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.widget.Toast; import androidx.annotation.NonNull; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.RecyclerView; import java.util.ArrayList; import java.util.List; import butterknife.BindView; import butterknife.ButterKnife; public class MainActivity extends AppCompatActivity implements BaseLinearLayoutManager.OnListener, SurfaceHolder.Callback {     @BindView(R.id.ree)     RecyclerView ree;     @BindView(R.id.surface)     SurfaceView surface;     private BaseeAdap baseeAdap;     private SurfaceHolder surfaceHolder;     private Display display;     Handler handler=new Handler(){         @Override         public void handleMessage(@NonNull Message msg) {//清除画板上的内容             super.handleMessage(msg);            if (msg.what==1){                Canvas canvas = surfaceHolder.lockCanvas();                Paint paint=new Paint(Paint.ANTI_ALIAS_FLAG);                paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));                paint.setColor(Color.TRANSPARENT);                RectF rectF = new RectF(0,0,display.getWidth(),display.getHeight());                canvas.drawRect(rectF,paint);                surfaceHolder.unlockCanvasAndPost(canvas);            }         }     };     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         ButterKnife.bind(this);         BaseLinearLayoutManager baseLinearLayoutManager = new BaseLinearLayoutManager(this);         baseLinearLayoutManager.setOnListener(this);//接口回调         ree.setLayoutManager(baseLinearLayoutManager);         List<StringBean> beans = new ArrayList<>();         for (int i = 0; i < shuzu.videoUrls.length; i++) {             beans.add(new StringBean(shuzu.videoUrls[i]));         }         baseeAdap = new BaseeAdap(R.layout.basevideo, beans);         ree.setAdapter(baseeAdap);         display=getWindowManager().getDefaultDisplay();//通过管理器获取屏幕信息         surface.setZOrderOnTop(true);//置顶         surface.getHolder().setFormat(PixelFormat.TRANSPARENT);//画板透明社         surface.getHolder().addCallback(this);//接口回调     }     @Override     public void init() {     }     @Override     public void reselat() {         baseeAdap.getreselat();//调用适配器的方法     }     @Override     public void getplay(int position) {         baseeAdap.gepalay(position);//滑动播放！！有错误     }     @Override     protected void onDestroy() {         super.onDestroy();         baseeAdap.getAllreselat();//关闭程序清空缓存     }     private long time=0;     private float y;     private float x;     @Override     public void surfaceCreated(@NonNull SurfaceHolder holder) {         surfaceHolder=holder;         surface.setOnTouchListener(new View.OnTouchListener() {             @Override             public boolean onTouch(View v, MotionEvent event) {                 switch (event.getAction()){//双击                     case MotionEvent.ACTION_DOWN://按下按钮                         if (time==0){                             time=System.currentTimeMillis();//第一次时间                         }else {                             if (System.currentTimeMillis()-time<250){//当前时间 减去time                                  y = event.getY();                                  x = event.getX();//点击的坐标                                 huaxin();//调用花心的方法                                 handler.sendEmptyMessageAtTime(1,500);                             }else {                                 time=System.currentTimeMillis();                             }                         }                         break;                 }                 return false;             }         });     }     private void huaxin() {         Canvas canvas = surfaceHolder.lockCanvas();         Paint paint=new Paint(Paint.ANTI_ALIAS_FLAG);         paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));//当想设置图片重叠的相交状态时         paint.setColor(Color.TRANSPARENT);         RectF rectF = new RectF(0,0,display.getWidth(),display.getHeight());         canvas.drawRect(rectF,paint);//清空画板         Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);         canvas.drawBitmap(bitmap,x,y,null);//注意不要用画笔 当前画笔是透明色         surfaceHolder.unlockCanvasAndPost(canvas);     }     @Override     public void surfaceChanged(@NonNull SurfaceHolder holder, int format, int width, int height) {     }     @Override     public void surfaceDestroyed(@NonNull SurfaceHolder holder) {     } }

适配器

package com.example.pagfany; import android.util.Log; import androidx.annotation.Nullable; import com.chad.library.adapter.base.BaseQuickAdapter; import com.chad.library.adapter.base.BaseViewHolder; import com.shuyu.gsyvideoplayer.GSYVideoManager; import com.shuyu.gsyvideoplayer.video.StandardGSYVideoPlayer; import java.util.List; public class BaseeAdap extends BaseQuickAdapter<StringBean, BaseViewHolder> {     private StandardGSYVideoPlayer standardGSYVideoPlayer;     public BaseeAdap(int layoutResId, @Nullable List<StringBean> data) {         super(layoutResId, data);     }     private int aa=-1;     @Override     protected void convert(BaseViewHolder helper, StringBean item) {       standardGSYVideoPlayer =helper.getView(R.id.detail);         standardGSYVideoPlayer.setUp(item.getA(),true,"美女");         standardGSYVideoPlayer.startPlayLogic();     }     public void getreselat() {         standardGSYVideoPlayer.release();     }     public void getAllreselat() {         GSYVideoManager.releaseAllVideos();     }     public void gepalay(int position) {         standardGSYVideoPlayer.setUp(shuzu.videoUrls[position],true,"美女");         standardGSYVideoPlayer.startPlayLogic();     } }

自定义线性布局

package com.example.pagfany; import android.content.Context; import android.util.Log; import android.view.View; import androidx.annotation.NonNull; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.PagerSnapHelper; import androidx.recyclerview.widget.RecyclerView; public class BaseLinearLayoutManager extends LinearLayoutManager implements RecyclerView.OnChildAttachStateChangeListener {     public BaseLinearLayoutManager(Context context) {         super(context);     }     public BaseLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {         super(context, orientation, reverseLayout);     }     private OnListener onListener;//接口     public void setOnListener(OnListener onListener) {         this.onListener = onListener;     }     interface OnListener{         void init();         void reselat();         void getplay(int position);     }     private PagerSnapHelper pagerSnapHelper;//     @Override     public void onAttachedToWindow(RecyclerView view) {         super.onAttachedToWindow(view);         pagerSnapHelper=new PagerSnapHelper();         pagerSnapHelper.attachToRecyclerView(view);//RecyclerView的滑动         view.addOnChildAttachStateChangeListener(this);//滑动状态监听     }     private static final String TAG = "BaseLinearLayoutManager";     @Override     public void onScrollStateChanged(int state) {         super.onScrollStateChanged(state);         switch (state){             case RecyclerView.SCROLL_STATE_IDLE:                 View snapView = pagerSnapHelper.findSnapView(this);                 int position = getPosition(snapView);                 onListener.getplay(position);                 Log.i(TAG, "onScrollStateChanged: "+position);                 break;         }     }     @Override     public void onChildViewAttachedToWindow(@NonNull View view) {         Log.i(TAG, "onChildViewAttachedToWindow: "+132456);     }     @Override     public void onChildViewDetachedFromWindow(@NonNull View view) {           if (onListener!=null){               onListener.reselat();//滑动下一个页面 让上个视频没有声音 清除缓存           }     } }

Android是什么

Android是一种基于Linux内核的自由及开放源代码的操作系统，主要使用于移动设备，如智能手机和平板电脑，由美国Google公司和开放手机联盟领导及开发。

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