Android使用MediaPlayer和TextureView实现视频无缝切换

package com.winson.blog.video; import android.graphics.Bitmap;import android.graphics.SurfaceTexture;import android.media.MediaPlayer;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.support.annotation.Nullable;import android.support.v4.app.Fragment;import android.util.Log;import android.view.Gravity;import android.view.LayoutInflater;import android.view.Surface;import android.view.TextureView;import android.view.View;import android.view.ViewGroup;import android.widget.FrameLayout;import android.widget.ImageView; import java.io.IOException; public class VideoFragment extends Fragment {  public static final String TAG = VideoFragment.class.getSimpleName();  String TEST_PATH = Environment.getExternalStorageDirectory().getAbsolutePath() + "/testmp4.mp4"; int mIndex = 0; String path1 = TEST_PATH; String[] paths = new String[]{TEST_PATH, TEST_PATH, TEST_PATH, TEST_PATH, TEST_PATH, TEST_PATH};  boolean destory; Handler mHandler; Runnable mPlayRun; FrameLayout content; TextureView textureView; ImageView frameImage; MediaPlayer mediaPlayer; Bitmap lastFrameBitmap;  public void updateResources(String[] paths) { this.paths = paths; if(mHandler != null && mPlayRun!= null){  mHandler.post(mPlayRun); } }  @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState);  mHandler = new Handler(); mediaPlayer = new MediaPlayer(); mPlayRun = new Runnable() {   @Override  public void run() {   if (mediaPlayer == null || destory) {   return;   }  mediaPlayer.pause();  mediaPlayer.reset();   try {   String path = paths[mIndex % paths.length];   mIndex++;    mediaPlayer.setDataSource(getActivity(), Uri.parse(path));   mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {    @Override   public void onPrepared(MediaPlayer arg0) {    mediaPlayer.start();    frameImage.setVisibility(View.GONE);   }   });   mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {   @Override   public void onCompletion(MediaPlayer mp) {    frameImage.setVisibility(View.VISIBLE);    Bitmap currentFrameBitmap = textureView.getBitmap();    frameImage.setImageBitmap(currentFrameBitmap);    if (lastFrameBitmap != null) {    lastFrameBitmap.recycle();    }    lastFrameBitmap = currentFrameBitmap;     mHandler.post(mPlayRun);   }   });   mediaPlayer.prepareAsync();   } catch (Exception e) {   e.printStackTrace();  }  }  }; }   public void release() { mHandler.removeCallbacks(mPlayRun); if (mediaPlayer != null) {  mediaPlayer.pause();  mediaPlayer.release(); } }  public Bitmap getBitmap() { return textureView == null ? null : textureView.getBitmap(); }  @Override public void onDestroy() { super.onDestroy(); release(); }  @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { content = new FrameLayout(getActivity());  FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT); lp.gravity = Gravity.LEFT | Gravity.TOP;  textureView = new TextureView(getActivity()); textureView.setLayoutParams(lp); content.addView(textureView);  frameImage = new ImageView(getActivity()); frameImage.setScaleType(ImageView.ScaleType.FIT_XY); frameImage.setLayoutParams(lp); content.addView(frameImage);  textureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {  @Override  public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {  Surface s = new Surface(surface);  mediaPlayer.setSurface(s);   }   @Override  public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {  }   @Override  public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {  return false;  }   @Override  public void onSurfaceTextureUpdated(SurfaceTexture surface) {  } });  return content; }  @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState);  testPlay(); }  public void testPlay() {// mediaPlayer.pause();// mediaPlayer.reset();//// try {//  mediaPlayer.setDataSource(getActivity(), Uri.parse(TEST_PATH));//  mediaPlayer.prepare();//  mediaPlayer.start();// } catch (IOException e) {//  e.printStackTrace();// }  mHandler.post(mPlayRun); }  }