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本篇文章为大家展示了Android中怎么利用MediaPlayer和TextureView实现视频无缝切换，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
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实践
1.获取视频流图片方式，通过MediaMetadataRetriever，测试发现，部分机器获取的Bitmap可能为空，无法解决，放弃
2.使用TextureView方式，可以获取当前帧的Bitmap，可行，下面贴代码
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 path2 = 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); } }
上述内容就是Android中怎么利用MediaPlayer和TextureView实现视频无缝切换，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注创新互联行业资讯频道。