Requirement description

For example, when advertising is played, each video lasts for 15 seconds. When switching between videos, machines with poor performance may have a black screen for a period of time, and the experience is not good. Next, we need to solve the problem of black screen.

Solution

1. Two surfaceView modes are used, which can't be tested
2. Using a MediaPlayer, add a layer of ImageView on top of the MediaPlayer. After each playback, get the image of the last frame of the video to ImageView. After the video switch is completed, ImageView is hidden. This kind of cycle is feasible

practice

1. Obtain the video streaming picture mode. Through the MediaMetadataRetriever, it is found that the Bitmap obtained by some machines may be empty and cannot be solved. Give up
2. With TextureView, you can get the Bitmap of the current frame. If possible, paste the code below

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);
    }


}

Related links, github address, remember to give little star, star

https://github.com/WinsonZhou/blog