package com.example.hejunlin.seamlessvideo;
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Gravity;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.FrameLayout;
import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
/**
* 兼容8.0版本
*/
public class MainActivity extends AppCompatActivity {
private SurfaceView mVideoSurface, mNextSurface;
private FrameLayout mFrame;
private MediaPlayer mCurrentMediaPlayer, mNextMediaPlayer;
private Handler mHandler;
private int mIndex = 0;
private String path1 = Environment.getExternalStorageDirectory().getAbsolutePath() + "/1.mp4";
private String path2 = Environment.getExternalStorageDirectory().getAbsolutePath() + "/2.mp4";
private String[] paths = new String[]{path1, path2};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (!checkPermission()) {
startAction();
} else {
if (checkPermission()) {
requestPermissionAndContinue();
} else {
startAction();
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
mHandler.removeCallbacks(mPlayRun);
if (mCurrentMediaPlayer != null) {
mCurrentMediaPlayer.release();
mCurrentMediaPlayer = null;
}
if (mNextMediaPlayer != null) {
mNextMediaPlayer.release();
mNextMediaPlayer = null;
}
}
Runnable mPlayRun = new Runnable() {
@Override
public void run() {
Log.d(MainActivity.class.getSimpleName(), "run: ");
mCurrentMediaPlayer.pause();
mNextMediaPlayer.pause();
mNextMediaPlayer.reset();
try {
if (mIndex == 0) {
String path = paths[mIndex % paths.length];
Log.d(MainActivity.class.getSimpleName(), "path1: " + path);
mIndex++;
mCurrentMediaPlayer.setDataSource(MainActivity.this, Uri.parse(path));
mCurrentMediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer player) {
Log.d(MainActivity.class.getSimpleName(), "start 1");
mCurrentMediaPlayer.start();
mVideoSurface.setVisibility(View.GONE);
}
});
mCurrentMediaPlayer.prepareAsync();
mNextMediaPlayer.setDataSource(MainActivity.this, Uri.parse(path));
mNextMediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer arg0) {
mNextMediaPlayer.start();
}
});
mNextMediaPlayer.prepareAsync();
} else {
String path = paths[mIndex % paths.length];
mIndex++;
Log.d(MainActivity.class.getSimpleName(), "path2: " + path);
mNextMediaPlayer.setDataSource(MainActivity.this, Uri.parse(path));
mNextMediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer arg0) {
mNextMediaPlayer.start();
Log.d(MainActivity.class.getSimpleName(), "start 2");
}
});
mNextMediaPlayer.prepareAsync();
}
} catch (Exception e) {
e.printStackTrace();
}
mHandler.postDelayed(mPlayRun, 10000); // 第一個視頻10s鍾
}
};
class VideoSurfaceHodlerCallback implements SurfaceHolder.Callback {
@Override
public void surfaceChanged(
SurfaceHolder holder,
int format, int width, int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mCurrentMediaPlayer.setDisplay(mVideoSurface.getHolder());
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
}
class NextVideoSurfaceHodlerCallback implements SurfaceHolder.Callback {
@Override
public void surfaceChanged(
SurfaceHolder holder,
int format, int width, int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mNextMediaPlayer.setDisplay(mNextSurface.getHolder());
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
}
private static final int PERMISSION_REQUEST_CODE = 200;
private boolean checkPermission() {
return ContextCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
&& ContextCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
;
}
private void requestPermissionAndContinue() {
if (ContextCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
&& ContextCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(this, WRITE_EXTERNAL_STORAGE)
&& ActivityCompat.shouldShowRequestPermissionRationale(this, READ_EXTERNAL_STORAGE)) {
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);
alertBuilder.setCancelable(true);
alertBuilder.setTitle("權限申請");
alertBuilder.setMessage("獲取對應權限");
alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void onClick(DialogInterface dialog, int which) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{WRITE_EXTERNAL_STORAGE
, READ_EXTERNAL_STORAGE}, PERMISSION_REQUEST_CODE);
}
});
AlertDialog alert = alertBuilder.create();
alert.show();
Log.e("", "permission denied, show dialog");
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{WRITE_EXTERNAL_STORAGE,
READ_EXTERNAL_STORAGE}, PERMISSION_REQUEST_CODE);
}
} else {
startAction();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == PERMISSION_REQUEST_CODE) {
if (permissions.length > 0 && grantResults.length > 0) {
boolean flag = true;
for (int i = 0; i < grantResults.length; i++) {
if (grantResults[i] != PackageManager.PERMISSION_GRANTED) {
flag = false;
}
}
if (flag) {
startAction();
} else {
finish();
}
} else {
finish();
}
} else {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
private void startAction() {
mFrame = new FrameLayout(this);
setContentView(mFrame);
mHandler = new Handler();
mCurrentMediaPlayer = new MediaPlayer();
mNextMediaPlayer = new MediaPlayer();
mVideoSurface = new SurfaceView(this);
mVideoSurface.getHolder().addCallback(new VideoSurfaceHodlerCallback());
mNextSurface = new SurfaceView(this);
mNextSurface.getHolder().addCallback(new NextVideoSurfaceHodlerCallback());
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
1080,
1920);
lp.gravity = Gravity.LEFT | Gravity.TOP;
mVideoSurface.setLayoutParams(lp);
lp = new FrameLayout.LayoutParams(
1080,
1920);
lp.gravity = Gravity.LEFT | Gravity.TOP;
mNextSurface.setLayoutParams(lp);
mFrame.addView(mNextSurface);
mFrame.addView(mVideoSurface);
mHandler.postDelayed(mPlayRun, 0);
}
}
Android視頻直播源碼中如何實現無縫切碼流
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