通過(guò)VideoView播放本地、網(wǎng)絡(luò)視頻
知識(shí)點(diǎn):
1.VideoView基本使用
2.訪問(wèn)內(nèi)部存儲(chǔ)
3.android 6.0動(dòng)態(tài)獲取權(quán)限
4.VideoView支持的視頻類型
本文中一些方法使用,通過(guò)搜索資料得來(lái)势决。知道簡(jiǎn)單怎么用,具體原理還沒(méi)研究后面有機(jī)會(huì)詳細(xì)分析下
下面是代碼:
public class MainActivity extends AppCompatActivity implements OnClickListener {
Uri uri01;
Uri uri02;
Uri uri03;
VideoView videoView;
private static final String ACTIVITY_TAG = "MainActivity";
private static final String[] PERMISSION = new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
videoView = (VideoView) findViewById(R.id.videoView);
videoView.setMediaController(new MediaController(this));
findViewById(R.id.btn01).setOnClickListener(this);
findViewById(R.id.btn02).setOnClickListener(this);
findViewById(R.id.btn03).setOnClickListener(this);
uri01 = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.test);
//uri02 = Uri.parse("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4");//MP4視頻
//uri02 = Uri.parse("http://playertest.longtailvideo.com/adaptive/bipbop/gear4/prog_index.m3u8");//m3u8視頻
uri02 = Uri.parse("http://live.3gv.ifeng.com/zixun.m3u8");//m3u8直播流,測(cè)試結(jié)果不支持直播流
String sdcard = Environment.getExternalStorageDirectory().getPath() + "/Download/big.mp4";
uri03 = Uri.parse(sdcard);
}
public void onClick(View view) {
switch(view.getId()) {
case R.id.btn01:
Log.i(ACTIVITY_TAG,"btn01");
Log.i(ACTIVITY_TAG,"按鈕01");
videoView.stopPlayback();
videoView.setVideoURI(uri01);
videoView.start();
videoView.requestFocus();
break;
case R.id.btn02:
Log.i(ACTIVITY_TAG,"btn02");
Log.i(ACTIVITY_TAG,"按鈕02");
videoView.stopPlayback();
videoView.setVideoPath(uri02.toString());
videoView.start();
videoView.requestFocus();
break;
case R.id.btn03:
Log.i(ACTIVITY_TAG,"btn03");
Log.i(ACTIVITY_TAG,"按鈕03");
isExist();
//android 6.0以后需要?jiǎng)討B(tài)獲取權(quán)限蓝撇,因?yàn)檫@個(gè)問(wèn)題導(dǎo)致我之前一直無(wú)法播放本地視頻果复。一開(kāi)始使用的是在Manifest里加權(quán)限,但沒(méi)有效果
if(ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
if(ActivityCompat.shouldShowRequestPermissionRationale(this,Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
}else {
ActivityCompat.requestPermissions(this,PERMISSION,1);
}
}
videoView.stopPlayback();
videoView.setVideoURI(uri03);
videoView.start();
videoView.requestFocus();
break;
default:
break;
}
}
private void isExist() {
//通過(guò)Environment.getExternalStorageDirectory().getPath()獲取我也沒(méi)搞清楚是SD卡還是內(nèi)部存儲(chǔ) 我是華為V8 沒(méi)有外置SD卡
String filePath = Environment.getExternalStorageDirectory().getPath() + "/Download/big.mp4";
File file = new File(filePath);
if(file.exists()) {
Log.i(ACTIVITY_TAG,filePath);
Log.i(ACTIVITY_TAG,"文件存在");
//關(guān)于Log.i()渤昌,我每次如果只用一個(gè)Log.i(),在logcat里不顯示虽抄,只有下面在寫(xiě)一次才會(huì)都顯示
} else {
Log.i(ACTIVITY_TAG,filePath);
Log.i(ACTIVITY_TAG,"不存在");
}
}
}