android开发中 自己播放器 MP4文件打开方式选择自己开发app实现步骤。红色重要具体实现方法
package="activiity.date.gfonda.com.fonda">
android:name="android.hardware.touchscreen"
android:required="false" />
android:name="android.software.leanback"
android:required="true" />
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/Theme.Leanback">
android:name=".MainActivity"
android:banner="@mipmap/ic_launcher"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:logo="@mipmap/ic_launcher"
android:screenOrientation="landscape">
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package activiity.date.gfonda.com.fonda;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.database.Cursor;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.widget.MediaController;
import android.widget.VideoView;
/*
* MainActivity class that loads MainFragment
*/
public class MainActivity extends Activity {
/**
* Called when the activity is first created.
*/
private String videopath;
private VideoView videoview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainactivity);
videoview=findViewById(R.id.videoView2);
Intent intent = getIntent();
String action = intent.getAction();//action
String type = intent.getType();//类型
if (Intent.ACTION_VIEW.equals(action) && type != null && "video/mp4".equals(type)) {
// Uri uri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
//如果是媒体类型需要从数据库获取路径
//String filePath=getRealPathFromURI(uri);
Uri uri = intent.getData();
String str = getRealPathFromURI(uri);
// AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
// builder.setTitle("确认" ) ;
// builder.setMessage(str) ;
// builder.setPositiveButton("是" , null );
// builder.show();
videoview.setVideoPath(str);
}else {
videopath="file:///android_asset/sp.mp4";
//videoview.setVideoPath(videopath);
String uris = "android.resource://" + getPackageName() + "/" + R.raw.sp;
// String uri="";
videoview.setVideoPath(uris);
}
videoview.requestFocus();
//创建MediaController对象
MediaController mediaController = new MediaController(this);
videoview.setMediaController(mediaController);
videoview.start();
//监听视频播放完的代码
videoview.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mPlayer) {
// TODO Auto-generated method stub
mPlayer.start();
mPlayer.setLooping(true);
}
});
}
/**
* 通过Uri获取文件在本地存储的真实路径
*/
private String getRealPathFromURI(Uri contentUri) {
String[] proj = {MediaStore.MediaColumns.DATA};
Cursor cursor=getContentResolver().query(contentUri, proj, null, null, null);
if(cursor.moveToNext()){
return cursor.getString(cursor.getColumnIndex(MediaStore.MediaColumns.DATA));
}
cursor.close();
return null;
}
}