运行截图
AndroidMenifest.xml清单文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="csdn.example.com.notification">
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="csdn.example.com.notification.CameraAlbumTest"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
<activity android:name=".PlayVideoTest.Main4Activity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
MainActivity.java
package csdn.example.com.notification.PlayVideoTest;
import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;
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.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.VideoView;
import java.io.File;
import csdn.example.com.notification.R;
public class Main4Activity extends AppCompatActivity implements View.OnClickListener {
private VideoView videoView;
Button start, pause, replay;
TextView time;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main4);
videoView = (VideoView) findViewById(R.id.video_view);
start = (Button) findViewById(R.id.start);
pause = (Button) findViewById(R.id.pause);
replay = (Button) findViewById(R.id.replay);
time = (TextView) findViewById(R.id.time);
start.setOnClickListener(this);
pause.setOnClickListener(this);
replay.setOnClickListener(this);
/**
* 运行时权限处理 ,动态申请WITRE_EXTERNAL_STORAGE权限,由于会在SD卡中放置一个视频文件,程序为了播放这个视频文件
* 才必须拥有访问SD卡的权限才行
*/
if (ContextCompat.checkSelfPermission(Main4Activity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) !=
PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(Main4Activity.this, new String[]{
Manifest.permission.WRITE_EXTERNAL_STORAGE
}, 1);
} else {
initVideoPath();
}
}
/**
* 设置视频路径,会在SD卡的根目录上放置movie.mp4 的视频文件
*/
private void initVideoPath() {
File file = new File(Environment.getExternalStorageDirectory(), "movie.mp4");
videoView.setVideoPath(file.getPath());//指定视频文件路径
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case 1:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
initVideoPath();
} else {
Toast.makeText(this, "拒绝将无法使用程序", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.start:
if (!videoView.isPlaying()) {
videoView.start(); //开始播放
}
break;
case R.id.pause:
if (videoView.isPlaying()) {
videoView.pause(); //暂停播放
}
break;
case R.id.replay:
if (videoView.isPlaying()) {
videoView.resume(); //重新播放
}
break;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (videoView != null) {
videoView.suspend();//将资源释放掉
}
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/start"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="播放" />
<Button
android:id="@+id/pause"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="暂停" />
<Button
android:id="@+id/replay"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="重复" />
</LinearLayout>
<VideoView
android:id="@+id/video_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>