安卓播放音频
播放音频
1.设置界面
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/play"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Play"
/>
<Button
android:id="@+id/pause"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Pause"
/>
<Button
android:id="@+id/stop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Stop"
/>
</LinearLayout>
2.配置权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="demo.jq.com.playaudiotest">
<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">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
</manifest>
3.实现功能
package demo.jq.com.playaudiotest;
import android.content.pm.PackageManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v4.os.EnvironmentCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.io.File;
import java.util.jar.Manifest;
/**
* @author jim
* implements View.OnClickListener 继承接口
*/
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private MediaPlayer mediaPlayer = new MediaPlayer();
private static final String TAG = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button play = (Button) findViewById(R.id.play);
Button pause = (Button) findViewById(R.id.pause);
Button stop = (Button) findViewById(R.id.stop);
play.setOnClickListener(this);
pause.setOnClickListener(this);
stop.setOnClickListener(this);
if (ContextCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE},1);
} else {
initMediaPlayer();
}
}
private void initMediaPlayer() {
try {
Uri setDataSourceuri = Uri.parse("android.resource://demo.jq.com.playaudiotest/"+R.raw.music);
mediaPlayer.setDataSource(this,setDataSourceuri);
mediaPlayer.prepare();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case 1:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
initMediaPlayer();
} else {
Toast.makeText(this,"拒绝权限将无法使用程序",Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.play:
if (!mediaPlayer.isPlaying()) {
mediaPlayer.start();
}
break;
case R.id.pause:
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();
}
break;
case R.id.stop:
if (mediaPlayer.isPlaying()) {
mediaPlayer.reset();
initMediaPlayer();
}
break;
default:
break;
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
}
}
}
这里有个关键就是获取音频文件的地址。
有几种情况,一种是播放sd卡,一种是播放应用中的音频,一种是播放在线的。
上面的案例是播放应用中的。
有意思的!确实能播放!