准备五张图片，分别为：voice_lower、voice_off、voice_on、voice_raise、voice_vibrate
在main.xml中：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00ff33">
<ImageButton
android:id="@+id/voiceon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/voice_on" />
<ImageButton
android:id="@+id/voiceoff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/voice_off" />
<ImageButton
android:id="@+id/voicevibrate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/voice_vibrate" />
<ImageButton
android:id="@+id/voicelower"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/voice_lower" />
<ImageButton
android:id="@+id/voiceraise"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/voice_raise" />
</LinearLayout>
在MyAudioManagerDemo.java中：
package com.li.audiomanager;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.Toast;
public class MyAudioManagerDemo extends Activity {
private ImageButton voiceOn = null ;
private ImageButton voiceOff = null ;
private ImageButton voiceVibrate = null ;
private ImageButton voiceLower = null ;
private ImageButton voiceRaise = null ;
private AudioManager audio = null ;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.main);
this.voiceOn = (ImageButton) super.findViewById(R.id.voiceon) ;
this.voiceOff = (ImageButton) super.findViewById(R.id.voiceoff) ;
this.voiceVibrate = (ImageButton) super.findViewById(R.id.voicevibrate) ;
this.voiceLower = (ImageButton) super.findViewById(R.id.voicelower) ;
this.voiceRaise = (ImageButton) super.findViewById(R.id.voiceraise) ;
this.audio = (AudioManager) super
.getSystemService(Context.AUDIO_SERVICE);
this.voiceOn.setOnClickListener(new VoiceOnOnClickListenerImpl()) ;
this.voiceOff.setOnClickListener(new VoiceOffOnClickListenerImpl()) ;
this.voiceVibrate.setOnClickListener(new VoiceVibrateOnClickListenerImpl()) ;
this.voiceLower.setOnClickListener(new VoiceLowerOnClickListenerImpl()) ;
this.voiceRaise.setOnClickListener(new VoiceRaiseOnClickListenerImpl()) ;
}
private void playAudio(){
MediaPlayer media = MediaPlayer.create(this, R.raw.ms);
media.setLooping(true);// 循环播放
try {
media.prepare() ;
} catch (Exception e) {
}
media.start() ;
}
private class VoiceOnOnClickListenerImpl implements OnClickListener {
public void onClick(View v) {
MyAudioManagerDemo.this.audio.setRingerMode(AudioManager.RINGER_MODE_NORMAL) ;
Toast.makeText(MyAudioManagerDemo.this, "手机音量开启！", Toast.LENGTH_SHORT).show() ;
}
}
private class VoiceOffOnClickListenerImpl implements OnClickListener {
public void onClick(View v) {
MyAudioManagerDemo.this.audio.setRingerMode(AudioManager.RINGER_MODE_SILENT) ;
Toast.makeText(MyAudioManagerDemo.this, "手机静音！", Toast.LENGTH_SHORT).show() ;
}
}
private class VoiceVibrateOnClickListenerImpl implements OnClickListener {
public void onClick(View v) {
MyAudioManagerDemo.this.audio.setRingerMode(AudioManager.RINGER_MODE_VIBRATE) ;
Toast.makeText(MyAudioManagerDemo.this, "手机为震动模式！", Toast.LENGTH_SHORT).show() ;
}
}
private class VoiceLowerOnClickListenerImpl implements OnClickListener {
public void onClick(View v) {
MyAudioManagerDemo.this.audio.adjustVolume(AudioManager.ADJUST_LOWER, 0) ;
Toast.makeText(MyAudioManagerDemo.this, "音量减小！", Toast.LENGTH_SHORT).show() ;
}
}
private class VoiceRaiseOnClickListenerImpl implements OnClickListener {
public void onClick(View v) {
MyAudioManagerDemo.this.audio.adjustVolume(AudioManager.ADJUST_RAISE, 0) ;
Toast.makeText(MyAudioManagerDemo.this, "音量增加！", Toast.LENGTH_SHORT).show() ;
}
}
}