（1）程序说明

在android API的AudioManager中，提供了调节手机音量的办法。

audioMa.adjustVolume(AudioManager.ADJUST_LOWER, 0);

audioMa.adjustVolume(AudioManager.ADJUST_RAISE, 0);

也可以调节手机声音的模式为震动或者静音

audioMa.setRingerMode(AudioManager.RINGER_MODE_NORMAL);

audioMa.setRingerMode(AudioManager.RINGER_MODE_SILENT);

audioMa.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);

（2）布局文件

<?xml version="1.0" encoding="utf-8"?><AbsoluteLayout  android:id="@+id/layout1"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  android:background="@drawable/white"  xmlns:android="http://schemas.android.com/apk/res/android">  <TextView    android:id="@+id/myText1"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="@string/str_text1"    android:textSize="16sp"    android:textColor="@drawable/black"    android:layout_x="20px"    android:layout_y="42px"  >  </TextView>  <ImageView    android:id="@+id/myImage"    android:layout_width="48px"    android:layout_height="48px"    android:layout_x="110px"    android:layout_y="32px"  >  </ImageView>  <TextView    android:id="@+id/myText2"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="@string/str_text2"    android:textSize="16sp"    android:textColor="@drawable/black"    android:layout_x="20px"    android:layout_y="102px"  >  </TextView>  <ProgressBar    android:id="@+id/myProgress"    style="?android:attr/progressBarStyleHorizontal"    android:layout_width="160dip"    android:layout_height="wrap_content"    android:max="7"    android:progress="5"    android:layout_x="110px"    android:layout_y="102px"  >  </ProgressBar>  <ImageButton    android:id="@+id/downButton"    android:layout_width="100px"    android:layout_height="100px"    android:layout_x="50px"    android:layout_y="162px"    android:src="@drawable/down"  >  </ImageButton>  <ImageButton    android:id="@+id/upButton"    android:layout_width="100px"    android:layout_height="100px"    android:layout_x="150px"    android:layout_y="162px"    android:src="@drawable/up"  >  </ImageButton>  <ImageButton    android:id="@+id/normalButton"    android:layout_width="60px"    android:layout_height="60px"    android:layout_x="50px"    android:layout_y="272px"    android:src="@drawable/normal"  >  </ImageButton>  <ImageButton    android:id="@+id/muteButton"    android:layout_width="60px"    android:layout_height="60px"    android:layout_x="120px"    android:layout_y="272px"    android:src="@drawable/mute"  >  </ImageButton>  <ImageButton    android:id="@+id/vibrateButton"    android:layout_width="60px"    android:layout_height="60px"    android:layout_x="190px"    android:layout_y="272px"    android:src="@drawable/vibrate"  >  </ImageButton></AbsoluteLayout>

（3）代码：

package com.liuzuyi.soundmode;import android.app.Activity;import android.content.Context;import android.media.AudioManager;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageButton;import android.widget.ImageView;import android.widget.ProgressBar;public class MainActivity extends Activity { private ImageView myimage; private ImageButton downbutton; private ImageButton upbutton; private ImageButton normalbutton; private ImageButton mutebutton; private ImageButton vibratebutton; private ProgressBar myprogress; private AudioManager audioMa; private int volume; protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);audioMa =(AudioManager)getSystemService(Context.AUDIO_SERVICE);myimage = (ImageView)findViewById(R.id.myImage);myprogress =(ProgressBar)findViewById(R.id.myProgress);downbutton =(ImageButton)findViewById(R.id.downButton);upbutton =(ImageButton)findViewById(R.id.upButton);normalbutton=(ImageButton)findViewById(R.id.normalButton);mutebutton=(ImageButton)findViewById(R.id.muteButton);vibratebutton=(ImageButton)findViewById(R.id.vibrateButton);volume =audioMa.getStreamVolume(AudioManager.STREAM_RING);myprogress.setProgress(volume);int mode =audioMa.getRingerMode();if(mode == AudioManager.RINGER_MODE_NORMAL ){myimage.setImageDrawable(getResources().getDrawable(R.drawable.normal));}else if(mode == AudioManager.RINGER_MODE_SILENT){myimage.setImageDrawable(getResources().getDrawable(R.drawable.mute));}else if(mode == AudioManager.RINGER_MODE_VIBRATE){myimage.setImageDrawable(getResources().getDrawable(R.drawable.vibrate));}downbutton.setOnClickListener( new OnClickListener() {public void onClick(View v) {audioMa.adjustVolume(AudioManager.ADJUST_LOWER, 0);volume = audioMa.getStreamVolume(AudioManager.STREAM_RING);myprogress.setProgress(volume);int mode =audioMa.getRingerMode();if(mode == AudioManager.RINGER_MODE_NORMAL ){myimage.setImageDrawable(getResources().getDrawable(R.drawable.normal));}else if(mode == AudioManager.RINGER_MODE_SILENT){myimage.setImageDrawable(getResources().getDrawable(R.drawable.mute));}else if(mode == AudioManager.RINGER_MODE_VIBRATE){myimage.setImageDrawable(getResources().getDrawable(R.drawable.vibrate));}}});upbutton.setOnClickListener( new OnClickListener() {public void onClick(View v) {audioMa.adjustVolume(AudioManager.ADJUST_RAISE, 0);volume = audioMa.getStreamVolume(AudioManager.STREAM_RING);myprogress.setProgress(volume);int mode =audioMa.getRingerMode();if(mode == AudioManager.RINGER_MODE_NORMAL ){myimage.setImageDrawable(getResources().getDrawable(R.drawable.normal));}else if(mode == AudioManager.RINGER_MODE_SILENT){myimage.setImageDrawable(getResources().getDrawable(R.drawable.mute));}else if(mode == AudioManager.RINGER_MODE_VIBRATE){myimage.setImageDrawable(getResources().getDrawable(R.drawable.vibrate));}}});normalbutton.setOnClickListener( new OnClickListener() {public void onClick(View v) {audioMa.setRingerMode(AudioManager.RINGER_MODE_NORMAL);    volume = audioMa.getStreamVolume(AudioManager.STREAM_RING);    myprogress.setProgress(volume);myimage.setImageDrawable(getResources().getDrawable(R.drawable.normal));}});mutebutton.setOnClickListener( new OnClickListener() {public void onClick(View v) {audioMa.setRingerMode(AudioManager.RINGER_MODE_SILENT);    volume = audioMa.getStreamVolume(AudioManager.STREAM_RING);    myprogress.setProgress(volume);myimage.setImageDrawable(getResources().getDrawable(R.drawable.mute));}});vibratebutton.setOnClickListener( new OnClickListener() {public void onClick(View v) {audioMa.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);    volume = audioMa.getStreamVolume(AudioManager.STREAM_RING);    myprogress.setProgress(volume);myimage.setImageDrawable(getResources().getDrawable(R.drawable.vibrate));}});}}

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