ToneGenerator+MessageHandler用法

package android.demo.dialtone;

import java.util.HashMap;

import android.app.Activity;
import android.content.Context;
import android.media.AudioManager;
import android.media.ToneGenerator;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class DialTone extends Activity implements OnClickListener
{
    /** Called when the activity is first created. */
	private final String TAG="DialTone";
	private static final int PLAY_TONE=0x01;
	private static final int DTMF_DURATION_MS = 120;
	private Object mToneGeneratorLock = new Object();
	private ToneGenerator mToneGenerator;
	private static boolean mDTMFToneEnabled;
	private static final HashMap<String,Integer> mToneMap = new HashMap<String,Integer>();

	
	static 
	{        
		mToneMap.put("1", ToneGenerator.TONE_DTMF_1);   
		mToneMap.put("2", ToneGenerator.TONE_DTMF_2);        
		mToneMap.put("3", ToneGenerator.TONE_DTMF_3);        
		mToneMap.put("4", ToneGenerator.TONE_DTMF_4);        
		mToneMap.put("5", ToneGenerator.TONE_DTMF_5);        
		mToneMap.put("6", ToneGenerator.TONE_DTMF_6);        
		mToneMap.put("7", ToneGenerator.TONE_DTMF_7);        
		mToneMap.put("8", ToneGenerator.TONE_DTMF_8);        
		mToneMap.put("9", ToneGenerator.TONE_DTMF_9);        
		mToneMap.put("0", ToneGenerator.TONE_DTMF_0);        
		mToneMap.put("#", ToneGenerator.TONE_DTMF_P);        
		mToneMap.put("*", ToneGenerator.TONE_DTMF_S);    

	}
	
	  
	@Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Log.d(TAG,"onCreate");
        try 
        {            
        	//
        	mDTMFToneEnabled = Settings.System.getInt(getContentResolver(),Settings.System.DTMF_TONE_WHEN_DIALING, 1) == 1;
        	synchronized (mToneGeneratorLock) 
        	{                
        		if (mDTMFToneEnabled && mToneGenerator == null) 
        		{                    
        			mToneGenerator = new ToneGenerator(AudioManager.STREAM_DTMF, 80); //設定聲音大小           
        			setVolumeControlStream(AudioManager.STREAM_DTMF);                
        		}            
        	}        
        } catch (Exception e) 
        {            
        	Log.d(TAG, e.getMessage());            
        	mDTMFToneEnabled = false;            
        	mToneGenerator = null;        
        }
        Button button01 = (Button)findViewById(R.id.Button01);
        Button button02 = (Button)findViewById(R.id.Button02);
        Button button03 = (Button)findViewById(R.id.Button03);
        Button button04 = (Button)findViewById(R.id.Button04);
        Button button05 = (Button)findViewById(R.id.Button05);
        Button button06 = (Button)findViewById(R.id.Button06);
        Button button07 = (Button)findViewById(R.id.Button07);
        Button button08 = (Button)findViewById(R.id.Button08);
        Button button09 = (Button)findViewById(R.id.Button09);
        
        
        button01.setOnClickListener(this);
        button02.setOnClickListener(this);
        button03.setOnClickListener(this);
        button04.setOnClickListener(this);
        button05.setOnClickListener(this);
        button06.setOnClickListener(this);
        button07.setOnClickListener(this);
        button08.setOnClickListener(this);
        button09.setOnClickListener(this);
        

    	
    }



	@Override
	public void onClick(View v)
	{
		// TODO Auto-generated method stub
		
		int id=v.getId();
		Integer currentTone=null;     //GetCurrent Tone
		switch(id)
		{
			case R.id.Button01:
				Log.d(TAG,"onClick Button01");
				currentTone=mToneMap.get("1");
				break;
			case R.id.Button02:
				Log.d(TAG,"onClick Button02");
				currentTone=(Integer)mToneMap.get("2");
				break;
			case R.id.Button03:
				Log.d(TAG,"onClick Button03");
				currentTone=(Integer)mToneMap.get("3");
				break;
			case R.id.Button04:
				Log.d(TAG,"onClick Button04");
				currentTone=(Integer)mToneMap.get("4");
				break;
			case R.id.Button05:
				Log.d(TAG,"onClick Button05");
				currentTone=(Integer)mToneMap.get("5");
				break;
			case R.id.Button06:
				Log.d(TAG,"onClick Button06");
				currentTone=(Integer)mToneMap.get("6");
				break;
			case R.id.Button07:
				Log.d(TAG,"onClick Button07");
				currentTone=(Integer)mToneMap.get("7");
				break;
			case R.id.Button08:
				Log.d(TAG,"onClick Button08");
				currentTone=(Integer)mToneMap.get("8");
				break;
			case R.id.Button09:
				Log.d(TAG,"onClick Button09");
				currentTone=(Integer)mToneMap.get("9");
				break;
		}
		
		if (null != currentTone) 
		{            
			//
			Log.d(TAG,"currentTone="+currentTone.intValue());
			Message msg = mHandler.obtainMessage(PLAY_TONE, currentTone.intValue());            
			mHandler.sendMessage(msg);            
			//
			//playTone(currentTone);        
		}else
		{
			Log.d(TAG,"!!!!!!");
		}
	}
	
	private Handler mHandler= new Handler()
	{
		public void handleMessage(Message msg)
		{
			try
			{
				switch(msg.what)
				{
					case PLAY_TONE:
						Integer tone_id=(Integer)msg.obj;
						if(tone_id!=null)
						{
							PlayTone(tone_id.intValue());
						}
						break;
				}
			}catch(Exception e)
			{
				
			}
		}
	};
	private void PlayTone(int tone)
	{
		if(!mDTMFToneEnabled) return;
		AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
		int ringerMode = audioManager.getRingerMode();
		if (ringerMode == AudioManager.RINGER_MODE_SILENT|| 
			ringerMode == AudioManager.RINGER_MODE_VIBRATE) 
		{            //靜音或是震動則不發出聲音
			return;        
		}
		synchronized(mToneGeneratorLock)
		{
			if(mToneGenerator==null)
			{
				return;
			}
			mToneGenerator.startTone(tone,DTMF_DURATION_MS);
		}
	}
}

//=================================================================
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<TableLayout android:id="@+id/TableLayout01" android:layout_width="wrap_content" android:layout_height="wrap_content">
<TableRow android:id="@+id/TableRow01" android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button android:text="Digit1" android:id="@+id/Button01" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Digit2" android:id="@+id/Button02" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Digit3" android:id="@+id/Button03" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>

</TableRow>
<TableRow android:id="@+id/TableRow02" android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button android:text="Digit4" android:id="@+id/Button04" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Digit5" android:id="@+id/Button05" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Digit6" android:id="@+id/Button06" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</TableRow>
<TableRow android:id="@+id/TableRow03" android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button android:text="Digit7" android:id="@+id/Button07" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Digit8" android:id="@+id/Button08" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Digit9" android:id="@+id/Button09" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</TableRow>
</TableLayout>
</LinearLayout>