Android Service（二）

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调用Android系统服务
package net.blogjava.mobile;import android.app.Activity;import android.content.Context;import android.media.AudioManager;import android.os.Bundle;import android.provider.MediaStore.Audio;import android.telephony.PhoneStateListener;import android.telephony.ServiceState;import android.telephony.TelephonyManager;import android.util.Log;import android.widget.Toast;public class Main extends Activity{    public class MyPhoneCallListener extends PhoneStateListener    {        @Override        public void onCallStateChanged(int state, String incomingNumber)        {            AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);;            switch (state)            {                case TelephonyManager.CALL_STATE_IDLE:                    audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);                    break;                case TelephonyManager.CALL_STATE_RINGING:                    if ("12345678".equals(incomingNumber))                    {                        audioManager                                .setRingerMode(AudioManager.RINGER_MODE_SILENT);                    }                    break;            }            super.onCallStateChanged(state, incomingNumber);        }    }    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);        MyPhoneCallListener myPhoneCallListener = new MyPhoneCallListener();        tm.listen(myPhoneCallListener, PhoneStateListener.LISTEN_CALL_STATE);    }}
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