Android 识别来电号码

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识别来电号码



学习内容: 你将学会如何使用PhoneStateIntentReceiver来识别来电号码 . 可能出现的情况是, 当有来电时会使音乐播放关闭.

难度: 2 of 5

界面效果:


很不幸，没有



描述:
我们会创建一个PhoneStateIntentReceiver，当PhoneState 状态改变时它会发送消息 Handler. 请看一看 详细注释 的例子实现(实际上注册发生在onCreate()-方法):
同志们啊，恕我注释就不翻了哈。

Java:

package org.anddev.android.reactonincomingcall; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.telephony.Phone; import android.telephony.PhoneStateIntentReceiver; import android.util.Log; public class ReactOnIncomingCall extends Activity { /** Used to recognize Messages from the   * myPhoneStateChangedHandler. */ final int PHONECALLSTATE_RECONGNIZE_ID = 0x539; /** Will notify us on changes to the PhoneState*/ PhoneStateIntentReceiver myPsir = null;   /** This Handler will react on the messages the * we made our PhoneStateIntentReceiver myPsir * notify us on. */   Handler myPhoneStateChangedHandler = new Handler(){     @Override     public void handleMessage(Message msg) {      // Recognize the Message by its what-ID      if(msg.what == PHONECALLSTATE_RECONGNIZE_ID){       /* Our PhoneStateIntentReceiver myPsir        * now contains some recent data, we can grab. */       Phone.State myState = myPsir.getPhoneState();       // Put the Info to the logger for debugging       Log.d("PhoneCallStateNotified", myState.toString());       if(myState == Phone.State.RINGING){          // Celebrate =D       }           }     }   };   /** Called when the activity is first created. */   @Override   public void onCreate(Bundle icicle) { // Set some simple layout   super.onCreate(icicle);   setContentView(R.layout.main);   /* Create a new PhoneStateIntentReceiver    * that will pass messages to the handler h    * as it receives Intents we make it notify    * us below*/   this.myPsir = new PhoneStateIntentReceiver(this, myPhoneStateChangedHandler);   /* As we want to get notified on changes    * to the Phones-State we tell our    * PhoneStateIntentReceiver myPsir,    * that we wan to get notified with the ID    * (PHONECALLSTATE_RECONGNIZE_ID) we pass to him    */   this.myPsir.notifyPhoneCallState(PHONECALLSTATE_RECONGNIZE_ID);     /* Register the Intent with the system. */   this.myPsir.registerIntent();   } }