您需要广播接收器…
在清单中声明广播接收器…
<receiver android:name=".PhoneStateBroadcastReceiver"> <intent-filter> <action android:name="android.intent.action.PHONE_STATE"/> </intent-filter></receiver>
还声明使用权限…
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
广播接收器类…
package x.y;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.telephony.PhoneStateListener;import android.telephony.TelephonyManager;public class PhoneStateBroadcastReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); telephonyManager.listen(new CustomPhoneStateListener(context), PhoneStateListener.LISTEN_CALL_STATE); }}还有一类可自定义电话状态侦听器…
package x.y;import android.content.Context;import android.telephony.PhoneStateListener;import android.telephony.TelephonyManager;public class CustomPhoneStateListener extends PhoneStateListener { //private static final String TAG = "PhoneStateChanged"; Context context; //Context to make Toast if required public CustomPhoneStateListener(Context context) { super(); this.context = context; } @Override public void onCallStateChanged(int state, String incomingNumber) { super.onCallStateChanged(state, incomingNumber); switch (state) { case TelephonyManager.CALL_STATE_IDLE: //when Idle i.e no call Toast.makeText(context, "Phone state Idle", Toast.LENGTH_LONG).show(); break; case TelephonyManager.CALL_STATE_OFFHOOK: //when Off hook i.e in call //Make intent and start your service here Toast.makeText(context, "Phone state Off hook", Toast.LENGTH_LONG).show(); break; case TelephonyManager.CALL_STATE_RINGING: //when Ringing Toast.makeText(context, "Phone state Ringing", Toast.LENGTH_LONG).show(); break; default: break; } }}
