android电话处理

与电话相关权限

拨打电话
  android.permission.CALL_PHONE，允许程序从非系统拨号器里输入电话号码
通话权限
  android.permission.CALL_PRIVILEGED，允许程序拨打电话，替换系统的拨号器界面

读取电话状态
android.permission.READ_PHONE_STATE，访问电话状态

修改电话状态
   android.permission.MODIFY_PHONE_STATE，修改电话状态，如飞行模式，但不包  替换系统拨号器界面

处理拨出电话
  android.permission.PROCESS_OUTGOING_CALLS，允许程序监视，修改或放弃播出电话
AndroidManifest.xml

<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />

扩展阅读： android权限大全
----------------------------------------------------------------
Android在电话状态改变是会发送
action为android.intent.action.PHONE_STATE的广播

而拨打电话时会发送
action为android.intent.action.NEW_OUTGOING_CALL的广播
例如：

IntentFilter filter = new IntentFilter();
filter.addAction("android.intent.action.NEW_OUTGOING_CALL");
filter.addAction("android.intent.action.PHONE_STATE");

-------------------------------------------------
去电时：
    * 未接：phone_state=OFFHOOK;
   * 挂断：phone_state=IDLE
* 来电时: *
   * 未接：phone_state=RINGING
   * 已接：phone_state=OFFHOOK;
   * 挂断：phone_state=IDLE
-------------------------------------------

JAVA代码

public class PhoneCallReceiver extends BaseReceiver {
/**
//拨打电话判断及获取号码
if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){

String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
*/

	@Override
	public void onReceive(Context context, Intent intent) {
		
		String phone_state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);	
		/*去电时：
		 * 未接：phone_state=OFFHOOK;
		 * 挂断：phone_state=IDLE
		 * 来电时:		 * 
		 * 未接：phone_state=RINGING
		 * 已接：phone_state=OFFHOOK;
		 * 挂断：phone_state=IDLE**/
		System.out.println("phone_state======"+phone_state);
		String incoming_number = intent.getStringExtra("incoming_number");
//String incoming_number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER );
	    String outgoing_number = intent.getStringExtra("android.intent.extra.PHONE_NUMBER");
	    System.out.println("incoming_number======"+incoming_number);
	    System.out.println("outgoing_number======"+outgoing_number);
	    //去电设值
	    if(outgoing_number!=null && outgoing_number.length()>0){
	    	 System.out.println("去电号码"+outgoing_number);
		    
	    }	 
	    //来电设值
	    if(incoming_number!=null && incoming_number.length()>0){
	    	 System.out.println("来电号码"+incoming_number);
	    }	
	    
		if (TelephonyManager.EXTRA_STATE_OFFHOOK.equals(phone_state) || TelephonyManager.EXTRA_STATE_RINGING.equals(phone_state))
		{	
		System.out.println("去电话未接或来电未接及来电已接");

		}
		if (TelephonyManager.EXTRA_STATE_IDLE.equals(phone_state))
		{	
                    System.out.println("电话已挂断");
		}		
		return;
	}
	
}

参考文章：
Android之TelephonyManager使用
Android 电话状态的监听(来电和去电）