java - Android - 在打电话时启动应用程序

Question

有没有办法开发一个在用户接到电话时启动的应用程序？我无法真正详细说明这个想法，但想知道是否有一些电话可以让这种情况发生。

Answer 1

您可以像这样使用广播接收器

public class PhoneStatReceiver extends BroadcastReceiver{        
    private static final String TAG = "PhoneStatReceiver"; 
    private static boolean incomingFlag = false;
    private static String incoming_number = null;
    @Override
    public void onReceive(Context context, Intent intent) {
            if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){                        
                    incomingFlag = false;
                    String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);        
                    Log.i(TAG, "call OUT:"+phoneNumber);                        

            }else{                        
                    TelephonyManager tm = (TelephonyManager)context.getSystemService(Service.TELEPHONY_SERVICE);                        
                    switch (tm.getCallState()) {
                    case TelephonyManager.CALL_STATE_RINGING:
                            incomingFlag = true;//标识当前是来电
                            incoming_number = intent.getStringExtra("incoming_number");
                        Log.i(TAG, "RINGING :"+ incoming_number);
                            break;
                    case TelephonyManager.CALL_STATE_OFFHOOK:                                
                            if(incomingFlag){
                                    Log.i(TAG, "incoming ACCEPT :"+ incoming_number);
                            }
                            break;
                    case TelephonyManager.CALL_STATE_IDLE:                                
                            if(incomingFlag){
                                    Log.i(TAG, "incoming IDLE");                                
                            }
                            break;
                    } 
            }

    }

}

像这样在 AndroidManifest 中注册此接收器

<receiver android:name=".filter.PhoneStatReceiver">  

            <intent-filter>

                 <action android:name="android.intent.action.PHONE_STATE"/>           

                 <action android:name="android.intent.action.NEW_OUTGOING_CALL" />

            </intent-filter>

</receiver>

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

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