如何获得带有日期和时间的去电号码？

Question

我正在收到来电详细信息（Number,Name,Date）。但是如何获得去电细节。我已经编写了用于拨出电话详细信息的代码，但是会抛出异常NullPointerException。以下是我的MyCallReceiver.java文件和清单文件

  public void onReceive(Context context, Intent intent) {

    this.context = context;



    if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_RINGING)) {

        String incomingNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);

        Toast.makeText(context, "Call From : " + incomingNumber, Toast.LENGTH_LONG).show();

        doToast(getContactName(context, incomingNumber) + " " + incomingNumber);
        String currentDateTimeString = DateFormat.getDateTimeInstance().format(new Date());
        doToast(currentDateTimeString +" "+incomingNumber);


    } else if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_IDLE) || intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {
        Toast.makeText(context, "DETECTED CALL HANG UP EVENT", Toast.LENGTH_LONG).show();

        String outgoingNumber=intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
        Toast.makeText(context,"Calling To :"+outgoingNumber,Toast.LENGTH_LONG).show();
    }
 }

Answer 1

public void onReceive(Context context, Intent intent)
{
    String state=intent.getStringExtra(TelephonyManager.EXTRA_STATE);

    if(state==null)
    {
        //Outgoing call
        String number=intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
        Log.i("tag","Outgoing number : "+number);
    }
    else if (state.equals(TelephonyManager.EXTRA_STATE_RINGING))
    {
        //Incoming call
        String number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
        Log.i("tag","Incoming number : "+number);
    }
}