小编Nir*_*ngh的帖子

在我的应用程序中,我使用Android设备相机捕获我的图像.在某些设备上它工作正常,但不是全部,我只是测试了LG nexus 5 E960,在我捕获图像后它总是结束崩溃而无法保存结果这是我的代码:

  Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
  startActivityForResult(cameraIntent, 1);



  protected void onActivityResult(int requestCode, int resultCode,
        Intent returnimage) {
    super.onActivityResult(requestCode, resultCode, returnimage);

    switch (requestCode) {
    case 1:
        if (resultCode == RESULT_OK) {

            Uri selectedImage = returnimage.getData();

            String stringUri;
            stringUri = selectedImage.toString();
            Intent i1 = new Intent(MainActivity.this, Secondpage.class);
             i1.putExtra("Stringuri",stringUri );
            startActivity(i1);


        }
        break;

我的logcat是:

     java.lang.RuntimeException: Failure delivering result ResultInfo{who=null,
     request=1, result=-1, data=Intent { act=inline-data (has extras) }} to activity 
     {com.photostikers/com.photostikers.MainActivity}: java.lang.NullPointerException
     02-13 12:27:54.315: E/AndroidRuntime(28759):  at 
     android.app.ActivityThread.deliverResults(ActivityThread.java:3365)
     02-13 12:27:54.315: E/AndroidRuntime(28759):  at …

我试图在来电屏幕上添加弹出窗口作为真正的调用者但无法实现.我知道这背后的逻辑是什么以及我如何实现这一点

  public void onReceive(Context context, Intent intent) {

    try {
        // TELEPHONY MANAGER class object to register one listner
        TelephonyManager tmgr = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);


            }
    } catch (Exception e) {
        Log.e("Phone Receive Error", " " + e);
    }

}