Comment imprimer une image dans une nouvelle mise en page

Question

J'ai essayé d'imprimer une image dans une nouvelle mise en page mais cela ne fonctionne pas Quelqu'un peut-il m'aider?

ici le code:

dans MainActivity:

case R.id.gallery: //in the moment that the user pressed the button pickAPic, the app will give him to choose a picture 
       startActivity(new Intent(MainActivity.this, Main2Activity.class)); 

       Intent pickImageIntent = new Intent(Intent.ACTION_PICK, 
         android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); //the app ask access for the gallery 
       startActivityForResult(pickImageIntent, REQUEST_PICK_PIC); // when he press on a pic 
       break; 

dans main2activity:

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

    switch (requestCode) { 
     case REQUEST_PICK_PIC: 
      if (resultCode == RESULT_OK) { 
       Uri imageUri = intent.getData(); 
       Bitmap bitmap; 
       try { 

        bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), imageUri); 
        iv.setImageBitmap(bitmap); // the app "prints" the image that the user choose 
       } catch (FileNotFoundException e) { 
        e.printStackTrace(); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } 
      } 
      break; 

    } 
} 

alors quel est mon problème?

vous remercie pour l'aide

Answer 1

Vous devez commencer votre main2activity gérer après la onActivityResult de votre MainActivity comme:

MainActivity:

case R.id.gallery: //in the moment that the user pressed the button pickAPic, the app will give him to choose a picture 

    Intent pickImageIntent = new Intent(Intent.ACTION_PICK, 
    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); //the app ask access for the gallery 
    startActivityForResult(pickImageIntent, REQUEST_PICK_PIC); // when he press on a pic 
    break; 

... 

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

    switch (requestCode) { 
     case REQUEST_PICK_PIC: 
      if (resultCode == RESULT_OK) { 
       Uri imageUri = intent.getData(); 
       Intent intent = new Intent(MainActivity.this, Main2Activity.class); 
       intent.putExtra("IMAGE_URI", uri.toString()); 
       startActivity(intent); 
       } 
      break; 

    } 
} 

dans main2activity:

@Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      ... 
      Uri uri = Uri.parse(getIntent().getStringExtra("IMAGE_URI")); 
      Bitmap bitmap; 
       try { 

        bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri); 
        iv.setImageBitmap(bitmap); // the app "prints" the image that the user choose 
       } catch (FileNotFoundException e) { 
        e.printStackTrace(); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } 
    }