title: android : how to add image from gallery and delete image with a Button
body: <p>i want to load image that taken from galllery and camera, when user click on capture button, image will be capture from camera phone device, when user click on add_gallery button, image will be taken from gallery, my problem is when i choose an image from gallery, it is not display on my activity (on My ImageView named by foto_dp).
  this is my code : </p>
  
  <pre><code>    @Override
  public void onClick(View arg0) {
      switch (arg0.getId()){
  
      break;
      case R.id.capture_dp:
          final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
          intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
          startActivityForResult(intent, TAKE_PHOTO_CODE);
      break;
      case R.id.add_galery_dp:
          Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
          i.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());  
                  startActivityForResult(i, PICK_FROM_GALLERY);
      break;
      case R.id.delete_image_dp:
  
      break;
  }
  
  public Uri setImageUri() {
      // Store image in dcim
      File file = new File(Environment.getExternalStorageDirectory() +"/android/data/spaj_foto/spaj_foto("+counter+").png");
      Uri imgUri = Uri.fromFile(file);
      this.imgPath = file.getAbsolutePath();
      return imgUri;
  }
   public String getImagePath() {
          return imgPath;
      }
  
      @Override
      public void onActivityResult(int requestCode, int resultCode, Intent data) {  
           if (resultCode != Activity.RESULT_CANCELED) {
                      if (requestCode == TAKE_PHOTO_CODE) {
                      selectedImagePath = getImagePath();
                      foto_dp.setImageBitmap(decodeFile(selectedImagePath));
  
                      if (requestCode == PICK_FROM_GALLERY) {
                          selectedImagePath = getImagePath();
                          foto_dp.setImageBitmap(decodeFile(selectedImagePath));
                      }
                  } else {
                      super.onActivityResult(requestCode, resultCode, data);
                  }
           }
      }
       public Bitmap decodeFile(String path) {
              try {
                  // Decode image size
                  BitmapFactory.Options o = new BitmapFactory.Options();
                  o.inJustDecodeBounds = true;
                  BitmapFactory.decodeFile(path, o);
                  // The new size we want to scale to
                  final int REQUIRED_SIZE = 70;
  
                  // Find the correct scale value. It should be the power of 2.
                  int scale = 1;
                  while (o.outWidth / scale / 2 &gt;= REQUIRED_SIZE &amp;&amp; o.outHeight / scale / 2 &gt;= REQUIRED_SIZE)
                      scale *= 2;
  
                  // Decode with inSampleSize
                  BitmapFactory.Options o2 = new BitmapFactory.Options();
                  o2.inSampleSize = scale;
                  return BitmapFactory.decodeFile(path, o2);
              } catch (Throwable e) {
                  e.printStackTrace();
              }
              return null;
  
          }   
  </code></pre>
  
  <p>is there anywrong with my code? and how to delete image with a button on my activity? i hope someone can help me to solve my problem, thank you</p>