Android get only image from gallery
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Intent intent = new Intent();
    intent.setType("image/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);


    if (resultCode == RESULT_OK) {


    switch(requestCode){

         case SELECT_PICTURE:
              Uri selectedImageUri = data.getData();


          break;
        }
      }

....
    Intent intent = new Intent(Intent.ACTION_PICK);
    intent.setType("image/*");
    startActivityForResult(intent, SELECT_PICTURE);
....

Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);

startActivityForResult(intent, SELECT_PICTURE);

public void ChoosePicture(View v) {
    Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
    photoPickerIntent.setType("image/*");
    startActivityForResult(photoPickerIntent, 1);
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case 1:
     {
      if (resultCode == RESULT_OK)
      {
        Uri photoUri = data.getData();
        if (photoUri != null)
        {
        try {
              String[] filePathColumn = {MediaStore.Images.Media.DATA};
              Cursor cursor = getContentResolver().query(photoUri, filePathColumn, null, null, null);
              cursor.moveToFirst();
              int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
              String filePath = cursor.getString(columnIndex);
              cursor.close();
              bMap_image = BitmapFactory.decodeFile(filePath);
              ImageView img = (ImageView) findViewById(R.id.gallery1);
              img.setImageBitmap(bMap_image);


     }catch(Exception e)
      {}
      }
    }// resultCode
    }// case 1
    }// switch, request code
}// public void onActivityResult