显示从相机捕获的图像或从图库视图中的另一个活动中选择的图像

Question

我有两个图像按钮，一个用于相机，另一个用于图库。我想用相机拍摄照片或从图库中选择照片，并且该图像必须显示在图像视图中的另一个活动上。我的代码不起作用。

的manifest.xml

<manifest ...
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 <uses-feature android:name="android.hardware.camera"></uses-feature>
</manifest>

第一项活动：

private static int REQUEST_CAMERA = 1;
private static int SELECT_FILE = 1;
String imagePath;
String filename;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ImageButton take_photo = (ImageButton) findViewById(R.id.cameraButton);
    ImageButton get_photo = (ImageButton) findViewById(R.id.galleryButton);
    take_photo.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, REQUEST_CAMERA);
        }
    });
    //to get the photo from gallery
    get_photo.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent i = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            startActivityForResult(i, SELECT_FILE);
        }
    });
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (resultCode == RESULT_OK) {
        if (requestCode == REQUEST_CAMERA) {

            Uri selectedImage = data.getData();
            String[] filePathColumn = {MediaStore.Images.Media.DATA};

            Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
            cursor.moveToFirst();

            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            //file path of captured image
            imagePath = cursor.getString(columnIndex);
            //file path of captured image
            File f = new File(imagePath);
             filename = f.getName();
            cursor.close();
            Bitmap imageData = BitmapFactory.decodeFile(imagePath);
            imageData = (Bitmap) data.getExtras().get("data");
            Intent i = new Intent(this, ShowPhotoActivity.class);
            i.putExtra("path", imagePath );
            startActivity(i);

        }
        else if (requestCode == SELECT_FILE) {
            //Bitmap photo = (Bitmap) data.getData().getPath();

            Uri selectedImageUri = data.getData();
            imagePath = selectedImageUri.getPath();
            Bitmap imageData = BitmapFactory.decodeFile(imagePath);
            imageData = (Bitmap) data.getExtras().get("data");
            Intent intent = new Intent(this, ShowPhotoActivity.class);
            intent.putExtra("name", imageData );
            startActivity(intent);
        } } }

}

SecondActivity：

       ImageView showPhoto = (ImageView) findViewById(R.id.imageView);
       image_path = getIntent().getStringExtra("path");
       Bitmap bitmap = BitmapFactory.decodeFile(image_path);
       showPhoto.setImageBitmap(bitmap);