Foto w/ Kamera-Vorsatz und Anzeige in der Bildansicht oder textView?

Die Methode, die ich gefunden, um einfach und hilfreich ist dies:

MainActivity

private static String root = null;
private static String imageFolderPath = null;        
private String imageName = null;
private static Uri fileUri = null;
private static final int CAMERA_IMAGE_REQUEST=1;

public void captureImage(View view) {

    ImageView imageView = (ImageView) findViewById(R.id.capturedImageview);

             //fetching the root directory
     root = Environment.getExternalStorageDirectory().toString()
     + "/Your_Folder";

     //Creating folders for Image
     imageFolderPath = root + "/saved_images";
     File imagesFolder = new File(imageFolderPath);
     imagesFolder.mkdirs();

    //Generating file name
    imageName = "test.png";

    //Creating image here

    File image = new File(imageFolderPath, imageName);

    fileUri = Uri.fromFile(image);

    imageView.setTag(imageFolderPath + File.separator + imageName);

    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);

    startActivityForResult(takePictureIntent,
            CAMERA_IMAGE_REQUEST);

}

und dann in Ihrer Aktivität onActivityResult Methode:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    //TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == RESULT_OK) {

        switch (requestCode) {
        case CAMERA_IMAGE_REQUEST:

            Bitmap bitmap = null;
            try {
                GetImageThumbnail getImageThumbnail = new GetImageThumbnail();
                bitmap = getImageThumbnail.getThumbnail(fileUri, this);
            } catch (FileNotFoundException e1) {
                //TODO Auto-generated catch block
                e1.printStackTrace();
            } catch (IOException e1) {
                //TODO Auto-generated catch block
                e1.printStackTrace();
            }

            //Setting image image icon on the imageview

            ImageView imageView = (ImageView) this
                    .findViewById(R.id.capturedImageview);

            imageView.setImageBitmap(bitmap);

            break;

        default:
            Toast.makeText(this, "Something went wrong...",
                    Toast.LENGTH_SHORT).show();
            break;
        }

    }
}

GetImageThumbnail.java

public class GetImageThumbnail {

private static int getPowerOfTwoForSampleRatio(double ratio) {
    int k = Integer.highestOneBit((int) Math.floor(ratio));
    if (k == 0)
        return 1;
    else
        return k;
}

public Bitmap getThumbnail(Uri uri, Context context)
        throws FileNotFoundException, IOException {
    InputStream input = context.getContentResolver().openInputStream(uri);

    BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
    onlyBoundsOptions.inJustDecodeBounds = true;
    onlyBoundsOptions.inDither = true;//optional
    onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
    BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
    input.close();
    if ((onlyBoundsOptions.outWidth == -1)
            || (onlyBoundsOptions.outHeight == -1))
        return null;

    int originalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight
            : onlyBoundsOptions.outWidth;

    double ratio = (originalSize > 400) ? (originalSize / 350) : 1.0;

    BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
    bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio);
    bitmapOptions.inDither = true;//optional
    bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
    input = context.getContentResolver().openInputStream(uri);
    Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
    input.close();
    return bitmap;
}
}

und dann auf die Bildansicht onclick Methode wird so sein:

public void showFullImage(View view) {
    String path = (String) view.getTag();

    if (path != null) {

        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        Uri imgUri = Uri.parse("file://" + path);
        intent.setDataAndType(imgUri, "image/*");
        startActivity(intent);

    }

}