Android bitmap to jpeg (canvas)

Programming/Android

Android bitmap to jpeg (canvas)

생각하는로뎅 2013. 4. 23. 19:17

public class MainActivity extends Activity {

ImageView image;

@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));

}

@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

private static class SampleView extends View {

// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

}

@Override
		protected void onDraw(Canvas canvas) {
			Paint paint = new Paint();

canvas.drawColor(Color.GRAY);

// you need to insert some image flower_blue into res/drawable
			// folder
			Bitmap b = BitmapFactory.decodeResource(getResources(),
					R.drawable.capture);
			
			// Best of quality is 80 and more, 3 is very low quality of image
			Bitmap bJPGcompress = codec(b, Bitmap.CompressFormat.JPEG, 3);
			
			// get dimension of bitmap getHeight() getWidth()
			int h = b.getHeight();

canvas.drawBitmap(b, 10, 10, paint);
			canvas.drawBitmap(bJPGcompress, 10, 10 + h + 10, paint);

}

private Bitmap codec(Bitmap src, Bitmap.CompressFormat format,
				int quality) {

ByteArrayOutputStream os = new ByteArrayOutputStream();
			src.compress(format, quality, os);

byte[] array = os.toByteArray();
			return BitmapFactory.decodeByteArray(array, 0, array.length);
		}
	}

}