Circle mask NetworkImageView for Volley

CircleNetworkImageView.java

/* The MIT License (MIT)

Copyright (c) 2014, Marty Glaubitz

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.util.AttributeSet;

import com.android.volley.toolbox.NetworkImageView;

public class CircleNetworkImageView extends NetworkImageView {

	private Paint	_Paint;
	private RectF	_RectF;

	public CircleNetworkImageView(Context context) {
		super(context);
	}

	public CircleNetworkImageView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public CircleNetworkImageView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	public void setImageBitmap(Bitmap bitmap) {
		if (bitmap == null) {
			_Paint = null;

			super.setImageBitmap(bitmap);
			return;
		}


		final int paddingLeft = getPaddingLeft();
		final int paddingTop = getPaddingTop();

		final int imageWidth = canvas.getWidth() - paddingLeft * 2;
		final int imageHeight = canvas.getHeight() - paddingTop * 2;

		_RectF.set(0.0f, 0.0f, imageWidth, imageHeight);
		_RectF.offset(paddingLeft, paddingTop);

		final int radiusX = imageWidth  / 2;
		final int radiusY = imageHeight / 2;

		canvas.drawRoundRect(_RectF, radiusX, radiusY, _Paint);
	}

	@Override
	protected void onDraw(Canvas canvas) {
		if (_Paint == null) {
			super.onDraw(canvas);
			return;
		}

		_RectF.set(0.0f, 0.0f, canvas.getWidth(), canvas.getHeight());

		final int radiusX = canvas.getWidth() / 2;
		final int radiusY = canvas.getHeight() / 2;
		canvas.drawRoundRect(_RectF, radiusX, radiusY, _Paint);
	}
}

Can't resolve symbol "canvas" in

@Override
public void setImageBitmap(Bitmap bitmap) {
if (bitmap == null) {
_Paint = null;

super.setImageBitmap(bitmap);
return;
}


final int paddingLeft = getPaddingLeft();
final int paddingTop = getPaddingTop();

final int imageWidth = canvas.getWidth() - paddingLeft * 2;
final int imageHeight = canvas.getHeight() - paddingTop * 2;

_RectF.set(0.0f, 0.0f, imageWidth, imageHeight);
_RectF.offset(paddingLeft, paddingTop);

final int radiusX = imageWidth / 2;
final int radiusY = imageHeight / 2;

canvas.drawRoundRect(_RectF, radiusX, radiusY, _Paint);
}

In setImageBitmap, before using canvas, add this line:

Canvas canvas = new Canvas(bitmap);

I had problems getting this to work for me so using another post I made this class -- it seems to work pretty well: https://gist.github.com/bkurzius/99c945bd1bdcf6af8f99

Thanks, it is perfect.

bkurzius the solution you posted is bad organized.

martyglaubitz thank you for the Gist, but ...

When you created rectF and paint, you used the underscore method, it doesn't work properly

private Paint _Paint;
private RectF _RectF;

Whenever setImageBitmap is called, NullPointerException is thrown :

• java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.RectF.set(float, float, float, float)' on a null object reference
  • at com.matekap.mwc21.utils.CircleNetworkImageView.setImageBitmap(CircleNetworkImageView.java:61)

So it needed to be initialized somewhere :

private Paint paint = new Paint();
private RectF rectF = new RectF();

No errors but, it shows black rounded pictures, because of the paint default values.

Any solution !