裁剪圆形图片

/**
* 显示圆形图片 Glide
* @author ad
*
*/
public class GlideCircleTransform extends BitmapTransformation {

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

protected Bitmap transform(BitmapPool pool, Bitmap toTransform,
int outWidth, int outHeight) {
return circleCrop(pool, toTransform);
}

private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
if (source == null)
return null;
int size = Math.min(source.getWidth(), source.getHeight());
int x = (source.getWidth() - size) / 2;
int y = (source.getHeight() - size) / 2;
Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);
Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP,
BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
float r = size / 2f;
canvas.drawCircle(r, r, r, paint);
return result;
}

@Override
public String getId() {
return getClass().getName();
}
}

使用Glide加载

if (outputImageIcon.exists()) {
String imgStr = Environment.getExternalStorageDirectory() + "/Tangcan/tempImageIcon.jpg";
Glide.with(getMyActivity()).load(imgStr).centerCrop().transform(new GlideCircleTransform(getMyActivity())).into(mIcon);
// mIcon.setImageBitmap(GetCircleImage.toRoundBitmap(BitmapFactory.decodeFile(Environment.getExternalStorageDirectory() + "/Tangcan/tempImageIcon.jpg")));
}