CustomView.java 文件源码

@Override
public void onClick(final View v) {
    switch (new Random().nextInt(5)) {
        case 0:
            mPaint.setShader(sweepGradient);
            break;
        case 1:
            mPaint.setShader(linearGradient);
            break;
        case 2:
            mPaint.setShader(radialGradient);
            break;
        case 3:
            mPaint.setShader(bitmapShader1);
            break;
        case 4:
            final Shader composeShader = new ComposeShader(bitmapShader1,
                    new BitmapShader(BitmapFactory.decodeResource(getResources(), R.drawable.ic_msg_unread),
                            Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)
                    , intToMode(new Random().nextInt(16)));
            mPaint.setShader(composeShader);
            break;
    }
    invalidate();
}