OwnCustomView.java 文件源码

@Override
protected void onDraw(Canvas canvas) {
    if (firstDraw) {
        LinearGradient lg = new LinearGradient(0, 0, getWidth(), getHeight(),
                colorArray, null, Shader.TileMode.CLAMP);

        backgroundPaint.setShader(lg);
        firstDraw = false;
    }

    canvas.drawRect(0, 0, getWidth(), getHeight(), backgroundPaint);
    super.onDraw(canvas);
}