Android自定义View之继承TextView绘制背景
时间：2021-06-11 08:07:26 | 栏目：Android代码 | 点击：次
本文实例为大家分享了TextView绘制背景的方法，供大家参考，具体内容如下
效果：
实现流程：
1.初始化：对画笔进行设置
mPaintIn = new Paint(); mPaintIn.setAntiAlias(true); mPaintIn.setDither(true); mPaintIn.setStyle(Paint.Style.FILL); mPaintIn.setColor(getResources().getColor(R.color.colorPrimary)); mPaintOut = new Paint(); mPaintOut.setAntiAlias(true); mPaintOut.setDither(true); mPaintOut.setStyle(Paint.Style.FILL); mPaintOut.setColor(getResources().getColor(R.color.colorAccent));
2.绘制外框，内框，文字
获取组件宽高
int width = getMeasureWidth(); int height = getMeasureHeight();
绘制
@Override
protected void onDraw(Canvas canvas) {
//绘制背景,在绘制文字之前绘制
canvas.drawRect(new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()), mPaintIn);
canvas.drawRect(new Rect(10, 10, getMeasuredWidth()-10, getMeasuredHeight()-10), mPaintOut);
super.onDraw(canvas);
}