TypedArray的用法

自定义view的属性方式如下：：：：

1. 在res/values 文件下定义一个attrs.xml 文件.

<resources>

<declare-styleable name="desktopmanager">

<attr name="windowwidth" format="dimension"/>

<attr name="windowheight" format="dimension"/>

<attr name="listwidth" format="dimension"/>

</declare-styleable>

</resources>

2. viewGroup1中自定义viewGroup2的大小

在viewGroup1中代码如下：

//使用“名字_属性"的方法获取

int mWindowHeight = (int) a.getDimension(R.styleable.desktopmanager_windowheight,
1000);

int mWindowWidth = (int) a.getDimension(R.styleable.desktopmanager_windowwidth, 1200);

//在viewGroup1中设置view的实际大小

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

int width = MeasureSpec.getSize(widthMeasureSpec);

int height = MeasureSpec.getSize(heightMeasureSpec);

//在viewGroup1中设置viewGroup2的大小

viewGroup2.measure(mWindowWidth | MeasureSpec.EXACTLY, mWindowHeight | MeasureSpec.EXACTLY);

this.setMeasuredDimension(width, height);

}