Android ViewPager无法使用wrap_content属性自适应高度
使用ViewPager的时候发现一个问题,当设置ViewPager控件的height属性为wrap_content时,控件高度一直是0,无法正常显示,在网上找到了解决办法,重写ViewPager的onMesure()方法.
public class WrapContentHeightViewPager extends ViewPager {
/**
* Constructor
*
* @param context
* the context
*/
public WrapContentHeightViewPager(Context context) {
super(context);
}
/**
* Constructor
*
* @param context
* the context
* @param attrs
* the attribute set
*/
public WrapContentHeightViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = 0;
for (int i = 0; i < getChildCount(); i++) {
View child = getChildAt(i);
child.measure(widthMeasureSpec,
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
int h = child.getMeasuredHeight();
if (h > height)
height = h;
}
heightMeasureSpec = MeasureSpec.makeMeasureSpec(height,
MeasureSpec.EXACTLY);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}