TextView的折叠和扩展,可以设置默认行数

 
 
TextVIew.getLineHeight();
 
 
TextView.getLineCount();
 
 
private voiddoAnimation(intstartHeight,intendHeight) {
 
 
ValueAnimator animator = ValueAnimator.ofInt(startHeight, endHeight);
 
 
animator.setDuration(600);
 
 
animator.setTarget(mDescribeDetailTv);
 
 
animator.addUpdateListener(newValueAnimator.AnimatorUpdateListener() {
 
 
@Override
 
 
public voidonAnimationUpdate(ValueAnimator animation) {
 
 
intheight = (int) animation.getAnimatedValue();
 
 
ViewGroup.LayoutParams params =mDescribeDetailTv.getLayoutParams();
 
 
params.height= height;
 
 
mDescribeDetailTv.setLayoutParams(params);
 
 
}
 
 
});
 
 
animator.start();
 
 
}