Android(安卓)实现控件浮动效果
16lz
2021-12-04
public class CustomScrollView extends ScrollView {public CustomScrollView(Context context) {super(context);// TODO Auto-generated constructor stub}public CustomScrollView(Context context, AttributeSet attrs) {super(context, attrs);// TODO Auto-generated constructor stub}private toShowInterface callback;public interface toShowInterface {void toShow(int t);};public void setCallback(toShowInterface callback) {this.callback = callback;}@Overrideprotected void onScrollChanged(int l, int t, int oldl, int oldt) {// TODO Auto-generated method stubsuper.onScrollChanged(l, t, oldl, oldt);callback.toShow(t);}}
回调
@Overridepublic void toShow(int t) {// LogUtil.log("toShow=" + t + "/topImg=" + topImg.getHeight());if (topImg.getHeight() <= t ) {labelCheckView2.setVisibility(View.VISIBLE);} else {labelCheckView2.setVisibility(View.GONE);}}
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