android – 如何将listView标头添加为自定义布局

概述我想在listView中添加标题我尝试这样我在这里缺少的ids很好. 我在片段中使用它. ListView lv;LinearLayout header = (LinearLayout) rootView.findViewById(R.id.header_layout);lv.addHeaderView(header);// APP is crashing here? logcat的 j 我想在ListVIEw中添加标题我尝试这样我在这里缺少的IDs很好.
我在片段中使用它.

ListVIEw lv;linearLayout header = (linearLayout) rootVIEw.findVIEwByID(R.ID.header_layout);lv.addheaderVIEw(header);// APP is crashing here?

logcat的

java.lang.classCastException: androID.Widget.AbsListVIEw$LayoutParams cannot be cast to androID.Widget.relativeLayout$LayoutParams            at androID.Widget.relativeLayout$DependencyGraph.findRoots(relativeLayout.java:1732)            at androID.Widget.relativeLayout$DependencyGraph.getSortedVIEws(relativeLayout.java:1677)            at androID.Widget.relativeLayout.sortChildren(relativeLayout.java:381)            at androID.Widget.relativeLayout.onMeasure(relativeLayout.java:389)            at androID.vIEw.VIEw.measure(VIEw.java:17547)            at androID.vIEw.VIEwGroup.measureChilDWithmargins(VIEwGroup.java:5535)            at androID.Widget.linearLayout.measureChildBeforeLayout(linearLayout.java:1436)            at androID.Widget.linearLayout.measureVertical(linearLayout.java:722)            at androID.Widget.linearLayout.onMeasure(linearLayout.java:613)            at androID.vIEw.VIEw.measure(VIEw.java:17547)            at androID.vIEw.VIEwGroup.measureChilDWithmargins(VIEwGroup.java:5535)            at androID.Widget.FrameLayout.onMeasure(FrameLayout.java:436)            at androID.vIEw.VIEw.measure(VIEw.java:17547)

解决方法 我们可以向ListVIEw添加标题,如下所示：

LayoutInflater myinflater = getLayoutInflater();VIEwGroup myheader = (VIEwGroup)myinflater.inflate(R.layout.headerlayout,myListVIEw,false);myListVIEw.addheaderVIEw(myheader,null,false);

但是,根据您的错误,您可能已经在xml和java文件中使用了相对布局,您正在使用linearLayout.

您还必须将ListVIEw初始化为：

lv=(ListVIEw)findVIEwByID(R.ID.yourListvIEw);`

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