如何将listView标头添加为自定义布局
问题描述:
我想在listView中添加标头,我尝试像这样我在这里缺少的ID很好. 我正在片段中使用它.
I want to add header in listView i try like this what i am missing here ids are fine. I am using this in fragment.
ListView lv;
LinearLayout header = (LinearLayout) rootView.findViewById(R.id.header_layout);
lv.addHeaderView(header);
// APP is crashing here?
Logcat
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)
答
我们可以将标头添加到ListView,如下所示:
We Can add header to ListView as below :
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,您可能已在XML和Java文件中采用了相对布局,而您正在使用LinearLayout.
But, As per your error you might have taken Relative Layout in your xml and in your java file, You are using LinearLayout.
您还必须将ListView初始化为:
You also have to initialize your ListView as :
lv=(ListView)findViewById(R.id.yourlistview);`