如何将listView标头添加为自定义布局 [英] How add listView header as a custom layout

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)

推荐答案

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);`

这篇关于如何将listView标头添加为自定义布局的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！