4
我想聽取片段的文字在我的搜索查看變化,但在這條線失敗:menu.findItem(R.id.action_search);
在片段(程序兼容性)不能施放搜索查看
例外:
java.lang.ClassCastException: android.support.v7.internal.view.menu.MenuItemWrapperJB cannot be cast to android.support.v7.widget.SearchView
at se.xxx.xxx.FragmentList.onCreateOptionsMenu(FragmentList.java:155)
我onCreateOptionsMenu(在片段):
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.main, menu);
SearchView sv = (SearchView) menu.findItem(R.id.action_search); //crashes here
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
return false;
}
@Override
public boolean onQueryTextChange(String s) {
adapter.getFilter().filter(s.toString());
return false;
}
});
}
菜單佈局XML(main.xml中):
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="se.xxx.xxx.MainActivity" >
<item
app:actionViewClass="android.support.v7.widget.SearchView"
android:id="@+id/action_search"
android:icon="@android:drawable/ic_menu_search"
android:title="blabla"
app:showAsAction="always"
/>
在片段類確保您已導入'android.support.v7.widget'包? –
android.support.v7.widget.SearchView導入 –