我在 android 中創建了一個包含 2 個函數的片段，在調用片段時在開始時調用 startview()，然后當用戶單擊按鈕時調用 childfragment()。那時它應該從 startview() 中刪除視圖，然后用 childfragment() 中的 newview 替換它，這就是我認為它會做的。但是它并沒有刪除舊視圖并將新視圖放在舊視圖之上。甚至認為我已經放置 mContainer.removeAllViews();它并沒有刪除舊視圖。我錯過了什么？請幫忙。這是代碼@SuppressLint("ValidFragment")public class FragmentSideContent extends android.app.Fragment { //private OnFragmentInteractionListener mListener; Context context; View view,trueview; ListView listView; ListAdapter listAdapter; private LayoutInflater mInflater; private ViewGroup mContainer; int[] image = {1,2,3}; String[] titleText = {"one","two","three","one","two","three","one","two","three","one","two","three"}; String[] subTitleText = {"one","two","three","one","two","three","one","two","three","one","two","three"}; public FragmentSideContent(Context context) { this.context = context; } @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,@Nullable Bundle savedInstanceState) { mInflater = inflater; mContainer = container; startview(); return trueview; } public void startview(){ view = mInflater.inflate(R.layout.fragment_sidecontent,mContainer,false); listView = (ListView) view.findViewById(R.id.noteList); listAdapter = new ListAdapter(context,image,titleText,subTitleText); listView.setAdapter(listAdapter); trueview = view; } public void childfragment(){ mContainer.removeAllViews(); View newview = mInflater.inflate(R.layout.fragment_sidecontent,mContainer,false); Fragment childFragment = new FragmentList(context); FragmentTransaction transaction = getChildFragmentManager().beginTransaction(); transaction.replace(R.id.child_fragment_container, childFragment).commit(); mContainer.addView(newview); mContainer.addView(trueview); trueview = newview; }}
1 回答
函數式編程
TA貢獻1807條經驗 獲得超9個贊
我建議你在你的片段布局中加入一些 GroupView 來做到這一點。
fragment_layout.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
在你的 Fragment.java 中
View view;
Framelayout fContainer;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_layout, container, false);
return startView();
}
public View startview(){
fContainer = (Framelayout) view.findViewById(R.id.container);
listView = (ListView) view.findViewById(R.id.noteList);
listAdapter = new ListAdapter(context,image,titleText,subTitleText);
listView.setAdapter(listAdapter);
return view;
}
public void childfragment(){
fContainer.removeAllViews();
Fragment childFragment = new FragmentList(context);
FragmentTransaction transaction =
getChildFragmentManager().beginTransaction();
transaction.replace(R.id.container, childFragment).commit();
}
現在在另一個片段 (FragmentList) 的 oncreateview 中放置您想要膨脹的視圖。
片段列表.java
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View newview = mInflater.inflate(R.layout.fragment_sidecontent,mContainer,false);
return newview;
}
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