在Android片段中滑动刷新布局
我试图在一个片段上实现SwipeRefreshLayout 我已经解决了它,以便在一个活动上实现它,但是当我在Fragment:java.lang.NoClassDefFoundError:com上实现它时 有人有主意吗?谢谢 没有答案/解决方案的类似帖子: 我的代码:在Android片段中滑动刷新布局,android,android-fragments,noclassdeffounderror,Android,Android Fragments,Noclassdeffounderror,我试图在一个片段上实现SwipeRefreshLayout 我已经解决了它,以便在一个活动上实现它,但是当我在Fragment:java.lang.NoClassDefFoundError:com上实现它时 有人有主意吗?谢谢 没有答案/解决方案的类似帖子: 我的代码: public class Principal extends Fragment implements OnRefreshListener { SwipeRefreshLayout swipeLayout; @O
public class Principal extends Fragment implements OnRefreshListener {
SwipeRefreshLayout swipeLayout;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.principal, container, false);
swipeLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container);
swipeLayout.setOnRefreshListener(this);
swipeLayout.setColorScheme(android.R.color.holo_blue_bright,
android.R.color.holo_green_light,
android.R.color.holo_orange_light,
android.R.color.holo_red_light);
return view;
}
}
和我的布局:
<android.support.v4.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/swipe_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.enhancedListView.EnhancedListView
android:id="@+id/listaNoticias"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="6dp"
android:layout_marginRight="6dp"
android:layout_marginTop="5dp" >
</com.enhancedListView.EnhancedListView>
</android.support.v4.widget.SwipeRefreshLayout>
将您的swipeLayout初始化放在onViewCreated(视图,捆绑包)中,而不是onCreateView(布局、充气机、视图组容器、捆绑包保存状态) 解决了:) 我的XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/swipe_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.enhancedListView.EnhancedListView
android:id="@+id/listaNoticias"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="6dp"
android:layout_marginRight="6dp"
android:layout_marginTop="5dp" >
</com.enhancedListView.EnhancedListView>
</android.support.v4.widget.SwipeRefreshLayout>
只需确保将刷卡刷新布局的代码放在
override-fun-onViewCreated(view:view,savedInstanceState:Bundle?{}
中,而不是onCreateView
是的,错误是“java.lang.NoClassDefFoundError:com…”。。;我非常想看到错误的其余部分。@StephaneMathis用完整堆栈跟踪更新,那么在MainActivity的第676行是什么?@StephaneMathis Principal h=new Principal();getSupportFragmentManager().beginTransaction().replace(R.id.content_frame,h.commit()@user3931604删除最后一行返回视图;因为onViewCreate()不应该返回任何内容;我的任务是什么@纳乔_zona3@AovinMahmud不知道是否太晚,但MyTask是BaseAyncTask,您将执行(基本上是一个线程),您必须调用swipeLayout.setRefreshing(false);在onRefresh()方法中,否则它将连续显示刷新指示器。
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
swipeLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container);
swipeLayout.setOnRefreshListener(this);
swipeLayout.setColorScheme(android.R.color.holo_blue_bright,
android.R.color.holo_green_light,
android.R.color.holo_orange_light,
android.R.color.holo_red_light);
}
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/swipe_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.enhancedListView.EnhancedListView
android:id="@+id/listaNoticias"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="6dp"
android:layout_marginRight="6dp"
android:layout_marginTop="5dp" >
</com.enhancedListView.EnhancedListView>
</android.support.v4.widget.SwipeRefreshLayout>
public class Principal extends Fragment implements OnRefreshListener {
SwipeRefreshLayout swipeLayout;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.principal, container, false);
swipeLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container);
swipeLayout.setOnRefreshListener(this);
swipeLayout.setColorSchemeColors(android.R.color.holo_green_dark,
android.R.color.holo_red_dark,
android.R.color.holo_blue_dark,
android.R.color.holo_orange_dark); (...)
@Override
public void onRefresh() {
new myTask().execute();
}