在Android Fragment中刷新刷新布局

我试图在片段上实现SwipeRefreshLayout。

我已经解决了它在一个Activity上实现它,但是当我在Fragment上实现它:java.lang.NoClassDefFoundError:com …

有没有人有一个想法? 谢谢!

类似的post没有答案/解决scheme: 刷新刷新布局 – 找不到类

我的代码:

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; } } 

而我的布局:

 <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> 

全堆栈跟踪

 08-13 11:36:19.292: E/AndroidRuntime(31572): FATAL EXCEPTION: main 08-13 11:36:19.292: E/AndroidRuntime(31572): Process: com.xxx.xx, PID: 31572 08-13 11:36:19.292: E/AndroidRuntime(31572): java.lang.NoClassDefFoundError: com.xxx.fragments.Principal 08-13 11:36:19.292: E/AndroidRuntime(31572): at com.xxx.hem.activities.MainActivity.CargarPrincipal(MainActivity.java:676) 08-13 11:36:19.292: E/AndroidRuntime(31572): at com.xxx.hem.activities.MainActivity.onCreate(MainActivity.java:297) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.Activity.performCreate(Activity.java:5231) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.ActivityThread.access$800(ActivityThread.java:135) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.os.Handler.dispatchMessage(Handler.java:102) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.os.Looper.loop(Looper.java:136) 08-13 11:36:19.292: E/AndroidRuntime(31572): at android.app.ActivityThread.main(ActivityThread.java:5001) 08-13 11:36:19.292: E/AndroidRuntime(31572): at java.lang.reflect.Method.invoke(Native Method) 08-13 11:36:19.292: E/AndroidRuntime(31572): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) 08-13 11:36:19.292: E/AndroidRuntime(31572): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) 

Solutions Collecting From Web of "在Android Fragment中刷新刷新布局"

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> 

我的片段

 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(); } 

把你的swipeLayout初始化在onViewCreated(View视图,Bundle bundle)而不是onCreateView(LayoutInflater inflater,ViewGroup容器,Bundle savedInstanceState)

 @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); }