在Android片段中滑动刷新布局

Im trying to implement SwipeRefreshLayout on a Fragment.

我试图在一个片段上实现SwipeRefreshLayout。

I already solved it to implement it on an Activity, but when I implement it on Fragment: java.lang.NoClassDefFoundError: com...

我已经解决了在活动上实现它，但是当我在Fragment: java.lang上实现它时。NoClassDefFoundError:com…

Does anyone has an idea? Thanks!

有人知道吗?谢谢!

Similar post without answers/solution: Swipe Refresh Layout - Class not found

类似的贴子没有答案/解决方案:刷卡刷新布局-没有找到类

My code:

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;
    }
}

And my layout:

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>

Full stack trace

完整的堆栈跟踪

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)

2 个解决方案

#1

Solved it :)

解决:)

My XML

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>

My Fragment

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();     
}

#2

Put your swipeLayout initialization in onViewCreated(View view, Bundle bundle) instead of onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)

将swipeLayout初始化放在onViewCreated(View View View View View, Bundle Bundle Bundle Bundle Bundle)中，而不是onCreateView(LayoutInflater, ViewGroup container, 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);
}

#1