2012-12-05 23 views
1

我创建与json的Rss,当我从后台获取jsonObject时,在postExecute中创建带有对象结果的Map,然后我有一个错误 LogCat在SimpleAdapter中导致错误WebView为什么没有人可以帮忙?在SimpleAdapter中的WebView

logcat的

12-05 17:55:35.597: E/AndroidRuntime(22543): FATAL EXCEPTION: main 
    12-05 17:55:35.597: E/AndroidRuntime(22543): java.lang.IllegalStateException: android.webkit.WebView is not a view that can be bounds by this SimpleAdapter 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.SimpleAdapter.bindView(SimpleAdapter.java:195) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.SimpleAdapter.createViewFromResource(SimpleAdapter.java:126) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.SimpleAdapter.getView(SimpleAdapter.java:114) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.AbsListView.obtainView(AbsListView.java:2161) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.ListView.makeAndAddView(ListView.java:1831) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.ListView.fillDown(ListView.java:674) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.ListView.fillFromTop(ListView.java:735) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.ListView.layoutChildren(ListView.java:1652) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.AbsListView.onLayout(AbsListView.java:1996) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.View.layout(View.java:14003) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewGroup.layout(ViewGroup.java:4375) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.View.layout(View.java:14003) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewGroup.layout(ViewGroup.java:4375) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.View.layout(View.java:14003) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewGroup.layout(ViewGroup.java:4375) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.View.layout(View.java:14003) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewGroup.layout(ViewGroup.java:4375) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.View.layout(View.java:14003) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewGroup.layout(ViewGroup.java:4375) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1711) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.Choreographer.doFrame(Choreographer.java:532) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.os.Handler.handleCallback(Handler.java:725) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.os.Handler.dispatchMessage(Handler.java:92) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.os.Looper.loop(Looper.java:137) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at android.app.ActivityThread.main(ActivityThread.java:5238) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at java.lang.reflect.Method.invokeNative(Native Method) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at java.lang.reflect.Method.invoke(Method.java:511) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:799) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:566) 
    12-05 17:55:35.597: E/AndroidRuntime(22543): at dalvik.system.NativeStart.main(Native Method) 

源码

protected void onPostExecute(JSONObject result) { 
     super.onPostExecute(result); 
     if(result != null){ 

     JSONObject jsn = result; 
     try { 
     JSONArray jarray = jsn.getJSONArray("item"); 
     for (int i = 0; i < jarray.length(); i++){ 
      JSONObject jsno = jarray.getJSONObject(i); 
      Log.d("Log", jsno.getString("title")); 
      rssMap = new HashMap<String, Object>(); 
      rssMap.put(TITLE, jsno.getString("title")); 
      rssMap.put(CATEGORY, jsno.getString("category")); 
      rssMap.put(DATE, jsno.getString("pubDate")); 
      rssMap.put(DESCRIPTION, jsno.getString("description"));// This for webView, it's html code! 
      rssView.add(rssMap); 
     } 
     SimpleAdapter adapter = new SimpleAdapter(
       getApplicationContext(), rssView, R.layout.item, 
       new String[] {TITLE, CATEGORY, DATE, DESCRIPTION}, 
       new int[] {R.id.title, R.id.cat, R.id.date, R.id.desc} 
       ); 
     list.setAdapter(adapter); 
     } 
     catch (JSONException e) {  
      e.printStackTrace();} 
     } 
     else{ 
      /* 
      * Тут мне нужен AlertDialog с оповещанием что нету подключения к сети! 
      * */ 
      showDialog(errorShow);  
     } 

    } 

} 

item.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/title" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Заголовок" 
     android:textColor="#33b5e5" 
     android:textSize="23sp" /> 

    <TextView 
     android:id="@+id/date" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="05.12.2012" 
     android:textColor="#969696" 
     android:textSize="14sp" /> 

    <TextView 
     android:id="@+id/cat" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Категория" 
     android:textColor="#969696" 
     android:textSize="14sp" /> 

    <WebView 
     android:id="@+id/desc" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 

</LinearLayout> 

回答

3

为SIMPL的Android文档eAdapter指出:

将数据绑定到视图分两个阶段进行。 首先,如果SimpleAdapter.ViewBinder可用,则调用setViewValue(android.view.View, Object, String)。如果返回值为true,则发生绑定。如果返回的值是假,以下视图然后试图在顺序:

  • 实现可检查(例如CheckBox)的图。期望的绑定值是一个布尔值。
  • TextView。期望的绑定值是一个字符串,并且调用setViewText(TextView, String)
  • ImageView。期望的绑定值是一个资源ID或一个字符串,调用setViewImage(ImageView, int)setViewImage(ImageView, String)

如果找不到合适的绑定,则会抛出IllegalStateException。

该适配器无法将您的jsno.getString("description")(这是一个String)转换为一个URL本身。您可以尝试转换String,然后将其作为URL对象rssMap,但是,我建议您在绑定过程中实现自己的自定义Adapter并覆盖getView()方法以设置WebView的URL。