Comment gonfler RelativeLayout à partir de XML

J'ai eu une tâche très spécifique à gonfler à vue. Pour être honnête, je n'ai pas vraiment comprendre ce que je dois faire exactement. La seule méthode, qui a compilé probperly était que

@Override
    public View getView(int position, View convertView, ViewGroup parent) {


        //TODO - Get the current ToDoItem
        final ToDoItem toDoItem =  mItems.get(position);

        //TODO - Inflate the View for this ToDoItem
        //from todo_item.xml.

          RelativeLayout itemLayout = (RelativeLayout)convertView.findViewById(R.id.RelativeLayout1);``

Mais maintenant j'ai pointeur null. Alors, comment doit-je bien le gonfler? Code XML ci-dessous.

02-21 09:21:11.260: E/AndroidRuntime(1506): FATAL EXCEPTION: main
02-21 09:21:11.260: E/AndroidRuntime(1506): java.lang.NullPointerException
02-21 09:21:11.260: E/AndroidRuntime(1506):     at course.labs.todomanager.ToDoListAdapter.getView(ToDoListAdapter.java:93)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:220)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.AbsListView.obtainView(AbsListView.java:2177)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.ListView.makeAndAddView(ListView.java:1840)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.ListView.fillSpecific(ListView.java:1321)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.ListView.layoutChildren(ListView.java:1633)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.AbsListView.onLayout(AbsListView.java:2012)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.View.layout(View.java:14289)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewGroup.layout(ViewGroup.java:4562)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.View.layout(View.java:14289)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewGroup.layout(ViewGroup.java:4562)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:349)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.View.layout(View.java:14289)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewGroup.layout(ViewGroup.java:4562)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.View.layout(View.java:14289)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewGroup.layout(ViewGroup.java:4562)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1976)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1730)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.Choreographer.doCallbacks(Choreographer.java:562)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.Choreographer.doFrame(Choreographer.java:532)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.os.Handler.handleCallback(Handler.java:730)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.os.Handler.dispatchMessage(Handler.java:92)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.os.Looper.loop(Looper.java:137)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at android.app.ActivityThread.main(ActivityThread.java:5103)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at java.lang.reflect.Method.invokeNative(Native Method)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at java.lang.reflect.Method.invoke(Method.java:525)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-21 09:21:11.260: E/AndroidRuntime(1506):     at dalvik.system.NativeStart.main(Native Method)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/titleView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:textAppearance="?android:attr/textAppearanceLarge" >
</TextView>
<TextView
android:id="@+id/StatusLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/statusCheckBox"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="17dp"
android:text="@string/done_string" >
</TextView>
<CheckBox
android:id="@+id/statusCheckBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginTop="52dp"
android:layout_toRightOf="@+id/StatusLabel" >
</CheckBox>
<TextView
android:id="@+id/PriorityLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/statusCheckBox"
android:layout_alignTop="@+id/StatusLabel"
android:layout_toLeftOf="@+id/priorityView"
android:text="@string/priority_string" >
</TextView>
<TextView
android:id="@+id/priorityView"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/statusCheckBox"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/StatusLabel" >
</TextView>
<TextView
android:id="@+id/DateLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/statusCheckBox"
android:text="@string/date_string" >
</TextView>
<TextView
android:id="@+id/dateView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/DateLabel"
android:layout_toRightOf="@+id/DateLabel" >
</TextView>
</RelativeLayout>

OriginalL'auteur Mabjik | 2014-02-21

11

Vous avez besoin pour gonfler une mise en page avant l'initialisation des points de vue.
```
convertView = mInflater.inflate(R.layout.yourlayout, parent, false);
```
Dans le constructeur initialise mInflater
```
LayoutInflater mInflater; //declare
```
Puis dans le constructeur
```
mInflater = LayoutInflater.from(context); //context pass to the constructor of adapter
```
Merci!!!! Il a travaillé!

OriginalL'auteur Raghunandan

essayez ceci:

RelativeLayout itemLayout = (RelativeLayout) LayoutInflater.from(mContext).inflate(
R.layout.todo_item, parent, false);

OriginalL'auteur Eng. Samer T

Je suppose que vous êtes à la rédaction de la coutume adaptateur:

@Override
public View getView(int position, View convertView, ViewGroup parent) {
View itemLayout;
if (convertView == null) {
itemLayout = inflater.inflate(R.layout.fragment_active_orders_item, parent, false);
} else {
itemLayout = convertView;
}
//do what you want with itemLayout;
return itemLayout;
}

Déclarer LayoutInflater inflater et initialiser inflater de votre carte comme inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

OriginalL'auteur nikis

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