TextView with custom style causing strange inflate exception
I am working on an Android project and I am creating a custom list view. The list view contains multiple text views, and I am creating a style for my text view so I haven't got to duplicate the same style over and over again.
Below is my layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView android:id="@+id/txtFirstOccurred"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
style="@style/CrashGroup"/>
<TextView android:id="@+id/txtLastOccurred"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
style="@style/CrashGroup"/>
</LinearLayout>
Below is my style for my textview
<style name="CrashGroup">
<item name="android:singleLine">false</item>
<item name="android:textSize">@android:style/TextAppearance.Small</item>
<item name="android:gravity">center_vertical</item>
</style>
Below is how I am inflating my XML to be displayed on my list view.
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
try
{
convertView = LayoutInflater.from(getContext()).inflate(R.layout.android_crash_group_layout, null);
TextView txtFirstOccurred = (TextView)convertView.findViewById(R.id.txtFirstOccurred);
txtFirstOccurred.setText(getItem(position).getFirstOccurred());
TextView txtLastOccurred = (TextView)convertView.findViewById(R.id.txtLastOccurred);
txtLastOccurred.setText(getItem(position).getLastOccurred());
return convertView;
}
catch (Exception ex)
{
Log.e(TAG, ex.toString());
return null;
}
}
The error I am getting is:
Process: com.BoardiesITSolutions.CritiMonApp, PID: 1451 java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference at android.widget.AbsListView.obtainView(AbsListView.java:2360) at android.widget.ListView.makeAndAddView(ListView.java:1864) at android.widget.ListView.fillDown(ListView.java:698) at android.widget.ListView.fillFromTop(ListView.java:759) at android.widget.ListView.layoutChildren(ListView.java:1673) at android.widget.AbsListView.onLayout(AbsListView.java:2148) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.LinearLayout.se tChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.lay out(ViewGroup.java:4966) at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:890) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(Linear Layout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15596) at android.view.ViewGroup.layout(ViewGroup.java:4966) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2072) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1829) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) at android.view.Choreographer.doCallbacks(Choreographer.java:580) at android.view.Choreographer.doFrame(Choreographer.java:550) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
It seems to be something to do with the style as if I remove this style attribute from the text views it seems to work OK.
Thanks for any help you can provide.
I think the convertView you are returning is null at times, because handling the convertView is tricky.
Make sure you have a value. You can use smth like :
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
TextView text = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.listrow_details, null);
}
text = (TextView) convertView.findViewById(R.id.textView1);
text.setText(children);
return convertView;
}
Hope it helps.
android：textSize必须是维度值所以，像这样改变你的风格，
<style name="CrashGroup" parent="@android:style/TextAppearance.Small">
<item name="android:singleLine">false</item>
<item name="android:gravity">center_vertical</item>
</style>