I have created a custom Cursor Adapter for my list.The list gets some data from a database
My problem is that my app force closes when i try to get to my activity and there is no item in the database to show.I would like to get a toast message if there is no entry in my database and not crash my app.
This is my logCat :
02-03 15:21:05.710: E/AndroidRuntime(24768): FATAL EXCEPTION: main
02-03 15:21:05.710: E/AndroidRuntime(24768): java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.ListView.clearRecycledState(ListView.java:513)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.ListView.resetList(ListView.java:500)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.ListView.layoutChildren(ListView.java:1534)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.AbsListView.onLayout(AbsListView.java:1863)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.View.layout(View.java:11278)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewGroup.layout(ViewGroup.java:4224)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.View.layout(View.java:11278)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewGroup.layout(ViewGroup.java:4224)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.FrameLayout.onLayout(FrameLayout.java:431)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.View.layout(View.java:11278)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewGroup.layout(ViewGroup.java:4224)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.View.layout(View.java:11278)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewGroup.layout(ViewGroup.java:4224)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.widget.FrameLayout.onLayout(FrameLayout.java:431)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.View.layout(View.java:11278)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewGroup.layout(ViewGroup.java:4224)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1489)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.os.Handler.dispatchMessage(Handler.java:99)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.os.Looper.loop(Looper.java:137)
02-03 15:21:05.710: E/AndroidRuntime(24768): at android.app.ActivityThread.main(ActivityThread.java:4424)
02-03 15:21:05.710: E/AndroidRuntime(24768): at java.lang.reflect.Method.invokeNative(Native Method)
02-03 15:21:05.710: E/AndroidRuntime(24768): at java.lang.reflect.Method.invoke(Method.java:511)
02-03 15:21:05.710: E/AndroidRuntime(24768): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
02-03 15:21:05.710: E/AndroidRuntime(24768): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
02-03 15:21:05.710: E/AndroidRuntime(24768): at dalvik.system.NativeStart.main(Native Method)
02-03 15:21:07.007: I/Process(24768): Sending signal. PID: 24768 SIG: 9
CODE:
public class Adapter extends CursorAdapter{
Cursor c;
LayoutInflater inflater;
Context context;
public Adapter(Context context, Cursor c) {
super(context, c);
this.c = c;
this.context = context;
inflater = LayoutInflater.from(context);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View v = null;
try{
v = inflater.inflate(R.layout.row, null);}
catch (Exception e) {
e.printStackTrace();
}
return v;
}
@Override
public void bindView(View view, final Context context, final Cursor cursor) {
final TextView txtName = (TextView) view.findViewById(R.id.textView01);
txtName.setText(cursor.getString(cursor.getColumnIndex(DBHelper.NAME)));
ImageButton button = (ImageButton) view.findViewById(R.id.btn);
button.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
Toast.makeText(context,"item Deleted", Toast.LENGTH_SHORT).show();
}
});
}
}
RR.layout.row
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:background="#ffffff" android:gravity="center_vertical"
android:orientation="horizontal">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="vertical"
android:layout_weight="1" >
<TextView
android:id="@+id/textView01" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textColor="#000000"
android:textSize="16dp" android:textStyle="bold" />
<ImageButton
android:id="@+id/btn"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:background="@drawable/btn_bg" />
</LinearLayout>
</LinearLayout>
you are passing wrong type as your LayoutParameters should be AbsListView.LayoutParams
as it is written in your exception: