ClassCastException: android.app.Application

La classe qui provoque l'erreur est donnée ci-dessous:

package com.extrasmart;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
//import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.AdapterView.OnItemSelectedListener;
public class ActivityImgGrid extends Activity {
ExtraSmartApplication application = (ExtraSmartApplication) getApplication();
GridView mGrid;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activityimg_grid);
mGrid = (GridView) findViewById(R.id.imgGrid);
mGrid.setAdapter(new AppsAdapter());
mGrid.setOnItemSelectedListener(new OnItemSelectedListener()
{
public void onNothingSelected(AdapterView v) {
//TODO Auto-generated method stub
}
public void onItemSelected(AdapterView parent, View v, int position, long id) {
ExtraSmartApplication application = (ExtraSmartApplication) getApplication();
application.setSelCategoryIcon(position);
setResult(RESULT_OK);        
finish();
}
});
}
public class AppsAdapter extends BaseAdapter {
ExtraSmartApplication application = (ExtraSmartApplication) getApplication();
private Integer[] imageIDs = application.getCategoryIcons();
public AppsAdapter() {
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i;
if (convertView == null) {
i = new ImageView(ActivityImgGrid.this);
//i.setScaleType(ImageView.ScaleType.FIT_CENTER);
i.setLayoutParams(new GridView.LayoutParams(48, 48));
i.setScaleType(ImageView.ScaleType.CENTER_CROP);
i.setPadding(5, 5, 5, 5);
} else {
i = (ImageView) convertView;
}
i.setImageResource(imageIDs[position]);
return i;
}
public final int getCount() {
return imageIDs.length;
}
public final Object getItem(int position) {
return imageIDs[position];
}
public final long getItemId(int position) {
return position;
}
}
}

Le fichier xml:

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/imgGrid"
android:layout_width="fill_parent" 
android:layout_height="fill_parent"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:columnWidth="48px"
android:stretchMode="columnWidth"    
android:gravity="center"
android:minHeight="48px"
android:minWidth="48px"
/>

Classe utilisée par ActivityImgGrid classe:

public class ExtraSmartApplication extends Application {
//private static final String APP_CREDENTIALS = null;
private Integer selCategoryImg;
private boolean isCardImageNew = false;
private byte[] cardImage = null;
private Integer[] categoryImgs = {
R.drawable.cricket,
R.drawable.football,
R.drawable.vollyball
};
private boolean isCatCreated = false;
public ExtraSmartApplication() {
super();
}
@Override
public void onTerminate() {
super.onTerminate();
}
public Integer getSelCategoryIcon() {
return this.selCategoryImg;
}
public Integer[] getCategoryIcons() {
return this.categoryImgs;
}
public void setSelCategoryIcon(int position) {
this.selCategoryImg = categoryImgs[position];
}
public void setCatCreated(boolean isCatCreated) {
this.isCatCreated = isCatCreated;
}
public boolean isCatCreated() {
return isCatCreated;
}
public void setCardImageNew(boolean isCardImageNew) {
this.isCardImageNew = isCardImageNew;
}
public boolean isCardImageNew() {
return isCardImageNew;
}
public void setCardImage(byte[] cardImage) {
this.cardImage = cardImage;
}
public byte[] getCardImage() {
return cardImage;
}
}

OriginalL'auteur niya | 2010-06-23