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POSet an item long click listener in GridView
 

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    <p>I want to add an item long click listener, which will set the image selected as wallpaper. I am getting images from web and displaying them in a grid view. My grid activity is shown below. I already have an on click listener to show a full screen image.</p> <pre><code>public class ImageGridActivity extends BaseActivity { String[] imageUrls; DisplayImageOptions options; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.ac_image_grid); Bundle bundle = getIntent().getExtras(); imageUrls = bundle.getStringArray(Extra.IMAGES); options = new DisplayImageOptions.Builder() .showStubImage(R.drawable.stub_image) .showImageForEmptyUri(R.drawable.image_for_empty_url) .cacheInMemory().cacheOnDisc() .bitmapConfig(Bitmap.Config.RGB_565).build(); GridView gridView = (GridView) findViewById(R.id.gridview); gridView.setAdapter(new ImageAdapter()); // Set Long-Clickable gridView.setLongClickable(true); gridView.setOnItemLongClickListener(new OnItemLongClickListener() { @SuppressLint("NewApi") public boolean onItemLongClick(AdapterView&lt;?&gt; parent, View arg1, int position, long arg3) { // TODO Auto-generated method stub ImageAdapter i = (ImageAdapter) parent.getAdapter(); Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), (int) i.getItemId(position)); // Get the WallpaperManager WallpaperManager myWallpaperManager = WallpaperManager .getInstance(getApplicationContext()); try { // Set the clicked bitmap myWallpaperManager.setBitmap(mBitmap); Toast.makeText(ImageGridActivity.this, "Wallpaper set", Toast.LENGTH_SHORT).show(); } catch (IOException e) { Toast.makeText(ImageGridActivity.this, "Error setting wallpaper", Toast.LENGTH_SHORT).show(); } return false; } }); gridView.setOnItemClickListener(new OnItemClickListener() { @SuppressLint("NewApi") @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { startImageGalleryActivity(position); } }); gridView.setOnScrollListener(new PauseOnScrollListener(true, true)); } private void startImageGalleryActivity(int position) { Intent intent = new Intent(this, ImagePagerActivity.class); intent.putExtra(Extra.IMAGES, imageUrls); intent.putExtra(Extra.IMAGE_POSITION, position); startActivity(intent); } public class ImageAdapter extends BaseAdapter { @Override public int getCount() { return imageUrls.length; } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { final ImageView imageView; if (convertView == null) { imageView = (ImageView) getLayoutInflater().inflate( R.layout.item_grid_image, parent, false); } else { imageView = (ImageView) convertView; } imageLoader.displayImage(imageUrls[position], imageView, options); return imageView; } } </code></pre> <blockquote> <p>logcat</p> </blockquote> <pre><code> 01-22 16:00:35.101: E/AndroidRuntime(29785): FATAL EXCEPTION: main 01-22 16:00:35.101: E/AndroidRuntime(29785): android.content.res.Resources$NotFoundException: Resource ID #0x2 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.content.res.Resources.getValue(Resources.java:1105) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:554) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:630) 01-22 16:00:35.101: E/AndroidRuntime(29785): at com.nostra13.example.universalimageloader.ImageGridActivity$1.onItemLongClick(ImageGridActivity.java:67) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.widget.AbsListView.performLongPress(AbsListView.java:2622) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.widget.AbsListView$CheckForLongPress.run(AbsListView.java:2572) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.os.Handler.handleCallback(Handler.java:608) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.os.Handler.dispatchMessage(Handler.java:92) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.os.Looper.loop(Looper.java:156) 01-22 16:00:35.101: E/AndroidRuntime(29785): at android.app.ActivityThread.main(ActivityThread.java:4987) 01-22 16:00:35.101: E/AndroidRuntime(29785): at java.lang.reflect.Method.invokeNative(Native Method) 01-22 16:00:35.101: E/AndroidRuntime(29785): at java.lang.reflect.Method.invoke(Method.java:511) 01-22 16:00:35.101: E/AndroidRuntime(29785): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 01-22 16:00:35.101: E/AndroidRuntime(29785): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 01-22 16:00:35.101: E/AndroidRuntime(29785): at dalvik.system.NativeStart.main(Native Method) </code></pre> <blockquote> <p>android manifest</p> </blockquote> <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.nostra13.example.universalimageloader" android:versionCode="26" android:versionName="1.7.0" &gt; &lt;uses-sdk android:minSdkVersion="5" android:targetSdkVersion="17" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt; &lt;uses-permission android:name="android.permission.SET_WALLPAPER"/&gt; &lt;application android:name=".UILApplication" android:icon="@drawable/app_icon" android:label="@string/app_name" android:allowBackup="True" &gt; &lt;activity android:name=".HomeActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name=".ImageGridActivity" android:label="@string/ac_name_image_grid" /&gt; &lt;activity android:name=".ImagePagerActivity" android:label="@string/ac_name_image_pager" /&gt; &lt;!-- Widget --&gt; &lt;receiver android:name=".widget.UILWidgetProvider"&gt; &lt;meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_provider" /&gt; &lt;intent-filter&gt; &lt;action android:name="android.appwidget.action.APPWIDGET_UPDATE" /&gt; &lt;/intent-filter&gt; &lt;/receiver&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre>
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    1. USMichael
    1. USAbhay Sood
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    1. COlook at log cat its saying Resources$NotFoundException check you had added resources correctly
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      1. USedwin
    2. COdid you provide permission to set wall paper??
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    3. COyes i have added the permission too
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      1. USAbhay Sood
 

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