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POon item click runtime error in android
 

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    <p>I am new to android ,i am trying to create a view pager from a grid view but i have a problem while clicking on the item in the grid view.</p> <p>here is my code</p> <p>ImageAdapter.java </p> <pre><code>import com.netvariant.qareeboon.android.R; import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; public class ImageAdapter extends BaseAdapter { private Context mContext; public ImageAdapter(Context c) { mContext = c; } public int getCount() { return mThumbIds.length; } public Object getItem(int position) { return mThumbIds[position]; } public long getItemId(int position) { return 0; } // Create a new ImageView for each item referenced by the Adapter public View getView(int position, View convertView, ViewGroup parent) { ImageView imageView; if (convertView == null) { // If it's not recycled, initialize some attributes imageView = new ImageView(mContext); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); } else { imageView = (ImageView) convertView; } imageView.setImageResource(mThumbIds[position]); return imageView; } </code></pre> <p>ImagePagerAdapter .java</p> <pre><code>import java.util.List; import android.support.v4.view.PagerAdapter; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; public class ImagePagerAdapter extends PagerAdapter { private List&lt;ImageView&gt; images; public ImagePagerAdapter(List&lt;ImageView&gt; images) { this.images = images; } @Override public Object instantiateItem(ViewGroup container, int position) { ImageView imageView = images.get(position); container.addView(imageView); return imageView; } @Override public void destroyItem(ViewGroup container, int position, Object object) { container.removeView(images.get(position)); } @Override public int getCount() { return images.size(); } @Override public boolean isViewFromObject(View view, Object o) { return view == o; } } // References to our images in res &gt; drawable public Integer[] mThumbIds = { R.drawable.bg_logo, R.drawable.three, R.drawable.four, R.drawable.two, R.drawable.one, R.drawable.btn_about, }; } </code></pre> <p>ImageViewPager .java</p> <pre><code>import java.util.ArrayList; import java.util.List; import com.netvariant.qareeboon.android.R; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.widget.ImageView; public class ImageViewPager extends Activity { // Declare Variable int position; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Set title for the ViewPager setTitle("ViewPager"); // Get the view from view_pager.xml setContentView(R.layout.view_pager); // Retrieve data from MainActivity on item click event Intent p = getIntent(); position = p.getExtras().getInt("id"); ImageAdapter imageAdapter = new ImageAdapter(this); List&lt;ImageView&gt; images = new ArrayList&lt;ImageView&gt;(); // Retrieve all the images for (int i = 0; i &lt; imageAdapter.getCount(); i++) { ImageView imageView = new ImageView(this); imageView.setImageResource(imageAdapter.mThumbIds[i]); imageView.setScaleType(ImageView.ScaleType.CENTER); images.add(imageView); } // Set the images into ViewPager ImagePagerAdapter pageradapter = new ImagePagerAdapter(images); ViewPager viewpager = (ViewPager) findViewById(R.id.pager); viewpager.setAdapter(pageradapter); // Show images following the position viewpager.setCurrentItem(position); } } </code></pre> <p>the activity</p> <pre><code>import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.GridView; import android.view.View; public class InfoGraphicActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Set title for the GridView setTitle("GridView"); // Get the view from grid_view.xml setContentView(R.layout.grid_view); // Set the images from ImageAdapter.java to GridView GridView gridview = (GridView) findViewById(R.id.gridview); // ViewPager viewPager =(ViewPager)findViewById(R.id.pager); gridview.setAdapter(new ImageAdapter(this)); // Listening to GridView item click gridview.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; parent, View v, int position, long id) { // Launch ImageViewPager.java on selecting GridView Item Intent i = new Intent(getApplicationContext(), ImageViewPager.class); // Send the click position to ImageViewPager.java using intent i.putExtra("id", position); // Start ImageViewPager startActivity(i); } }); } // Not using options menu for this tutorial @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.info_graphic, menu); return true; } } </code></pre> <p>you can see error log below:</p> <pre><code>08-21 11:03:38.289: E/AndroidRuntime(5196): FATAL EXCEPTION: main 08-21 11:03:38.289: E/AndroidRuntime(5196): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.netvariant.qareeboon.android/com.netvariant.android.qareeboon.ImageViewPager}; have you declared this activity in your AndroidManifest.xml? 08-21 11:03:38.289: E/AndroidRuntime(5196): at com.netvariant.android.qareeboon.InfoGraphicActivity$1.onItemClick(InfoGraphicActivity.java:40) 08-21 11:03:38.289: E/AndroidRuntime(5196): at android.widget.AdapterView.performItemClick(AdapterView.java:292) 08-21 11:03:38.289: E/AndroidRuntime(5196): at android.widget.AbsListView.performItemClick(AbsListView.java:1065) </code></pre> <p>android manifest</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.netvariant.qareeboon.android" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt; &lt;application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" &gt; &lt;activity android:name="com.netvariant.android.qareeboon.MainActivity" android:label="@string/app_name" android:screenOrientation="portrait" &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="com.netvariant.android.qareeboon.MainMenu" android:label="@string/title_activity_main_menu" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.EducateActivity" android:label="@string/title_activity_consult" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.ConsultActivity" android:label="@string/title_activity_consult" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.ContactUsActivity" android:label="@string/title_activity_contact_us" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.InfoGraphicActivity" android:label="@string/title_activity_info_graphic" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.qareeboon.android.SettingsActivity" android:label="@string/title_activity_settings" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.SettingActivity" android:label="@string/title_activity_setting" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.MyConsultation" android:label="@string/title_activity_my_consultation" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.AboutUs" android:label="@string/title_activity_about_us" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.ArticleActivity" android:label="@string/title_activity_article" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.Comments" android:label="@string/title_activity_add_comment" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name="com.netvariant.android.qareeboon.AddComment" android:label="@string/title_activity_add_comment" android:screenOrientation="portrait" &gt; &lt;/activity&gt; &lt;activity android:name=".ImageViewPager" &gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre>
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    1. COHave you declared your ImageViewPager activity in Android manifest.xml?
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    2. COyes i did ... have a look at the manifest file please
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    3. COdeclare the full path to the class in manifest
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