title: Android Application crashing when opening an activity - Stacktrace attached
body: <p>I am relatively new to Android development; I have an application that obtains rss feeds from websites. When I open the list of articles presented on a listview, and try opening the specific article, the application crashes.</p>
  
  <p>Could someone please tell me how I can fix this?</p>
  
  <p>I have put ACRA in the application, and have the crash reports sent via email. They are entered below. Help would be much appreciated!</p>
  
  <p>Following is the stacktrace obtained:</p>
  
  <pre><code>    USER_COMMENT=null
  ANDROID_VERSION=4.1.2
  APP_VERSION_NAME=1.0
  BRAND=samsung
  PHONE_MODEL=GT-N8000
  CUSTOM_DATA=
  STACK_TRACE=android.content.ActivityNotFoundException: Unable to find explicit activity class {com.j.infographx/com.j.infographx.DisPlayWebPageActivity}; have you declared this activity in your AndroidManifest.xml?
  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1556)
  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1431)
  at android.app.Activity.startActivityForResult(Activity.java:3428)
  at android.app.Activity.startActivityForResult(Activity.java:3389)
  at android.app.Activity.startActivity(Activity.java:3599)
  at android.app.Activity.startActivity(Activity.java:3567)
  at com.j.infographx.ListRSSItemsActivity$1.onItemClick(ListRSSItemsActivity.java:79)
  at android.widget.AdapterView.performItemClick(AdapterView.java:301)
  at android.widget.AbsListView.performItemClick(AbsListView.java:1287)
  at android.widget.AbsListView$PerformClick.run(AbsListView.java:3078)
  at android.widget.AbsListView$1.run(AbsListView.java:4161)
  at android.os.Handler.handleCallback(Handler.java:615)
  at android.os.Handler.dispatchMessage(Handler.java:92)
  at android.os.Looper.loop(Looper.java:137)
  at android.app.ActivityThread.main(ActivityThread.java:4921)
  at java.lang.reflect.Method.invokeNative(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:511)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
  at dalvik.system.NativeStart.main(Native Method)
  </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.j.infographx"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;uses-sdk
          android:minSdkVersion="8"
          android:targetSdkVersion="18" /&gt;
  
      &lt;!-- Internet Permissions --&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:name="MyApplication"&gt;
          &lt;activity
              android:configChanges="keyboardHidden|orientation"
              android:name="com.j.infographx.MainActivity"
              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;!-- Add New Site Activity --&gt;
          &lt;activity android:name=".AddNewSiteActivity"/&gt;
  
          &lt;!-- List rss items Activity --&gt;
          &lt;activity android:name=".ListRSSItemsActivity"
              android:configChanges="keyboardHidden|orientation"/&gt;
  
          &lt;!-- Display webpage Activity --&gt;
          &lt;activity android:name=".DisplayWebPageActivity"
              android:theme="@android:style/Theme.NoTitleBar"
              android:configChanges="keyboardHidden|orientation"/&gt; 
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>