title: android.content.ActivityNotFoundException: Unable to find explicit activity class
body: <p>I get this error:</p>
  
  <pre><code>06-06 10:45:19.685: E/AndroidRuntime(554): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.Android.myApp/com.Android.myApp.Facebook.Example}; have you declared this activity in your AndroidManifest.xml?
  </code></pre>
  
  <p>But i have declared it in my manifest file. what might be the other reasons for such exception?</p>
  
  <p>My manifest.xml</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.Android.myApp"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;uses-sdk android:minSdkVersion="4" /&gt;
  
      &lt;uses-feature android:name="android.hardware.camera" /&gt;
  
      &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
      &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /&gt;
      &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /&gt;
      &lt;uses-permission android:name="android.permission.CAMERA" /&gt;
      &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;
  
      &lt;application
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@android:style/Theme.Light" &gt;
  
          &lt;activity
              android:name=".SignUpActivity"
              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=".SignInActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".HomeActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".selectCityActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".FeedListViewActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".SearchActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".IWantActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".DateActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".ShareActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".ShareProductActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".SharePriceActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".ShareStoreActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".ProfileActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".ShowMapActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".ParticularEntryActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".MyLocationActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".MapMarkerActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".BarcodeActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".BarcodeResult"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".FeedbackActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".SplashActivity"
              android:label="@string/app_name" /&gt;
          &lt;activity
              android:name=".Example"
              android:label="@string/app_name" /&gt;
  
          &lt;uses-library android:name="com.google.android.maps" /&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>