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POUnable to instantiate activity in android
 

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    <p>when i am running my project it will show the following message on log cat please help me. i have cleaned project many times. and i am using rest Templates.</p> <pre><code>06-06 14:08:42.251: ERROR/AndroidRuntime(432): FATAL EXCEPTION: main 06-06 14:08:42.251: ERROR/AndroidRuntime(432): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{org.shopzilla.android.common/org.shopzilla.android.common.MainActivity}: java.lang.ClassNotFoundException: org.shopzilla.android.common.MainActivity in loader dalvik.system.PathClassLoader[/data/app/org.shopzilla.android.common-2.apk] 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.os.Handler.dispatchMessage(Handler.java:99) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.os.Looper.loop(Looper.java:123) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.ActivityThread.main(ActivityThread.java:3683) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at java.lang.reflect.Method.invokeNative(Native Method) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at java.lang.reflect.Method.invoke(Method.java:507) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at dalvik.system.NativeStart.main(Native Method) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): Caused by: java.lang.ClassNotFoundException: org.shopzilla.android.common.MainActivity in loader dalvik.system.PathClassLoader[/data/app/org.shopzilla.android.common-2.apk] 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 06-06 14:08:42.251: ERROR/AndroidRuntime(432): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561) </code></pre> <p>*<em>Manifest File is *</em></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.shopzilla.android.common" android:versionCode="1" android:versionName="1.0"&gt; &lt;application android:icon="@drawable/icon" android:label="@string/app_name"&gt; &lt;activity android:name=".MainActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait" 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="org.shopzilla.android.search.SearchTabActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.Barcode.BarcodeTabActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.favorites.MyFavoritesTabActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.search.SearchResultActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.search.SearchSuggestionActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.search.SearchGridActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.search.SearchRefine" android:theme="@android:style/Theme.Translucent.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.product.ProductComparisonActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.product.ProductDetailActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.product.ProductShareActivity" android:theme="@android:style/Theme.Translucent.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.product.ProductZoomActivity" android:theme="@android:style/Theme.Translucent.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.moretab.SettingActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.moretab.AboutActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.moretab.PrivacyPolicyActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.favorites.MyfavoritesTabActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.facebook.FacebookActivity" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="org.shopzilla.android.moretab.More" android:theme="@android:style/Theme.Translucent.NoTitleBar" android:screenOrientation="portrait"&gt;&lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.CaptureActivity" android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" android:windowSoftInputMode="stateAlwaysHidden"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.VIEW"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;category android:name="android.intent.category.BROWSABLE"/&gt; &lt;/intent-filter&gt; &lt;intent-filter&gt; &lt;action android:name="com.google.zxing.client.android.SCAN"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;!-- Allow web apps to launch Barcode Scanner by linking to http://zxing.appspot.com/scan. --&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.VIEW"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;category android:name="android.intent.category.BROWSABLE"/&gt; &lt;data android:scheme="http" android:host="zxing.appspot.com" android:path="/scan"/&gt; &lt;/intent-filter&gt; &lt;!-- We also support a Google Product Search URL. --&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.VIEW"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;category android:name="android.intent.category.BROWSABLE"/&gt; &lt;data android:scheme="http" android:host="www.google.com" android:path="/m/products/scan"/&gt; &lt;/intent-filter&gt; &lt;!-- And the UK version. --&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.VIEW"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;category android:name="android.intent.category.BROWSABLE"/&gt; &lt;data android:scheme="http" android:host="www.google.co.uk" android:path="/m/products/scan"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.PreferencesActivity" android:label="@string/preferences_name"&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.encode.EncodeActivity"&gt; &lt;intent-filter&gt; &lt;action android:name="com.google.zxing.client.android.ENCODE"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;!-- This allows us to handle the Share button in Contacts. --&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.SEND"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;data android:mimeType="text/x-vcard"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.book.SearchBookContentsActivity" android:label="@string/sbc_name" android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden"&gt; &lt;intent-filter&gt; &lt;action android:name="com.google.zxing.client.android.SEARCH_BOOK_CONTENTS"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.wifi.WifiActivity" android:label="@string/wa_name" android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden"&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.share.ShareActivity" android:label="@string/share_name" android:screenOrientation="user"&gt; &lt;intent-filter&gt; &lt;action android:name="com.google.zxing.client.android.SHARE"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.share.BookmarkPickerActivity" android:label="@string/bookmark_picker_name"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.PICK"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.share.AppPickerActivity" android:label="@string/app_picker_name"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.PICK"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.HelpActivity" android:screenOrientation="user"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.VIEW"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;uses-permission android:name="android.permission.CAMERA"/&gt; &lt;uses-permission android:name="android.permission.READ_CONTACTS"/&gt; &lt;uses-permission android:name="android.permission.WRITE_CONTACTS"/&gt; &lt;uses-permission android:name="android.permission.INTERNET"/&gt; &lt;uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS"/&gt; &lt;uses-permission android:name="android.permission.VIBRATE"/&gt; &lt;uses-permission android:name="android.permission.FLASHLIGHT"/&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt; &lt;!-- Wifi related --&gt; &lt;uses-permission android:name="android.permission.WRITE_SETTINGS" /&gt; &lt;uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt; &lt;uses-permission android:name="android.permission.WAKE_LOCK" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"&gt;&lt;/uses-permission&gt; &lt;/manifest&gt; </code></pre> <p>On Create code is</p> <pre><code> super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btn = (Button)findViewById(R.id.btn_Search); Button btn_scanbar = (Button)findViewById(R.id.btn_ScanBar); txt_search = (TextView)findViewById(R.id.txt_Search); recent.add(txt_search.getText().toString()); keyword= txt_search.getText().toString(); //Open Search Result Activity showDialog(0); btn.setOnClickListener(new View.OnClickListener() { public void onClick(View arg0) { // TODO Auto-generated method stub Intent intent = new Intent(MainActivity.this,SearchResultActivity.class); intent.putExtra("keyword",txt_search.getText().toString()); startActivity(intent); } }); //Open Scan BarCode Activity btn_scanbar.setOnClickListener(new View.OnClickListener() { public void onClick(View arg0) { // TODO Auto-generated method stub Intent intent = new Intent(MainActivity.this,CaptureActivity.class); startActivity(intent); } }); //Geo Coding this.locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); // Subscribe to the location manager's updates on the current location this.locationManager.requestLocationUpdates("gps", (long)30000, (float) 10.0, new LocationListener() { public void onLocationChanged(Location arg0) { handleLocationChanged(arg0); } public void onProviderDisabled(String arg0) { // TODO Auto-generated method stub } public void onProviderEnabled(String arg0) { // TODO Auto-generated method stub } public void onStatusChanged(String arg0, int arg1, Bundle arg2) { // TODO Auto-generated method stub } }); </code></pre>
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