Develop Reference

Cordova hello world app crashing

I am new in Android Development. I am working on cordova platform
I have created a sample hello world app and getting this error when i am trying to open it in genymotion. ALthough the app compile succesfully but when i run it in genymotion it just shows the prompt with text "Unfortunately "APP" has stopped."
The Error log shows.
01-12 08:16:04.867 2073-2073/com.technoserves.crudnew D/dalvikvm﹕ Late-enabling CheckJNI
01-12 08:16:06.107 2073-2073/com.technoserves.crudnew W/dalvikvm﹕ Unable to resolve superclass of Lcom/technoserves/crudnew/CordovaApp; (14)
01-12 08:16:06.119 2073-2073/com.technoserves.crudnew W/dalvikvm﹕ Link of class 'Lcom/technoserves/crudnew/CordovaApp;' failed
01-12 08:16:06.135 2073-2073/com.technoserves.crudnew D/AndroidRuntime﹕ Shutting down VM
01-12 08:16:06.135 2073-2073/com.technoserves.crudnew W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xa6142908)
01-12 08:16:06.155 2073-2073/com.technoserves.crudnew E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.technoserves.crudnew/com.technoserves.crudnew.CordovaApp}: java.lang.ClassNotFoundException: Didn't find class "com.technoserves.crudnew.CordovaApp" on path: /data/app/com.technoserves.crudnew-1.apk
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
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:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.technoserves.crudnew.CordovaApp" on path: /data/app/com.technoserves.crudnew-1.apk
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
            at android.app.ActivityThread.access$600(ActivityThread.java:141)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5041)
            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:793)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
            at dalvik.system.NativeStart.main(Native Method)
01-12 08:16:22.399 2073-2073/com.technoserves.crudnew I/Process﹕ Sending signal. PID: 2073 SIG: 9
I have updated my cordova to resolve but still same error however a few days ago it was working fine and i have build some apps.

First download Cordova jar file from following link:
http://www.java2s.com/Code/JarDownload/cordova/cordova-1.8.1.jar.zip
after that extract the folder and put cordova-1.8.1 inside your libs folder of project in eclipse
And right click on your project--> properties and Select Android from left pane and scroll to bottom remove the cordova library if added.
then clean and build your project.

illegarlargumentexception in inflating library in popup window

I'm working on showing emoji in popup window just like whatsapp from this library. I have created a popup window to show it in main activity. On click of button I made the following code
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
View popUp = getLayoutInflater().inflate(R.layout.popup_item, null);
window = new PopupWindow(getApplicationContext());
window = new PopupWindow(popUp,LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT,true);
window.setAnimationStyle(android.R.style.Animation_Activity);
window.showAtLocation(popUp, Gravity.BOTTOM, 0, 0);
window.setFocusable(true);
window.setOutsideTouchable(true);
}
});
The popup_item contain the following
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:emojicon="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
tools:context="com.rockerhieu.emojicon.example.MainActivity$PlaceholderFragment" >
<com.rockerhieu.emojicon.EmojiconTextView
android:id="#+id/txtEmojicon"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<com.rockerhieu.emojicon.EmojiconEditText
android:id="#+id/editEmojicon"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
emojicon:emojiconSize="28sp" />
<fragment
android:id="#+id/emojicons"
android:layout_width="fill_parent"
android:layout_height="220dp"
class="com.rockerhieu.emojicon.EmojiconsFragment" />
</LinearLayout>
it is showing the following error.
01-24 01:07:25.245: E/AndroidRuntime(5420): FATAL EXCEPTION: main
01-24 01:07:25.245: E/AndroidRuntime(5420): android.view.InflateException: Binary XML file line #21: Error inflating class fragment
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
01-24 01:07:25.245: E/AndroidRuntime(5420): at com.example.popupemoji.MainActivity$1.onClick(MainActivity.java:29)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.View.performClick(View.java:4204)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.View$PerformClick.run(View.java:17355)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.os.Handler.handleCallback(Handler.java:725)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.os.Handler.dispatchMessage(Handler.java:92)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.os.Looper.loop(Looper.java:137)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.app.ActivityThread.main(ActivityThread.java:5041)
01-24 01:07:25.245: E/AndroidRuntime(5420): at java.lang.reflect.Method.invokeNative(Native Method)
01-24 01:07:25.245: E/AndroidRuntime(5420): at java.lang.reflect.Method.invoke(Method.java:511)
01-24 01:07:25.245: E/AndroidRuntime(5420): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-24 01:07:25.245: E/AndroidRuntime(5420): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-24 01:07:25.245: E/AndroidRuntime(5420): at dalvik.system.NativeStart.main(Native Method)
01-24 01:07:25.245: E/AndroidRuntime(5420): Caused by: java.lang.IllegalArgumentException: Binary XML file line #21: Duplicate id 0x7f080000, tag null, or parent id 0x0 with another fragment for com.rockerhieu.emojicon.EmojiconsFragment
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:296)
01-24 01:07:25.245: E/AndroidRuntime(5420): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
I found that the reason for it is the nested fragment. But don't know the solution for it. Please help on this. I really need to solve this. I'm new to android. Thanks.

Eclipse Android exceptions are hidden

The code in my book created a NPE for me to see. But, when I open the logcat in ddms, I cannot see all the errors (it says 11 more). How do I see all the exceptions ? Please see the photo below -
EDIT - Image for full trace posted. Also posting text of trace by copy pasting.
Image -
D/QuizActivity(836): onCreate(Bundle) called
D/AndroidRuntime(836): Shutting down VM
W/dalvikvm(836): threadid=1: thread exiting with uncaught exception (group=0x41465700)
E/AndroidRuntime(836): FATAL EXCEPTION: main
E/AndroidRuntime(836): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bignerdranch.android.geoquiz/com.bignerdranch.android.geoquiz.QuizActivity}: java.lang.NullPointerException
E/AndroidRuntime(836): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
E/AndroidRuntime(836): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
E/AndroidRuntime(836): at android.app.ActivityThread.access$600(ActivityThread.java:141)
E/AndroidRuntime(836): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
E/AndroidRuntime(836): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(836): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(836): at android.app.ActivityThread.main(ActivityThread.java:5103)
E/AndroidRuntime(836): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(836): at java.lang.reflect.Method.invoke(Method.java:525)
E/AndroidRuntime(836): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
E/AndroidRuntime(836): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime(836): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(836): Caused by: java.lang.NullPointerException
E/AndroidRuntime(836): at com.bignerdranch.android.geoquiz.QuizActivity.updateQuestion(QuizActivity.java:47)
E/AndroidRuntime(836): at com.bignerdranch.android.geoquiz.QuizActivity.onCreate(QuizActivity.java:111)
E/AndroidRuntime(836): at android.app.Activity.performCreate(Activity.java:5133)
E/AndroidRuntime(836): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
E/AndroidRuntime(836): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
E/AndroidRuntime(836): ... 11 more

You dont usually need the whole stack trace, the main thing to look for is "caused by" message and the class(TAG) which is causing the exception

Use try catch block and Java Doc
printStackTrace to see the full stack trace.
try {
// Expected Exception Rasing Line
} catch (Exception e) {
e.printStackTrace();
}

Unable to resolve superclass of FragmentActivity

I had my environment setup on a previous machine, and I'm on a differnt MacBook. For some strange reason, I keep getting an issue with one of my classes which exend FragmentActivity. It keeps saying it can't find the FragmentActivity class, although I have the support jar in my class path, as per the image:
The detailed error message that I'm seeing is here:
10-23 23:10:16.300 26062-26062/com.testapp W/dalvikvm﹕ Unable to resolve superclass of Lcom/testapp/views/loginregistration/LoginView; (92)
10-23 23:10:16.300 26062-26062/com.testapp W/dalvikvm﹕ Link of class 'Lcom/testapp/views/loginregistration/LoginView;' failed
10-23 23:10:16.300 26062-26062/com.testapp D/AndroidRuntime﹕ Shutting down VM
10-23 23:10:16.300 26062-26062/com.testapp W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x414f8700)
10-23 23:10:16.330 26062-26062/com.testapp E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.testapp/com.testapp.views.loginregistration.LoginView}: java.lang.ClassNotFoundException: Didn't find class "com.testapp.views.loginregistration.LoginView" on path: DexPathList[[zip file "/system/framework/com.google.android.maps.jar", zip file "/data/app/com.testapp-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.testapp-1, /vendor/lib, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2137)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.testapp.views.loginregistration.LoginView" on path: DexPathList[[zip file "/system/framework/com.google.android.maps.jar", zip file "/data/app/com.testapp-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.testapp-1, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2128)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Is there someting else i'm missing?

In your IDE (as shown in your screenshot), check the 'export' box next to the classpath entry that contains the missing class.
I had a similar problem with a class from the Android Support library (Unable to resolve superclass of Lcom ... PagerAdapter). It turned out a library referenced in the .classpath needed to be exported:
From:
<classpathentry
To:
<classpathentry exported="true" ...
For Eclipse users, I fixed the problem by exporting Android Private Libraries in the Java Build Path menu.

Classnotfound exception even when there is class declared

My app runs fine when i run it through eclipse, but when i export it and then install it through adb install and run, it crashes with following stacktrace.
basically, it says that main launcher activity not found, although it is declared, and is set to main activity with launcher category:
Stacktrace:
01-24 11:50:59.029: E/AndroidRuntime(7768): Uncaught handler: thread main exiting due to uncaught exception
01-24 11:50:59.299: E/AndroidRuntime(7768): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.nitinbansal85.android.carplexindia/com.nitinbansal85.android.carplexindia.ActivityDashboard}: java.lang.ClassNotFoundException: com.nitinbansal85.android.carplexindia.ActivityDashboard in loader dalvik.system.PathClassLoader#32518de0
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2474)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2569)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.ActivityThread.access$2200(ActivityThread.java:125)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1914)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.os.Handler.dispatchMessage(Handler.java:99)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.os.Looper.loop(Looper.java:123)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.ActivityThread.main(ActivityThread.java:4420)
01-24 11:50:59.299: E/AndroidRuntime(7768): at java.lang.reflect.Method.invokeNative(Native Method)
01-24 11:50:59.299: E/AndroidRuntime(7768): at java.lang.reflect.Method.invoke(Method.java:521)
01-24 11:50:59.299: E/AndroidRuntime(7768): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:924)
01-24 11:50:59.299: E/AndroidRuntime(7768): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:682)
01-24 11:50:59.299: E/AndroidRuntime(7768): at dalvik.system.NativeStart.main(Native Method)
01-24 11:50:59.299: E/AndroidRuntime(7768): Caused by: java.lang.ClassNotFoundException: com.nitinbansal85.android.carplexindia.ActivityDashboard in loader dalvik.system.PathClassLoader#32518de0
01-24 11:50:59.299: E/AndroidRuntime(7768): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
01-24 11:50:59.299: E/AndroidRuntime(7768): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
01-24 11:50:59.299: E/AndroidRuntime(7768): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
01-24 11:50:59.299: E/AndroidRuntime(7768): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2466)
01-24 11:50:59.299: E/AndroidRuntime(7768): ... 11 more
01-24 11:51:01.369: E/msm7k.gralloc(1281): [unregister] handle 0x43bf20 still locked (state=40000001)
Im also using facebook sdk, and airpush and startApp sdk's, and have included them in order import/export
Any suggestions whats going wrong?
thanx in advance
EDIT
Forget to mention that i had renamed my project and folder that contained it.

For an android app, I'd same issue with an external jar file. In my case the solution was to move the jar from "lib" folder to the android default "libs" folder.
When the jar was in lib folder (was added to build path as well), while there are was no build issue in Eclipse, the app was giving ClassNotFoundException at runtime. Once I moved the jar to "libs" folder, the jar started appearing under "Android Dependencies" and app started working fine.
These are some of the other discussions about the same topic.
1)http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse- android-project
2)http://stackoverflow.com/questions/7185488/android-what-is-the-folder-name-of-the-jar-files-lib-or-libs
3)http://stackoverflow.com/questions/2611105/how-to-specify-lib-folder-for-jars-when-using-android-generated-ant-build-file
may this could help...!!!!!

As the Stacktrace tells that android first starts the NewActivity -> LoadClass -> FindClass -> ClassNotFoundException, could be:
wrong package declaration in Manifest(com.nitinbansal85.android.carplexindia.ActivityDashboard)
Android Debug Bridge(ADB) apk creation problem.
Failed to load other jars from libs
You can also try compiling the project from eclipse and use .apk directly from bin directory of your project and check the difference.