I'm trying to test for first time my App on my mobile phone, I already did all the usb driver installation, allow non-market apps to install stuff... and now when I launch I get this error on Eclipse LogCat, I don't know what to do anymore, it's a PhoneGap app by the way:
01-22 12:40:08.534: W/asset(15063): Asset path /data/app/com.example.appprueba-1.apk is neither a directory nor file (type=1).
01-22 12:40:08.542: W/asset(15063): Asset path /data/app/com.example.appprueba-1.apk is neither a directory nor file (type=1).
01-22 12:40:08.542: D/AndroidRuntime(15063): Shutting down VM
01-22 12:40:08.542: W/dalvikvm(15063): threadid=1: thread exiting with uncaught exception (group=0x410aa930)
01-22 12:40:08.550: E/AndroidRuntime(15063): FATAL EXCEPTION: main
01-22 12:40:08.550: E/AndroidRuntime(15063): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.appprueba/com.example.appprueba.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.example.appprueba.MainActivity" on path: /data/app/com.example.appprueba-1.apk
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.ActivityThread.access$600(ActivityThread.java:141)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.os.Handler.dispatchMessage(Handler.java:99)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.os.Looper.loop(Looper.java:137)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.ActivityThread.main(ActivityThread.java:5039)
01-22 12:40:08.550: E/AndroidRuntime(15063): at java.lang.reflect.Method.invokeNative(Native Method)
01-22 12:40:08.550: E/AndroidRuntime(15063): at java.lang.reflect.Method.invoke(Method.java:511)
01-22 12:40:08.550: E/AndroidRuntime(15063): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-22 12:40:08.550: E/AndroidRuntime(15063): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-22 12:40:08.550: E/AndroidRuntime(15063): at dalvik.system.NativeStart.main(Native Method)
01-22 12:40:08.550: E/AndroidRuntime(15063): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.appprueba.MainActivity" on path: /data/app/com.example.appprueba-1.apk
01-22 12:40:08.550: E/AndroidRuntime(15063): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
01-22 12:40:08.550: E/AndroidRuntime(15063): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-22 12:40:08.550: E/AndroidRuntime(15063): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
01-22 12:40:08.550: E/AndroidRuntime(15063): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
01-22 12:40:08.550: E/AndroidRuntime(15063): ... 11 more
You might have not put everything on its place, review Tutorials and have set everything as it says..
Check docs and implementation on phonegap website as well as cardova website.
Related
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.
I managed to fix the previous linking problem I had with NDK which was caused by android api 21, and managed to get SDL_TTF built and working easily, but with SDL_Mixer I bumped into another runtime Unsatisfiedlinkererror where the app somehow can't link smpeg2 lib with SDL2_Mixer. This time I don't see how it could have anything to do with api-level and have tried everything I could come up with, gone through every makefile and triple-checked every version.
I am using SDL_Mixer 2.0.0 and smpeg2-2.0.0 as its only dependecy. Smpeg2 is located in jni/ folder and the whole thing is built without compiler coughing.
I downloaded SDL_Mixer 2.0.0 source and put it in jni/ folder, copied smpeg2-2.0.0 from it's external/ folder to jni/ and set from mixer makefile to build only smpeg2. I edited src/Android.mk to see the mixer source and get the shared lib and then edited SDLActivity to pull SDL2_mixer library. SDL_TTF worked this way.
libsmpeg2.so DOES exist in libs/ folder so I don't see how it can't find it.
I am using android-19 as build target for NDK, no warnings or errors are given by the compiler.
01-22 18:17:43.760: D/dalvikvm(22101): Trying to load lib /data/data/com.kebabkeisari.peli/lib/libSDL2.so 0x41d88e78
01-22 18:17:43.760: D/dalvikvm(22101): Added shared lib /data/data/com.kebabkeisari.peli/lib/libSDL2.so 0x41d88e78
01-22 18:17:43.760: D/dalvikvm(22101): Trying to load lib /data/data/com.kebabkeisari.peli/lib/libSDL2_mixer.so 0x41d88e78
01-22 18:17:43.765: W/dalvikvm(22101): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lorg/libsdl/app/SDLActivity;
01-22 18:17:43.765: W/dalvikvm(22101): Class init failed in newInstance call (Lcom/kebabkeisari/peli/Ribale;)
01-22 18:17:43.765: D/AndroidRuntime(22101): Shutting down VM
01-22 18:17:43.765: W/dalvikvm(22101): threadid=1: thread exiting with uncaught exception (group=0x410c52a0)
01-22 18:17:43.765: E/AndroidRuntime(22101): FATAL EXCEPTION: main
01-22 18:17:43.765: E/AndroidRuntime(22101): java.lang.ExceptionInInitializerError
01-22 18:17:43.765: E/AndroidRuntime(22101): at java.lang.Class.newInstanceImpl(Native Method)
01-22 18:17:43.765: E/AndroidRuntime(22101): at java.lang.Class.newInstance(Class.java:1319)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.app.Instrumentation.newActivity(Instrumentation.java:1057)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2015)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.app.ActivityThread.access$600(ActivityThread.java:140)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.os.Handler.dispatchMessage(Handler.java:99)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.os.Looper.loop(Looper.java:137)
01-22 18:17:43.765: E/AndroidRuntime(22101): at android.app.ActivityThread.main(ActivityThread.java:4898)
01-22 18:17:43.765: E/AndroidRuntime(22101): at java.lang.reflect.Method.invokeNative(Native Method)
01-22 18:17:43.765: E/AndroidRuntime(22101): at java.lang.reflect.Method.invoke(Method.java:511)
01-22 18:17:43.765: E/AndroidRuntime(22101): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
01-22 18:17:43.765: E/AndroidRuntime(22101): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
01-22 18:17:43.765: E/AndroidRuntime(22101): at dalvik.system.NativeStart.main(Native Method)
01-22 18:17:43.765: E/AndroidRuntime(22101): Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: link_image[1892]: 1952 could not load needed library 'libsmpeg2.so' for 'libSDL2_mixer.so' (load_library[1094]: Library 'libsmpeg2.so' not found)
01-22 18:17:43.765: E/AndroidRuntime(22101): at java.lang.Runtime.loadLibrary(Runtime.java:370)
01-22 18:17:43.765: E/AndroidRuntime(22101): at java.lang.System.loadLibrary(System.java:535)
01-22 18:17:43.765: E/AndroidRuntime(22101): at org.libsdl.app.SDLActivity.<clinit>(SDLActivity.java:51)
01-22 18:17:43.765: E/AndroidRuntime(22101): ... 15 more
You need to load the libraries in reverse dependency order. That is, if libSDL2_mixer.so depends on libsmpeg2.so, you first need to load libsmpeg2.so before you can try to load libSDL2_mixer.so.
That is, in order to load the library, you need to do this:
System.loadLibrary("smpeg2");
System.loadLibrary("SDL2_mixer");
IIRC this has been fixed in some very recent version of Android, but in order to have things working on older versions, you need to explicitly load them one at a time.
I have used ZBAR library to scan bar code in my Application.
And I got this error log while opening camera on Samsung Galaxy S3 :
java.lang.RuntimeException: startPreview failed
at android.hardware.Camera.startPreview(Native Method)
at com.SGID.MainApp.ScanningFragment.engageCamera(ScanningFragment.java:184)
at com.SGID.MainApp.ScanningFragment.access$10(ScanningFragment.java:154)
at com.SGID.MainApp.ScanningFragment$4.run(ScanningFragment.java:111)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)
java.lang.RuntimeException: Unable to start activity ComponentInfo
{com.SGID.MainApp/com.SGID.MainApp.AllTabsActivity}
: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
at android.app.ActivityThread.access$600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
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:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.SGID.MainApp.ParametersFragment.onCreateView(ParametersFragment.java:78)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1478)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1086)
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1877)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:552)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1167)
at android.app.Activity.performStart(Activity.java:5216)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2073)
... 11 more
EDIT :
Getting error at this line :
CameraPreview mPreview = new CameraPreview(getActivity(), mCamera, previewCb,
autoFocusCB);
Can Anyone help me to resolve this error??
Thanks in advance..
Please help to understand strange application behaviour.
In almost all devices in production everything is OK, I'm using ACRA to collect crash reports. But here is what I've got from Alpha GTR device:
ComponentInfo{com.xxxxxxxxxxx /com.xxxxxxxxxxx.xxxxActivity}: java.lang.ClassNotFoundException: com.xxxxxxxxxxx.xxxxActivity
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2108)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2211)
at android.app.ActivityThread.access$600(ActivityThread.java:149)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1300)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:153)
at android.app.ActivityThread.main(ActivityThread.java:4987)
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:821)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: com.xxxxxxxxxxx.xxxxActivity
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2099)
... 11 more
java.lang.ClassNotFoundException: com.xxxxxxxxxxx.xxxxActivity
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2099)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2211)
at android.app.ActivityThread.access$600(ActivityThread.java:149)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1300)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:153)
at android.app.ActivityThread.main(ActivityThread.java:4987)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
at dalvik.system.NativeStart.main(Native Method)
So application failed to start with strange exception. I've already checked SO questions about it, and just adding libraries as Unable to instantiate activity... Caused by ClassNotFoundException doesn't help here.
Could it be some device-specific exception? My app uses Camera, Google Maps and GPS.
Maybe you have to check if GPS or Camera are supported by the device first?
LocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
I'm pretty new to Android programming, however I'm used to program for iOS though...
Now in iOS you have the function of NSString stringWithContentOfURL. Now my Question is, if there is a similar option in java as well...? While searching in google i've come through some examples, but using them my app always crashes...
I used codes like this: http://www.coderzheaven.com/2011/07/17/how-to-read-webpage-contents-as-a-string-in-android/ but it keeps crashing... Could you please help me?
Thank you!
Edit:
LogCat Errors:
01-22 19:34:12.718: E/AndroidRuntime(5481): FATAL EXCEPTION: main
01-22 19:34:12.718: E/AndroidRuntime(5481): android.os.NetworkOnMainThreadException
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
01-22 19:34:12.718: E/AndroidRuntime(5481): at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
01-22 19:34:12.718: E/AndroidRuntime(5481): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
01-22 19:34:12.718: E/AndroidRuntime(5481): at java.net.InetAddress.getAllByName(InetAddress.java:220)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:653)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:627)
01-22 19:34:12.718: E/AndroidRuntime(5481): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:616)
01-22 19:34:12.718: E/AndroidRuntime(5481): at com.example.test4.DieActivity.meldeAn(DieActivity.java:150)
01-22 19:34:12.718: E/AndroidRuntime(5481): at com.example.test4.DieActivity$1.onClick(DieActivity.java:56)
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.view.View.performClick(View.java:3511)
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.view.View$PerformClick.run(View.java:14105)
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.os.Handler.handleCallback(Handler.java:605)
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.os.Handler.dispatchMessage(Handler.java:92)
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.os.Looper.loop(Looper.java:137)
01-22 19:34:12.718: E/AndroidRuntime(5481): at android.app.ActivityThread.main(ActivityThread.java:4424)
01-22 19:34:12.718: E/AndroidRuntime(5481): at java.lang.reflect.Method.invokeNative(Native Method)
01-22 19:34:12.718: E/AndroidRuntime(5481): at java.lang.reflect.Method.invoke(Method.java:511)
01-22 19:34:12.718: E/AndroidRuntime(5481): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-22 19:34:12.718: E/AndroidRuntime(5481): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-22 19:34:12.718: E/AndroidRuntime(5481): at dalvik.system.NativeStart.main(Native Method)
you have tried to perform (network) IO on the UI thread. this is not allowed. why? because if you hang the UI thread, the system will post an ANR (activity not responding) dialog to the user..
you must perform IO asynchronously,
new AysyncTask<String,Void,String>() {
protected String doInBackground(String... urls) {
String url = urls[0];
// do network operation, get result in a string (for example)
return resultString;
}
protected void onPostExecute(String result) {
JSONObject jo = new JSONObject(result);
// update UI with the results of the network call here
}
}.execute(aUrl);
this is especially important for network IO, but it follows for disk IO as well. take a look at AsyncTask for details. the interface for AsyncTask is a little obtuse IMHO.
there's nothing special about AsyncTask, it's wraps a pattern around creating a thread and updating the user interface based on the results. in the old days, we used to do it like this,
new Thread(new Runnable() {
#Override
public void run() {
// do network operation
runOnUiThread(new Runnable() {
#Override
public void run() {
// update UI thread here
}
});
}
}}.start();
Android is telling you that you shouldn't be doing network operations on the UI thread. It doesn't want you to block the thread, and for good reasons.
Try using an AsyncTask instead. Put your HTTP request code in the doInBackground() method and update the TextView in the onPostExecute() method.
Keep in mind that you CANNOT access the UI thread from the doInBackground() method.