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java.net.ConnectException: Failed to connect to /10.191.20.97:8080

I have connect java REST on local my computer(10.191.20.97:8080) I am making a android login app that is connecting to Java server. from browser i have successful connection with server but with android studio is somethings wrong:
I/System.out: port:8080
W/System.err: java.net.ConnectException: Failed to connect to /10.191.20.97:8080
W/System.err: at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:143)
at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
W/System.err: at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:299)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:237)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
W/System.err: at com.hpi.android.assetmanagement.ui.updateapk.MainCheckVersion$1GetDataJSON.doInBackground(MainCheckVersion.java:358)
W/System.err: at com.hpi.android.assetmanagement.ui.updateapk.MainCheckVersion$1GetDataJSON.doInBackground(MainCheckVersion.java:334)
W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:333)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
E/Internet: => false
D/WindowClient: Add to mViews: DecorView#d78cc18[], this = android.view.WindowManagerGlobal#3577954
D/ViewRootImpl[MainCheckVersion]: hardware acceleration = true , fakeHwAccelerated = false, sRendererDisabled = false, forceHwAccelerated = false, sSystemRendererDisabled = false
I/zygote: Do full code cache collection, code=252KB, data=207KB
I/zygote: After code cache collection, code=252KB, data=176KB
D/Surface: Surface::connect(this=0x8f824000,api=1)
D/Surface: Surface::allocateBuffers(this=0x8f824000)
D/Surface: Surface::disconnect(this=0x8f823000,api=1)
D/Surface: Surface::connect(this=0x8f823000,api=1)
D/Surface: Surface::disconnect(this=0x8f823000,api=1)
D/View: [Warning] assignParent to null: this = DecorView#67cfdda[]
D/WindowClient: Remove from mViews: DecorView#67cfdda[], this = android.view.WindowManagerGlobal#3577954

Retrieve Data from multiple documents from Firestore Database

Unable to fetch a value from the Firestore database. Trying to retrieve the value of the mobile number as and when the value of flat and block matches the entry in the database. Below is the code I am using. I have also attached the issues that are registered in LogCat file. Please check and help.
public class Test extends AppCompatActivity {
Button btn;
private FirebaseFirestore firestore;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
firestore = FirebaseFirestore.getInstance();
btn = (Button) findViewById(R.id.button3);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
getmobile();
//makecall();
}
});
}
private void makecall(){
Intent intent = new Intent(Intent.ACTION_CALL_BUTTON);
intent.setData(Uri.parse("tel:9890910640"));
startActivity(intent);
}
private void getmobile() {
firestore.collection("users").get().addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
#Override
public void onSuccess(QuerySnapshot documentSnapshots) {
String a = "101";
String b = "F1A";
for(DocumentSnapshot document: documentSnapshots){
if(document.getString("flat")==a&&document.getString("block")==b){
String mobilefromdatabase = document.get("mobile").toString();
Toast.makeText(Test.this, "mobile" + mobilefromdatabase, Toast.LENGTH_LONG).show();
break;
}
}
}
});
}
}
Logcat Details
05-05 03:59:26.721 8805-8805/? E/libprocessgroup: failed to make and chown /acct/uid_10058: Read-only file system
05-05 03:59:26.721 8805-8805/? W/Zygote: createProcessGroup failed, kernel missing CONFIG_CGROUP_CPUACCT?
05-05 03:59:26.722 8805-8805/? I/art: Not late-enabling -Xcheck:jni (already on)
05-05 03:59:26.770 8805-8805/com.example.myrwaapp I/MultiDex: VM with version 2.1.0 has multidex support
05-05 03:59:26.770 8805-8805/com.example.myrwaapp I/MultiDex: Installing application
05-05 03:59:26.770 8805-8805/com.example.myrwaapp I/MultiDex: VM has multidex support, MultiDex support library is disabled.
05-05 03:59:26.842 8805-8805/com.example.myrwaapp V/FA: Registered activity lifecycle callback
05-05 03:59:26.857 8805-8831/com.example.myrwaapp W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
05-05 03:59:26.861 8805-8805/com.example.myrwaapp I/FirebaseInitProvider: FirebaseApp initialization successful
05-05 03:59:26.907 8805-8834/com.example.myrwaapp W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
05-05 03:59:26.925 8805-8834/com.example.myrwaapp I/FirebaseAuth: [FirebaseAuth:] Preparing to create service connection to gms implementation
05-05 03:59:26.986 8805-8805/com.example.myrwaapp W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter androidx.vectordrawable.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
05-05 03:59:27.010 8805-8805/com.example.myrwaapp V/FA: onActivityCreated
05-05 03:59:27.047 8805-8805/com.example.myrwaapp I/art: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>
05-05 03:59:27.047 8805-8805/com.example.myrwaapp I/art: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>
05-05 03:59:27.048 8805-8830/com.example.myrwaapp V/FA: App measurement collection enabled
05-05 03:59:27.049 8805-8830/com.example.myrwaapp V/FA: App measurement enabled for app package, google app id: com.example.myrwaapp, 1:649640616763:android:9025242f82dd4767798d1e
05-05 03:59:27.052 8805-8830/com.example.myrwaapp I/FA: App measurement initialized, version: 21028
05-05 03:59:27.052 8805-8830/com.example.myrwaapp I/FA: To enable debug logging run: adb shell setprop log.tag.FA VERBOSE
05-05 03:59:27.052 8805-8830/com.example.myrwaapp I/FA: To enable faster debug mode event logging run:
adb shell setprop debug.firebase.analytics.app com.example.myrwaapp
05-05 03:59:27.052 8805-8830/com.example.myrwaapp D/FA: Debug-level message logging enabled
05-05 03:59:27.077 8805-8830/com.example.myrwaapp V/FA: Connecting to remote service
05-05 03:59:27.089 8805-8830/com.example.myrwaapp V/FA: Connection attempt already in progress
05-05 03:59:27.143 8805-8830/com.example.myrwaapp V/FA: Activity resumed, time: 8622127
05-05 03:59:27.145 8805-8830/com.example.myrwaapp I/FA: Tag Manager is not found and thus will not be used
05-05 03:59:27.151 8805-8838/com.example.myrwaapp D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
05-05 03:59:27.154 8805-8805/com.example.myrwaapp D/Atlas: Validating map...
05-05 03:59:27.159 8805-8830/com.example.myrwaapp V/FA: Connection attempt already in progress
05-05 03:59:27.159 8805-8830/com.example.myrwaapp V/FA: Connection attempt already in progress
05-05 03:59:27.188 8805-8838/com.example.myrwaapp I/OpenGLRenderer: Initialized EGL, version 1.4
05-05 03:59:27.188 8805-8838/com.example.myrwaapp W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
05-05 03:59:27.215 8805-8838/com.example.myrwaapp D/EGL_emulation: eglCreateContext: 0xa2003100: maj 2 min 0 rcv 2
05-05 03:59:27.240 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:27.243 8805-8838/com.example.myrwaapp D/OpenGLRenderer: Enabling debug mode 0
05-05 03:59:27.294 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:27.738 8805-8830/com.example.myrwaapp D/FA: Connected to remote service
05-05 03:59:27.738 8805-8830/com.example.myrwaapp V/FA: Processing queued up service tasks: 4
05-05 03:59:32.795 8805-8830/com.example.myrwaapp V/FA: Inactivity, disconnecting from the service
05-05 03:59:38.884 8805-8830/com.example.myrwaapp V/FA: Recording user engagement, ms: 11740
05-05 03:59:38.886 8805-8830/com.example.myrwaapp V/FA: Connecting to remote service
05-05 03:59:38.892 8805-8830/com.example.myrwaapp V/FA: Activity paused, time: 8633867
05-05 03:59:38.894 8805-8805/com.example.myrwaapp V/FA: onActivityCreated
05-05 03:59:38.913 8805-8830/com.example.myrwaapp V/FA: Connection attempt already in progress
05-05 03:59:38.913 8805-8830/com.example.myrwaapp V/FA: Activity resumed, time: 8633895
05-05 03:59:38.926 8805-8830/com.example.myrwaapp V/FA: Connection attempt already in progress
05-05 03:59:38.926 8805-8830/com.example.myrwaapp V/FA: Connection attempt already in progress
05-05 03:59:38.993 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:39.034 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:39.051 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:39.177 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:39.222 8805-8830/com.example.myrwaapp D/FA: Connected to remote service
05-05 03:59:39.222 8805-8830/com.example.myrwaapp V/FA: Processing queued up service tasks: 4
05-05 03:59:39.224 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:39.335 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:44.247 8805-8830/com.example.myrwaapp V/FA: Inactivity, disconnecting from the service
05-05 03:59:48.704 8805-8838/com.example.myrwaapp D/EGL_emulation: eglMakeCurrent: 0xa2003100: ver 2 0 (tinfo 0xb4233e90)
05-05 03:59:48.871 8805-8849/com.example.myrwaapp W/DynamiteModule: Local module descriptor class for providerinstaller not found.
05-05 03:59:48.877 8805-8849/com.example.myrwaapp I/DynamiteModule: Considering local module providerinstaller:0 and remote module providerinstaller:0
05-05 03:59:48.877 8805-8849/com.example.myrwaapp W/ProviderInstaller: Failed to load providerinstaller module: No acceptable module found. Local version is 0 and remote version is 0.
05-05 03:59:48.881 8805-8849/com.example.myrwaapp W/ResourcesManager: Asset path '/system/framework/com.android.media.remotedisplay.jar' does not exist or contains no resources.
05-05 03:59:48.881 8805-8849/com.example.myrwaapp W/ResourcesManager: Asset path '/system/framework/com.android.location.provider.jar' does not exist or contains no resources.
05-05 03:59:48.942 8805-8849/com.example.myrwaapp W/linker: libconscrypt_gmscore_jni.so: unused DT entry: type 0x6ffffffe arg 0x13dc
05-05 03:59:48.942 8805-8849/com.example.myrwaapp W/linker: libconscrypt_gmscore_jni.so: unused DT entry: type 0x6fffffff arg 0x2
05-05 03:59:48.948 8805-8849/com.example.myrwaapp V/NativeCrypto: Registering com/google/android/gms/org/conscrypt/NativeCrypto's 284 native methods...
05-05 03:59:48.963 8805-8820/com.example.myrwaapp I/art: Background sticky concurrent mark sweep GC freed 976(49KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 8MB/8MB, paused 5.861ms total 31.265ms
05-05 03:59:48.992 8805-8849/com.example.myrwaapp I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.org.conscrypt.Java7ExtendedSSLSession>
05-05 03:59:48.992 8805-8849/com.example.myrwaapp I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.org.conscrypt.Java7ExtendedSSLSession>
05-05 03:59:48.992 8805-8849/com.example.myrwaapp I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.org.conscrypt.Java8ExtendedSSLSession>
05-05 03:59:48.992 8805-8849/com.example.myrwaapp I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.org.conscrypt.Java8ExtendedSSLSession>
05-05 03:59:49.002 8805-8849/com.example.myrwaapp I/ProviderInstaller: Installed default security provider GmsCore_OpenSSL

First of all, String comparison in Java, should not be performed using == operator, as it will always compare the address of the objects from the memory and not the actual values. String comparison should be done using equals() method.
Moreover, if you need an AND operation, you should not get all documents that exist within the users collection and make the comparison on the client. For that, you should use a query that looks exactly like this:
String a = "101";
String b = "F1A";
FirebaseFirestore rootRef = FirebaseFirestore.getInstance();
CollectionReference usersRef = rootRef.collection("users");
Query query = usersRef.whereEqualTo("flat", a).whereEqualTo("block", b);
query.get().addOnSuccessListener(/* ... */);
In this way, you are going to get only the documents where the flat property holds the value of 101 AND the value of block holds F1A. As I think that only one apartment has that constraint, you'll be billed with only one read operation.

App crash on Facebook login using facebook4 plugin for phonegap on android

I have a phonegap hybrid app with Facebook connect plugin. First time when I login then the FB login works but after I logout and then again try to login via Facebook then the app crashes with the following Logcat results :
Plugin URL :
https://github.com/jeduan/cordova-plugin-facebook4
06-18 21:31:50.071 3129-3219/? E/Surface: getSlotFromBufferLocked: unknown buffer: 0x9b2370a0
06-18 21:31:50.096 3129-3129/? I/Choreographer: Skipped 39 frames! The application may be doing too much work on its main thread.
06-18 21:31:50.104 3129-3234/? D/EGL_emulation: eglMakeCurrent: 0x9e677300: ver 2 0 (tinfo 0xaa366e80)
06-18 21:31:50.356 3129-3129/? D/CordovaActivity: Incoming Result. Request code = 64206
06-18 21:31:50.356 3129-3129/? D/CordovaInterfaceImpl: Sending activity result to plugin
06-18 21:31:50.356 3129-3129/? D/ConnectPlugin: activity result in plugin: requestCode(64206), resultCode(-1)
06-18 21:31:50.372 3129-3129/? D/com.facebook.FacebookSdk: getGraphApiVersion: v3.0
06-18 21:31:50.372 3129-3129/? D/com.facebook.FacebookSdk: getGraphApiVersion: v3.0
06-18 21:31:50.378 3129-3129/? D/CordovaActivity: Resumed the activity.
06-18 21:31:50.379 3129-3129/? W/com.facebook.appevents.AppEventsLogger: activateApp events are being logged automatically. There's no need to call activateApp explicitly, this is safe to remove.
06-18 21:31:50.551 3129-3219/? E/Surface: getSlotFromBufferLocked: unknown buffer: 0x98eed520
06-18 21:31:51.043 3129-3129/? D/AndroidRuntime: Shutting down VM
--------- beginning of crash
06-18 21:31:51.044 3129-3129/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.sqlchild.app1, PID: 3129
java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.indexOf(int)' on a null object reference
at libcore.net.UriCodec.decode(UriCodec.java:153)
at java.net.URLDecoder.decode(URLDecoder.java:60)
at org.apache.cordova.facebook.ConnectPlugin.makeGraphCall(ConnectPlugin.java:751)
at org.apache.cordova.facebook.ConnectPlugin.access$200(ConnectPlugin.java:55)
at org.apache.cordova.facebook.ConnectPlugin$2$1.onCompleted(ConnectPlugin.java:111)
at com.facebook.GraphRequest$1.onCompleted(GraphRequest.java:301)
at com.facebook.GraphRequest$5.run(GraphRequest.java:1380)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
06-18 21:31:51.052 1667-2063/? W/ActivityManager: Force finishing activity com.sqlchild.app1/.MainActivity
06-18 21:31:51.067 1259-1321/? D/gralloc_ranchu: gralloc_alloc: Creating ashmem region of size 589824
[ 06-18 21:31:51.097 1667: 2063 D/ ]
HostConnection::get() New Host Connection established 0x9aa0cc00, tid 2063
[ 06-18 21:31:51.099 1667: 2063 W/ ]
Unrecognized GLES max version string in extensions: ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_dma_v1
06-18 21:31:51.113 1259-1259/? E/EGL_emulation: tid 1259: eglCreateSyncKHR(1881): error 0x3004 (EGL_BAD_ATTRIBUTE)
06-18 21:31:51.199 1667-1667/? W/art: Long monitor contention event with owner method=void com.android.server.am.ActivityManagerService.crashApplication(com.android.server.am.ProcessRecord, android.app.ApplicationErrorReport$CrashInfo) from ActivityManagerService.java:12502 waiters=0 for 133ms
06-18 21:31:51.289 1667-1677/? I/art: Background partial concurrent mark sweep GC freed 36018(2MB) AllocSpace objects, 1(20KB) LOS objects, 33% free, 7MB/11MB, paused 3.358ms total 105.317ms
06-18 21:31:51.381 1667-1729/? I/OpenGLRenderer: Initialized EGL, version 1.4
06-18 21:31:51.390 1667-1729/? D/EGL_emulation: eglCreateContext: 0xa07fc120: maj 2 min 0 rcv 2
06-18 21:31:51.414 1667-1729/? D/EGL_emulation: eglMakeCurrent: 0xa07fc120: ver 2 0 (tinfo 0xa0ea42f0)
06-18 21:31:51.484 1667-1729/? D/EGL_emulation: eglMakeCurrent: 0xa07fc120: ver 2 0 (tinfo 0xa0ea42f0)
06-18 21:31:51.691 1667-3205/? I/AccountManagerService: getTypesVisibleToCaller: isPermitted? true
06-18 21:31:51.698 1667-1683/? W/ActivityManager: Activity pause timeout for ActivityRecord{21fdafb u0 com.sqlchild.app1/.MainActivity t8 f}
06-18 21:31:51.877 1667-3206/? W/art: Long monitor contention event with owner method=void com.android.server.am.ActivityStack$ActivityStackHandler.handleMessage(android.os.Message) from ActivityStack.java:283 waiters=0 for 175ms
06-18 21:31:51.896 1667-1683/? I/ActivityManager: Killing 2545:com.android.keychain/1000 (adj 15): empty #17
06-18 21:31:52.070 2029-2239/? D/EGL_emulation: eglMakeCurrent: 0xae594600: ver 2 0 (tinfo 0xae5924b0)
06-18 21:31:59.062 3129-3129/? I/Process: Sending signal. PID: 3129 SIG: 9
06-18 21:31:59.075 1667-1729/? D/EGL_emulation: eglMakeCurrent: 0xa07fc120: ver 2 0 (tinfo 0xa0ea42f0)
06-18 21:31:59.079 1667-1729/? E/Surface: getSlotFromBufferLocked: unknown buffer: 0x9e8d1360
06-18 21:31:59.128 1667-3206/? E/JavaBinder: !!! FAILED BINDER TRANSACTION !!! (parcel size = 104)
06-18 21:31:59.130 1667-1721/? W/InputDispatcher: channel '7f56d84 com.sqlchild.app1/com.sqlchild.app1.MainActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
06-18 21:31:59.130 1667-1721/? E/InputDispatcher: channel '7f56d84 com.sqlchild.app1/com.sqlchild.app1.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
06-18 21:31:59.129 1667-3206/? W/InputMethodManagerService: Got RemoteException sending setActive(false) notification to pid 3129 uid 10061
06-18 21:31:59.132 1667-1721/? W/InputDispatcher: channel 'e76402c com.sqlchild.app1/com.facebook.FacebookActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
06-18 21:31:59.133 1667-1721/? E/InputDispatcher: channel 'e76402c com.sqlchild.app1/com.facebook.FacebookActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
06-18 21:31:59.153 1667-3206/? E/JavaBinder: !!! FAILED BINDER TRANSACTION !!! (parcel size = 104)
06-18 21:31:59.168 1667-1680/? I/WindowState: WIN DEATH: Window{e76402c u0 com.sqlchild.app1/com.facebook.FacebookActivity}
06-18 21:31:59.169 1667-1680/? W/InputDispatcher: Attempted to unregister already unregistered input channel 'e76402c com.sqlchild.app1/com.facebook.FacebookActivity (server)'
06-18 21:31:59.174 1667-2280/? D/GraphicsStats: Buffer count: 3
06-18 21:31:59.207 1667-1681/? I/ActivityManager: Process com.sqlchild.app1 (pid 3129) has died
06-18 21:31:59.257 1667-3110/? I/WindowState: WIN DEATH: Window{7f56d84 u0 com.sqlchild.app1/com.sqlchild.app1.MainActivity}
06-18 21:31:59.257 1667-3110/? W/InputDispatcher: Attempted to unregister already unregistered input channel '7f56d84 com.sqlchild.app1/com.sqlchild.app1.MainActivity (server)'

Android app keeps crashing on emulator and device [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 3 years ago.
I am executing a very basic task of opening another activity using a button. The code seems to be error-free but the app crashes without even showing the main activity. This happens on both the emulator as well as my device.
When the app has no function, i.e. when the app has just buttons which do nothing, the app works fine. But if I try to make them do anything(intent to open another activity, or to play with their visibility) the app crashes.
The logcat is as follows:
11-12 13:55:56.627 2962-2962/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 0 <<<<<<
11-12 13:55:56.628 2962-2962/? D/AndroidRuntime: CheckJNI is ON
11-12 13:55:56.672 2962-2962/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat
11-12 13:55:56.754 2962-2962/? E/memtrack: Couldn't load memtrack module (No such file or directory)
11-12 13:55:56.754 2962-2962/? E/android.os.Debug: failed to load memtrack module: -2
11-12 13:55:56.755 2962-2962/? I/Radio-JNI: register_android_hardware_Radio DONE
11-12 13:55:56.761 2962-2962/? D/AndroidRuntime: Calling main entry com.android.commands.pm.Pm
11-12 13:55:56.772 2962-2962/? I/art: System.exit called, status: 0
11-12 13:55:56.772 2962-2962/? I/AndroidRuntime: VM exiting with result code 0.
11-12 13:55:57.068 2977-2977/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 0 <<<<<<
11-12 13:55:57.069 2977-2977/? D/AndroidRuntime: CheckJNI is ON
11-12 13:55:57.129 2977-2977/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat
11-12 13:55:57.199 2977-2977/? E/memtrack: Couldn't load memtrack module (No such file or directory)
11-12 13:55:57.199 2977-2977/? E/android.os.Debug: failed to load memtrack module: -2
11-12 13:55:57.200 2977-2977/? I/Radio-JNI: register_android_hardware_Radio DONE
11-12 13:55:57.205 2977-2977/? D/AndroidRuntime: Calling main entry com.android.commands.pm.Pm
11-12 13:55:57.216 2977-2977/? I/art: System.exit called, status: 0
11-12 13:55:57.220 2977-2977/? I/AndroidRuntime: VM exiting with result code 0.
11-12 13:55:59.484 2987-2987/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 0 <<<<<<
11-12 13:55:59.487 2987-2987/? D/AndroidRuntime: CheckJNI is ON
11-12 13:55:59.522 2987-2987/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat
11-12 13:55:59.602 2987-2987/? E/memtrack: Couldn't load memtrack module (No such file or directory)
11-12 13:55:59.602 2987-2987/? E/android.os.Debug: failed to load memtrack module: -2
11-12 13:55:59.603 2987-2987/? I/Radio-JNI: register_android_hardware_Radio DONE
11-12 13:55:59.615 2987-2987/? D/AndroidRuntime: Calling main entry com.android.commands.wm.Wm
11-12 13:55:59.643 2987-2987/? D/AndroidRuntime: Shutting down VM
11-12 13:56:01.407 2999-2999/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 0 <<<<<<
11-12 13:56:01.408 2999-2999/? D/AndroidRuntime: CheckJNI is ON
11-12 13:56:01.465 2999-2999/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat
11-12 13:56:01.542 2999-2999/? E/memtrack: Couldn't load memtrack module (No such file or directory)
11-12 13:56:01.542 2999-2999/? E/android.os.Debug: failed to load memtrack module: -2
11-12 13:56:01.543 2999-2999/? I/Radio-JNI: register_android_hardware_Radio DONE
11-12 13:56:01.553 2999-2999/? D/AndroidRuntime: Calling main entry com.android.commands.am.Am
--------- beginning of system
11-12 13:56:01.562 1585-1920/system_process I/ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.dell.crash/.MainActivity} from uid 0 on display 0
11-12 13:56:01.579 2147-2341/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_close com.google.android.apps.gsa.speech.audio.u#20f33e2
11-12 13:56:01.605 3007-3007/? I/art: Not late-enabling -Xcheck:jni (already on)
11-12 13:56:01.606 2147-2347/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Stopping hotword detection.
11-12 13:56:01.606 2147-2699/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Hotword detection finished
11-12 13:56:01.610 1585-1598/system_process I/ActivityManager: Start proc 3007:com.example.dell.crash/u0a64 for activity com.example.dell.crash/.MainActivity
11-12 13:56:01.604 2999-2999/? D/AndroidRuntime: Shutting down VM
[ 11-12 13:56:01.697 1585: 1608 D/ ]
HostConnection::get() New Host Connection established 0x7f8480e69e40, tid 1608
11-12 13:56:01.728 3007-3007/com.example.dell.crash W/System: ClassLoader referenced unknown path: /data/app/com.example.dell.crash-1/lib/x86_64
11-12 13:56:01.729 3007-3007/com.example.dell.crash I/InstantRun: Instant Run Runtime started. Android package is com.example.dell.crash, real application class is null.
11-12 13:56:02.906 1891-2316/com.google.android.googlequicksearchbox E/Surface: getSlotFromBufferLocked: unknown buffer: 0xe9e5e990
11-12 13:56:03.510 3007-3007/com.example.dell.crash W/System: ClassLoader referenced unknown path: /data/app/com.example.dell.crash-1/lib/x86_64
11-12 13:56:03.707 3007-3007/com.example.dell.crash D/AndroidRuntime: Shutting down VM
--------- beginning of crash
11-12 13:56:03.707 3007-3007/com.example.dell.crash E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.dell.crash, PID: 3007
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.dell.crash/com.example.dell.crash.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:116)
at android.support.v7.app.AppCompatDelegateImplV9.<init>(AppCompatDelegateImplV9.java:147)
at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:27)
at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:50)
at android.support.v7.app.AppCompatDelegateImplV23.<init>(AppCompatDelegateImplV23.java:29)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:199)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:181)
at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:521)
at android.support.v7.app.AppCompatActivity.findViewById(AppCompatActivity.java:190)
at com.example.dell.crash.MainActivity.<init>(MainActivity.java:10)
at java.lang.Class.newInstance(Native Method)
at android.app.Instrumentation.newActivity(Instrumentation.java:1067)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2317)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
at android.app.ActivityThread.-wrap11(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
11-12 13:56:03.708 1585-2055/system_process W/ActivityManager: Force finishing activity com.example.dell.crash/.MainActivity
11-12 13:56:04.016 1585-2055/system_process I/WindowManager: Screenshot max retries 4 of Token{9795bf6 ActivityRecord{989c091 u0 com.example.dell.crash/.MainActivity t51 f}} appWin=Window{a3bf3ce u0 Starting com.example.dell.crash} drawState=4
11-12 13:56:04.116 1585-2485/system_process I/OpenGLRenderer: Initialized EGL, version 1.4
11-12 13:56:04.518 1585-1601/system_process W/ActivityManager: Activity pause timeout for ActivityRecord{989c091 u0 com.example.dell.crash/.MainActivity t51 f}
11-12 13:56:04.550 2328-2336/com.google.android.gms W/SQLiteConnectionPool: A SQLiteConnection object for database '/data/user/0/com.google.android.gms/databases/networkstatistics.sqlite' was leaked! Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
11-12 13:56:04.550 2328-2336/com.google.android.gms W/SQLiteConnectionPool: A SQLiteConnection object for database '/data/user/0/com.google.android.gms/databases/metrics.db' was leaked! Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
11-12 13:56:04.551 2328-2336/com.google.android.gms W/SQLiteConnectionPool: A SQLiteConnection object for database '/data/user/0/com.google.android.gms/databases/help_responses.db' was leaked! Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
11-12 13:56:04.572 2328-2336/com.google.android.gms W/SQLiteConnectionPool: A SQLiteConnection object for database '/data/user/0/com.google.android.gms/databases/auto_complete_suggestions.db' was leaked! Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
11-12 13:56:04.860 1585-1602/system_process I/Choreographer: Skipped 35 frames! The application may be doing too much work on its main thread.
11-12 13:56:04.925 2147-3076/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Starting hotword detection.
11-12 13:56:04.943 2147-3078/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_starting com.google.android.apps.gsa.speech.audio.u#76753fd
11-12 13:56:04.955 1585-1599/system_process I/ActivityManager: Killing 2527:com.android.settings/1000 (adj 15): empty #17
11-12 13:56:04.965 1202-2042/? E/audio_hw_generic: Error opening input stream format 1, channel_mask 0010, sample_rate 16000
11-12 13:56:04.969 1202-3080/? I/AudioFlinger: AudioFlinger's thread 0xf3b80000 ready to run
11-12 13:56:04.988 2147-3078/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_started com.google.android.apps.gsa.speech.audio.u#76753fd
11-12 13:56:04.991 2147-2341/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_close com.google.android.apps.gsa.speech.audio.u#76753fd
11-12 13:56:04.992 2147-3078/com.google.android.googlequicksearchbox:search E/AudioRecord-JNI: Error -4 during AudioRecord native read
11-12 13:56:05.009 2147-2347/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Stopping hotword detection.
11-12 13:56:05.010 2147-3076/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Hotword detection finished
11-12 13:56:05.140 1585-1599/system_process I/ActivityManager: Killing 2649:com.android.dialer/u0a4 (adj 15): empty #17
11-12 13:56:05.395 1891-2316/com.google.android.googlequicksearchbox W/OpenGLRenderer: Incorrectly called buildLayer on View: em, destroying layer...
11-12 13:56:05.447 1585-1608/system_process D/gralloc_ranchu: gralloc_unregister_buffer: exiting HostConnection (is buffer-handling thread)
11-12 13:56:05.466 2328-2472/com.google.android.gms I/Icing: Usage reports 0 indexed 0 rejected 0 imm upload true
11-12 13:56:05.486 2328-2504/com.google.android.gms I/Icing: Usage reports 0 indexed 0 rejected 0 imm upload true
11-12 13:56:05.499 1585-1920/system_process I/ActivityManager: Killing 2670:com.android.managedprovisioning/u0a8 (adj 15): empty #17
11-12 13:56:15.034 1585-1601/system_process W/ActivityManager: Activity destroy timeout for ActivityRecord{989c091 u0 com.example.dell.crash/.MainActivity t51 f}
11-12 13:56:15.075 2147-3230/com.google.android.googlequicksearchbox:search W/CronetSyncConnectionRcs: Upload content type not set.
11-12 13:56:17.062 3007-3007/com.example.dell.crash I/Process: Sending signal. PID: 3007 SIG: 9
11-12 13:56:17.093 1585-2485/system_process E/Surface: getSlotFromBufferLocked: unknown buffer: 0x7f849297e160
11-12 13:56:17.101 1585-2485/system_process D/OpenGLRenderer: endAllStagingAnimators on 0x7f84835bfc00 (RippleDrawable) with handle 0x7f847ee9ee60
11-12 13:56:17.131 1585-1920/system_process W/InputMethodManagerService: Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy#9d97b24 attribute=null, token = android.os.BinderProxy#32922a9
11-12 13:56:17.165 1585-1920/system_process I/ActivityManager: Process com.example.dell.crash (pid 3007) has died
11-12 13:56:17.367 1585-1608/system_process W/AppOps: Finishing op nesting under-run: uid 1000 pkg android code 24 time=0 duration=0 nesting=0
11-12 13:56:17.409 2147-3268/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Starting hotword detection.
11-12 13:56:17.413 2147-3269/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_starting com.google.android.apps.gsa.speech.audio.u#898b349
11-12 13:56:17.423 1202-1546/? E/audio_hw_generic: Error opening input stream format 1, channel_mask 0010, sample_rate 16000
11-12 13:56:17.444 1202-3273/? I/AudioFlinger: AudioFlinger's thread 0xf3b80000 ready to run
11-12 13:56:17.449 2147-2157/com.google.android.googlequicksearchbox:search I/art: Background sticky concurrent mark sweep GC freed 1466(93KB) AllocSpace objects, 0(0B) LOS objects, 9% free, 4MB/4MB, paused 25.294ms total 31.038ms
11-12 13:56:17.456 2147-3269/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_started com.google.android.apps.gsa.speech.audio.u#898b349
11-12 13:56:17.493 2147-2147/com.google.android.googlequicksearchbox:search I/HotwordWorker: onReady
11-12 13:56:17.504 2328-3272/com.google.android.gms W/IcingInternalCorpora: getNumBytesRead when not calculated.
11-12 13:56:17.564 2328-2472/com.google.android.gms I/Icing: Usage reports 0 indexed 0 rejected 0 imm upload true
11-12 13:56:17.571 2328-2472/com.google.android.gms I/Icing: Usage reports 0 indexed 0 rejected 0 imm upload true
11-12 13:56:18.155 1202-1544/? W/AudioFlinger: write blocked for 408 msecs, 4 delayed writes, thread 0xf4500000
The .java file has the following block:
public class MainActivity extends AppCompatActivity {
Button btn1 = (Button) findViewById(R.id.button);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, Main2Activity.class));
}
});
}
}
The XML file is as follows:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.dell.crash.MainActivity">
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="102dp"
android:id="#+id/button" />
</RelativeLayout>
I am using Android Studio 2.2.2

After
setContentView(R.layout.activity_main);
Add call like this
Button button = (Button) findViewById(R.id.button);
issue was you didn't created reference for button.

put Button btn1 = (Button) findViewById(R.id.button); in oncreate method.
The reason is you try add an event to your button but didn't show the reference id inside oncreate from where every app start its activity.

You should always instantiate button inside onCreate(). So your code should be like
public class MainActivity extends AppCompatActivity {
Button btn1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button) findViewById(R.id.button);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, Main2Activity.class));
}
});
}
}

If you init your btn1 variable in declarations section, it will run before the setContextView(...) function call. Put btn1 initialization after setContextView(...)!
public class MainActivity extends AppCompatActivity {
private Button btn1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = Button.class.cast(findViewById(R.id.button));
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, Main2Activity.class));
}
});
}
}

Android IOException is null, Throwing NullPointerException

I'm working on an application for Android and I'm having an AsyncTask connect to a server through a client socket in the doInBackground method.
All variables that are being used have been set and I have checked in real time that they are valid before being used. The weird thing is that after trying to create the socket with the designated host/port, it immediately throws an IOException, which in itself is not a problem :P but the value ex is null. I have never seen anything like this and I found some similar cases on google, but none of them yielded a solution.
The code that is throwing the exception,as well as the catch block:
#Override
protected Socket doInBackground(Void... params) {
Socket sock = null;
try {
sock = new Socket("10.0.0.86", 44444);
} catch (UnknownHostException ex) {
ex.printStackTrace();
} catch(IOException ex) {
ex.printStackTrace();
}
return sock;
}
The rest of the code is nothing of help, it's just some getter/setters. Here's the log from the android device:
07-28 03:30:23.438
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
Sending WAIT chunk 07-28 03:30:23.438
9514-9520/com.TestApplication.VEStudio.TestApplication I/dalvikvm﹕
Debugger is active 07-28 03:30:23.438
9514-9514/com.TestApplication.VEStudio.TestApplication
W/ActivityThread﹕ Application
com.TestApplication.VEStudio.TestApplication is waiting for the
debugger on port 8100... 07-28 03:30:23.638
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
Debugger has connected 07-28 03:30:23.638
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:23.838
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:24.038
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:24.238
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:24.438
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:24.638
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:24.838
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
waiting for debugger to settle... 07-28 03:30:25.038
9514-9514/com.TestApplication.VEStudio.TestApplication I/System.out﹕
debugger has settled (1482) 07-28 03:30:25.238
9514-9514/com.TestApplication.VEStudio.TestApplication I/Adreno-EGL﹕
: EGL 1.4 QUALCOMM build: ()
OpenGL ES Shader Compiler Version: E031.24.00.06
Build Date: 02/12/14 Wed
Local Branch: au090
Remote Branch:
Local Patches:
Reconstruct Branch: 07-28 03:30:25.268 9514-9514/com.TestApplication.VEStudio.TestApplication
D/OpenGLRenderer﹕ Enabling debug mode 0 07-28 03:30:25.308
9514-9514/com.TestApplication.VEStudio.TestApplication
D/OpenGLRenderer﹕ GL error from OpenGLRenderer: 0x502 07-28
03:30:25.308 9514-9514/com.TestApplication.VEStudio.TestApplication
E/OpenGLRenderer﹕ GL_INVALID_OPERATION 07-28 03:30:25.318
9514-9514/com.TestApplication.VEStudio.TestApplication
I/ActivityManager﹕ Timeline: Activity_idle id:
android.os.BinderProxy#43682588 time:268397923 07-28 03:30:26.468
9514-9514/com.TestApplication.VEStudio.TestApplication
I/ActivityManager﹕ Timeline: Activity_idle id:
android.os.BinderProxy#43682588 time:268399075 07-28 03:30:29.908
9514-9514/com.TestApplication.VEStudio.TestApplication
I/Choreographer﹕ Skipped 150 frames! The application may be doing too
much work on its main thread. 07-28 03:30:33.538
9514-9913/com.TestApplication.VEStudio.TestApplication W/dalvikvm﹕
threadid=15: thread exiting with uncaught exception (group=0x41e98d88)
07-28 03:30:33.578
9514-9913/com.TestApplication.VEStudio.TestApplication
E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #3
Process: com.TestApplication.VEStudio.TestApplication, PID: 9514
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:300)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: java.lang.NullPointerException
at com.TestApplication.VEStudio.TestApplication.Networking.doInBackground(Networking.java:51)
at com.TestApplication.VEStudio.TestApplication.Networking.doInBackground(Networking.java:12)
at android.os.AsyncTask$2.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:841) 07-28 03:35:33.628 9514-9913/com.TestApplication.VEStudio.TestApplication
I/Process﹕ Sending signal. PID: 9514 SIG: 9
Any help at all with this issue would be greatly appreciated, and hopefully someone in the future will need the same intel.