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Cannot capture image in the second time - Android

im using kevalpatel2106's android hidden camera library.
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.exampleapp, PID: 10608
java.lang.RuntimeException: takePicture failed
at android.hardware.Camera.native_takePicture(Native Method)
at android.hardware.Camera.takePicture(Camera.java:1865)
at android.hardware.Camera.takePicture(Camera.java:1806)
at com.androidhiddencamera.CameraPreview.takePictureInternal(CameraPreview.java:196)
at com.androidhiddencamera.HiddenCameraActivity.takePicture(HiddenCameraActivity.java:92)
at com.example.exampleapp.MainActivity.lambda$onCreate$3$MainActivity(MainActivity.java:152)
at com.example.exampleapp.MainActivity$$ExternalSyntheticLambda4.run(Unknown Source:2)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7888)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:981)
when the application instance taking picture the first time it works fine, but in the second time it throws me this error.
I'm using LGE LM-K520 device android 11.
this is the code:
findViewById(R.id.pic).setOnClickListener((a) -> takePicture());
this is my config:
mCameraConfig = new CameraConfig()
.getBuilder(MainActivity.this)
.setCameraFacing(CameraFacing.REAR_FACING_CAMERA)
.setCameraResolution(CameraResolution.HIGH_RESOLUTION)
.setImageFormat(CameraImageFormat.FORMAT_JPEG)
.setImageRotation(CameraRotation.ROTATION_90)
.build();
Thank You!!!

My Activity is getting null object exception when the app resumes after bing in the background

I have an android app that has a second module included in the app when the main activity starts an activity in the module everything is good. The problem is if you go to another app and then resume this app the activity crashes with a null object pointer. My app uses Esri ArcGIS runtime SDK. I have a MapView open in the activity when the crash occurs. I don't have any problem with an open map in the MainActivity and the app goes to the background then back to the current app.
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.thevillages.myfirstapp, PID: 23267
java.lang.RuntimeException: Unable to resume activity {com.thevillages.myfirstapp/com.thevillages.maplib.MapNavActivity}: com.esri.arcgisruntime.ArcGISRuntimeException: Null pointer.: object cannot be null.
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4205)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4237)
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:52)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: com.esri.arcgisruntime.ArcGISRuntimeException: Null pointer.: object cannot be null.
at com.esri.arcgisruntime.internal.jni.CoreGeoView.nativeResume(Native Method)
at com.esri.arcgisruntime.internal.jni.CoreGeoView.b(SourceFile:5)
at com.esri.arcgisruntime.a.i.f.g.d(SourceFile:3)
at com.esri.arcgisruntime.mapping.view.GeoView$RenderingThread.resume(SourceFile:4)
at com.esri.arcgisruntime.mapping.view.MapView.resume(SourceFile:1)
at com.thevillages.maplib.MapNavActivity.onResume(MapNavActivity.java:816)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1446)
at android.app.Activity.performResume(Activity.java:7939)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4195)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4237) 
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:52) 
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016) 
at android.os.Handler.dispatchMessage(Handler.java:107) 
at android.os.Looper.loop(Looper.java:214) 
at android.app.ActivityThread.main(ActivityThread.java:7356) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

I systematically went through my onCreate() method and added each piece of the code to find where the problem was. I found some code that was suspicious and I could not recall why I added the code. With the code removed the app works fine.

How to add Internet Connection Problem Dialog in android app on Async Task

I want to add Internet Connection Problem Dialog in my Async Task subclass. I tried many methods but the same error happened when my internet not connected.
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.yasht.cricketapp, PID: 12793
java.lang.ClassCastException: java.lang.String cannot be cast to java.io.InputStream
at com.example.yasht.cricketapp.m_Rss.Downloader.onPostExecute(Downloader.java:66)
at android.os.AsyncTask.finish(AsyncTask.java:667)
at android.os.AsyncTask.-wrap1(AsyncTask.java)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Error Pointing On 66 line:
Please comment If you want any other information.

You are casting data into inputStream, if you want to create this object you should do something like : ByteArrayInputStream( data.getBytes() )
probably you should post your onExecute too to see what are you trying to do

Android Studio Weather Application Crashing

So, I have been following a YouTube tutorial for an android Weather application. The app seems to compile, however crashes whenever opened on the emulator. I'm not the most fluent programmer, however the code is understood. I can't figure out what's causing the issue though. The app is supposed to fetch weather data for the location of the hardcoded location in "MainActivity.java". The data is fetched from Yahoo! using an API.
Link for the project files: https://drive.google.com/drive/folders/0B2dQ9-JQjysVeXlqZENBZDExN0E?usp=sharing
Below is the error I get:
--------- beginning of crash
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.mattbenson.cw_2_weather, PID: 2529
java.lang.NullPointerException: Attempt to invoke virtual method 'int org.json.JSONObject.optInt(java.lang.String)' on a null object reference
at com.example.mattbenson.cw_2_weather.service.WeatherService$1.onPostExecute(WeatherService.java:81)
at com.example.mattbenson.cw_2_weather.service.WeatherService$1.onPostExecute(WeatherService.java:38)
at android.os.AsyncTask.finish(AsyncTask.java:667)
at android.os.AsyncTask.-wrap1(AsyncTask.java)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
E/Surface: queueBuffer: error queuing buffer to SurfaceTexture, -19
E/EGL_emulation: tid 2570: swapBuffers(487): error 0x300d (EGL_BAD_SURFACE)
W/OpenGLRenderer: swapBuffers encountered EGL error 12301 on 0x76990bb1c580, halting rendering...
Application terminated.
(Sorry, I am new to this site!)
Any help is greatly appreciated.

As StackTrace says the error is at Class WeatherService at line 81 int count = queryResults.optInt("Count"); because it is returning NULL.
Try using method optInt with fallback value queryResults.optInt("Count", 0);

getResources returns null

We register a broadcast receiver to receive package installment or uninstallment event.
But some users report crash reports like this:
java.lang.RuntimeException: Unable to create application com.kc.security.MoSecurityApplication: java.lang.RuntimeException: getResources is null: dir - /data/app/com.cm.mg-1.apk, srcVal-1, srcVal-2
at android.app.LoadedApk.makeApplication(LoadedApk.java:495)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:2249)
at android.app.ActivityThread.access$1600(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1201)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
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:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: getResources is null: dir - /data/app/com.cm.mg-1.apk, srcVal-1, srcVal-2
at com.kc.security.b.ab.b(UpdateManager.java:69)
at com.kc.security.b.ab.a(UpdateManager.java:112)
at com.kc.security.MoSecurityApplication.onCreate(MoSecurityApplication.java:66)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:969)
at android.app.LoadedApk.makeApplication(LoadedApk.java:492)
... 11 more
It is not easy to reappear this crash. We think a lot about this problem. We receive a
uninstall event ,then the Application context Class called it's onCreate method, we do
some initial works there , when we call getResouce(), it returns null . When look deep
inside the framework codes, we find that getReource locate resources file by sourceDir
String in ApplicationInfo, and the String is "/data/app/com.cm.mg-1.apk" > it's the original apk , and it is not exists anymore.
It maybe happens when user update our application. In some way "/data/app/com.cm.mg-1.apk" is allready deleted and replace by "/data/app/com.cm.mg-2.apk" any way, but the "sourceDir" String in ApplicationInfo is not update.
I want to know what android does when doing a updating.

Encountered a similar problem, check this out.
RuntimeException: Unable to instantiate application
I think this should answer this question, maybe because the Resources has been destroyed during this uninstall event.