Nothing happens after click image #112

ajinkya976 · 2020-02-01T12:22:50Z

Hi Everyone,

please find my project here https://drive.google.com/open?id=1pKTq0QwxuN1jy9Q1eFSQyr-TUEHFKHtQ

i am using this library in my project i am able to take picture from camera but nothing happens after that. when i click on select button after clicking image, crop part is not coming. i am getting below error.

W/System.err: java.lang.NullPointerException: Attempt to get length of null array
        at com.reminder.testapplication.PickImageFragment.clearTempImages(PickImageFragment.java:67)
        at com.reminder.testapplication.PickImageFragment.createImageFile(PickImageFragment.java:133)
        at com.reminder.testapplication.PickImageFragment.openCamera(PickImageFragment.java:117)
        at com.reminder.testapplication.PickImageFragment.handleIntentPreference(PickImageFragment.java:77)
        at com.reminder.testapplication.PickImageFragment.init(PickImageFragment.java:58)
        at com.reminder.testapplication.PickImageFragment.onCreateView(PickImageFragment.java:48)
        at android.app.Fragment.performCreateView(Fragment.java:2534)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1303)
        at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2431)
        at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2210)
        at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2166)
W/System.err:     at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2067)
        at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3057)
        at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3004)
        at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:184)
        at android.app.Activity.performCreate(Activity.java:7822)
        at android.app.Activity.performCreate(Activity.java:7804)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1318)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3349)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3513)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2109)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7682)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
D/: openCamera: isDirectoryCreated: false
V/ViewRootImpl: The specified message queue synchronization  barrier token has not been posted or has already been removed
D/DecorView: onWindowFocusChangedFromViewRoot hasFocus: true, DecorView@664c4c[ScanActivity]
W/Choreographer: Already have a pending vsync event.  There should only be one at a time.
D/OpenGLRenderer: endAllActiveAnimators on 0x729c177600 (RippleDrawable) with handle 0x72f658d060
E/ContentProviderNative: onTransact error from {P:7122;U:10040}

The text was updated successfully, but these errors were encountered:

zakblacki · 2020-02-01T12:47:03Z

Search scanlibrary in github you will find other project using the same depo working

ajinkya976 · 2020-02-02T05:38:07Z

actually projects i dont want i have imported everything properly also i saw one more issue is open with above error but no one replied to it as well

mauclores · 2020-05-09T01:31:24Z

Was this solved?

mauclores · 2020-05-09T11:16:53Z

In my case this happens only when the device is running Android 10 and the targetSdkVersion in manifest file is 29.

The issue is related to external storage directory accessibility as described in the documentation:
https://developer.android.com/reference/android/os/Environment#getExternalStorageDirectory().
The related code is in ScanConstants.java:
public final static String IMAGE_PATH = Environment .getExternalStorageDirectory().getPath() + "/scanSample";

To solve this, you can:

Set the targetSdkVersion to less than 29 (not recommended); or
Create the image file elsewhere (tested with getExternalCacheDir())

ajinkya976 · 2020-05-11T06:39:10Z

Thanks i will check this. can you please let me know how to do second option ? i am having android 10

amila4d · 2020-06-08T05:33:59Z

public class ScanConstants {

public final static String IMAGE_PATH = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath() + "/scanSample";

}

ajinkya976 · 2020-06-11T06:36:53Z

Hi,

i have tried with above solutions but i am getting below error. i am getting this error whenever i click image in camera.

E/ContentProviderNative: onTransact error from {P:32644;U:10040}

shahbikash · 2020-06-16T20:14:19Z

@ajinkya976 hey there, did you provide the permission to the installed app on your device, like going to app permissions and providing access to camera and Storage, if not do it and try again. It should work :)

ajinkya976 · 2020-06-18T06:56:55Z

@shahbikash yes i have given permission but still gets below error when i click image and nothing happens when click check button.

E/ContentProviderNative: onTransact error from {P:764;U:10040}

vamsee9 · 2020-07-09T13:10:15Z

public class ScanConstants {

public final static String IMAGE_PATH = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath() + "/scanSample";

}

where should we add this? in Utils.java or MainActivity.java ?

amila4d · 2020-07-09T13:11:59Z

Inside library. Just search class name in library project

…

On Thu, Jul 9, 2020 at 6:40 PM, 4И0И5UЯF ***@***.***> wrote: public class ScanConstants { public final static String IMAGE_PATH = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath() + "/scanSample"; } where should we add this? in Utils.java or MainActivity.java ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#112 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACC6GHNW3NLGXFMZ7C6M6BTR2W6UNANCNFSM4KOS3F4A> .

vamsee9 · 2020-07-09T13:21:06Z

Inside library. Just search class name in library project
…
On Thu, Jul 9, 2020 at 6:40 PM, 4И0И5UЯF @.***> wrote: public class ScanConstants { public final static String IMAGE_PATH = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath() + "/scanSample"; } where should we add this? in Utils.java or MainActivity.java ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#112 (comment)>, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACC6GHNW3NLGXFMZ7C6M6BTR2W6UNANCNFSM4KOS3F4A .

yeah tried, nothing happened the same being able to take a picture from the camera but nothing happens after that. when I click on the select button after clicking the image, crop part is not coming

vamsee9 · 2020-07-10T05:29:38Z

@shahbikash yes i have given permission but still gets below error when i click image and nothing happens when click check button.

E/ContentProviderNative: onTransact error from {P:764;U:10040}

Did you solve error ?

ajinkya976 · 2020-07-10T06:24:01Z

no. i am also getting same error not found any solution till now for this.

vamsee9 · 2020-07-10T06:24:49Z

In my case this happens only when the device is running Android 10 and the targetSdkVersion in manifest file is 29.

The issue is related to external storage directory accessibility as described in the documentation:
https://developer.android.com/reference/android/os/Environment#getExternalStorageDirectory().
The related code is in ScanConstants.java:
public final static String IMAGE_PATH = Environment .getExternalStorageDirectory().getPath() + "/scanSample";

To solve this, you can:

Set the targetSdkVersion to less than 29 (not recommended); or

Create the image file elsewhere (tested with getExternalCacheDir())

I have tried 2 option tested with getDownloadCacheDir() when I click on the camera it force closes

ajinkya976 · 2020-07-10T06:26:09Z

yes i have also tried above options but it not worked for me

mauclores · 2020-07-11T16:47:06Z

Hello. Sorry I could not check code right now but could you try the following?

In PickImageFragment.java, create a variable imagePath.
private String imagePath = "";
Under init(), initialize imagePath
imagePath = getActivity().getApplicationContext().getExternalCacheDir().getPath() + "/scanSample";
Replace all instances of ScanConstants.IMAGE_PATH to imagePath. (I think there are 2 instances).

The idea is that the image file is stored in the application's cache directory. It was tested only using the default camera(Google camera) installed on device. 3rd Party cameras not yet tested.

vamsee9 · 2020-07-11T17:03:11Z

Thanks sir I will check out with it

ajinkya976 · 2020-07-13T03:55:59Z

Hello. Sorry I could not check code right now but could you try the following?

In PickImageFragment.java, create a variable imagePath.
private String imagePath = "";

Under init(), initialize imagePath
imagePath = getActivity().getApplicationContext().getExternalCacheDir().getPath() + "/scanSample";

Replace all instances of ScanConstants.IMAGE_PATH to imagePath. (I think there are 2 instances).

The idea is that the image file is stored in the application's cache directory. It was tested only using the default camera(Google camera) installed on device. 3rd Party cameras not yet tested.

Hi Mauclores,

I am getting same error in Android 10.

E/ContentProviderNative: onTransact error from {P:16212;U:10040}

vamsee9 · 2020-07-13T04:16:31Z

Hello. Sorry I could not check code right now but could you try the following?

In PickImageFragment.java, create a variable imagePath.
private String imagePath = "";

Under init(), initialize imagePath
imagePath = getActivity().getApplicationContext().getExternalCacheDir().getPath() + "/scanSample";

Replace all instances of ScanConstants.IMAGE_PATH to imagePath. (I think there are 2 instances).

The idea is that the image file is stored in the application's cache directory. It was tested only using the default camera(Google camera) installed on device. 3rd Party cameras not yet tested.

It's not working when I click camera app gets force closed

vamsee9 · 2020-07-16T13:45:47Z

got solution
public final static String IMAGE_PATH = getActivity().getExternalFilesDir(null).getAbsolutePath() + "/scannedimage"

ajinkya976 · 2020-07-17T07:56:13Z

Hi Vamsee9 i tried your solution but still getting same error E/ContentProviderNative: onTransact error from {P:19832;U:10040}

mauclores · 2020-07-17T08:41:14Z

Hello ajinkya976,
Could you check any of the solutions found in this link?
https://stackoverflow.com/questions/10831562/camera-always-returns-resultcode-as-0

ajinkya976 · 2020-07-17T08:56:39Z

Hi Mauclores,

Now when i capture photo and click on tick it comes back to main screen where we have camera button but not sets the image.

Getting below in console. it prints test 1 but not further SOP in OnActivityResult method.

2020-07-17 15:01:44.831 2622-2646/? D/DecorView: onWindowFocusChangedFromViewRoot hasFocus: true, DecorView@c41fdbd[DoScanning]
2020-07-17 15:01:45.900 2622-2692/? D/OpenGLRenderer: endAllActiveAnimators on 0x71950fce00 (RippleDrawable) with handle 0x71ffb35460
2020-07-17 15:01:52.515 2622-2622/? I/System.out:  >>>>>>>>>>>>>>>>>>> test 1 >>>>>>>>>>>>
2020-07-17 15:01:52.544 2622-2662/? D/DecorView: onWindowFocusChangedFromViewRoot hasFocus: true, DecorView@c41fdbd[DoScanning]

Here is my full code

public class DoScanning extends AppCompatActivity {

    private static final int REQUEST_CODE = 99;
    private Button scanButton;
    private Button cameraButton;
    private Button mediaButton;
    private ImageView scannedImageView;
    //private static final int STORAGE_CODE = 100;
    private static final int CAMERA_REQUEST = 1888;
    private static final int MY_CAMERA_PERMISSION_CODE = 100;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_do_scanning);
        init();


        cameraButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED)
                {
                    requestPermissions(new String[]{Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE}, MY_CAMERA_PERMISSION_CODE);
                }
                else
                {
                    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                    startActivityForResult(cameraIntent, CAMERA_REQUEST);
                }
            }
        });



    }

    private void init() {
        scanButton = (Button) findViewById(R.id.scanButton);
        scanButton.setOnClickListener(new ScanButtonClickListener());
        cameraButton = (Button) findViewById(R.id.cameraButton);
        cameraButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_CAMERA));
        mediaButton = (Button) findViewById(R.id.mediaButton);
        mediaButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_MEDIA));
        scannedImageView = (ImageView) findViewById(R.id.scannedImage);
    }

    private class ScanButtonClickListener implements View.OnClickListener {

        private int preference;

        public ScanButtonClickListener(int preference) {
            this.preference = preference;
        }

        public ScanButtonClickListener() {
        }

        @Override
        public void onClick(View v) {
            startScan(preference);
        }
    }

    protected void startScan(int preference) {
        Intent intent = new Intent(this, ScanActivity.class);
        intent.putExtra(ScanConstants.OPEN_INTENT_PREFERENCE, preference);
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        System.out.println(" >>>>>>>>>>>>>>>>>>> test 1 >>>>>>>>>>>>");
        if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK) {
            Uri uri = data.getExtras().getParcelable(ScanConstants.SCANNED_RESULT);
            System.out.println(" >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>"+uri);
            Bitmap bitmap = null;
            try {
                bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
                getContentResolver().delete(uri, null, null);
                System.out.println(" >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>"+bitmap);

                scannedImageView.setImageBitmap(bitmap);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    private Bitmap convertByteArrayToBitmap(byte[] data) {
        return BitmapFactory.decodeByteArray(data, 0, data.length);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.popup_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
       /* if (id == R.id.action_settings) {
            return true;
        }*/

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
    {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == MY_CAMERA_PERMISSION_CODE)
        {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
            {
                Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
                Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(cameraIntent, CAMERA_REQUEST);
            }
            else
            {
                Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
            }
        }
    }

}

mauclores · 2020-07-17T09:40:33Z

It means you are not receiving the correct result code, Activity.RESULT_OK after image capture.
This usually happens if permissions required are not granted.

Aside from camera, have you requested for WRITE_EXTERNAL_STORAGE?

ajinkya976 · 2020-07-17T10:18:05Z

i tried giving external storage permission also but still same thing is happening. i have updated permission code above. i checked in app setting and it is showing camera and storage permission.

Is it possible for you to share your MainActivity.java code ?

mauclores · 2020-07-17T10:25:35Z

Could you update from this:

if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
     requestPermissions(new String[]{Manifest.permission.CAMERA}, MY_CAMERA_PERMISSION_CODE);
}

To this?

if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED ||
    checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
        requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_CAMERA_PERMISSION_CODE);
}

ajinkya976 · 2020-07-17T10:28:57Z

Could you update from this:

if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
     requestPermissions(new String[]{Manifest.permission.CAMERA}, MY_CAMERA_PERMISSION_CODE);
}

To this?

if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED ||
    checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
        requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_CAMERA_PERMISSION_CODE);
}

I tried above step you suggested but still it is going to main screen after i click on tick button. it prints only test 1 SOP and after that not prints test 2 in OnActivityResult()

Below is my full updated code.

public class DoScanning extends AppCompatActivity {

    private static final int REQUEST_CODE = 99;
    private Button scanButton;
    private Button cameraButton;
    private Button mediaButton;
    private ImageView scannedImageView;
    //private static final int STORAGE_CODE = 100;
    private static final int CAMERA_REQUEST = 1888;
    private static final int MY_CAMERA_PERMISSION_CODE = 100;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_do_scanning);
        init();


        cameraButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED ||
                        checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
                    requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_CAMERA_PERMISSION_CODE);
                }
                else
                {
                    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                    startActivityForResult(cameraIntent, CAMERA_REQUEST);
                }
            }
        });

    }

    private void init() {
        scanButton = (Button) findViewById(R.id.scanButton);
        scanButton.setOnClickListener(new ScanButtonClickListener());
        cameraButton = (Button) findViewById(R.id.cameraButton);
        cameraButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_CAMERA));
        mediaButton = (Button) findViewById(R.id.mediaButton);
        mediaButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_MEDIA));
        scannedImageView = (ImageView) findViewById(R.id.scannedImage);
    }

    private class ScanButtonClickListener implements View.OnClickListener {

        private int preference;

        public ScanButtonClickListener(int preference) {
            this.preference = preference;
        }

        public ScanButtonClickListener() {
        }

        @Override
        public void onClick(View v) {
            startScan(preference);
        }
    }

    protected void startScan(int preference) {
        Intent intent = new Intent(this, ScanActivity.class);
        intent.putExtra(ScanConstants.OPEN_INTENT_PREFERENCE, preference);
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        System.out.println(" >>>>>>>>>>>>>>>>>>> test 1 >>>>>>>>>>>>");
        if (requestCode == REQUEST_CODE  && resultCode == Activity.RESULT_OK) {
            Uri uri = data.getExtras().getParcelable(ScanConstants.SCANNED_RESULT);
            System.out.println(" >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>"+uri);
            Bitmap bitmap = null;
            try {
                bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
                getContentResolver().delete(uri, null, null);
                System.out.println(" >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>"+bitmap);

                scannedImageView.setImageBitmap(bitmap);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    private Bitmap convertByteArrayToBitmap(byte[] data) {
        return BitmapFactory.decodeByteArray(data, 0, data.length);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.popup_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

       /* //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }*/

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
    {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == MY_CAMERA_PERMISSION_CODE)
        {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
            {
                Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
                Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(cameraIntent, CAMERA_REQUEST);
            }
            else
            {
                Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
            }
        }
    }



}

ajinkya976 · 2020-07-17T10:44:26Z

i think i have to put here CAMERA_REQUEST if (requestCode == CAMERA_REQUEST && resultCode == Activity.RESULT_OK)

if i am putting CAMERA_REQUEST then it is going in if condition but saying java.lang.NullPointerException: uri


I/System.out:  >>>>>>>>>>>>>>>>>>> test 1 >>>>>>>>>>>>
I/System.out:  >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>null
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.notepad.cuecardsnotes, PID: 16113
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.notepad.cuecardsnotes/com.notepad.cuecardsnotes.DoScanning}: java.lang.NullPointerException: uri
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4976)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:5017)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2123)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7710)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
     Caused by: java.lang.NullPointerException: uri
        at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:133)
        at android.content.ContentResolver.openInputStream(ContentResolver.java:1188)
        at android.provider.MediaStore$Images$Media.getBitmap(MediaStore.java:1755)
        at com.notepad.cuecardsnotes.DoScanning.onActivityResult(DoScanning.java:109)
        at android.app.Activity.dispatchActivityResult(Activity.java:8140)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4969)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:5017) 
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2123) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:214) 
        at android.app.ActivityThread.main(ActivityThread.java:7710) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)

Harshita-Kanal · 2020-07-19T15:04:23Z

go into your manifest file and try setting android:requestLegacyExternalStorage="true".
Refer to this link: https://stackoverflow.com/questions/57116335/environment-getexternalstoragedirectory-deprecated-in-api-level-29-java

ajinkya976 · 2020-07-21T11:48:11Z

android:requestLegacyExternalStorage="true"

Still getting same error


D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.notepad.cuecardsnotes, PID: 15387
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.notepad.cuecardsnotes/com.notepad.cuecardsnotes.DoScanning}: java.lang.NullPointerException: uri
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4976)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:5017)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2123)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7710)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
     Caused by: java.lang.NullPointerException: uri
        at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:133)
        at android.content.ContentResolver.openInputStream(ContentResolver.java:1188)
        at android.provider.MediaStore$Images$Media.getBitmap(MediaStore.java:1755)
        at com.notepad.cuecardsnotes.DoScanning.onActivityResult(DoScanning.java:109)
        at android.app.Activity.dispatchActivityResult(Activity.java:8140)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4969)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:5017) 
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2123) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:214) 
        at android.app.ActivityThread.main(ActivityThread.java:7710) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)

Manifest File

Java Code

public class DoScanning extends AppCompatActivity {

    private static final int REQUEST_CODE = 99;
    private Button scanButton;
    private Button cameraButton;
    private Button mediaButton;
    private ImageView scannedImageView;
    //private static final int STORAGE_CODE = 100;
    private static final int CAMERA_REQUEST = 1888;
    private static final int MY_CAMERA_PERMISSION_CODE = 100;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_do_scanning);
        init();


        cameraButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED &&
                        checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {

                    requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_CAMERA_PERMISSION_CODE);
                }
                else
                {
                    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                    startActivityForResult(cameraIntent, CAMERA_REQUEST);
                }
            }
        });

    }

    private void init() {
        scanButton = (Button) findViewById(R.id.scanButton);
        scanButton.setOnClickListener(new ScanButtonClickListener());
        cameraButton = (Button) findViewById(R.id.cameraButton);
        cameraButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_CAMERA));
        mediaButton = (Button) findViewById(R.id.mediaButton);
        mediaButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_MEDIA));
        scannedImageView = (ImageView) findViewById(R.id.scannedImage);
    }

    private class ScanButtonClickListener implements View.OnClickListener {

        private int preference;

        public ScanButtonClickListener(int preference) {
            this.preference = preference;
        }

        public ScanButtonClickListener() {
        }

        @Override
        public void onClick(View v) {
            startScan(preference);
        }
    }

    protected void startScan(int preference) {
        Intent intent = new Intent(this, ScanActivity.class);
        intent.putExtra(ScanConstants.OPEN_INTENT_PREFERENCE, preference);
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        System.out.println(" >>>>>>>>>>>>>>>>>>> test 1 >>>>>>>>>>>>");
        if (requestCode == CAMERA_REQUEST  && resultCode == Activity.RESULT_OK) {
            Uri uri = data.getExtras().getParcelable(ScanConstants.SCANNED_RESULT);
            System.out.println(" >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>"+uri);
            Bitmap bitmap = null;
            try {
                bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
                getContentResolver().delete(uri, null, null);
                System.out.println(" >>>>>>>>>>>>>>>>>>> test 2 >>>>>>>>>>>>"+bitmap);

                scannedImageView.setImageBitmap(bitmap);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    private Bitmap convertByteArrayToBitmap(byte[] data) {
        return BitmapFactory.decodeByteArray(data, 0, data.length);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.popup_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

       /* //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }*/

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
    {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == MY_CAMERA_PERMISSION_CODE)
        {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
            {
                Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
                Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(cameraIntent, CAMERA_REQUEST);
            }
            else
            {
                Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
            }
        }
    }



}

anandsaahil · 2021-02-02T11:48:45Z

Inside PickImageFragment class :
For the function : createImageFile()
Replace this : File file = new File(ScanConstants.IMAGE_PATH, "IMG_" + timeStamp + ".jpg");
With this : File file = new File(getActivity().getExternalCacheDir().getAbsolutePath(),"IMG_" + timeStamp + ".jpg");

Reason : getExternalStorageDirectory() has been deprecated in android 11 and 10. But can be used in android 10 with some tweaks in Manifest file like : android:requestLegacyExternalStorage="true"

dattran-pt19 · 2021-08-08T10:11:57Z

Thank you @anandsaahil , I have resolved my issue with camera feature.

Lazy-pilot · 2021-09-27T09:29:11Z

Hi Everyone,

please find my project here https://drive.google.com/open?id=1pKTq0QwxuN1jy9Q1eFSQyr-TUEHFKHtQ

i am using this library in my project i am able to take picture from camera but nothing happens after that. when i click on select button after clicking image, crop part is not coming. i am getting below error.

W/System.err: java.lang.NullPointerException: Attempt to get length of null array
        at com.reminder.testapplication.PickImageFragment.clearTempImages(PickImageFragment.java:67)
        at com.reminder.testapplication.PickImageFragment.createImageFile(PickImageFragment.java:133)
        at com.reminder.testapplication.PickImageFragment.openCamera(PickImageFragment.java:117)
        at com.reminder.testapplication.PickImageFragment.handleIntentPreference(PickImageFragment.java:77)
        at com.reminder.testapplication.PickImageFragment.init(PickImageFragment.java:58)
        at com.reminder.testapplication.PickImageFragment.onCreateView(PickImageFragment.java:48)
        at android.app.Fragment.performCreateView(Fragment.java:2534)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1303)
        at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2431)
        at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2210)
        at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2166)
W/System.err:     at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2067)
        at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3057)
        at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3004)
        at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:184)
        at android.app.Activity.performCreate(Activity.java:7822)
        at android.app.Activity.performCreate(Activity.java:7804)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1318)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3349)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3513)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2109)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7682)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
D/: openCamera: isDirectoryCreated: false
V/ViewRootImpl: The specified message queue synchronization  barrier token has not been posted or has already been removed
D/DecorView: onWindowFocusChangedFromViewRoot hasFocus: true, DecorView@664c4c[ScanActivity]
W/Choreographer: Already have a pending vsync event.  There should only be one at a time.
D/OpenGLRenderer: endAllActiveAnimators on 0x729c177600 (RippleDrawable) with handle 0x72f658d060
E/ContentProviderNative: onTransact error from {P:7122;U:10040}

The code I tried is below:

function inp()
{
var y=document.getElementByID("hiddenInput");
y.type= "text";
}

HTML:

This was referenced May 9, 2020

Use document scanner in Fragment. #116

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java.lang.NullPointerException: Attempt to get length of null array #110

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Nothing happens after click image #112

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