camera screen is zoomed

[Prathibha-Kirthi]

some zoom level is set by default.. Image is expanded.

this is how it looks in paytm

[ravi8x]

Is the issue still exists?

[Prathibha-Kirthi]

yes @ravi8x

[AnujProject]

I'm also getting the same issue.

[pesutsoos]

I'm facing the same issue. For me it happens right after allowing the application to take picture and record video (granting permission). If the app already got the permission (re-launching the activity) it just works fine

[hoang08t2]

@prathibhaprabs: Get the source code you can custom and fix that issue. At CameraSourcePreview.java -> protected void onLayout (boolean changed, int left, int top, int right, int bottom). I fixed for my project like below: @Override protected void onLayout (boolean changed, int left, int top, int right, int bottom) { int width = getWidth(); int height = getHeight();

// if (mCameraSource != null) { // Size size = mCameraSource.getPreviewSize(); // if (size != null) { // width = size.getWidth(); // height = size.getHeight(); // } // } // // int layoutWidth = right - left; // int layoutHeight = bottom - top; // // // Swap width and height sizes when in portrait, since it will be rotated 90 degrees // if (isPortraitMode()) { // int tmp = width; // //noinspection SuspiciousNameCombination // width = height; // height = tmp; // } // // int childWidth = layoutWidth; // int childHeight = (int) (((float) layoutWidth / (float) width) * height); // // if (isPortraitMode()) { // childHeight = layoutHeight; // childWidth = (int) (((float) layoutHeight / (float) height) * width); // }

    for (int i = 0; i < getChildCount(); ++i) {
        getChildAt(i).layout(0, 0, width, height);
    }

    try {
        startIfReady();
    } catch (SecurityException se) {
        Log.e(TAG, "Do not have permission to start the camera", se);
    } catch (IOException e) {
        Log.e(TAG, "Could not start camera source.", e);
    }
}

[Llorc]

@ravi8x, do you think the fix proposed by @hoang08t2 can be accepted and reported to main code in a new version ? Thanks. Can you add a way to set autofocus 'on' from code, actually this can be done only if you define it in xml. Thanks for all.

[hoang08t2]

@Llorc currently, The problem will come when you use a device with high density so that's my solution to fix that issue. I hope @ravi8x will upgrade to a new version.

[mroczis]

Listed solution is not correct. It will break aspect ratio. The problem here is that onLayout() of CameraSourcePreview is called before CameraSource#mPreviewSize is updated to proper value. By default mPreviewSize holds initial values (1024x768) or those set in CameraSource.Builder#setRequestedPreviewSize(int, int). So that is the cause of initial deformation.

This must be fixed by forcing onLayout() once mPreviewSize is correct. Quick fix is adding requestLayout() to CameraSourcePreview#startIfReady().

private void startIfReady() throws IOException, SecurityException {
        if (mStartRequested && mSurfaceAvailable) {
            mCameraSource.start(mSurfaceView.getHolder());
            if (mOverlay != null) {
                Size size = mCameraSource.getPreviewSize();
                int min = Math.min(size.getWidth(), size.getHeight());
                int max = Math.max(size.getWidth(), size.getHeight());
                if (isPortraitMode()) {
                    // Swap width and height sizes when in portrait, since it will be rotated by
                    // 90 degrees
                    mOverlay.setCameraInfo(min, max, mCameraSource.getCameraFacing());
                } else {
                    mOverlay.setCameraInfo(max, min, mCameraSource.getCameraFacing());
                }
                mOverlay.clear();
                requestLayout();
            }
            mStartRequested = false;
        }
    }

[shankhajana]

@mroczis i've tried your fix..but i'm having a green stripe on the right side of the screen

[Llorc]

I found a solution that solve the issue on my side:

• first, on CameraSourcePreview#startIfReady() , move the requestLayout() juste before the last '}'
• second, modify the CameraSourcePreview#onLayout() to adjust/center the view

@Override
    protected void onLayout (boolean changed, int left, int top, int right, int bottom)
    {
        int width = getWidth();
        int height = getHeight();

        if (mCameraSource != null) {
            Size size = mCameraSource.getPreviewSize();
            if (size != null) {
                width = size.getWidth();
                height = size.getHeight();
                // Swap width and height sizes when in portrait, since it will be rotated 90 degrees
                if (isPortraitMode()) {
                    int tmp = width;
                    //noinspection SuspiciousNameCombination
                    width = height;
                    height = tmp;
                }
            }
        }

        int layoutWidth = right - left;
        int layoutHeight = bottom - top;


//        int childWidth = layoutWidth;
//        int childHeight = (int) (((float) layoutWidth / (float) width) * height);
//
//        if (isPortraitMode()) {
//            childHeight = layoutHeight;
//            childWidth = (int) (((float) layoutHeight / (float) height) * width);
//        }

        float ratio =  ((float)Math.max(layoutHeight, layoutWidth))/(float)Math.min(width, height);
        int childWidth = (int) ((float) width * ratio);
        int childHeight = (int) ((float) height * ratio);
        int childLeft = (childWidth>layoutWidth)?(childWidth-layoutWidth)/-2:0;
        int childTop = (childHeight>layoutHeight)?(childHeight-layoutHeight)/-2:0;


        for (int i = 0; i < getChildCount(); ++i) {
            getChildAt(i).layout(childLeft, childTop, childWidth, childHeight);
        }

        try {
            startIfReady();
        } catch (SecurityException se) {
            Log.e(TAG, "Do not have permission to start the camera", se);
        } catch (IOException e) {
            Log.e(TAG, "Could not start camera source.", e);
        }
    }

I hope this will solve the issue for you too ;)

[alanpaivaa]

@Llorc your solution did not work for me. At first, it seemed fine when I tried, but if you put the app to background and then come back, a black stripe appears on the right.

[ccsavvy]

Hi @Llorc ,

Your solution works but I can't get it scanned. The scan functionality was somehow didn't went through the scanning process.

Nothing happens when I tried scanning the barcode/qrcode. Are you experiencing the same? How can I get the scanning works? I'm running it on Amazon KF tablet 5th generation.

Any help would be greatly appreciated. Thank you!

Cheers, Christian

[fukemy]

Hello. it's seem still not fix in new version gradle.

[Renrhaf]

Also experiencing a green bar on the scanner, using this library on a custom app on the following device : https://fr.aliexpress.com/item/IPDA020-Tablet-pos-terminal-Android5-1-System-Wirelss-portable-bluetooth-58mm-thermal-printer-PDA-Sunmi-V1/32827863258.html?spm=a2g0s.9042311.0.0.AHhM7K

[mmarshad]

I'm also experiencing the same problem (a green bar appears on right of the scanner ). Did somebody find the fix for that?

[fukemy]

hello @mmarshad . Let download this project and add to your Android Studio as library, then modify the class CameraSourcePreview as above comment

[johnguild]

In my case the green line only shows if i don't use Full Screen, Below is what i did to fix it. Hope it helps others.

In Android Manifest.

 <activity android:name=".ScannerActivity"
        android:theme="@style/FullTheme"
        android:launchMode="singleInstance">
        <intent-filter>
            <action android:name="android.intent.action.Scanner" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
   </activity>

Style used.

<style name="FullTheme" parent="Theme.AppCompat.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

Activity's OnCreate

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    
    /* use as full screen */
    window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN)

    setContentView(R.layout.activity_scanner)

    /* hide keyboard if necessary */
    val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
    imm.hideSoftInputFromWindow(relativeScanner.windowToken, 0)

    //# Initialize and show barcode fragment
    mBarcodeReader = supportFragmentManager.findFragmentById(R.id.barcode_fragment) as BarcodeReader

}

[1amGr00t]

As I am adding the barcode scanner from a fragment, setting full-size will not work for me. Why does it take so long to fix this ?

[moisesvs]

Any ideas about this issue?. I am trying fix this but when I apply style full Theme the Qrs are detected in the right side not in the center. Any solution?

Thansk

[AlekseyDanilov]

I also had this issue (camera screen is zoomed). I solved this problem just added full screen mode in onCreate method:

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

[originalkwame]

This solve my problem by setting the screen to full screen

[sanjeet007]

What still not fixed this issue ??