Black Screen On Redmi 4A

[nickghodke]

Device: Redmi
Model number: Redmi 4A
Using this lib's app in the above mentioned device, I get a black screen whether I import image (which was clicked by camera) from gallery or take a photo using the camera in the app.

[vasiledoe]

Same to me galaxy J5

[nickghodke]

i resolved it by changing the value of options.inSampleSize to 6 instead of 1
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 6; in PhotoEditorActivity.

Previously it was
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 1;

[sreekanth100khere]

@nickghodke Any clue why it worked? And where did you come up with this "magic number" 6 from. If you have more information regarding the bug & fix please let me know.

[nickghodke]

Did it worked for you i actually dont remember it right now but i was getting an issue on that sampleInSize while debugging so i changed it to randomly 6 other than 1 and it worked for me

[sreekanth100khere]

The documentation says so:-

/**
        * If set to a value > 1, requests the decoder to subsample the original
        * image, returning a smaller image to save memory. The sample size is
        * the number of pixels in either dimension that correspond to a single
        * pixel in the decoded bitmap. For example, inSampleSize == 4 returns
        * an image that is 1/4 the width/height of the original, and 1/16 the
        * number of pixels. Any value <= 1 is treated the same as 1. Note: the
        * decoder uses a final value based on powers of 2, any other value will
        * be rounded down to the nearest power of 2.
        */

    So regardless of you use 4 or 6 the value that is taken is 4, if you want to make a difference, you should use the value 8.