CODEWITHSUNDEEP
androidandroid-canvasandroid-bitmap
Matthieu Meunier
Matthieu Meunier

Reputation: 473

Weird behaviour canvas - Bitmap rotated by itself

I'm creating a view that will allow me to draw over a given bitmap.

As I create the canvas I set the bitmap as the base for it. It works perfectly on an emulator but, when I try to use it on my phone it behave strangely and rotate the bitmap by 90 degrees.

Here is how I create the canvas. I get the right backgroundPicture from my previous activity.

    mBitmap = backgroundPicture.copy(Bitmap.Config.ARGB_8888, true);
    mBitmap = Bitmap.createScaledBitmap(mBitmap, width, height, true);
    mCanvas = new Canvas(mBitmap);

ANd here are the screenshots

When I take the picture : When I take the picture

What it displays in my recycler view (displays normally) recycler view display

What it displays on the canvas (90 degrees on the left) weird display

Thank you for your help, I'm not used to work with canvases so I'm a bit lost :/

Upvotes: 2

Views: 93

Answers (1)

Matthieu Meunier
Matthieu Meunier

Reputation: 473

After some digging it appears that the problem comes from my smartphone, a Samsung Galaxy A3. In some Samsung models the camera is rotated to gain place for the others components of the phone. Some Samsung handle the difference but if they don't you'll get an rotation of 0 and you'll have to handle the rotation problem model by model manually.

I hope this will help other people.

Cordially, Matthieu

Upvotes: 2

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