API 28 Issue

Hello,

I recently bumped my application to API 28, when launching the application, the following below crashes within the ColorPickerView.

Using these dependencies crash the app implementation ‘com.android.support:design:28.0.0-rc01’ implementation ‘com.android.support:appcompat-v7:28.0.0-rc01’

Going down to API 27 works fine, not sure if the new dependencies once they get out of RC will still cause issues.

08-09 20:23:22.157 8630-8630/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.lossydragon.arduinorgb, PID: 8630
    java.lang.IllegalArgumentException: x must be < bitmap.width()
        at android.graphics.Bitmap.checkPixelAccess(Bitmap.java:1780)
        at android.graphics.Bitmap.getPixel(Bitmap.java:1728)
        at com.skydoves.colorpickerpreference.ColorPickerView.getColorFromBitmap(ColorPickerView.java:215)
        at com.skydoves.colorpickerpreference.ColorPickerView.setSelectorPoint(ColorPickerView.java:313)
        at com.skydoves.colorpickerpreference.ColorPickerView.onFirstLayout(ColorPickerView.java:111)
        at com.skydoves.colorpickerpreference.ColorPickerView.access$000(ColorPickerView.java:40)
        at com.skydoves.colorpickerpreference.ColorPickerView$1.onGlobalLayout(ColorPickerView.java:102)
        at android.view.ViewTreeObserver.dispatchOnGlobalLayout(ViewTreeObserver.java:945)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2358)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1460)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7184)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:949)
        at android.view.Choreographer.doCallbacks(Choreographer.java:761)
        at android.view.Choreographer.doFrame(Choreographer.java:696)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:935)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Thanks,

[skydoves]

It’s fixed at version 1.0.5. @acorbin3 Thank you for your contribution!

[effleurager]

@skydoves I found the issue:

private int getColorFromBitmap(float x, float y) {
        if (paletteDrawable == null) return 0;

        Matrix invertMatrix = new Matrix();
        palette.getImageMatrix().invert(invertMatrix);

        float[] mappedPoints = new float[]{x, y};
        invertMatrix.mapPoints(mappedPoints);

        if (palette.getDrawable() != null && palette.getDrawable() instanceof BitmapDrawable &&
                mappedPoints[0] > 0 && mappedPoints[1] > 0 &&
                mappedPoints[0] < palette.getDrawable().getIntrinsicWidth() && mappedPoints[1] < palette.getDrawable().getIntrinsicHeight()) {

            invalidate();
            return ((BitmapDrawable) palette.getDrawable()).getBitmap().getPixel((int) mappedPoints[0], (int) mappedPoints[1]);
        }
        return 0;
    }

In the non-zero return statement, palette.getDrawable() will return a drawable with the dimensions relative to whatever the display size is. In Android P, the call to .getBitmap() will return the size of the original bitmap, which is 730×730.

You’ll have to interpolate the mapped points, or multiply the points with a scaling factor in the .getPixel() call.