How to blur your eyes

Question

I have a view having different colors. I need to blur the background of this view. for example, there is a LinearLayout in which there is a grid that shows some applications, this linear layout (Gridview Container) has a color (RED / green / black ... etc. no image). Now I need to blur the LinearLayout background. This image is what I must achieve.

I do all this with the Android Render script because I have a lot of fragments and each fragment has a colored background, so I believe that Render is the best option that can get stuck when viewing a pager.

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    RelativeLayout mainLayout=(RelativeLayout)findViewById(R.id.activity_main);
    view=(View)findViewById(R.id.view);
    Bitmap blurredBitmap = blur( this,  getBitmapFromView(view) );

    view.setBackgroundDrawable( new BitmapDrawable( getResources(), blurredBitmap ) );
    mainLayout.setBackgroundResource(R.drawable.wallp);
}
public static Bitmap getBitmapFromView(View view) {
    view.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
    Bitmap bitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(),
            Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
    view.draw(canvas);
    return bitmap;
}
private static final float BITMAP_SCALE = 0.4f;
private static final float BLUR_RADIUS = 7.5f;

public static Bitmap blur(Context context, Bitmap image) {
    int width = Math.round(image.getWidth() * BITMAP_SCALE);
    int height = Math.round(image.getHeight() * BITMAP_SCALE);
    Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
    Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);

    RenderScript rs = RenderScript.create(context);
    ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
    Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
    theIntrinsic.setRadius(BLUR_RADIUS);
    theIntrinsic.setInput(tmpIn);
    theIntrinsic.forEach(tmpOut);
    tmpOut.copyTo(outputBitmap);

    return outputBitmap;
}

Now the problem is that if I set the color on the LinearLayout background, then an error occurs

: java.lang.IllegalArgumentException: > 0 , ,

...

Answer 1

• LinearLayout .

• LinearLayout.

• OnDraw (Canvas mCanvas).

• LinearLayout 1. DrawBitmap 2. DrawColor.

• DrawBitmap, ViewPager , swipe .

• , .

, .

Answer 2

, getBitmapFromView. , :

view.post(new Runnable() {
    public void run(){
        Bitmap blurred = blur(YourActivity.this, getBitmapFromView(view));
        view.setBackgroundDrawable(new BitmapDrawable(getResources(), blurred));
    }
});

!