I have a transparent layout in android, and behind the layout there is an image. how to make the linear blur ? I found examples to make the image itself blur but I don't want to make whole image blue, just only the part that is behind the linear layout.
Set a semitransparent Blur image to the linear layout or simplest set a color to linear layout and set it to semitransparent by defining alpha
edited solution
do this...
1.) create a blur copy of the image u have on background.
2.) clip the image by using
Bitmap croppedBmp = Bitmap.createBitmap(originalBmp, startX, startY, widthLayout , heightOfLayout);
3.) set this image in the Linear Layout using an image-view with height and width attribute as fill-parent.
I have pretty complex solution, so there won't be any code. So, here is idea, step by step:
Let's assume that your layout have just single custom LinearLayout. No ImageView as a background.
What we going to do, is draw background drawable of LinearLayout by our own, so it will first draw full image and then draw blurred square from the same image on top. Content of LinearLayout might be moved to desired position using paddings.
So, create something like MyLinearLayout and put it to your layout resource. Provide required constructors.
Override onAttachedToWindow() and onDetachedFromWindow() methods. Inside them we should load our background Bitmap and recycle it accordingly. Let's name it mBackground
Override draw() method. Inside it we're going to first draw our mBackground.
Then, you can use Canvas#clipRect() method to crop drawing area of Canvas to some specified rectangle. In your case, this rectangle should be the area below your content. You can figure it out using View#getPadding*() methods. Don't forget to call canvas#save() before clipping drawing area.
Now you can draw your bitmap once again with blur (I don't know which method exactly you're using, so let's assume that you know how to do it... but you still can share it with us :) ). Cool thing is that you can just draw the same Bitmap once again in full scale - since we had called clipRect before, it will be drawn only within this area. Don't forget to call canvas#restore() after drawing background.
Call super.draw() to draw rest of the stuff, that your LinearLayout contains.
Related
I need to create an imageview with background drawable like a frame but not getting the required design.
I'm getting these images
But the required designs are
In your layout, set the background to the required colour.
android:background="#FFF9C4"
Then add the ImageView inside the layout and add padding on Left, Right, Top and Bottom of size as per requirement.
You can explore shape too, using shape you can control the corners as well.
How to change TRANSPARENT part of image set in imageview with another image?
Below is the main image, there is TRANSPARENT portion(here looks white), i want to set another image withing that portion of image.
any idea how to do it?
Question:
How to find TRANSPARENT portion starting point LEFT(x,y), RIGHT (x,y), BOTTOM LEFT (x,y), BOTTOM RIGHT(x,y) ? for image replacement.
How to process bitmap in runtime to add another image to make changes in imageview?
I've tried this to find transparent part of image.
You have a bitmap (B1) and there is only one rectangle transparent zone somewhere. And you want to place another bitmap (B2) inside it.
use monte-carlo method to find any transparent pixel on B1. You know
it's coordinates now.
go [left/right/top/bottom] from transparent pixel and find
first solid pixel. Now you know transparent rectangle coorditates.
There are several ways to put something inside transparent area. You can:
place second imageview (with B2) under the first one (with B1). Set B2 padding inside imageview accordingly transparent zone coordinates.
create new image from B1 and B2 and set it to imageview.
do it some other way...
try this example in this crop image with transparent part it will use full for you.
https://github.com/ketanpatel25/Image-Cropping-In-Transparent-Area
I create a subclass of RelativeLayout，the use of it in the layout file.In the layout file also defines some components widget.Overwrite the OnDraw painted a picture，The picture can not draw on the top, but the control block.
Like this:
How do I get the picture to the layout of the above.the picture is and move according to the finger movement..thanks.
I'm trying to make a circle of one color on a background of another.
background = new ShapeDrawable(new OvalShape());
background.getPaint().setColor(main.getResources().getColor(R.color.XXX));
view.SetBackground(background);
will work for the colored circle, and
view.setBackgroundColor(getResources().getColor(R.color.XXX));
will work for the background, but they're mutually exclusive. It just ends up with what I did last. Is there a way to make the circle on another overlapping view or something like that?
setBackgroundColor() is basically a short cut for changing the view's background to a colour drawable.
To do what you want you could try one of the 2 things described below:
Put a view in a FrameLayout, set the background colour in the FrameLayout, and put the shape in the view.
You could also try to use ImageView, which can have a background and another drawable with setImageDrawable() method.
I have been trying to make a circular TextView. Its a circle in which I want to accomodate whole space above a circular bubble as shown in image below.
Kindly see attached image.
In this image, we have a circular bubble with circular text in it.
I have already tried setting oval shape .xml as background of TextView but still no luck.
Edit:
As text length increase. It must reduces in size to fit inside the circle. This is the hardest part to think about.
You need to create a custom view, extending from TextView probably, setting the circle as background image, and calculate the text width / break the lines manually according to the width of the text.
To calculate the width of a string, see How to calculate string font width in pixels?
Some math and calculations is required of course to measure the available space per line; but I think that's the only way, as there's no standard component out there to do it.
To place the text onto the view, use drawText of the Canvas class.