Develop Reference

Custom view with animation drawable

I want to create a custom view which should have animation. I want to draw the circle with specifying the radius and some drawable element in this custom view which should be moving in this circle.
I know how to draw a circle, how to add a drawable element, but I don`t know how to animate this drawable element.
Should I write animation methods in custom view or better to create another class with animation logics and apply it to my custom view. Can you give me some advice?
I think that second case is wrong because in this way a whole view will be animating, but not only drawable.

image background like a frame using android drawable xml

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.

Android ImageView pan animation with scaleType centerCrop

I have an ImageView set to scaleType="centerCrop" , I am trying to create an animation which pans this ImageView to its left and right edges, which are outside of the bounds of the view.
How would I do this?
Normally when animating I have the full view on screen already, but in this case the ImageView itself is rendered but its source is scaled outside the bounds of its view. So if I was just animating the VIEW itself I won't be accessing the source.
This may have something more to do with animating on a canvas within an imageview, instead of moving the X, Y position of the imageview itself. Insight appreciated
Regarding the "too broad" allegation to close this question, yeah, it isn't.

I was able to do this with the KenBurnsView library object
https://github.com/flavioarfaria/KenBurnsView
I modified my version to use my custom imageview objects which extend NetworkImageView from Volley

How to make a blur transparent linear layout

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.

setBackgroundColor() and setBackground() are mutually exclusive in android

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.