Radar like scanning animation Android

Question

I am trying to animate something like radar scanning on map. I have design it as well. Please check image I am adding. I have tried it using circular progress bar. But didn't succeed. Please guide me with proper approach.

One approach could be to rotate the bitmap, see: http://stackoverflow.com/questions/1930963/rotating-a-view-in-android and http://stackoverflow.com/questions/18983631/rotating-an-image-bitmap-with-animation-android — AndrewBloom, Oct 19 '15 at 18:27
I don't have any image or bitmap. Actually I am drawing circle on map with radius and wants a animation where needle moves like in watches which reflect as scanning that radius. — user2980181, Oct 19 '15 at 18:34
are the icons bitmaps? you could draw the circle on a bitmap and rotate that. — AndrewBloom, Oct 20 '15 at 13:35
This looks like what you are looking for: [GoogleMapsAnimations](https://github.com/aarsy/GoogleMapsAnimations) — RonTLV, Dec 04 '17 at 10:06

score 2 · Accepted Answer · answered Oct 20 '15 at 07:02

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There is a library available for radar scan view here https://github.com/gpfduoduo/RadarScanView

answered Oct 20 '15 at 07:02

user2980181

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score 1 · Answer 2 · edited May 23 '17 at 11:58

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This is an example of a Sweep Gradient. Well, perhaps it also has a radial gradient overlay as well, but that is besides the point.

Perhaps this will help you: https://stackoverflow.com/a/9054550/2066079

Then, it's just a matter of animating it. Take a look at this example: How to animate gradient?

edited May 23 '17 at 11:58

Community

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answered Oct 19 '15 at 19:01

dberm22

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score 0 · Answer 3 · edited Apr 10 '21 at 12:36

its very easy Step 1. add Image in xml layout. Step 2. go to java or activity file then rotate the image.

Activity Code:-

ImageView scanner = (ImageView) findViewById(R.id.scann);
        RotateAnimation rotate = new RotateAnimation(0, 360, 
        Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
        rotate.setDuration(1500);
        rotate.setRepeatCount(3);
        rotate.setInterpolator(new LinearInterpolator());
        scanner.startAnimation(rotate);

Radar like scanning animation Android

3 Answers3