android-arsenal.com | Source to android-arsenal.herokuapp.com | Android library

I am using MaterialSpinner and I want to put an error under the spinner if nothing gets selected,

here is what I tried so far :

I am trying to use the support libraries of version 25.2.0 so I will be able to use the CameraKit library.

I have got the newest build tools downloaded:

and the support repository:

my gradle file:

I followed the installation instructions at android arsenal and was able to build the solution:

In main build.gradle:

Android has a standard ProgressBar with a special animation when being indeterminate . There are also plenty of libraries of so many kinds of progress views that are available (here).

In all that I've searched, I can't find a way to do a very simple thing:

Have a gradient from color X to color Y, that shows horizontally, and moves in X coordinate so that the colors before X will go to color Y.

For example (just an illustration) , if I have a gradient of blue<->red , from edge to edge , it would go as such:

I've tried some solutions offered here on StackOverflow:

• Change horizontal progress bar indeterminate color
• How to change android indeterminate ProgressBar color?
• Custom Drawable for ProgressBar/ProgressDialog
• How to change progress bar's progress color in Android
• How to Change Horizontal ProgressBar start color and end Color gradient

but sadly they all are about the standard ProgressBar view of Android, which means it has a different way of showing the animation of the drawable.

I've also tried finding something similar on Android Arsenal website, but even though there are many nice ones, I couldn't find such a thing.

Of course, I could just animate 2 views myself, each has a gradient of its own (one opposite of the other), but I'm sure there is a better way.

Is is possible to use a Drawable or an animation of it, that makes a gradient (or anything else) move this way (repeating of course)?

Maybe just extend from ImageView and animate the drawable there?

Is it also possible to set how much of the container will be used for the repeating drawable ? I mean, in the above example, it could be from blue to red, so that the blue will be on the edges, and the red color would be in the middle .

EDIT:

OK, I've made a bit of a progress, but I'm not sure if the movement is ok, and I think that it won't be consistent in speed as it should, in case the CPU is a bit busy, because it doesn't consider frame drops. What I did is to draw 2 GradientDrawables one next to another, as such:

I'm trying to replace SwipeRefreshLayout loading animation with a Lottie animation

I have gone through all the libraries listed in android arsenal, none of them is feasible for my requirement as they do not implement Lottie animation and all the libraries have pre-coded animation

I have also tried this library which says "LottieSwipeRefreshLayout" from Github. but it is not working, as the animation is not visible, I do not want to use a library for such a small concept please suggest me the best way to implement.

Help me like this very much important for my task

Sync error in my project and i'm getting Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.shawnlin:number-picker:2.4.8. error and sync failed in android studio.

To solve this error i'm adding the dependency in my build.gradle file from https://android-arsenal.com/details/1/3718

I'm using FancyShowCaseView library. When focusing on a button it work fine, but when focusing on TabLayout or MenuItem of Android SlidingTabs it don't work.

I'm tring to focus on TabLayout or MenuItem's of my app.

I want to get have over scroll listener in NestedScrollView in order to make my top ImageView get Zoomed when user over scrolls. Something like this

Above library uses ScrollView which in my case I need NestedScrollView. So i wanted to follow the same approach by the developer, but having some trouble solving few issues.

In View there is a protected method overScrollBy that is used in ScrollView which developer overrides in his CustomScrollView. Unfortunately, instead of overScrollBy NestedScrollView uses it's own overScrollByCombat which is private and I cannot override it. So, I am kind of stuck at how to get "overScrollListener" in my CustomNestedScrollView.

The only solution I could think of was actually making my PreCustomNestedScrollView in which I just copy paste the source code of NestedScrollView and setting the overScrollByCombat as public. It works but I don't thinks it's an elegant way.

If there are already any such libraries that gives the same effect with NestedScrollView, you are welcome to recommend.

I am getting this error Unable to decode stream: java.io.FileNotFoundException: /content:/media/external/images/media/119 (No such file or directory)

on the variable takenImageUri While calling this function (using this library):