activityinfo | level monitoring and analysis of humanitarian actions

I am a beginner to android. I want to slide a slidebar in a horizontal linear layout but when I run the code, the application ends giving error FallingBall keeps stopping

My xml:

I would like to create simple custom UI elements in Android like the ones from the screenshot:

The light bulb should always have the same size but the rectangle should vary in the width. One option of doing this is to use Canvas elements. But I would like to ask whether there is also an easier approach for doing this. Is it possible to maybe only do this by using XML files? I would like to use these UI elements then in the LayoutEditor like e.g. a TextView where I can adjust the widht and height either in the XML layout file or programmatically.

Any idea how I can do that in an easy way?

Update: I tried the suggested approach from Cheticamp and I have the following code inside my Fragment:

Im in a fragment1 and i want go to fragment2 if an event occurred in a class called from the fragment1. I have tried a callback of fuction: function in Class call a function in fragment1 to go in fragment but i collect this error:

I'm a new android application engineer. I'm trying to make a vulkan rendering backend demo which use SurfaceView as a View on android Java code. I made the gles rendering backend demo using GLSurfaceView as well. On application code, I use setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) API set activity from default portrait to landscape. But it doesn't work on SurfaceView while it works on GLSurfaceView.

I use renderdoc capture the rendering result, the image is in landscape layout(the same layout as gles backend). I doubt it was's something wrong with some settings on activity or window, but can't figure it out the root cause. Could somebody help what maybe the problem is?

Here is the Java source code.

When looking at the ResolveInfo return from resolveActivity() and queryIntentActivities(),

why the ResolveInfo is different from these two calls for the same intent?

the viewIntent is Intent(Intent.ACTION_VIEW, Uri.parse(deeplinkData), and the one returned from resolveActivity has unrelated packagename/name:

I have an activity that implements an observer inside the OnCreate for a MutableLiveData variable that is in a ViewModel.

I have implemented an EndlessScroll for RecyclerView (Only Images in it) or we can say Pagination but after implementing it I don't know why the images are not loading up from Firebase

So I tried to include a placeholder image from my adapter class but the default placeholder image is not showng up too

BTW before asking this SO Q I asked a Q to how to implement Pagination with StaggeredGridLayoutManager but after implementing the answer to my Orignal question there are no errors but the images are showing up This is the Question link for reference on how I implemented the pagination in my recycler view - How to implement endless scroll (pagination) in recyclerview with StaggeredGridLayoutManager

Here is the code

Home_Fragment.java // for those who are referencing my original question which I put a link above,this is a different fragment than my original question in the original question I have included Profile_Fragment.java, but because that file is much longer,I have included this because it has less code compared to the orignal

Hello there I have a recyclerview with images loaded from firebase I want to implement endless scroll but the issue I'm getting is with StaggeredGridLayoutManager and I have to use it I cant replace it with grid-layout

Note:- I have seen other answers on this topic but the majority of answers are for LinearLayoutManager and some for GridLayout but there is only one answer I found for StaggeredGridLayoutManager which I don't know why it's not working for me

If you want more references of the code please tell me I will update the question

Profile_Fragment.java

I am developing custom Android launcher and I have an option to uninstall apps directly from program list. Now, I would like to remove uninstall option for apps that can't get uninstalled, i.e. system apps, apps signed with platform keys...

I found in ActivityInfo class following flags