Old Android Lock Screen - How is it designed - android

Any idea on how the old android lock screen was designed. The one that existed in 2.2, 2.3 etc. You can slide the left image to to the right to unlock it. Similarly, you can slide the right image to the left to take a photo.
Any idea how this was developed?
I am assuming that an onTouchListener was implemented on two images which moves according to your touch. However, How do you end up positioning the images and so on. Anyone worked on a project like this before?

On my device it was "right to left" to toggle silent- You might have a phone with non-stock Android, in which case the OEM could have customized their own lock screen.
That said, Android is open source, so you can look at the lock screen source code and see how they implemented it :)

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Gallery pics re-sized when seeing from android

I’m quite a newbie around here so this kinda feel like I’m learning sanscrit. Thrilling and overwhelming at the same time.
Anyway, the thing is I'm using wordpress at my laptop and I'm sttrugling at keeping my pics at the size expected when I switch to android. They look totally fine on the laptop preview for the phone, but on the real world they're basically turning into a thumbnail. I attach a picture of expectation versus reality
I apologize in advance because I suspect this is part of the ABC of programming; I don't even know if I should be uploading my pics with a particular size. I promise I'm training to become a proper padawan, and 'll appreciate any feedback.
Thank you so much for your time, and have a great day!
If you are starting with Wordpress, best thing to do is to work with themes supported by Elementor & one that allows you to modify the design for desktop, tablet, & mobile versions separately.
-Select 'Edit with Elementor'
-select the section with these six pictures. in the '#Edit Section' box at the right, you will see three options- layout/content, style, advanced.
-Select 'Advanced' and scroll down till the bottom section.
-Select the 3rd last option, 'Responsive'. From here you can hide the mentioned section for mobile.
It would look something like the attached picture
DO BEAR IN MIND THAT I HAVE ADDED SAME BUTTON TWICE - the button at the left is visible to site visitors using desktop/tablet. At the right part, you can see same button blurred. That's 'cause I hid it from Desktop & Tab.
Similarly, you too have to add section with pictures again to show in mobile only.
For that, find and click on Responsive icon & select Mobile.
Decorate the section just the way you want and do not forget to hide it from PC & Tab.

PhoneGap – Page "zooms" out of viewport by rotation

i'm pretty new to PhoneGap.
For my first project I designed a website with Adobe Muse and built it into an APK with a normal, empty PhoneGap-Project.
It works very well, but when I rotate my Device (it is a tablet and the app is only meant to run on a tablet with Android 5.0) I experience strange problems with my web page "zooming" out of display on the right and the bottom.
And every time I rotate it back and forth, it zooms one step more out of the viewport.
Pic 1
Pic 2
Pic 3
Does someone know this problem - or even better - a solution?
Will be very thankful for every hint!
Edit:
I used PhoneGap-Build.
No plugins or something were used.
I have slider widgets (the ones from Muse) on the pages where the error occurs.

vuforia unity project on android phone shows triangle broken screen

I currently have a simple Vuforia and Unity project for android where I have a postcard as a target, and then you can cycle through a set of pictures while you are looking at the target by swiping left and right on the screen. However when I run the demo on my android phone(Samsung Galaxy S6 Edge), the demo divides the screen into two separate triangles where one is completely black, and the other triangle changes color based on where the camera for the phone is facing. I've attached a still image of the problem where it shows white for one triangle, black for the other, and my image target is the postcard placed on the table broken demo image.
Any help would be greatly appreciated, this error has been going on for some time. If I need to post anything else please feel free to let me know.
Thanks!
we faced this problem too. Here is the solution-
Go to Build Settings > player Settings , On the right hand side a window will change, go to Other Settings and Auto Graphics API untick, and Open GLES3 remove it by pressing negative sign
Hope it works

Android Settop box Display viewport only at the right bottom of the screen

I have a Geniatech ATV1220 android set top box running android 4.2.2 and am using an arduino with motion sensor connected to it to modify content on a website when someone is in front of the sensor via NodeJS.
This works great, but what I would like to do is to manipulte the complete system viewport of the android system. For example if someone steps in front of the sensor, the whole system should be displayed in a reduced size like 1/4 original at the bottom right side of the screen while the other area should just display black or basically nothing.
It is really hard to find something because of the pretty common keywords like display, viewport, size and so on. I could probably do it dependent on individual applications but I also want to use it in third party applications, which I cannot modify.
Currently I am sometimes using commands like this:
echo 1 >/sys/class/graphics/fb0/blank
to modify the actual content that is displayed, in this case it all turns black/blank and I wonder if there is a similar way to achieve what I want to do. Any help is greatly appreciated.
What worked in the end was using the Xposed Framework and installing "One-handed mode" like explained here: How to get a one-handed mode on almost any rooted Android device.

Forward and backward navigation buttons for Android

I am porting an iPhone app to Android, and I can't find the Android equivalent of the UINavigationItem. These are buttons with a triangular side indicating movement between different screens. For an example of what I'm trying to accomplish, this is from the BeyondPod app:
http://mobiputing.wpengine.netdna-cdn.com/wp-content/uploads/2011/05/beyondpod.jpg
The buttons labeled "Categories" and Podcasts" are what I'd like to duplicate.
Android has a hardware back button. Forward is typically accomplished by some widget, such as a button or link, somewhere in the Activity.
I looked at the screenshot you posted again and noticed that your left and right buttons are to switch between categories and not to go to an earlier screen.(Im not sure if im right)
If that's the case using the left and right buttons are okay as they are to switch between categories and not the previous screen. But keeping a left button just to go to the previous screen isn't really necessary. Here we need to think in terms of an android user. They are hardwired to press the hardware back button to go to a previous screen. There are many examples of apps that have a bit of changes in their android and iPhone version. Eg Evernote.
It uses tabs on the iPhone but in android they sort of created a dashboard in combination with an action bar.
So main thing to consider when porting an iphone app is to make enough changes so that an android user will feel like it has a navigation they are used to. Most apps that look exactly the same as iphone apps are created with these cross mobile development tools(titanium, sencha touch).

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