Test apk without compiling for each version - android

If I compile my application for API level 25 and and distribute apk using fabric beta, will it automatically support other API levels? My min SDK level is set to 21.

Easy to test, kick off some emulators and try the app with different versions, 21, 22, 23, etc and check for the results. Because sometimes the app can be installed on X version but something can do crash for a specific version.

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downgrade min sdk version results too many errors on Android Studio

Actually I'm new to Android and I built my project targeting version API 25, compile 25, min 25 version, and now i need my app to be accessible for more devices like sdk 14!
I changed min SDK version to 14 and it raised lots of errors.
Note that I'm using RecyclerView, DrawerLayout, FloatingActionbar and BigContentNotification in my application!
I used min SDK 19 and trying to install in android 4.0.4!!
But actually there was some points too:
Use that library's versions that are Compatible (same) with your target api (Recommended)
If you put wrong(Incompatible) versions together, Your application might crash; so it's better to read This first

SDK level problems in developer console

so im working on a small utility app to get started on the play store and ive come across a few issues which has led me up to this
It is forbidden to downgrade devices which previously used M permissions (target SDK 23 and above) to APKs which use old style permissions (target SDK 22 and below). This occurs in the change from version 1 (target SDK 23) to version 2 (target SDK 19).
for a small app like this it would be irritating for it to only be available on newer versions considering it doesnt require much. I cant remove the apk nor can i delete the project entirely so the question is should i just publish it for sdk 23 or should i just leave the project alone and make an entirely new one?
You are mistaken. Target SDK means the latest supported version. But it would still allow applications be installed on newer versions. Min SDK version means the earliest supported version.
If Target SDK is set to 23, and update comes out, which is 24, then app would still work on that device, however, whatever new features SDK 24 brings, won't be available.
You can read more at API Guides

Can I only install the newest Android API to target lower API Version?

Say I wanna make an app with :
android:minSdkVersion="8"
android:targetSdkVersion="22"
My questions :
Do I need to install both "min SDK Version" as well as the target SDK version?
How if I only have SDK Version of 23 only? Can I make such setting? Or do I need to have both 22 as well as 8?
Can I debug such app with API / SDK Ver 21 phone?
Is it enough to only have the latest SDK version to develop any kind of app?
It is okay if there's any source (link) to comprehensive rule about such ruling, since I didn't found it even after extensive searching.
P.S. I don't know if this info is needed, but the app I wanna make is a libgdx game app.
Thanks
No. (the other answer is wrong)
You only need to have the version that you building with (compileSdkVersion in build.gradle). If you only have 23, then build with 23.
Usually, you should target the same version you build with. However, libgdx is not always fully tested with the latest Android. Check here under Android build version to see what it has been tested for. This is the SDK level you should should target if you want to be sure not to have any problems. Right now, it is version 20 of Android.
I have been targeting Android 22 without issue (that I know of), though. I haven't yet released something higher than 20 yet so no guarantees that it's perfectly safe.
Yes.
Yes. Generally, the target SDK version and the build SDK version should match, but it works if you target a lower version than you're building with.
Targeting a later API basically changes some default behavior of apps. Theoretically, you should be testing on devices spanning the full range of API levels that you support, but in practice this is unnecessary for a libgdx game. But if you target a version that's too old, you might miss out on some newer features. For example, if you target <19, immersive mode (which is desirable for most games) cannot be supported.
Yes you need to install
If you have SDK Version of 23 only but you want to build it in version 22 then also you need to install vesrsion 22 SDK.
Yes you can easily debug such app with API / SDK Ver 21 phone.
I think its enough.

What should be the Target SDK when publishing an Android app?

I have been working on an Android project from past one year in Eclipse with API level set to 4.2 (target SDK 17).
Now I want to publish it in the Play Store. Should I change the target SDK (manifest file) to the latest (i.e. 4.4) since my app works perfectly on KitKat?
The purpose of targetSdkVersion is explained in the developer documentation for <uses-sdk>:
This attribute informs the system that you have tested against the target version and the system should not enable any compatibility behaviors to maintain your app's forward-compatibility with the target version. The application is still able to run on older versions (down to minSdkVersion).
As Android evolves with each new version, some behaviors and even appearances might change. However, if the API level of the platform is higher than the version declared by your app's targetSdkVersion, the system may enable compatibility behaviors to ensure that your app continues to work the way you expect.
TL;DR: You should set targetSdkVersion to the API level that you've primarily been developing and testing on. Google recommends that you see to it that this is the latest Android version, but that may not always be feasible (for financial and other reasons).
See your app will work fine with kitkat because the newer versions are always made to be compatible with the older android versions,but vice versa is not true....if you develop something in higher API level and then try to run it in older versions of android, than it may happen that your app may not work or some features may not work as expected.So,you too can add KITKAT compatibility in your android manifest file ...cheers
As per this announcement you have to make sure to use a recent target SDK (at most one or two versions older than the most recent), otherwise you cannot publish your app in the Play Store. This is enforced for new apps as of August 2018 and November 2018 for updating existing apps, requiring you to target API level 26 or newer.

What is minSdkVersion for Amazon Android in-app purchase SDK?

Some Amazon docs hint that it is 10, but examples run with 8. So what is the correct/safe/practical answer?
It is the minimum SDK requirement for application, App Developers put this variable to not install this app earlier version of device than min SDK version, it is just a safe check, to not install the app on incompatible devices
According to wikipedia http://en.wikipedia.org/wiki/Kindle_Fire the first Kindle Fire was based on Android 2.3.4 which is based on Android SDK version 10. Therefore there is no benefit to use minSdkVersion lower than 10.
If you use minSdkVersion lower than 10 your app will run on all Kindle Fires because new Android versions can run apps written for older Android versions.
However if you specify min SDK version 10 you can use all APIs that is available in the SDK version 10 but is not available in the Android SDK version 8.

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