How to determine which minSDKVersion to set for my Android App

Question

How can I determine the minimum API Level or Maximum API Level used in my project? And is there any way to determine which part of code in my project uses which API Level?

Is there anyway in android studio to determine minimum API Level & maximum API Level used in my project? Like for example "TODO" tracks of all tasks etc, do we have any feature in Android studio to determine minimum API Level & maximum API Level used in my project?

I'm newbie so please bear with me.

Answer 1

To determine minSdk and maxSdk see build.gradle(Module: app) in Gradle Scripts. See the project structure:

• compileSdkVersion is de maxSdk.
• minSdkVersion is minSdk.
• targetSdkVersion is de maxSdk tested version.

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.2"
    defaultConfig {
        applicationId "app.id"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility = 1.8
        targetCompatibility = 1.8
    }
}

Answer 2

For the absolute minSdkVersion that you can actually set for the current status/version of app (as you said in comments) you can identify it using brute force:

1. Set minSdkVersion to 1
2. build the project.
3. If it builds then current minSdkVersion is the absolute minSdkVersion, else it will give an error telling some dependencies to the anotherSdkVersion, now set minSdkVersion to anotherSdkVersion --go to step 2.