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hi sir hope you are right. I am working on app that contain fingerprint feature in it at one point and which fingerprint sdk i enabled its min minSdkVersion is 23 and i want to allow this app to run on all devices when i changed minSdkVersion to 16 then its not running. here is the error mesage below which it shows

Manifest merger failed : uses-sdk:minSdkVersion 16 cannot be smaller than version 23 declared in library [me.aflak.libraries:fingerprint:2.5.3] C:\Users\Zahid Iqbal\.gradle\caches\transforms-2\files-2.1\0f64be97807f594934240311bd0e96bb\jetified-fingerprint-2.5.3\AndroidManifest.xml as the library might be using APIs not available in 16
Suggestion: use a compatible library with a minSdk of at most 16,
    or increase this project's minSdk version to at least 23,
    or use tools:overrideLibrary="me.aflak.libraries" to force usage (may lead to runtime failures)

here is he manifest for the jetified-fingerprint

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="me.aflak.libraries"
android:versionCode="37"
android:versionName="2.5.3">

<uses-sdk
    android:minSdkVersion="23"
    android:targetSdkVersion="27" />

<uses-permission android:name="android.permission.USE_FINGERPRINT" />
Zahid Iqbal
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1 Answers1

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You can't use a library with minimum Sdk version above your own minimum Sdk version. Omar Aflak (https://github.com/OmarAflak/Fingerprint) uses minSDK 23 in his library. You have to raise your minimum version or use another library.

I just read in this article https://jaxenter.de/fingerprint-sensor-in-android-das-muessen-entwickler-wissen-36481 (sorry, it's german) that fingerprint support was added in SDK 23 (Marshmallow Android). So you do not even need to support older versions.

Maybe this can help you further Run app with higher SDK on lower SDK

Andreas
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