Targeting S+ (version 31 and above)

[Hesam-Taleghani]

Hi! Thanks for t his great project
I work with nfca tags and my app works fine with android 10 but when I want to run it on android 12, It crashes
Caused by: java.lang.IllegalArgumentException: com..: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
E/AndroidRuntime(21272): Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
E/AndroidRuntime(21272): at android.app.PendingIntent.checkFlags(PendingIntent.java:382)
E/AndroidRuntime(21272): at android.app.PendingIntent.getActivityAsUser(PendingIntent.java:465)
E/AndroidRuntime(21272): at android.app.PendingIntent.getActivity(PendingIntent.java:451)
E/AndroidRuntime(21272): at android.app.PendingIntent.getActivity(PendingIntent.java:415)
E/AndroidRuntime(21272): at com.example.coollog.MainActivity.onResume(MainActivity.kt:13)
E/AndroidRuntime(21272): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1476)
E/AndroidRuntime(21272): at android.app.Activity.performResume(Activity.java:8441)
E/AndroidRuntime(21272): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:5200)

[xdamien7]

Hello,

It took me a while but this sold the problem for me

1.modify your MainActivity.kt file (search in your project) in the app/src/main/kotlin/com folder tree

`
package com.yourpackage.name

import android.app.PendingIntent
import android.content.Intent
import android.nfc.NfcAdapter
import io.flutter.embedding.android.FlutterActivity

/// Workaround for disabling the default-tag-detection while the app is foreground.
class MainActivity: FlutterActivity() {
override fun onResume() {
super.onResume()

val intent = Intent(context, javaClass).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
val pendingIntent = PendingIntent.getActivity(
context,
0,
intent,
PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT // setting the mutability flag 
)

NfcAdapter.getDefaultAdapter(context)?.enableForegroundDispatch(this, pendingIntent, null, null)

}

override fun onPause() {
super.onPause()
NfcAdapter.getDefaultAdapter(context)?.disableForegroundDispatch(this)
}
}

2. modify your app/build.gradle file

in the bottom of the file add below dependencies.

below is my copy

dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

// (Java only)
implementation("androidx.work:work-runtime:2.7.1")

// Kotlin + coroutines
implementation("androidx.work:work-runtime-ktx:2.7.1")

}

Hope this helps (can't guarantee this will work for you, but it may guide you)

[Grrravity]

Bump this :P

Trying @xdamien7 's proposal but would be nice to have this fixed

Edited :
Workaround worked 👍🏼

[ManXliu]

有用