Execution failed for task ':react-native-nfc-manager:compileDebugJavaWithJavac'.

[Monisha-Raju]

cannot find symbol 'FLAG_MUTABLE' with the version v3.11.1

[Richie]

@Monisha-Raju thanks for spotting this!

To fix this, please update your compileSdkVersion in android/build.gradle, for example:

buildscript {
    ext {
        ...
        compileSdkVersion = 31
        ...
    }
    ...
}

The reason for this is because Android puts new limitation on PendingIntent:

Starting with Build.VERSION_CODES.S, it will be required to explicitly specify the mutability of PendingIntents

So we have to do this in-order to support Android 12.

[Monisha-Raju]

@whitedogg13 - Changing compileSdkVersion to 31 resolved the 'FLAG_MUTABLE' issue, But it is throwing error in the java compiler. The source and target compatibility is JavaVersion.VERSION_1_8. Do you have any suggestion for this issue?

[Hari Antara]

I have fix on my local and no need to update buildscript on /android/build.gradle

buildscript {
    ext {
        buildToolsVersion = "30.0.2"
        minSdkVersion = 21
        compileSdkVersion = 30
        targetSdkVersion = 30
        ndkVersion = "21.4.7075529"
    }
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath("com.android.tools.build:gradle:4.2.2")
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

Step to Fix this issue:

• Open Project (only android folder) on Android Studio
• Go to react-native-nfc-manager/java/community.revteltech.nfc/NfcManager.java
• after that try to change NfcManager.java code into this

class NfcManager extends ReactContextBaseJavaModule implements ActivityEventListener, LifecycleEventListener {
    private static final String LOG_TAG = "ReactNativeNfcManager";
    private final List<IntentFilter> intentFilters = new ArrayList<IntentFilter>();
    private final ArrayList<String[]> techLists = new ArrayList<String[]>();
    ...........
    private int FLAG_MUTABLE;  // -----------------> add this

    class WriteNdefRequest {
        NdefMessage message;

    ................


  private PendingIntent getPendingIntent() {
        Activity activity = getCurrentActivity();
        Intent intent = new Intent(activity, activity.getClass());
        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

        int flag = 0;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
          flag = FLAG_MUTABLE;  // -----------------------------> add this
        }
        return PendingIntent.getActivity(activity, 0, intent, flag);
    }

• after update that file, try to Invalidate Caches/Restart on Android Studio at menu file, and then Clean Build and Re Build again

[Roberto Oliveira]

@whitedogg13 Same issue on Expo as well. How to figure it out?

[Richie]

the same as #473, close

[Çağrı]

i made compileSdkVersion = 31 but this time firebase crashlytics fired errors while building. so i solved it like this:

1. fork the project
2. go to /react-native-nfc-manager/android/src/main/java/community/revteltech/nfc/NfcManager.java file
3. go to line 1213 and change this section to this:

private PendingIntent getPendingIntent() {
        Activity activity = getCurrentActivity();
        Intent intent = new Intent(activity, activity.getClass());
        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
        int flag = 0;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            flag = 33554432; //PendingIntent.FLAG_MUTABLE;  
        }
        return PendingIntent.getActivity(activity, 0, intent, flag);
    }

use your version of the package. clean gradle cache and build the project.

[vimosan7]

Android 12/API 31 was giving me trouble, downgrading react-native-nfc-manager to v3.14.1 resolved the issue for me