App crashes instead of open razorpay payment page in flutter

[yashdabi]

flutter run is working fine in the emulator and real device.
but after flutter build apk, the app Crashed on _razorpay.open(options);
and the plugin is not showing a crash report or any error in the visual studio code terminal.

  final _razorpay = Razorpay();
 _razorpay.on(Razorpay.EVENT_PAYMENT_SUCCESS, _handlePaymentSuccess);
  _razorpay.on(Razorpay.EVENT_PAYMENT_ERROR, _handlePaymentError);
 _razorpay.on(Razorpay.EVENT_EXTERNAL_WALLET, _handleExternalWallet);

  var options = {
      'key': 'rzp_test_xxxxxxx',
      'amount': 100, //in the smallest currency sub-unit.
      'name': 'Acme Corp.',
      'description': 'Fine T-Shirt',
      'prefill': {'contact': '9123456789', 'email': 'test.kumar@example.com'}
    };

    print('0');
 try {
      print('1');
      _razorpay.open(options);
      print('2');
    } catch (e) {
      print('error');
      debugPrint(e);
    }

in the visual studio code terminal

11-05 00:22:29.197 21170 21209 I flutter : 0
11-05 00:22:29.197 21170 21209 I flutter : 1
11-05 00:22:29.197 21170 21209 I flutter : 2

In the Andoid studio logcat
java.lang.ClassNotFoundException: Didn't find class "com.razorpay.d__1_"

2019-11-05 11:59:49.168 30159-30159/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.my_task, PID: 30159
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.my_task/com.razorpay.CheckoutActivity}: 
java.lang.ClassNotFoundException: Didn't find class "com.razorpay.d__1_" on path: DexPathList[[zip file "/data/app/com.example.my_task-OX9pWhAo1dl4QP0DQBF58w==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.my_task-OX9pWhAo1dl4QP0DQBF58w==/lib/arm64, /data/app/com.example.my_task-OX9pWhAo1dl4QP0DQBF58w==/base.apk!/lib/arm64-v8a, /system/lib64, /system/vendor/lib64]]
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2957)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6944)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.razorpay.d__1_" on path: DexPathList[[zip file "/data/app/com.example.my_task-OX9pWhAo1dl4QP0DQBF58w==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.my_task-OX9pWhAo1dl4QP0DQBF58w==/lib/arm64, /data/app/com.example.my_task-OX9pWhAo1dl4QP0DQBF58w==/base.apk!/lib/arm64-v8a, /system/lib64, /system/vendor/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at com.razorpay.Y_$B$.Q_$2$(:1112)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.razorpay.A.<clinit>(:204)
        at com.razorpay.A.a(Unknown Source:0)
        at com.razorpay.c.b(:189)
        at com.razorpay.h.b(:412)
        at com.razorpay.ja.onCreate(:82)
        at com.razorpay.u.onCreate(:23)
        at com.razorpay.CheckoutActivity.onCreate(:8)
        at android.app.Activity.performCreate(Activity.java:7183)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220)

[ashutoshxhq]

Same issue with my implementation

[sharad-paghadal]

@idkashutosh try this - https://pub.dev/packages/razorpay_plugin

[ashutoshxhq]

Fixed it by adding the proguard rules in android

[ashutoshxhq]

@yashdabi Try adding proguard rules as shown in razorpay docs. https://razorpay.com/docs/payment-gateway/android-integration/standard/ Also if you are doing release build, do sign the apk by following the flutter release build guide. https://flutter.dev/docs/deployment/android

[yashdabi]

@yashdabi Try adding proguard rules as shown in razorpay docs. https://razorpay.com/docs/payment-gateway/android-integration/standard/ Also if you are doing release build, do sign the apk by following the flutter release build guide. https://flutter.dev/docs/deployment/android

@idkashutosh thanks, it's working
I just following below steps for this solution.

1 step
make a file name of proguard-rules.pro inside android>app
that should be : android/app/proguard-rules.pro
then paste below code inside proguard-rules.pro file

-keepclassmembers class * {
    @android.webkit.JavascriptInterface <methods>;
}

-keepattributes JavascriptInterface
-keepattributes *Annotation*

-dontwarn com.razorpay.**
-keep class com.razorpay.** {*;}

-optimizations !method/inlining/*

-keepclasseswithmembers class * {
  public void onPayment*(...);
}

2 step
go to android>app>build.gradle and find buildTypes
inside buildTypes>release add some lines

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
            minifyEnabled true
            useProguard true 
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

now Razorpay is working.

[Vickycp]

thanks bro

[yashpaneliya]

Thank you so much @yashdabi 🚀🚀

[Sagar6133]

i m aslo facing same problem and i ahve added proguard rules ... did not worked ..the api key is test key ... it is woring with debug version, not working with release version

can anyone guide please

[Sagar6133]

can anyone help please , how it will be fixed

[sumedht]

Closing this issue due to no further response. Please feel free to either re-open the issue or create a new issue if you have any additional queries.

[adamshamsudeen]

In the documentation, it says "If you are using proguard for your builds" use the following. But looks like progaurd is necessary, without which I'm getting this error. Can we mention it that way in the documentaion?

[vijaypareek13]

I have integrated razorpay in flutter web but facing the same problem. Please anyone here to help me

[rohan220217]

I have done everything like I have added progaurd rule and also mentioned it in gradle file but still, in production mode, the checkout button becomes an infinite white screen. I am using the test key. Please help!

[yashdabi]

@rohan220217 what error is showing in Logcat after opening the Razorpay

try this to see Logcat messages
https://stackoverflow.com/questions/58693539/how-to-see-debug-console-when-app-installed-through-apk-in-flutter

[rohan220217]

@rohan220217 what error is showing in Logcat after opening the Razorpay

try this to see Logcat messages
https://stackoverflow.com/questions/58693539/how-to-see-debug-console-when-app-installed-through-apk-in-flutter

Thank you very much @yashdabi but I fixed my error while debugging. The checkout button becomes grey infinite screen because I have used incorrect parent widget

[TusharKhari]

As I used razor pay plugin today and it showed me some this signature error :

• What went wrong:
  A problem occurred evaluating project ':app'.

No signature of method: build_1qfv6up9v4rgk8kbzjky2agc8.android() is applicable for argument types: (build_1qfv6up9v4rgk8kbzjky2agc8$_run_closure2) values: [build_1qfv6up9v4rgk8kbzjky2agc8$_run_closure2@4b270c5a]

so fixed this error by commenting "useProguard true" in android/app/build.gradle and it worked for me

[ameenulislam]

If you tried everything and nothing worked!

Accrording to razorpay docs, you should create an order in the server (probably using an API) before calling razorpay.open(Options).
It is important that the order_id you are sending should match with one you get in response while you created an order earlier

This only applies if you are sending an order_id in your razorpay options