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enter image description here

I have managed to connect a device ( I see logs and see the tree of React Native elements), but now I have an issue with connecting the app - "NO APPLICATION SELECTED" is what I see. Any ideas to fix it?

AlexUA
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8 Answers8

14

Ran into the same problem on both iOS and Android with Flipper 0.135.0. Managed to make both work by following the steps below.

iOS

This answer solved the issue for me.

tl;dr

brew update && brew upgrade idb-companion

Also make sure you are installing the correct Cocoapod of Flipper by specifying the exact version in your Podfile with (for version 0.135.0)

use_flipper!({ 'Flipper'=> '0.135.0' })

Android

Ensure that ReactNativeFlipper.java is in the correct folder, as in this example project.

With for example the applicationId com.domain.appName, the correct path is

android/app/src/debug/java/com/domain/appName/ReactNativeFlipper.java

In my project this Java file was in the incorrect folder, which resulted in the Logcat error

java.lang.ClassNotFoundException: com.domain.appName.ReactNativeFlipper

NiFi
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  • Where can I find an application id? – AlexUA Feb 23 '22 at 13:54
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    @Olek You can find your application id e.g. in the _app/build.gradle_ file. [Application ID](https://developer.android.com/studio/build/configure-app-module#set-application-id) – NiFi Feb 23 '22 at 13:58
  • You could still try to move that java file into the correct folder. But there might of course be something completely else that is the problem. – NiFi Mar 15 '22 at 12:25
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    Thank you so much, sir! Found an issue: my application id name was structured like ```domain.developerName.appName```, I just had to move ```ReactNativeFlipper.java``` to ```android/app/src/debug/java/com/domain/developerName/appName/ReactNativeFlipper.java``` – AlexUA Mar 15 '22 at 12:42
  • This didn't work for me. The error message says it is looking for the java class com.domain.ReactNativeFlipper even though my Application ID is io.domain. I tried moving .../debug/java/com/domain to .../debug/java/io/domain. Also tried .../debug/java/com/io/domain as per @AlexUA solution. But it always shows an error looking for com.domain.ReactNativeFlipper. Guess NiFi is right, something else is wrong. – chetstone Jul 31 '22 at 19:51
14

enter image description here

Go to settings and check if the path for your Sdk is correct

Gabriel Cecon Carlsen
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Ensure that you are running the latest version of Flipper (0.120.0 as of this message) and then:

For Android:

  • Bump the FLIPPER_VERSION variable in android/gradle.properties, for example: FLIPPER_VERSION=0.120.0.
  • Run ./gradlew clean in the android directory.

For iOS:

  • Call use_flipper with a specific version in ios/Podfile, for example: use_flipper!({ 'Flipper' => '0.120.0' }).
  • Run pod install in the ios directory.

Reference: https://fbflipper.com/docs/getting-started/react-native/#using-the-latest-flipper-sdk

micnguyen
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2

In my case issue was with the Emulator OS and API.

I used following combination and it worked:

  • Device: Pixel 4a
  • OS: Android 12
  • API: (Release Name: S, API level: 31, ABI: arm64-v8a, Target: Android 12
Yuvraj Patil
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I also faced this issue, I was not seeing android simulator and the app to select, but it was working fine for iOS without any config.

The problem with my setup was that in the Flipper settings, the android SDK's path was not correct, after updating the path and restarting Flipper, it automatically detected the simulator and the app. Hope this helps.

abhishek
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I was able to solve that on Android, open ReactNativeFlipper.java file

In the first line package com.yourappname; change it to exactly your package name inside AndroidManifest.xml

Tuan Dat Tran
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In the MainApplication.java there is a line like

 initializeFlipper(this, getReactNativeHost().getReactInstanceManager());

inside onCreate() function. In my project this line was commented. I removed the comment and run react-native run-android and flipper get connected to the app

Gokulakrishnan
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The following worked for me.

  1. Set the path to Android SDK correctly
  2. Ensure the watchman is set up
  3. Ensure the Setup Doctor is not flagging any issue

None of the above resolved the issue until I uninstall the app from the device, close the Metro Bundler terminal, and then run yarn android after this Fipper "NO APPLICATION SELECTED" error disappeared.

Desktop FLIPPER_VERSION=0.201.0 React native Android FLIPPER_VERSION=0.125.0

Seunope
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