WebRTCModule.java:3: error: package android.support.annotation does not exist

I am trying to do a release build ./gradlew assembleRelease and getting this error

> Task :react-native-webrtc:compileReleaseJavaWithJavac FAILED
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/WebRTCModule.java:3: error: package android.support.annotation does not exist
import android.support.annotation.Nullable;
                                 ^
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/PeerConnectionObserver.java:13: error: package android.support.annotation does not exist
import android.support.annotation.Nullable;
                                 ^
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/WebRTCView.java:7: error: package android.support.v4.view does not exist
import android.support.v4.view.ViewCompat;
                              ^
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/DataChannelObserver.java:5: error: package android.support.annotation does not exist
import android.support.annotation.Nullable;
                                 ^
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/WebRTCModule.java:102: error: cannot find symbol
    void sendEvent(String eventName, @Nullable WritableMap params) {
                                      ^
  symbol:   class Nullable
  location: class WebRTCModule
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/PeerConnectionObserver.java:480: error: cannot find symbol
    @Nullable
     ^
  symbol:   class Nullable
  location: class PeerConnectionObserver
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/PeerConnectionObserver.java:501: error: cannot find symbol
    @Nullable
     ^
  symbol:   class Nullable
  location: class PeerConnectionObserver
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/PeerConnectionObserver.java:514: error: cannot find symbol
    @Nullable
     ^
  symbol:   class Nullable
  location: class PeerConnectionObserver
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/DataChannelObserver.java:31: error: cannot find symbol
    @Nullable
     ^
  symbol:   class Nullable
  location: class DataChannelObserver
/Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/WebRTCView.java:590: error: cannot find symbol
                && ViewCompat.isAttachedToWindow(this)) {
                   ^
  symbol:   variable ViewCompat
  location: class WebRTCView
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /Users/nitsornwongsajjathiti/Documents/projects/mHealth/ayahealth/node_modules/react-native-webrtc/android/src/main/java/com/oney/WebRTCModule/PeerConnectionObserver.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
10 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':react-native-webrtc:compileReleaseJavaWithJavac'.

Expected behavior

For it to build the release APK successfully

Observerd behavior

It is throwing an above error. However building debug APK is successful.

Platform information

MacOS, trying to build for android

• React Native version: 0.60.4
• Plugin version: 1.69.2
• OS: Android
• OS version: 9

[blueorange589]

When android.useAndroidX=true android.enableJetifier=true in gradle.properties file, Studio requires some androidx libraries for the build.

I could finally able to build, after following changes removed import android.support.annotation.Nullable; added import androidx.annotation.Nullable; in DataChannelObserver.java, PeerConnectionObserver.java, WebRTCModule.java

In addition to these, following changes are required in WebRTCView.java removed import android.annotation.SuppressLint; removed SuppressLint("WrongCall")

removed import android.support.v4.view.ViewCompat; added import androidx.core.view.ViewCompat;

Finally app level build.gradle file needs the following dependencies { implementation 'androidx.annotation:annotation:1.1.0' }

Should be good after these

[saghul]

As I said before: sorry, but I just can’t review everyone’s code. Try to simplify it and start adding the complexity gradually. I see you are using socketio. Don’t. Start by getting the user camera and rendering it in a view, then start working on the remote case.

Also: this is not the right place to ask for help, please use our community: https://react-native-webrtc.discourse.group/