React Native - Build successful on android but app crash

Question

When I build (> react-native run-android) with my dependencies the build is successful ! However, when the app is launch it crash immediately ... How don't know how is it possible, there is no error, nothing to tell me why the application is crashing...

It's sure it is from the dependencies...

dependencies {
    implementation project(':react-native-intercom')
    implementation "io.intercom.android:intercom-sdk:3.+"

    implementation project(':react-native-onesignal')
    implementation 'com.google.android.gms:play-services-location:+'

    implementation project(':react-native-linear-gradient')
    implementation project(':react-native-i18n')
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.facebook.react:react-native:+"
    implementation project(':tipsi-stripe')
    implementation (project(':react-native-maps')) {
        exclude group: 'com.google.android.gms', module: 'play-services-base'
        exclude group: 'com.google.android.gms', module: 'play-services-maps'
    }
    implementation (project(':react-native-camera')) {
        exclude group: "com.google.android.gms"
        exclude group: "com.android.support", module: 'support-v4'
    }
    implementation "com.android.support:appcompat-v7:23.0.1"
    implementation 'com.google.android.gms:play-services-base:10.0.1'
    implementation 'com.google.android.gms:play-services-maps:10.0.1'
    implementation 'com.google.android.gms:play-services-gcm:10.0.1'
}

Thank you really much

Answer 1

For checking exception logs in generated release mode apk follow steps 1-3. (Step 1 can be skipped if signed release mode apk is already installed on device.)

1. Make sure adb devices command lists your device then Install app on device/emulator by running below command from folder with apk.

   adb -d install -r app-name.apk ex : adb -d install -r learnapp.apk

change -d to -e if you want to install on emulator.

2. run adb logcat | FINDSTR "Exception" This will log all exception messages on cmd.

3. Now start the app and exception detail will be available on cmd.

Exceptions can be really minute problems for example i had console.clear() in one of my app screen's componentDidMount() hook and console.clear is undefined exception was causing the crash after navigating to that screen. After running steps 1-3 I found out the exception, removed that line from code, generated apk again and app worked just fine afterwards!!