на 1 скрине вместо
let state = state.users.push .....
замените на
this.setState({
username:item.username,
level.itemlevel
})
index.android.js
android/settings.gradle
android/app/build.gradle
android/app/src/main/AndroidManifest.xml
android/app/src/main/java/com/<app id>/MainActivity.java
android/app/src/main/java/com/<app id>/MainApplication.java
const ViewPhotoStack = createStackNavigator({
ViewPhoto:{screen: ViewPhotoScreen}
})
createStackNavigator({
Main:{screen:MainScreen},
ViewPhoto:ViewPhotoStack
});