Develop Reference

React Native - Android Emulator Device

For several hours now, I have tried to change the emulator that Android uses with no luck, the application will launch and run fine on the default Nexus 5. by using react-native run-android. but trying to run it on another emulator crashes, If I try to build from Android Studio, it will not connect to Metro.
I either launch the emulator in Android studio and it won't connect to the Metro bundler.
Or I launch it from the command line with CLI react-native run-android and it launches Nexus 5 and I can't do shit.
Why can't the emulators easier like ios (facepalm).
Please help me easily launch my react native app on a different emulator than the default. It's outrageous this is not a choice or option. I have tried for hours.
F**ken ANDROID HELL

check this out, you will surely find a solution. Its there in android official site
https://developer.android.com/studio/run/emulator-commandline

Visual Studio for android emulator is not working

I am trying to automate a native android app and I am using VS emulator for android device 6.0 android version. It freezes sometimes and I have to close and relaunch the emulator again and it works for a while and get the same freezing screen problem
How do I fix Visual Studio emulator for the android freezing problem?

React native wont compile on Android device but will on emulator

TypeError inside of index.android.bundle
I have this error when running my React native on my physical android device but everything works perfectly on any android emulator i've tried. I don't really know what can I do since this error is in the bundle so i'm at a loss at where to really fix this error.

react-native: Is there a method to run iOS simulator and Android simulator at the same time?

How to run ios and android simulator at the same time?
Now I use the ios simulator iPhone 6 and use the Genymotion to run Android.
I cd to my project path. I can run iOS simulator. I run Android simulator well too. Now only one simulator runs well when I run Android simulator and the iOS simulator at the same time. Then I select the iOS simulator and type command +　Ｒ，the iOS simulator run well, and then the Android simulator show red screen, the text shows me:
I select the Android simulator and reload android. Then Android simulator is running well, but the iOS simulator screen become red, the error text shows:
The bash text is this:
Loading dependency graph...
React packager ready.
Loading dependency graph, done.
Bundling `index.ios.js` 100.0(1274/1274), done.
Bundling `index.android.js` 100.0(1126/1126), done.
Bundling `index.android.js` 100.0(1272/1272), done.
I see the two simulators do not run at the same time.
Is there a method to run the two simulators at the same time?
=======
I restart the mac and run the iOS and Android simulator, now two simulators run well at the same time.

You can simultaneously run both Android and IOS emulators with React-Native, but you can enable remote JS debugging in only one emulator at a time. If you happen to enable remote JS debugging in both emulator then one of the emulator will not work.

APPHOST9623: The app couldn't resolve ms-appx:

Developed a hybrid mobile app on cordova 3.0. Trying to deploy in android, windowsPhone 8.1 and ios. Have been facing problems with IOS 8.2 in macincloud. When upgraded to CTP 3.1 in Visual Studio, it upgraded to Cordova 3.7, now the app is completely broke in windows and android throwing errors like
APPHOST9623: The app couldn't resolve ms-appx:.....
All the references are broke.
Also xmlhttprequest is also broke in ripple.
Looking for some real good help here. Please ping me soon.