Develop Reference

react-native can't build run android correctly

I was trying to run an android project with this command:
react-native run-android
but it doesn't build anything and print this msg:
Starting JS server...
Building and installing the app on the device (cd android && gradlew.bat installDebug)...
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring project ':app'.
> Could not download javax.inject.jar (javax.inject:javax.inject:1)
> Could not get resource 'https://jcenter.bintray.com/javax/inject/javax.inject/1/javax.inject-1.jar'.
> Could not GET 'https://jcenter.bintray.com/javax/inject/javax.inject/1/javax.inject-1.jar'.
> Connect to jcenter.bintray.com:443 [jcenter.bintray.com/108.168.243.150] failed: Connection timed
t: connect
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log outpu
BUILD FAILED
Total time: 2 mins 17.303 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html
how can I fix it?

as you can see, you need to run your android simulator first or connect to a device.
so in your terminal
type:
android avd
then create a device if you dont have one, then start it.
If the simulator has run, then you can start building by typing
react-native run-android

Ionic app build issue

I am new to ionic. I have developed sample application ionic.
When I try to execute below command it gives gradle error.
$ ionic build android
Below is the build error:
Error: /home/myapp/platforms/android/gradlew: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred starting process 'Gradle build daemon'
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Gradle version is 3.3

Android SDK and Android Studio located in /usr/local/ folder
You will either have to move it to your home directory (that involves reinstall).
Or run ionic build commands with sudo
sudo ionic build android
You could technically change permissions of the specific sdk and studio folders but it is not advisable especially in /usr directory.

How to run cordova application in the real device?

i'm beginner in development cordova android ,i want to run my application cordova in the real device by when i excute this command cordova build android i found this error :
:CordovaLib:processDebugResources FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':CordovaLib:processDebugResources'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/home/binov1/android-sdk-linux/build-tools/23.0.1/aapt'' finished with non-zero exit value 127
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 29.066 secs
ERROR building one of the platforms: Error code 1 for command: /home/binov1/workElolinkMobile/icooltaxi/platforms/android/gradlew with args: cdvBuildDebug,-b,/home/binov1/workElolinkMobile/icooltaxi/platforms/android/build.gradle,-Dorg.gradle.daemon=true,-Pandroid.useDeprecatedNdk=true
You may not have the required environment or OS to build this project
Error: Error code 1 for command: /home/binov1/workElolinkMobile/icooltaxi/platforms/android/gradlew with args: cdvBuildDebug,-b,/home/binov1/workElolinkMobile/icooltaxi/platforms/android/build.gradle,-Dorg.gradle.daemon=true,-Pandroid.useDeprecatedNdk=true

try
cordova platform add android
cordova platform build android
adb devices (check if your device appears in the list)
cordova run android

Try installing the android sdk v.23.0.1:
cd /home/binov1/android-sdk-linux/tools
./android
The Android SDK Manager window will open, and you need to select SDK Platform API 23 and Android SDK Build-tools. If you want, you can install all SDK Platform and Build-tools of any API version.

ionic build android error when using cordova build --release android

I am trying to build an Ionic project on EC2 but after everything has been installed, I got a build failure error when running:
cordova build --release android
Here is the error message I have received:
:CordovaLib:processReleaseResources FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':CordovaLib:processReleaseResources'.
java.io.IOException: Cannot run program "/home/ec2-user/android/build-tools/22.0.1/aapt": error=2, No such file or directory
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 11.093 secs
I have inspected the folder and I can find the file it's complaining about. So not really sure what went wrong.

It turned out that I need to install 32 bit glibc to execute 64 bit binaries, and running this solved the issue for me.
yum install zlib.i686 libstdc++.i686 ncurses-libs.i686 libgcc.i686

geetting error while running ionic crosswalk integration

i am new to ionic framework, i was unable to get the inspect elements when i debug my application on my android mobile, so i tried installing crosswalk
with the following steps
npm install -g ionic
ionic platform add android
ionic browser add crosswalk
i had followed the steps and even tried uninstalling the application and reverting the crosswalk, but the error remains same. this is the error which i am facing.
* What went wrong:
Execution failed for task ':processArmv7DebugManifest'.
> Manifest merger failed with multiple errors, see logs
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output.
BUILD FAILED
Total time: 41.063 secs
G:\GTM\Ionic\ionic programs\recipes\platforms\android\cordova\node_modules\q\q.j
s:126
throw e;
^
Error code 1 for command: cmd with args: /s /c ""G:\GTM\Ionic\ionic programs\rec
ipes\platforms\android\gradlew" cdvBuildDebug -b "G:\GTM\Ionic\ionic programs\re
cipes\platforms\android\build.gradle" -PcdvBuildArch=arm -Dorg.gradle.daemon=tru
e"
ERROR running one or more of the platforms: Error: cmd: Command failed with exit
code 1
You may not have the required environment or OS to run this project
can anyone help me with this error.
thanks in advance.