React Native

==================================================================

BASIC

==================================================================

REACT REDUX 

1. Promise data in store

Data will be wrong. You can not access props.variable

==================================================================

1. Facebook Login

Ref: https://www.npmjs.com/package/react-native-fbsdk-next

$ yarn add react-native-fbsdk-next
OR npm
$ npm install --save react-native-fbsdk-next

2. Change Emulated Performance - Graphics

- Go to Android > Show  on Disk:

- Open file : config.ini and edit below:

hw.gpu.enabled = yes

hw.gpu.mode = host  //Host: use Hardware 

or
hw.gpu.mode=software (or hardware)

3. How to resolve issue related FLAG_IMMUTABLE 

Decription: Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.

4. Google SignIn SDK is failing by throwing error, A non-recoverable sign in failure occurred -catch error: React Native

Ref: https://stackoverflow.com/questions/53816227/google-signin-sdk-is-failing-by-throwing-error-a-non-recoverable-sign-in-failur

Step 1: cd ./android && ./gradlew signingReport

Step 2: Copy  SHA1 of Task :app:signingReport, Variant: debugAndroidTest, Config: debug

Step 3: Update it the Firebase Console under Project Settings, Android app, add the SHA1

Update support email

Add fingerprint with step below

Step 4: Download the google-services.json, put it in ./android/app

Step 5: Go to Authentication, then Sign-in method, then press Google

Step 6: Take the Web client ID and use that for your GoogleSignin.configure({ webClientId: ... });

Step 7: This Web client ID should be the same as listed in https://console.developers.google.com/apis/credentials?project=<your_project_id> -> Credentials -> OAuth 2 Client ID -> Web Client

5. Check Realm DB Version for Compatible React Native

Ref: https://github.com/realm/realm-js/releases

6. Enable Proguard

Run Proguard to shrink the Java bytecode in release builds.

edit in app/build.gradle

/**

 * Run Proguard to shrink the Java bytecode in release builds.

 */

def enableProguardInReleaseBuilds = true

It will be some error when enable this while run app. Add more to proguard-rules.pro :

# Add any project specific keep options here:

-keep class io.realm.**  { * ;  }

-keep class com.swmansion.reanimated.** { *; }

-keep class com.facebook.hermes.unicode.** { *; }

-keep class com.facebook.jni.** { *; }

-keep class com.facebook.react.turbomodule.** { *; }

-keep public class com.horcrux.svg.** {*;}

is updating...

Read more…

Spring Boot

================================================================

================================================================

Spring solution

================================================================

This article is collection of my experience about Spring. I usually update this when I learn new knowledge.

Read more…