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How to set JAVA_HOME on Mac OS X

$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.8.0_66.jdk/Contents/Home

    Download JDK 8 from Oracle WebSite. [jdk-8u74-macosx-x64.dmg for Mac].
    Double click on jdk-8u74-macosx-x64.dmg and follow the screen instructions.
    JDK package will have been installed on /Library/Java/JavaVirtualMachines. In my computer, I have both 8u66 and 8u74 JDK package.

$ ls -l /Library/Java/JavaVirtualMachines

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heroku git:clone -a myapp

heroku login

//Deploy the app
heroku create

//Deploy your code
git push heroku master

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# change file permission

sudo chmod 755 'filename'

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Reference : https://developer.android.com/studio/write/annotations.html#enum-annotations

public class FilterColorDescriptor {
  public static final String FILTER_BLUE = "blue";
  public static final String FILTER_RED = "red";
  public static final String FILTER_GRAY = "gray";

  public final String filterColor;

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Multiple dynamic fields with Retrofit

HashMap<String, String> map = new HashMap<>();
map.put("param1", param1);
map.put("param2", param2);
map.put("param3", param3);

@FormUrlEncoded
@POST("/endpoint/")
Call<BaseResponse> endpoint(@Field("user_name") String userName, @FieldMap HashMap<String, String> hashFields);

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# Built application files
*.apk
*.ap_

# Files for the ART/Dalvik VM
*.dex

# Java class files
*.class

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# Html in TextView
public static Spanned fromHtml(String html){
    Spanned result;
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
       result = Html.fromHtml(html,Html.FROM_HTML_MODE_LEGACY);
    } else {
       result = Html.fromHtml(html);
    }
    return result;
}

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#image

  <img src="./images/kotlin-plugin.png" height="240">
  
  <img src="https://github.com/favicon.ico" height="24">

  <img src="https://github.com/favicon.ico" height="24" width="48">
  
  <p align="center"><img src="./kotlin.png" height="576"></p>
  

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//Removed default animation
overridePendingTransition(0, 0);

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In Terminal:

nano ~/.bash_profile 

Add lines:

export ANDROID_HOME=/YOUR_PATH_TO/android-sdk
export PATH=$ANDROID_HOME/platform-tools:$PATH
export PATH=$ANDROID_HOME/tools:$PATH