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How to Successfully Publish Your App on the App Store or Google Play

As someone who has released many apps starting in 2015 using frameworks such as Cordova and Ionic, and more recently using React Native and Expo, I have learned that the rules for publishing apps can change frequently and can sometimes be challenging to navigate. With that in mind, I want to provide a brief guide to help others navigate the process. While this guide may not cover every aspect of publishing an app, it does cover general tips and information that should be useful for anyone looking to release their app on the App Store or Google Play.

Metadata

Keywords, Description, Screenshots, App Name, Promo Videos

There are significant differences between Apple and Google when it comes to metadata. Apple is generally stricter than Google, so it is advisable to follow Apple's guidelines to ensure the best chances of success on both platforms. Here are some tips to keep in mind:

1. Keep your screenshots and promo videos separat

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{ fontWeight: '100' }, // Thin
{ fontWeight: '200' }, // Ultra Light
{ fontWeight: '300' }, // Light
{ fontWeight: '400' }, // Regular
{ fontWeight: '500' }, // Medium
{ fontWeight: '600' }, // Semibold
{ fontWeight: '700' }, // Bold
{ fontWeight: '800' }, // Heavy
{ fontWeight: '900' }, // Black

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{
  "base_url" : "http://c27a0302.ngrok.io"
}

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public class Wait {

    private static final int CHECK_INTERVAL = 100;
    private static final int TIMEOUT = 10000;

    public interface Condition {
        boolean check();
    }

    private Condition mCondition;

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/**
 * <p>
 * This loader caches the result so that it can be taken later - for example, after configuration
 * was changed and activity is re-created.
 * </p>
 * Created by hiroshi on 2014/12/03.
 */
public abstract class CachedAsyncTaskLoader<T> extends AsyncTaskLoader<T> {
    private T mCached;
    private Throwable mError;

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public class ScaleToFitWidthHeightTransform implements Transformation {

        private int mSize;
        private boolean isHeightScale;

        public ScaleToFitWidthHeightTransform(int size, boolean isHeightScale){
            mSize =size;
            this.isHeightScale = isHeightScale;
        }

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Unless specified otherwise, all of the below tinting applies to both Lollipop and pre-Lollipop using AppCompat v21. To use the support version of these attributes, remove the android namespace.  For instance, "android:colorControlNormal" becomes "colorControlNormal".  These attributes will be propagated to their corresponding attributes within the android namespace for devices running Lollipop.  Any exceptions to this will be noted by including the "android:" prefix.

All Clickable Views:
-----------
* ripple effect (Lollipop only) -- "colorControlHighlight"

Status Bar:
------------
* background (Lollipop only) - "colorPrimaryDark"

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public class RoundedCornerLayout extends FrameLayout {
    private final static float CORNER_RADIUS = 5.0f;

    private Bitmap maskBitmap;
    private Paint paint, maskPaint;
    private float cornerRadius;

    public RoundedCornerLayout(Context context) {
        super(context);
        init(context, null, 0);

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Download the following ZIPs:
    
    ARM Translation Installer v1.1 (http://www.mirrorcreator.com/files/0ZIO8PME/Genymotion-ARM-Translation_v1.1.zip_links)
    
    Download the correct GApps for your Android version:
      Google Apps for Android 5.1 (https://www.androidfilehost.com/?fid=96042739161892865 - gapps-L-4-21-15.zip)
      Google Apps for Android 5.0 (https://www.androidfilehost.com/?fid=95784891001614559 - gapps-lp-20141109-signed.zip)
      Google Apps for Android 4.4.4 (https://www.androidfilehost.com/?fid=23501681358544845 - gapps-kk-20140606-signed.zip)
      Google Apps for Android 4.3 (https://www.androidfilehost.com/?fid=23060877490000124 - gapps-jb-20130813-signed.zip)
      Google Apps for Android 4.2 (https://www.androidfilehost.com/?fid=23060877490000128 - gapps-jb-20130812-signed.zip)

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# Built application files
/*/build/

# Crashlytics configuations
com_crashlytics_export_strings.xml

# Local configuration file (sdk path, etc)
local.properties

# Gradle generated files