I do the same thing. In `Android Studio` go to Settings, select `Appearance and Behaviour` then `System Settings` then `Android SDK`

You can choose the SDK location at the top.

You&#39;ll need to copy/paste the files to that location to save yourself the downloading time.

Its very simple just copy the `sdk` to wherever you want and then change the `sdk` path in `android studio`. For that just open the **local.properties** file and set the path like this:

    sdk.dir=your path here

To keep the most used simulator in SSD drive and the others used for testing in the slow drive i created Symbolic. They are NTFS objects that appear in a folder as a sub folder but can that point to another folder on another drive.

To create then, move to `C:\Users\&lt;user&gt;\.android\avd` and do this:

    mklink /d W10.1_WXGA_Tablet_API_28.avd d:\androidSimulators\W10.1_WXGA_Tablet_API_28.avd

MDLink info [here][1].

If using Linux based systems you can also do this with linked directories.

For windows 10 users, emulators are stored by default at here:

    C:\Users\&lt;user&gt;\.android\avd

  [1]: https://superuser.com/questions/67870/what-is-the-difference-between-ntfs-hard-links-and-directory-junctions

With a downloaded and installed version of Visual Studio Code 1.2.1, and a 64bit version of node.exe msi placed in my working directory (I am assuming that is correct), how do we add node and npm command line tools to be on our PATH? I am confused in understanding that statement. Where and how do we implement that? I am quoting this requirement directly from the top of this resource page - https://code.visualstudio.com/Docs/runtimes/nodejs

As a result of my current situation, I set a break-point in an app.js file. And when I hit F5, it tells me...

    Cannot find runtime &#39;node&#39; on PATH 

I am completely lost in understanding and fixing this issue in Visual Studio Code.


Cannot find runtime &#39;node&#39; on PATH - Visual Studio Code and Node.js

How can I set a default route in my @Routes route metadata collection?  If you use the angular2 router from @angular/router-deprecated you define the routes in @routeConfig object, which is a collection of route objects, but these route objects have more attributes on them.  For instance they have &#39;name&#39; and &#39;useAsDefualt&#39; attributes whereas the routes defined out of @angular/router do not.  I would like to write my new app using the new router, but how do i use the new router and set a default route?

This is my main app component which defines my routes:  

    import { Component } from &#39;@angular/core&#39;;
    import { DashboardComponent } from &#39;./dashboard/dashboard.component&#39;;
    import { ConfigManagerComponent } from &#39;./configManager/configManager.component&#39;;
    import { ApplicationMgmtComponent } from &#39;./applicationMgmt/applicationMgmt.component&#39;;
    import { MergeComponent } from &#39;./merge/merge.component&#39;;
    
    import { ROUTER_DIRECTIVES, Routes } from &#39;@angular/router&#39;;
    
    
    @Component({
        selector: &#39;app-container&#39;,
        templateUrl: &#39;app/app.component.html&#39;,
        directives: [ROUTER_DIRECTIVES]
    })
    
    @Routes([
    
            { path: &#39;/Dashboard&#39;, component: DashboardComponent },
            { path: &#39;/ConfigManager&#39;, component: ConfigManagerComponent },
            { path: &#39;/Merge&#39;, component: MergeComponent },
            { path: &#39;/ApplicationManagement&#39;, component: ApplicationMgmtComponent }
    ])
    
    export class AppComponent { }


The route definitions seem to be working fine, when I click on anchor tags like this one:

 

    &lt;li class=&quot;nav hidden-xs&quot;&gt;&lt;a [routerLink]=&quot;[&#39;./Dashboard&#39;]&quot;&gt;Dashboard&lt;/a&gt;/li&gt;

 It transitions to the associated route.  My only issue is that when my app loads it doesn&#39;t have a route active.  How do i define a default route that is active when my app bootstraps?



Thanks!

Angular2 router (@angular/router), how to set default route?

My windows is on a 128GB ssd hard drive and its running out of space. the folder
`C:\Users\User\AppData\Local\Android` has 2 folders `android-sdk` and `sdk` folders that use about 30GB of space.

Is it possible to move these folders to an external hard drive?

If it is possible what changes should I make in the android studio?

Moving android-sdk and sdk folders to another drive

My windows is on a 128GB ssd hard drive and its running out of space. the folder
<code>C:\Users\User\AppData\Local\Android</code> has 2 folders <code>android-sdk</code> and <code>sdk</code> folders that use about 30GB of space.
Is it possible to move these folders to an external hard drive?
If it is possible what changes should I make in the android studio?

I made a Horizontal RecyclerView and it works fine(thanks to [this][1]) but the direction of scroll and data are expand from left to right; then How can I change the RecyclerView scroll direction like in the picture below?

[![enter image description here][2]][2]


My Code:

    StaggeredGridLayoutManager staggeredGridLayoutManager =
                    new StaggeredGridLayoutManager(
                            2, //The number of Columns in the grid
                            LinearLayoutManager.HORIZONTAL);


  [1]: http://www.truiton.com/2015/02/android-recyclerview-tutorial/
  [2]: https://i.stack.imgur.com/i022L.jpg

Android Horizontal RecyclerView scroll Direction

I&#39;m bloqued creating a Firebase Database. 

I&#39;m trying to model a class. A very simple class:

    package com.glups.model;

    import com.google.firebase.database.IgnoreExtraProperties;
    
    @IgnoreExtraProperties
    public class AlumnoFB {

        private String nombre;
        private String apellidos;
        private String telefono;
        private String email;
        private Boolean tieneWhatsapp;
        private Boolean tieneTelegram;
        private Boolean tieneHangouts;
        private Long formaPago;
        private Double ratioHora;
        private Double precioHora;
        private Double horasCompensadas;
    
        public AlumnoFB() {
            // Default constructor required for calls to DataSnapshot.getValue(User.class)
        }
    
        public AlumnoFB(String nombre,
                        String apellidos,
                        String telefono,
                        String email,
                        Boolean tieneWhatsapp,
                        Boolean tieneTelegram,
                        Boolean tieneHangouts,
                        Long formaPago,
                        Double ratioHora,
                        Double precioHora,
                        Double horasCompensadas) {
            this.nombre = nombre;
            this.apellidos = apellidos;
            this.telefono = telefono;
            this.email = email;
            this.tieneWhatsapp = tieneWhatsapp;
            this.tieneTelegram = tieneTelegram;
            this.tieneHangouts = tieneHangouts;
            this.formaPago = formaPago;
            this.ratioHora = ratioHora;
            this.precioHora = precioHora;
            this.horasCompensadas = horasCompensadas;
        }
    }

that is almost like a sample class from Firebase.

Application user obtained from getUser() has been logged on Firebase.

When I call SetValue:

    AlumnoFB alumno = new AlumnoFB(&quot;&quot;, &quot;&quot;, &quot;&quot;, &quot;&quot;, false, false, false, ((Integer)FormaPago.INT_NO_PAGADO).longValue(), 0.0, 0.0, 0.0);
        mDatabase.child(&quot;AlumnoFB&quot;).child(ControlClasesFirebase.getUser().getUid()).setValue(alumno) ;

A fatal exception raises.

    06-10 10:17:37.179 13841-13841/com.glups.controlclases E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.glups.controlclases, PID: 13841 com.google.firebase.database.DatabaseException: No properties to serialize found on class com.glups.model.AlumnoFB
    at com.google.android.gms.internal.zzaix$zza.&lt;init&gt;(Unknown Source)
    at com.google.android.gms.internal.zzaix.zzj(Unknown Source)
    at com.google.android.gms.internal.zzaix.zzaw(Unknown Source)
    at com.google.android.gms.internal.zzaix.zzav(Unknown Source)
    at com.google.firebase.database.DatabaseReference.zza(Unknown Source)
    at com.google.firebase.database.DatabaseReference.setValue(Unknown Source)
    at com.glups.controlclases.MainActivity$4.onClick(MainActivity.java:305)
    at android.view.View.performClick(View.java:4780)
    at android.view.View$PerformClick.run(View.java:19866)
    at android.os.Handler.handleCallback(Handler.java:739)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5258)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

I&#39;ve checked types, and all are accepted. What&#39;s wrong?

Firebase No properties to serialize found on class

I am a UX architect working with a team of Android developers that are mostly junior. We are having issues properly setting line height in Android. 

We are using the Material Design spec as our guide for our app. In particular, you can see line height specs here:

https://material.google.com/style/typography.html#typography-line-height

Let&#39;s use Body 2 as our example. The spec says the type is 13sp or 14sp, and the leading (line height - same thing) should be 24dp. 

Here&#39;s the problem: these devs are telling me there is no such way to set line height like that in the code. Instead, they are telling me to measure the distance between the two lines of text and give them that measure - let&#39;s say it&#39;s 4dp. They want this for each style of text we are using. 

We are using a Sketch &gt; Zepelin flow for spec. 

It seems odd to me to be able to create a font style (which could easily be class/style in the code) that is 13sp with 24dp leading, and not be able to set the leading, but instead have to add a 3rd measure to the mix. There is no place in Sketch or Zepelin for such a measure &quot;between lines.&quot;

Is this really the way it is done, or is there a proper way to set line height? 

How to properly set line height for Android?

It&#39;s my first time using FCM.

I download a sample from [firebase/quickstart-android][1] and I install the FCM Quickstart. But I can&#39;t get any token from the log even hit the **LOG TOKEN button** in the app.

Then I try to send a message with Firebase console and set to target my app package name. I got incoming messages.

I want to know can FCM be used?GCM everything is ok.








Solution:

Because I am not an Android developer, just a backend developer. So it takes me some time to solve it. In my opinion, there`re some bugs in the sample app.

[![enter image description here][2]][2]


Code：


RegistrationIntentService.java

    public class RegistrationIntentService extends IntentService {
    
        private static final String TAG = &quot;RegIntentService&quot;;
    
    
        public RegistrationIntentService() {
            super(TAG);
        }
    
        @Override
        protected void onHandleIntent(Intent intent) {
            String token = FirebaseInstanceId.getInstance().getToken();
            Log.i(TAG, &quot;FCM Registration Token: &quot; + token);
        }
    }


MyFirebaseInstanceIDService.java

    public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
    
        private static final String TAG = &quot;MyFirebaseIIDService&quot;;
    
        /**
         * Called if InstanceID token is updated. This may occur if the security of
         * the previous token had been compromised. Note that this is called when the InstanceID token
         * is initially generated so this is where you would retrieve the token.
         */
        // [START refresh_token]
        @Override
        public void onTokenRefresh() {
            // Get updated InstanceID token.
    //        String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    //        Log.d(TAG, &quot;Refreshed token: &quot; + refreshedToken);
    //
    //        // TODO: Implement this method to send any registration to your app&#39;s servers.
    //        sendRegistrationToServer(refreshedToken);
    //
            Intent intent = new Intent(this, RegistrationIntentService.class);
            startService(intent);
        }
        // [END refresh_token]
    
        /**
         * Persist token to third-party servers.
         * &lt;p&gt;
         * Modify this method to associate the user&#39;s FCM InstanceID token with any server-side account
         * maintained by your application.
         *
         * @param token The new token.
         */
        private void sendRegistrationToServer(String token) {
            // Add custom implementation, as needed.
        }
    }


Add this in the MainActivity.java.

     Intent intent = new Intent(this, RegistrationIntentService.class);
            startService(intent);



After do above，you get the Token in Logcat. But finally, I find a **convenient way** to get it.**Just use debug mode to install the sample app** and you can get the token when you first time to install it.

But I don&#39;t know why it can&#39;t print the log when I install it. Maybe be related to the mobile system.


And then why I can&#39;t get the Notification. **FirebaseMessagingService.onMessageReceived** did not call **sendNotification**
  


  [1]: https://github.com/firebase/quickstart-android
  [2]: http://i.stack.imgur.com/QKPFh.png

Firebase (FCM) how to get token

I get the following error and I am using Android studio 2.2 Preview 3. I searched Google but couldn&#39;t find any resources.

    Error: This view is not constrained, it only has design time positions, so it will jump to (0,0) unless you add constraints

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/nCbmX.png

    &lt;TextView
            android:layout_width=&quot;384dp&quot;
            android:layout_height=&quot;207dp&quot;
            android:textAppearance=&quot;?android:attr/textAppearanceLarge&quot;
            android:text=&quot;@string/calc_default_display&quot;
            android:id=&quot;@+id/textView&quot;
            android:background=&quot;#ffffff&quot;
            android:layout_margin=&quot;0dp&quot;
            android:gravity=&quot;bottom|end&quot;
            android:textSize=&quot;70sp&quot;
            android:nestedScrollingEnabled=&quot;false&quot;
            android:maxLines=&quot;2&quot;
            android:maxLength=&quot;17&quot;
            tools:layout_editor_absoluteX=&quot;0dp&quot;
            tools:layout_editor_absoluteY=&quot;0dp&quot; /&gt;

This view is not constrained

[![enter image description here][1]][1]New Layout editor in Android Studio 2.2 keeps showing this error on views like EditText and Buttons. kindly help.Also, any links that help in onboarding with the new constraint layout would be appreciated.

code:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;android.support.constraint.ConstraintLayout
        android:id=&quot;@+id/activity_main&quot;
        xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        xmlns:app=&quot;http://schemas.android.com/apk/res-auto&quot;
        xmlns:tools=&quot;http://schemas.android.com/tools&quot;
        android:layout_width=&quot;match_parent&quot;
        android:layout_height=&quot;match_parent&quot;
        tools:context=&quot;com.set.email.MainActivity&quot;
        tools:layout_editor_absoluteX=&quot;0dp&quot;
        tools:layout_editor_absoluteY=&quot;81dp&quot;&gt;
    
        &lt;TextView
            android:text=&quot;To:&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            tools:layout_editor_absoluteX=&quot;7dp&quot;
            tools:layout_editor_absoluteY=&quot;4dp&quot;
            android:id=&quot;@+id/textTo&quot;/&gt;
    
        &lt;EditText
            android:layout_width=&quot;fill_parent&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:inputType=&quot;textEmailAddress&quot;
            android:ems=&quot;10&quot;
            tools:layout_editor_absoluteX=&quot;0dp&quot;
            tools:layout_editor_absoluteY=&quot;24dp&quot;
            android:id=&quot;@+id/editTo&quot;
            android:textAppearance=&quot;@android:style/TextAppearance.DeviceDefault.Medium&quot;/&gt;
    
        &lt;EditText
            android:layout_width=&quot;384dp&quot;
            android:layout_height=&quot;42dp&quot;
            android:inputType=&quot;textPersonName&quot;
            android:ems=&quot;10&quot;
            tools:layout_editor_absoluteX=&quot;0dp&quot;
            tools:layout_editor_absoluteY=&quot;94dp&quot;
            android:id=&quot;@+id/editSubject&quot;
            android:textAppearance=&quot;@android:style/TextAppearance.DeviceDefault.Medium&quot;/&gt;
    
        &lt;EditText
            android:layout_width=&quot;384dp&quot;
            android:layout_height=&quot;273dp&quot;
            android:inputType=&quot;textPersonName&quot;
            android:ems=&quot;10&quot;
            tools:layout_editor_absoluteX=&quot;0dp&quot;
            tools:layout_editor_absoluteY=&quot;179dp&quot;
            android:id=&quot;@+id/editMessage&quot;
            app:layout_constraintLeft_toLeftOf=&quot;@+id/activity_main&quot;
            tools:layout_constraintLeft_creator=&quot;50&quot;
            android:textAppearance=&quot;@android:style/TextAppearance.DeviceDefault.Medium&quot;/&gt;
    
        &lt;Button
            android:text=&quot;Send&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            tools:layout_editor_absoluteX=&quot;140dp&quot;
            tools:layout_editor_absoluteY=&quot;454dp&quot;
            android:id=&quot;@+id/btnSend&quot;
            app:layout_constraintLeft_toLeftOf=&quot;@+id/editMessage&quot;
            tools:layout_constraintLeft_creator=&quot;0&quot;
            app:layout_constraintRight_toRightOf=&quot;@+id/activity_main&quot;
            android:layout_marginEnd=&quot;16dp&quot;
            tools:layout_constraintRight_creator=&quot;0&quot;
            android:textAppearance=&quot;@android:style/TextAppearance.DeviceDefault.Medium&quot;/&gt;
    
       
    &lt;/android.support.constraint.ConstraintLayout&gt;

  [1]: http://i.stack.imgur.com/0gpVY.png 

  


This view is not constrained vertically. At runtime it will jump to the left unless you add a vertical constraint

I have a plugin error in my logcat

       10:08:28 PM Plugin Error
            Problems found loading plugins:
            Plugin &quot;Google Analytics Uploader&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Plugin &quot;SDK Updater&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Plugin &quot;Android NDK Support&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Plugin &quot;Google App Indexing&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Plugin &quot;Google Cloud Tools For Android Studio&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Plugin &quot;Google Cloud Testing&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Plugin &quot;Google Services&quot; was not loaded: required plugin &quot;Android Support&quot; is disabled.
            Disable not loaded plugins
            Enable Android Support
            Open plugin manager
     10:08:32 PM Error Loading Project: Cannot load 3 facets Details...

This happened after I left my laptop to sleep and when I opened android studio, this error popped out. Now I cannot run my project.

Plugin Error: required plugin &quot;Android Support&quot; is disabled

I use Android Studio and recently got the error:

&gt; Error:Execution failed for task &#39;:app:compileDebugJavaWithJavac&#39;.
&gt; compileSdkVersion &#39;android-24&#39; requires JDK 1.8 or later to compile.

But I have JDK 1.8 installed already:


&gt; :\Users\..&gt;java -version   
&gt; java version &quot;1.8.0_91&quot; Java(TM) SE Runtime   
&gt; Environment (build 1.8.0_91-b15) Java HotSpot(TM) 64-Bit Server VM  
&gt; (build 25.91-b15, mixed mode)

How to fix it? Thanks

&#39;android-24&#39; requires JDK 1.8 or later to compile

**Problem :**

    Error:Could not find com.android.support.constraint:constraint-layout:1.0.0-alpha2.
    Required by:
    myapp:app:unspecified

**Background :**
Android Studio 2.2 P 1

Gradle Sync failed could not find constraint-layout:1.0.0-alpha2

I am working on a project in android studio and would like to revert to a previous push. I attempted     
VCS =&gt; Git =&gt; Reset Head (Hard)    
but my project in Android Studio is unchanged, likely because I&#39;m doing something wrong. I would like to revert the project in Android Studio to a specific earlier commit that I&#39;ve pushed and I see on github. I do not care about any changes that I have made since the earlier push.   
Additionally, I would like this to be done through the GUI within Android Studio if possible.

How to revert project back to a previous commit in android studio

Since gradle android plugins [2.2-alpha4][1]: 

&gt; Gradle will attempt to download missing SDK packages that a project
&gt; depends on

Which is amazingly cool and was know to be a [JakeWharton project][2].

But, to download the SDK library you need to: accept the license agreements or gradle tells you:

&gt; You have not accepted the license agreements of the following SDK
&gt; components: [Android SDK Build-Tools 24, Android SDK Platform 24].
&gt; Before building your project, you need to accept the license
&gt; agreements and complete the installation of the missing components
&gt; using the Android Studio SDK Manager. Alternatively, to learn how to
&gt; transfer the license agreements from one workstation to another, go to
&gt; http://d.android.com/r/studio-ui/export-licenses.html

And this is a problem because I would love to install all sdk dependencies while doing a `gradle build`.

I am looking for a solution to automatically accept all licenses. Maybe a gradle script ?
Do you have any ideas ?


  [1]: https://sites.google.com/a/android.com/tools/tech-docs/new-build-system
  [2]: https://github.com/JakeWharton/sdk-manager-plugin


Automatically accept all SDK licences

I just installed the latest SDK(10.0.10586.0) and was wondering if I can delete the libraries from the older Windows 10 SDKs(10.0.10240.0 and 10.0.10150.0)?   

Or is there a safe way or a program to do this?

Is it OK to delete older versions of Windows 10 SDK?

I&#39;m getting the following error when trying to install an android platform on a Cordova project. I&#39;ve been following this guide: https://cordova.apache.org/docs/en/latest/guide/cli/

Error occurs when executing the following: $ cordova platform add android --save

&gt; A problem occurred configuring root project &#39;android&#39;.
&gt; You have not accepted the license agreements of the following SDK components:   [Android SDK Platform 24].

I&#39;ve searched all over for ways to **accept the license agreement of Android SDK Platform 24**, but no real luck. 

Thank you ahead of time.

Can&#39;t accept license agreement Android SDK Platform 24

I updated android studio 2.3 and there is a bug, gradle doesn&#39;t build and it keeps giving me the same error for all projects. 

    Error:Failed to open zip file.
    Gradle&#39;s dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
    &lt;a href=&quot;syncProject&quot;&gt;Re-download dependencies and sync project (requires network)&lt;/a&gt;
    &lt;a href=&quot;syncProject&quot;&gt;Re-download dependencies and sync project (requires network)&lt;/a&gt;

I have already searched for a solution, but have not found any. I tried: 

    Invalidate Caches / Restart...

but nothing has changed.


Error:Failed to open zip file. Gradle&#39;s dependency cache may be corrupt

I&#39;ve read many articles, including [this one][1], yet I can&#39;t still figure out what&#39;s the difference, and they have not explained it either in simple terms or at all.

Can someone please clarify what&#39;s the difference between .NET SDK and .NET Runtime?

Update: Using comparisons would be very appreciated. Analogy alongside simple English is highly educational.


  [1]: https://jonhilton.net/2017/04/17/making-sense-of-the-different-versions-of-net-core-runtime-and-sdk/

Content Type	Original Author	Original Content on Stackoverflow
Question	Ashkan Mobayen Khiabani	View Question on Stackoverflow
Solution 1 - Android	SQLiteNoob	View Answer on Stackoverflow
Solution 2 - Android	Nongthonbam Tonthoi	View Answer on Stackoverflow
Solution 3 - Android	MiguelSlv	View Answer on Stackoverflow

Moving android-sdk and sdk folders to another drive

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Angular2 router (@angular/router), how to set default route?

Cannot find runtime 'node' on PATH - Visual Studio Code and Node.js

Attributions