The `google()` repository is a shortcut to Google&#39;s maven repository. It was introduced in Gradle 4.x+. The actual repository URL used is `&quot;https://dl.google.com/dl/android/maven2/&quot; as specified [here.][1] https://maven.google.com actually points to the same repository.

However, if you are planning to use the `google()` shortcut, you need Gradle 4.x+, Android Studio 3.x+ and Gradle plugin for Android 3.x+.


  [1]: https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/dsl/RepositoryHandler.html#google()

Small correction to the answer above. 
If you try to go to https://dl.google.com/dl/android/maven2/ it gives you a 404.
The correct url to google maven repository is: 

https://dl.google.com/dl/android/maven2/index.html
or just 
https://maven.google.com

Here you can check all the supported libraries and the latest versions.

I am trying to open, build and run someone else&#39;s Angular 4 project but I am not able to view the project when I run it my way. I don&#39;t see what is going wrong or what I should do now. I already had everything in place to use NPM and NodeJS

The steps I took were:

- Open up the project
- npm install
- ng serve

The project compiles the right way. (I have an own Angular app and I know how this looks like) The console is showing: 
&gt;&#39;** NG Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200 **&#39;.

Then, when I opened up a web browser, I navigated to localhost:4200 and a web page with the following text were shown: 
&gt; &#39;Cannot GET /&#39;

And on the console was the following text:
&gt; &#39;GET http://localhost:4200/ 404 (Not Found)&#39;

The project should work fine but I am not able to navigate to a working URL on the web page. Routing is set-up another way as I am used to doing this. In app.module.ts the following is implemented:

app.module.ts

    const appRoutes: Routes = [
    { path: &#39;&#39;,   redirectTo: &#39;tree&#39;, pathMatch: &#39;full&#39; },
    { path: &#39;admin&#39;, component: AdminPanelComponent, canActivate: [AuthGuard],
    children: [{path:&#39;&#39;, component: PanelComponent},{path: &#39;add&#39;, component: 
    AddTreeComponent}, {path:&#39;manage-trees&#39;, component:ManageTreesComponent}, 
    {path:&#39;manage-users&#39;, component: ManageUsersComponent}, {path:&#39;view-trees&#39;, 
    component: ViewTreeComponent}]},
    {path:&#39;tree&#39;, component: TreeComponent},
    {path:&#39;error&#39;, component: ErrorComponent},
    {path:&#39;unauthorized&#39;, component: UnauthorizedComponent},
    {path:&#39;login&#39;, component: LoginComponent},
    {path:&#39;entire-tree&#39;, component: EntireTreeComponent},
    { path: &#39;**&#39;, component: PageNotFoundComponent },
    ];

Also opening up a web page like; localhost:4200/tree does not work. When I let angular stop serving the web page, the web page displays: &quot;this site can&#39;t be reached&#39;. So I think there is running something at localhost:4200... Also, another project of this person behaves the same way.

[![enter image description here][1]][1]

Does anybody know what is going on? 

**EDIT**

app.module.ts

    RouterModule.forRoot(appRoutes, { useHash: true })

Package.json

    {
    &quot;name&quot;: &quot;xxx&quot;,
    &quot;version&quot;: &quot;0.0.0&quot;,
    &quot;license&quot;: &quot;MIT&quot;,
    &quot;scripts&quot;: {
    &quot;ng&quot;: &quot;ng&quot;,
    &quot;start&quot;: &quot;ng serve&quot;,
    &quot;build&quot;: &quot;ng build&quot;,
    &quot;test&quot;: &quot;ng test&quot;,
    &quot;lint&quot;: &quot;ng lint&quot;,
    &quot;e2e&quot;: &quot;ng e2e&quot;
    },
    &quot;private&quot;: true,
    &quot;dependencies&quot;: {
    &quot;@angular/animations&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/common&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/compiler&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/core&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/forms&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/http&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/platform-browser&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/platform-browser-dynamic&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/router&quot;: &quot;^4.0.0&quot;,
    &quot;angular-oauth2-oidc&quot;: &quot;^1.0.20&quot;,
    &quot;angular-polyfills&quot;: &quot;^1.0.1&quot;,
    &quot;angular2-jwt&quot;: &quot;^0.2.3&quot;,
    &quot;angular2-spinner&quot;: &quot;^1.0.10&quot;,
    &quot;bootstrap&quot;: &quot;^3.3.7&quot;,
    &quot;core-js&quot;: &quot;^2.4.1&quot;,
    &quot;ngx-bootstrap&quot;: &quot;^1.8.0&quot;,
    &quot;rxjs&quot;: &quot;^5.1.0&quot;,
    &quot;zone.js&quot;: &quot;^0.8.4&quot;
    },
    &quot;devDependencies&quot;: {
    &quot;@angular/cli&quot;: &quot;1.2.4&quot;,
    &quot;@angular/compiler-cli&quot;: &quot;^4.0.0&quot;,
    &quot;@angular/language-service&quot;: &quot;^4.0.0&quot;,
    &quot;@types/jasmine&quot;: &quot;2.5.45&quot;,
    &quot;@types/node&quot;: &quot;~6.0.60&quot;,
    &quot;codelyzer&quot;: &quot;~3.0.1&quot;,
    &quot;jasmine-core&quot;: &quot;~2.6.2&quot;,
    &quot;jasmine-spec-reporter&quot;: &quot;~4.1.0&quot;,
    &quot;karma&quot;: &quot;~1.7.0&quot;,
    &quot;karma-chrome-launcher&quot;: &quot;~2.1.1&quot;,
    &quot;karma-cli&quot;: &quot;~1.0.1&quot;,
    &quot;karma-jasmine&quot;: &quot;~1.1.0&quot;,
    &quot;karma-jasmine-html-reporter&quot;: &quot;^0.2.2&quot;,
    &quot;karma-coverage-istanbul-reporter&quot;: &quot;^1.2.1&quot;,
    &quot;protractor&quot;: &quot;~5.1.2&quot;,
    &quot;ts-node&quot;: &quot;~3.0.4&quot;,
    &quot;tslint&quot;: &quot;~5.3.2&quot;,
    &quot;typescript&quot;: &quot;~2.3.3&quot;
     }
    }


I also see an icon next to the tab name with the label: &quot;Error&quot;.

**OBSERVATION:**

New observation:

After I ran `npm install -g angular-cli` I wasn&#39;t able to run `ng serve`. (You have to be inside an angular-cli project in order to use the build command after reinstall of angular-cli)

Then I ran `npm install -g @angular/cli@latest` and I was able to use `ng serve` again. 

**OBSERVATION 2:**

After building the app with: &#39;ng build ...&#39; there is no index.html in the &#39;dist&#39; folder... When I set the website online, there is just a folder structure instead of a nice website. I think that&#39;s because there is no index.html.


  [1]: https://i.stack.imgur.com/PKZlU.png

Angular: Cannot Get /

What is the difference between `ActivatedRouteSnapshot` and `ActivatedRoute` in Angular 4? It&#39;s my understanding that `ActivatedRouteSnapshot` is a child of `ActivatedRoute`, meaning that `ActivatedRoute` contains `ActivatedRouteSnapshot`.

Incidentally, I tried running a Google search for an answer to this question, but I didn&#39;t find any of the search results to be understandable.

Thank you!

What is the difference between ActivatedRoute and ActivatedRouteSnapshot in Angular4

Is there any difference between google() and maven { url &#39;https://maven.google.com&#39; } in build.gradle file and if there is any, what is it?

    allprojects {
        repositories {
            jcenter()
            maven { url &#39;https://maven.google.com&#39; }
            // OR
            google()
        }
    }


Difference between google() and maven { url &#39;https://maven.google.com&#39; }

Is there any difference between google() and maven { url '<a href="https://maven.google.com&#x27;" target="_blank" rel="noopener noreferrer">https://maven.google.com'</a>; } in build.gradle file and if there is any, what is it?
<pre><code class="hljs language-rust">allprojects {
 repositories {
 jcenter()
 maven { url 'https://maven.google.com' }
 // OR
 google()
 }
}
</code></pre>

I couldn&#39;t figure out why `LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest, this);` &quot;FusedLocationApi&quot; is cross out and point at it saying is deprecated.
[Click here to view Image][1]


    import android.location.Location;
    import android.location.LocationListener;
    import android.support.annotation.NonNull;
    import android.support.annotation.Nullable;
    import android.support.v4.app.FragmentActivity;
    import android.os.Bundle;
    
    import com.google.android.gms.common.ConnectionResult;
    import com.google.android.gms.common.api.GoogleApiClient;
    import com.google.android.gms.location.LocationRequest;
    import com.google.android.gms.location.LocationServices;
    import com.google.android.gms.maps.CameraUpdateFactory;
    import com.google.android.gms.maps.GoogleMap;
    import com.google.android.gms.maps.OnMapReadyCallback;
    import com.google.android.gms.maps.SupportMapFragment;
    import com.google.android.gms.maps.model.LatLng;
    import com.google.android.gms.maps.model.MarkerOptions;
    
    public class MaintainerMapActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener{

    private GoogleMap mMap;
    GoogleApiClient mGoogleApiClient;
    Location mLastLocaton;
    LocationRequest mLocationRequest;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maintainer_map2);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    }


    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        // Add a marker in Sydney and move the camera
        LatLng sydney = new LatLng(-34, 151);
        mMap.addMarker(new MarkerOptions().position(sydney).title(&quot;Marker in Sydney&quot;));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
    }

    @Override
    public void onLocationChanged(Location location) {

    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }

    @Override
    public void onConnected(@Nullable Bundle bundle) {
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(1000);
        mLocationRequest.setFastestInterval(1000);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest, this);
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

    }
    }


  [1]: https://i.stack.imgur.com/mML1U.jpg

Android LocationServices.FusedLocationApi deprecated

Seems like `javax.activation` package is deprecated in Java 9.
Oracle migration guide proposes to use `--add-modules java.activation` option during JVM start. 

However, I would like to avoid this and replace `javax.activation` package&#39;s classes, as it is deprecated and will be removed in future java versions. I suppose, there should be some kind of alternative for `javax.activation`. If there is any available, what is it?



What is the replacement for javax.activation package in java 9?

What&#39;s the difference between ***requires*** and ***requires transitive*** module statements in module declaration?&lt;br&gt;&lt;br&gt;
For example:

    module foo {
        requires java.base;
        requires transitive java.compiler;
    }

What&#39;s the difference between requires and requires transitive statements in Java 9?

In Java it works by accepting an object which implements runnable :

    Thread myThread = new Thread(new myRunnable())

where `myRunnable` is a class implementing `Runnable`. 

But when I tried this in Kotlin, it doesn&#39;t seems to work:

    var myThread:Thread = myRunnable:Runnable

How to initialize a Thread in Kotlin?

As written in [*JEP 280: Indify String Concatenation*][1]:

&gt;Change the static `String`-concatenation bytecode sequence generated by `javac` to use `invokedynamic` calls to JDK library functions. This will enable future optimizations of `String` concatenation without requiring further changes to the bytecode emmited by `javac`.

Here I want to understand what the use of `invokedynamic` calls is and how bytecode concatenation is different from `invokedynamic`?

  [1]: http://openjdk.java.net/jeps/280

How is String concatenation implemented in Java 9?

I have 2 TextViews as in the xml below.
If I hide the `textView2` at runtime, I lose the bottom margin.
How can I keep the bottom margin between `textView` and parent to be 16dp when the `textView2` is gone.

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;android.support.constraint.ConstraintLayout
    xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    xmlns:app=&quot;http://schemas.android.com/apk/res-auto&quot;
    android:layout_width=&quot;match_parent&quot;
    android:layout_height=&quot;wrap_content&quot;&gt;

      &lt;TextView
          android:id=&quot;@+id/textView&quot;
          android:layout_width=&quot;0dp&quot;
          android:layout_height=&quot;wrap_content&quot;
          android:layout_marginBottom=&quot;16dp&quot;
          android:layout_marginEnd=&quot;8dp&quot;
          android:layout_marginStart=&quot;8dp&quot;
          android:layout_marginTop=&quot;8dp&quot;
          android:text=&quot;abc&quot;
          app:layout_constraintBottom_toTopOf=&quot;@+id/textView2&quot;
          app:layout_constraintEnd_toEndOf=&quot;parent&quot;
          app:layout_constraintStart_toStartOf=&quot;parent&quot;
          app:layout_constraintTop_toTopOf=&quot;parent&quot;
          app:layout_constraintVertical_chainStyle=&quot;packed&quot;
          /&gt;

      &lt;TextView
          android:id=&quot;@+id/textView2&quot;
          android:layout_width=&quot;0dp&quot;
          android:layout_height=&quot;wrap_content&quot;
          android:layout_marginBottom=&quot;32dp&quot;
          android:layout_marginEnd=&quot;8dp&quot;
          android:layout_marginStart=&quot;8dp&quot;
          android:text=&quot;xyz&quot;
          app:layout_constraintBottom_toBottomOf=&quot;parent&quot;
          app:layout_constraintEnd_toEndOf=&quot;parent&quot;
          app:layout_constraintStart_toStartOf=&quot;parent&quot;
          app:layout_constraintTop_toBottomOf=&quot;@+id/textView&quot;
          app:layout_constraintVertical_chainStyle=&quot;packed&quot;/&gt;
    &lt;/android.support.constraint.ConstraintLayout&gt;

keep the margin when the referenced view is gone in ConstraintLayout

I&#39;m in trouble since yesterday. In my internship I faced the following build error, but I couldn&#39;t understand why :

    $ cordova build android

    [...]

    FAILURE: Build failed with an exception.

    * What went wrong:
    Execution failed for task &#39;:transformClassesWithDexForDebug&#39;.
    &gt; com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lorg/apache/cordova/BuildHelper;

    * 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: 3.379 secs
    Error: /home/thor/Projects/App_CDP/platforms/android/gradlew: Command failed with exit code 1 Error output:
    Note: Some input files use or override a deprecated API.
    Note: Recompile with -Xlint:deprecation for details.
    Note: Some input files use unchecked or unsafe operations.
    Note: Recompile with -Xlint:unchecked for details.

    FAILURE: Build failed with an exception.

    * What went wrong:
    Execution failed for task &#39;:transformClassesWithDexForDebug&#39;.
    &gt; com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lorg/apache/cordova/BuildHelper;

    * Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.


Here is the output of `cordova plugins list`, I don&#39;t have the support-v4/v13 conflict as you can see :

    $ cordova plugin list
    com.googlemaps.ios 2.2.0-fixed &quot;Google Maps SDK for iOS&quot;
    com.moust.cordova.videoplayer 1.0.1 &quot;Video Player&quot;
    cordova-plugin-camera 2.4.1 &quot;Camera&quot;
    cordova-plugin-compat 1.1.0 &quot;Compat&quot;
    cordova-plugin-console 1.0.5 &quot;Console&quot;
    cordova-plugin-device 1.1.4 &quot;Device&quot;
    cordova-plugin-facebook4 1.9.1 &quot;Facebook Connect&quot;
    cordova-plugin-file 4.0.0 &quot;File&quot;
    cordova-plugin-file-transfer 1.6.3 &quot;File Transfer&quot;
    cordova-plugin-geolocation 2.4.3 &quot;Geolocation&quot;
    cordova-plugin-googlemaps 1.4.0 &quot;phonegap-googlemaps-plugin&quot;
    cordova-plugin-inappbrowser 1.7.1 &quot;InAppBrowser&quot;
    cordova-plugin-splashscreen 4.0.3 &quot;Splashscreen&quot;
    cordova-plugin-statusbar 2.2.2 &quot;StatusBar&quot;
    cordova-plugin-whitelist 1.3.1 &quot;Whitelist&quot;
    ionic-plugin-keyboard 2.2.1 &quot;Keyboard&quot;
    {}

Here are also some more informations:

    $ cordova -v
    7.0.1

    $ ionic -v
    2.1.4


Multiple dex files define Lorg/apache/cordova/BuildHelper

Using the [Fonts in XML][1] feature you can specify various font weights for a font family. For example:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;font-family xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
                 xmlns:app=&quot;http://schemas.android.com/apk/res-auto&quot;&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_regular&quot; android:fontWeight=&quot;400&quot; android:fontStyle=&quot;normal&quot;
            app:font=&quot;@font/archivo_narrow_regular&quot; app:fontWeight=&quot;400&quot; app:fontStyle=&quot;normal&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_regular_italic&quot; android:fontWeight=&quot;400&quot; android:fontStyle=&quot;italic&quot;
            app:font=&quot;@font/archivo_narrow_regular_italic&quot; app:fontWeight=&quot;400&quot; app:fontStyle=&quot;italic&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_medium&quot; android:fontWeight=&quot;500&quot; android:fontStyle=&quot;normal&quot;
            app:font=&quot;@font/archivo_narrow_medium&quot; app:fontWeight=&quot;500&quot; app:fontStyle=&quot;normal&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_medium_italic&quot; android:fontWeight=&quot;500&quot; android:fontStyle=&quot;italic&quot;
            app:font=&quot;@font/archivo_narrow_medium_italic&quot; app:fontWeight=&quot;500&quot; app:fontStyle=&quot;italic&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_semibold&quot; android:fontWeight=&quot;600&quot; android:fontStyle=&quot;normal&quot;
            app:font=&quot;@font/archivo_narrow_semibold&quot; app:fontWeight=&quot;600&quot; app:fontStyle=&quot;normal&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_semibold_italic&quot; android:fontWeight=&quot;600&quot; android:fontStyle=&quot;italic&quot;
            app:font=&quot;@font/archivo_narrow_semibold_italic&quot; app:fontWeight=&quot;600&quot; app:fontStyle=&quot;italic&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_bold&quot; android:fontWeight=&quot;700&quot; android:fontStyle=&quot;normal&quot;
            app:font=&quot;@font/archivo_narrow_bold&quot; app:fontWeight=&quot;700&quot; app:fontStyle=&quot;normal&quot;/&gt;

        &lt;font android:font=&quot;@font/archivo_narrow_bold_italic&quot; android:fontWeight=&quot;700&quot; android:fontStyle=&quot;italic&quot;
            app:font=&quot;@font/archivo_narrow_bold_italic&quot; app:fontWeight=&quot;700&quot; app:fontStyle=&quot;italic&quot;/&gt;

    &lt;/font-family&gt;

But I cannot figure out how to actually make use of each of these weights; either in an XML (layout/style) file, or in Java code. Their is no `fontWeight` attribute available for `TextView`, and the [`Typeface`][2] object created from [`ResourcesCompat.getFont(context, R.font.archivo_narrow)`][3] has no mention of font weights.

I realize that I can just specify the specific font resource (i.e. `R.font.archivo_narrow_semibold`), but then what is the point of having a `fontWeight` attribute in the `font-family`? 

---

### Update

A new static [`create(Typeface family, int weight, boolean italic)`][4] method was added in API Level 28, along with a [`getWeight()`][5] instance method. This finally makes it possible to make use of the `fontWeight` attribute in Java code; though only for API Level 28 and above, I haven&#39;t found any analogs in the support library.

This is useful—and shows that the `fontWeight` attribute didn&#39;t serve any purpose in the past—but I would really like to be able to use the weight in XML styling. 


  [1]: https://developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html
  [2]: https://developer.android.com/reference/android/graphics/Typeface.html#create(android.graphics.Typeface,%20int)
  [3]: https://developer.android.com/reference/android/support/v4/content/res/ResourcesCompat.html
  [4]: https://developer.android.com/reference/android/graphics/Typeface.html#create(android.graphics.Typeface,%20int,%20boolean)
  [5]: https://developer.android.com/reference/android/graphics/Typeface.html#getWeight()

How to use specified weights for fonts in XML

I am getting the Error 

&gt; gettingdocuments.com.google.firebase.firestore.FirebaseFirestoreException:
&gt; PERMISSION_DENIED: Missing or insufficient permissions.

for the below code on else statement

    db.collection(&quot;users&quot;)
        .get()
        .addOnCompleteListener(new OnCompleteListener&lt;QuerySnapshot&gt;() {
            @Override
            public void onComplete(@NonNull Task&lt;QuerySnapshot&gt; task) {
                 if (task.isSuccessful()) {
                     for (DocumentSnapshot document : task.getResult()) {
                         s(document.getId() + &quot; =&gt; &quot; + document.getData());
                     }
                 } else {
                     s(&quot;Error getting documents.&quot;+ task.getException());
                 }
             }
         });

firestore: PERMISSION_DENIED: Missing or insufficient permissions

I&#39;m working on MacOS and just starting with `react-native`.

One of the first steps to get started is to run: `react-native run-android` or `react-native run-ios`. But I&#39;m getting this error:

&lt;!-- language: lang-bash --&gt;

    react-native run-android

Result:

    Scanning folders for symlinks in /Users/ric/myprojs/albums/node_modules (6ms)
    Starting JS server...
    Building and installing the app on the device (cd android &amp;&amp; ./gradlew installDebug)...
    
    FAILURE: Build failed with an exception.
    
    * What went wrong:
    Could not determine java version from &#39;9.0.1&#39;.
    
    * Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
    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


This is what I get when I run `java --version`:

&lt;!-- language: lang-bash --&gt;

    java --version

Result:

    java 9.0.1
    Java(TM) SE Runtime Environment (build 9.0.1+11)
    Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)
    mbp:albums ric$ java --version
    java 9.0.1
    Java(TM) SE Runtime Environment (build 9.0.1+11)
    Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

## Edit

My javac version:

&lt;!-- language: lang-bash --&gt;

    javac --version

Result:

    javac 9.0.1


Any idea on how to fix this?


React Native error: &quot;Could not determine java version from &#39;9.0.1&#39;.&quot;

Using new android studio with new 3.0.0 Gradle pluging.  
When building some warning happened:


    registerResGeneratingTask is deprecated, use
    registerGeneratedFolders(FileCollection)






RegisterResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)

Unable to resolve dependency for &#39;:app@debug/compileClasspath&#39;: Could not resolve com.android.support:appcompat-v7:26.1.0.

Could not resolve com.android.support:appcompat-v7:26.1.0.

Required by: project :app
 &gt; No cached version of com.android.support:appcompat-v7:26.1.0 available for offline mode.

Error log:
---
&gt;Could not resolve all files for configuration &#39;:app:debugCompileClasspath&#39;.&lt;br /&gt;
&gt; Could not resolve com.android.support:appcompat-v7:26.1.0.&lt;br /&gt;
  Required by:&lt;br /&gt;
      project :app&lt;br /&gt;
   &gt; No cached version of com.android.support:appcompat-v7:26.1.0 available for offline mode.&lt;br /&gt;
   &gt; No cached version of com.android.support:appcompat-v7:26.1.0 available for offline mode.&lt;br /&gt;
&gt; Could not resolve com.android.support.constraint:constraint-layout:1.1.0-beta3.&lt;br /&gt;
  Required by:&lt;br /&gt;
      project :app&lt;br /&gt;
   &gt; No cached version of com.android.support.constraint:constraint-layout:1.1.0-beta3 available for offline mode.&lt;br /&gt;
   &gt; No cached version of com.android.support.constraint:constraint-layout:1.1.0-beta3 available for offline mode.&lt;br /&gt;
&gt; Could not resolve com.android.support:design:26.1.0.&lt;br /&gt;
  Required by:&lt;br /&gt;
      project :app&lt;br /&gt;
   &gt; No cached version of com.android.support:design:26.1.0 available for offline mode.&lt;br /&gt;
   &gt; No cached version of com.android.support:design:26.1.0 available for offline mode.&lt;br /&gt;
&gt; Could not resolve com.android.support:cardview-v7:26.1.0.&lt;br /&gt;
  Required by:&lt;br /&gt;
      project :app&lt;br /&gt;
   &gt; No cached version of com.android.support:cardview-v7:26.1.0 available for offline mode.&lt;br /&gt;
   &gt; No cached version of com.android.support:cardview-v7:26.1.0 available for offline mode.&lt;br /&gt;
&gt; Could not resolve com.google.android.gms:play-services-ads:11.4.2.&lt;br /&gt;
  Required by:&lt;br /&gt;
      project :app&lt;br /&gt;
   &gt; No cached version of com.google.android.gms:play-services-ads:11.4.2 available for offline mode.&lt;br /&gt;
   &gt; No cached version of com.google.android.gms:play-services-ads:11.4.2 available for offline mode.&lt;br /&gt;
&gt; Could not resolve com.android.support:support-v4:26.1.0.&lt;br /&gt;
  Required by:&lt;br /&gt;
      project :app&lt;br /&gt;
   &gt; No cached version of com.android.support:support-v4:26.1.0 available for offline mode.&lt;br /&gt;
   &gt; No cached version of com.android.support:support-v4:26.1.0 available for offline mode.

**Error log image:**

![Click here for image][1]


  [1]: https://i.stack.imgur.com/Xk9jS.png

Unable to resolve dependency for &#39;:app@debug/compileClasspath&#39;: Could not resolve com.android.support:appcompat-v7:26.1.0

In Android Studio 3, I&#39;m seeing this issue:

&gt; The specified Android SDK Build Tools version (26.0.0) is ignored, as
&gt; it is below the minimum supported version (26.0.2) for Android Gradle
&gt; Plugin 3.0.0.
&gt; 
&gt; Android SDK Build Tools 26.0.2 will be used.
&gt; 
&gt; To suppress this warning, remove &quot;buildToolsVersion &#39;26.0.0&#39;&quot; from
&gt; your build.gradle file, as each version of the Android Gradle Plugin
&gt; now has a default version of the build tools.

The problem is that because these are third-party/vendor modules that have `buildToolsVersion &#39;26.0.0&#39;`, I can&#39;t modify their build.gradle without forking each submodule.

Is there a way to set a global `buildToolsVersion` that will override all the sub build.gradles? 

&quot;The specified Android SDK Build Tools version (26.0.0) is ignored...&quot;

My gradle file

    // Top-level build file where you can add configuration options common to all sub-projects/modules.
    
    buildscript {
    
       repositories {
           google()
           jcenter()
       }
       dependencies {
           classpath &#39;com.android.tools.build:gradle:3.0.0&#39;
        

           // NOTE: Do not place your application dependencies here; they belong
           // in the individual module build.gradle files
       }
    }

     allprojects {
       repositories {
           google()
           jcenter()
       }
     }

     task clean(type: Delete) {
       delete rootProject.buildDir
      }


gradle - Could not find method google() for arguments [] on repository container

I was using the following code in my gradle script to rename the apks generated with AndroidStudio:

    applicationVariants.all { variant -&gt;
        variant.outputs.each { output -&gt;
            output.outputFile = new File(output.outputFile.parent, defaultConfig.versionCode + &quot;_&quot; + output.outputFile.name)
        }
    }

So it was generating apks with names like: **345-app-release.apk**, where 345 is the versionCode.

But after updating to AndroidStudio 3.0 it returns the following error:

&gt; Cannot set the value of read-only property &#39;outputFile&#39; for
&gt; ApkVariantOutputImpl_Decorated{apkData=Main{type=MAIN, fullName=debug,
&gt; filters=[]}} of type
&gt; com.android.build.gradle.internal.api.ApkVariantOutputImpl.

How can I achieve a similar renaming with the new build tools.



Cannot set the value of read-only property &#39;outputFile&#39; for ApkVariantOutputImpl_Decorated

I migrate to Android studio 3.0. So, the project become unable to compile a module named &quot;:animator&quot; and it displays me this error:

 

     Error:Unable to resolve dependency for
     &#39;:app@dexOptions/compileClasspath&#39;: Could not resolve project
     :animators. &lt;a
     href=&quot;openFile:/home/mobilepowered/MobilePowered/MyInnovalee/trunk17-10-2017/app/build.gradle&quot;&gt;Open
     File&lt;/a&gt;&lt;br&gt;&lt;a href=&quot;Unable to resolve dependency for
     &amp;#39;:app@dexOptions/compileClasspath&amp;#39;: Could not resolve project
     :animators.&quot;&gt;Show Details&lt;/a&gt;
     

and show details gives this log : 

     Unable to resolve dependency for &#39;:app@dexOptions/compileClasspath&#39;:
     Could not resolve project :animators.
     
     Could not resolve project :animators. Required by:
         project :app
     Unable to find a matching configuration of project :animators:
          - Configuration &#39;debugApiElements&#39;:
              - Required com.android.build.api.attributes.BuildTypeAttr &#39;dexOptions&#39; and found incompatible value &#39;debug&#39;.
              - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr &#39;Aar&#39; and
     found compatible value &#39;Aar&#39;.
              - Found com.android.build.gradle.internal.dependency.VariantAttr &#39;debug&#39; but
     wasn&#39;t required.
              - Required org.gradle.api.attributes.Usage &#39;java-api&#39; and found compatible value &#39;java-api&#39;.
          - Configuration &#39;debugRuntimeElements&#39;:
              - Required com.android.build.api.attributes.BuildTypeAttr &#39;dexOptions&#39; and found incompatible value &#39;debug&#39;.
              - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr &#39;Aar&#39; and
     found compatible value &#39;Aar&#39;.
              - Found com.android.build.gradle.internal.dependency.VariantAttr &#39;debug&#39; but
     wasn&#39;t required.
              - Required org.gradle.api.attributes.Usage &#39;java-api&#39; and found incompatible value &#39;java-runtime&#39;.
          - Configuration &#39;releaseApiElements&#39;:
              - Required com.android.build.api.attributes.BuildTypeAttr &#39;dexOptions&#39; and found incompatible value &#39;release&#39;.
              - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr &#39;Aar&#39; and
     found compatible value &#39;Aar&#39;.
              - Found com.android.build.gradle.internal.dependency.VariantAttr &#39;release&#39; but
     wasn&#39;t required.
              - Required org.gradle.api.attributes.Usage &#39;java-api&#39; and found compatible value &#39;java-api&#39;.
          - Configuration &#39;releaseRuntimeElements&#39;:
              - Required com.android.build.api.attributes.BuildTypeAttr &#39;dexOptions&#39; and found incompatible value &#39;release&#39;.
              - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr &#39;Aar&#39; and
     found compatible value &#39;Aar&#39;.
              - Found com.android.build.gradle.internal.dependency.VariantAttr &#39;release&#39; but
     wasn&#39;t required.
              - Required org.gradle.api.attributes.Usage &#39;java-api&#39; and found incompatible value &#39;java-runtime&#39;.

Android studio 3.0: Unable to resolve dependency for :app@dexOptions/compileClasspath&#39;: Could not resolve project :animators

This is the output of my Gradle console, I am unable to build my project

    D:\Android Projects\....\app\src\main\res\layout\topic_view_header.xml
    Error:error: resource attr/?? (aka -packagename- :attr/??) not found.
    Error:error: resource attr/?? (aka -packagename-:attr/??) not found.
    Error:error: resource attr/?? (aka -packagename-:attr/??) not found.
    Error:resource attr/?? (aka -packagename-:attr/??) not found.
    Error:resource attr/?? (aka -packagename-:attr/??) not found.
    Error:resource attr/?? (aka -packagename-:attr/??) not found.
    Error:failed linking file resources.
    Error:java.util.concurrent.ExecutionException: 
    java.util.concurrent.ExecutionException: 
    com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
    Error:java.util.concurrent.ExecutionException: 
    com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
    Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for 
    details
    Error:Execution failed for task &#39;:app:processDebugResources&#39;.
    &gt; Failed to execute aapt
    Information:BUILD FAILED in 27s
    Information:11 errors
    Information:0 warnings

Android Studio 3.0 RC 2


Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details

I have updated Android Studio to version 3 and now seems unable to compile my project previously compiled without errors.

The error message is the follow

&gt; Error:Error: commons-logging defines classes that conflict with
&gt; classes now provided by Android. Solutions include finding newer
&gt; versions or alternative libraries that don&#39;t have the same problem
&gt; (for example, for httpclient use HttpUrlConnection or okhttp instead),
&gt; or repackaging the library using something like jarjar.
&gt; [DuplicatePlatformClasses]

The dependencies are

    dependencies {
        compile fileTree(include: [&#39;*.jar&#39;], dir: &#39;libs&#39;)
        testCompile &#39;junit:junit:4.12&#39;
        compile &#39;com.android.support:appcompat-v7:27.0.0&#39;
        compile &#39;com.android.support:design:27.0.0&#39;
        compile &#39;com.google.api-client:google-api-client-android:1.23.0&#39; exclude module: &#39;httpclient&#39;
        compile &#39;com.google.http-client:google-http-client-gson:1.23.0&#39; exclude module: &#39;httpclient&#39;
        compile &#39;com.google.firebase:firebase-core:11.4.2&#39;
    }

and error seems caused by 

    compile &#39;com.google.api-client:google-api-client-android:1.23.0&#39; exclude module: &#39;httpclient&#39;
    compile &#39;com.google.http-client:google-http-client-gson:1.23.0&#39; exclude module: &#39;httpclient&#39;

I already use `exclude module: &#39;httpclient&#39;`
So why It doesn&#39;t compile?
Is this a bug of Android Studio 3 and\or included `com.android.tools.build:gradle:3.0.0` plugin or I&#39;m missing something? With the previous version no problem to compile exactly the same project.

Content Type	Original Author	Original Content on Stackoverflow
Question	Amit Kumar	View Question on Stackoverflow
Solution 1 - Java	Jayson Chacko	View Answer on Stackoverflow
Solution 2 - Java	Sergio	View Answer on Stackoverflow

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