- Connect Android phone and host machine to same WiFi network
- Connect Android phone to host machine using **USB cable** (to start with)
- Run `adb tcpip 5555` from a command prompt
- Run `adb shell &quot;ip addr show wlan0 | grep -e wlan0$ | cut -d\&quot; \&quot; -f 6 | cut -d/ -f 1&quot;` to obtain the phone&#39;s IP address
- Disconnect USB cable and run `adb connect &lt;ip_address&gt;:5555`

You can now view logcat output by running `adb logcat` or by viewing the Android Monitor tab within Android Studio. 

if you are using android studio.Just Download the plugin AndroidWifiADB for android studio.

You can adb over wifi using the app Wifi-ADB. The app requires superSU permissions hence the android phone you want to connect over WiFi must be rooted.

On one of my pages I use a `FormBuilder` to fill a form at initialization. Every input gets a class whenever the input is **not** empty. This is done by adding a `ngClass` to every input, and subscribing on the `FormGroup`&#39;s `valueChanges`.

My problem occurs whenever the form is filled programmatically. Whenever a user changes any value on the form, `valueChanges` gets called, however, this is not the case when using a `FormBuilder`.

My question is: How to get the `valueChanges` event to be fired whenever the `FormBuilder` is finished.

I have tried using `this.FormGroup.updateValueAndValidity()`, but this did not result in anything.

How to fire the `valueChanges` programmatically?

I know how getter and setter work in JavaScript. What I don&#39;t understand is why we need them when we can get the same result using normal functions? Consider the following code:

    var person = {
        firstName: &#39;Jimmy&#39;,
        lastName: &#39;Smith&#39;,
        get fullName() {
            return this.firstName + &#39; &#39; + this.lastName;
        }
    }
    
    console.log(person.fullName);    // Jimmy Smith
        
We can easily replace getter with a function:

    var person = {
        firstName: &#39;Jimmy&#39;,
        lastName: &#39;Smith&#39;,
        fullName: function() {
            return this.firstName + &#39; &#39; + this.lastName;
        }
    }
    
    console.log(person.fullName());    // Jimmy Smith

I don&#39;t see the point of writing getter and setter.


Why use getters and setters in JavaScript?

I am debugging USB devices connected to my Android phone, this means I cannot use ADB over a USB connection. How can I connect to adb over WiFi?

Note: Similar question [here][1] refers to adb over tcp, however, I&#39;m specifically asking about WiFi. 


  [1]: https://stackoverflow.com/questions/2604727/how-can-i-connect-to-android-with-adb-over-tcp

How can I use adb over WiFi?

<p>I am debugging USB devices connected to my Android phone, this means I cannot use ADB over a USB connection. How can I connect to adb over WiFi?</p>
<p>Note: Similar question <a href="https://stackoverflow.com/questions/2604727/how-can-i-connect-to-android-with-adb-over-tcp" target="_blank" rel="noopener noreferrer">here</a> refers to adb over tcp, however, I'm specifically asking about WiFi.</p>


How can we achieve a map marker icon with **vector asset** file, the way google shows it like this, programatically:

[![map][1]][1]


  [1]: https://i.stack.imgur.com/oU38H.jpg


Update: 

    map.addMarker(new MarkerOptions()
        .position(latLng)
        .icon(BitmapDescriptorFactory.fromResource(R.drawable.your_vector_asset))
        .title(title);
this doesnot work when dealing with vector assets. The main reason to ask the question. The error with the above code:

&gt; java.lang.IllegalArgumentException: Failed to decode image. The provided image must be a Bitmap.

Custom marker in google maps in android with vector asset icon

After updating to android studio 2.3 I got this error message.
I know it&#39;s just a hint as the app run normally but it&#39;s really strange.

&gt; All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 25.1.1, 24.0.0. Examples include com.android.support:animated-vector-drawable:25.1.1 and com.android.support:mediarouter-v7:24.0.0

[![enter image description here][1]][1]


my gradle:

    dependencies {
        compile fileTree(dir: &#39;libs&#39;, include: [&#39;*.jar&#39;])
        androidTestCompile(&#39;com.android.support.test.espresso:espresso-core:2.2.2&#39;, {
            exclude group: &#39;com.android.support&#39;, module: &#39;support-annotations&#39;
        })
        testCompile &#39;junit:junit:4.12&#39;
    
        compile &#39;com.android.support:appcompat-v7:25.1.1&#39;
        compile &#39;com.android.support:support-v4:25.1.1&#39;
        compile &#39;com.android.support:design:25.1.1&#39;
        compile &#39;com.android.support:recyclerview-v7:25.1.1&#39;
        compile &#39;com.android.support:cardview-v7:25.1.1&#39;
        compile &#39;com.google.android.gms:play-services-maps:10.2.0&#39;
        compile &#39;com.google.android.gms:play-services:10.2.0&#39;
    
        compile &#39;io.reactivex.rxjava2:rxjava:2.0.1&#39;
        compile &#39;io.reactivex.rxjava2:rxandroid:2.0.1&#39;
        compile &#39;com.jakewharton:butterknife:8.4.0&#39;
        annotationProcessor &#39;com.jakewharton:butterknife-compiler:8.4.0&#39;
        compile &#39;com.blankj:utilcode:1.3.6&#39;
        compile &#39;com.orhanobut:logger:1.15&#39;
        compile &#39;com.facebook.stetho:stetho:1.4.2&#39;
    
        provided &#39;com.google.auto.value:auto-value:1.2&#39;
        annotationProcessor &#39;com.google.auto.value:auto-value:1.2&#39;
        annotationProcessor &#39;com.ryanharter.auto.value:auto-value-parcel:0.2.5&#39;
    
        compile &#39;com.mikepenz:iconics-core:2.8.2@aar&#39;
        compile(&#39;com.mikepenz:materialdrawer:5.8.1@aar&#39;) { transitive = true }
        compile &#39;com.mikepenz:google-material-typeface:2.2.0.3.original@aar&#39;
        compile &#39;me.zhanghai.android.materialprogressbar:library:1.3.0&#39;
        compile &#39;com.github.GrenderG:Toasty:1.1.1&#39;
        compile &#39;com.github.CymChad:BaseRecyclerViewAdapterHelper:2.8.0&#39;
        compile &#39;com.github.MAXDeliveryNG:slideview:1.0.0&#39;
    
        compile &#39;com.facebook.fresco:fresco:1.0.1&#39;
        compile &#39;com.github.bumptech.glide:glide:3.7.0&#39;
    
        compile &#39;com.google.maps.android:android-maps-utils:0.4.4&#39;
        compile &#39;com.github.jd-alexander:library:1.1.0&#39;
    }


  [1]: https://i.stack.imgur.com/trji5.png

All com.android.support libraries must use the exact same version specification

I currently have a recycler view whose data updates every 5 secs. To update the data on the list, I am using 

    notifyItemChanged(position);
    notifyItemRangeChanged(position, mList.size());

Each time I call notifyItemChanged(), the items on my recycler view update properly, however, it will blink because this causes onBindViewHolder to be called again. So it&#39;s as though it is a fresh load each time. How can I prevent this from happening, if possible?



How to prevent RecyclerView item from blinking after notifyItemChanged(pos)?

I got the following Error in android Studio 2.2.3 when I sync gradle.

**Error:Cause: unable to find valid certification path to requested target**

How can I fix this issue

I am Adding my Gradle file also

    apply plugin: &#39;com.android.application&#39;
    android {
    compileSdkVersion 25
    buildToolsVersion &quot;25.0.2&quot;
    defaultConfig {
        applicationId &quot;com.sample.myapplication&quot;
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName &quot;1.0&quot;
        testInstrumentationRunner &quot;android.support.test.runner.AndroidJUnitRunner&quot;
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile(&#39;proguard-android.txt&#39;), &#39;proguard-rules.pro&#39;
        }
    } } dependencies {
    compile fileTree(dir: &#39;libs&#39;, include: [&#39;*.jar&#39;])
    androidTestCompile(&#39;com.android.support.test.espresso:espresso-core:2.2.2&#39;, {
        exclude group: &#39;com.android.support&#39;, module: &#39;support-annotations&#39;
    })
    compile &#39;com.android.support:appcompat-v7:23.4.0&#39;
    compile &#39;com.android.support:design:23.4.0&#39;
    compile &#39;com.android.support:palette-v7:23.4.0&#39;
    testCompile &#39;junit:junit:4.12&#39;
    // FireBase
    compile &#39;com.google.firebase:firebase-messaging:9.0.0&#39;
    }//Add this line
    apply plugin: &#39;com.google.gms.google-services&#39;


and the project Level Gradle File
 

    buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath &#39;com.android.tools.build:gradle:2.2.3&#39;
		classpath &#39;com.google.gms:google-services:3.0.0&#39;
    }
    }
    allprojects {
    repositories {
        mavenCentral()
        jcenter{ url &quot;http://jcenter.bintray.com/&quot; }
        maven { url &quot;https://jitpack.io&quot; }
    }
    }
    task clean(type: Delete) {
    delete rootProject.buildDir
    }




Error:Cause: unable to find valid certification path to requested target

I&#39;m trying to use Kotlin with Butterknife for my Android Application.

Here is my build.gradle

    dependencies {
        ...
        compile &#39;com.jakewharton:butterknife:8.0.1&#39;
        kapt &#39;com.jakewharton:butterknife-compiler:8.0.1&#39;
    }
    
    kapt {
        generateStubs = true
    }

I also has an EditText and I want to show a message using ButterKnife when it is changed:

    @OnTextChanged(R.id.input)
    fun test() {
       toast(1)
    }

However, nothing happens. I put a breakpoint into the function - and it is not even executed.

P.S: I have heard about kotterknife, however I have seen an [example][1] with pure Butterknife.

What am I doing wrong?


  [1]: https://github.com/JetBrains/kotlin-examples/tree/master/gradle/android-butterknife

Android: Kotlin with Butterknife

How do I get configure Angular and VSCode so that my breakpoints work?

How to debug Angular with VSCode?

#### Steps to Reproduce / Screenshots

Apply all operations from [the instruction](https://nuclide.io/docs/platforms/react-native/):

1. Create a blank React Native project with `$ react-native init [project name].`

2. From the [command Palette][1] (Cmd-Shift-P), choose &quot;Nuclide React Native: Start Packager&quot; to start the React Native Server.

3. After starting the server, you can prime the React Native Debugger for when the application begins running. From the [command Palette][1] (Cmd-Shift-P), launch &quot;Nuclide React Native: Start Debugging&quot;.

4. Ensure that you are in the root directory of the React Native project, then run the application from the command-line: `$ react-native run-ios` (or choose another existing simulator, for example, `react-native run-ios --simulator=&quot;iPhone4s&quot;`).

 (**Important**: #4 should follow AFTER #3, and chrome debugger should be closed).

5. From the iOS simulator, press `Cmd-D` (`Ctrl-D` on Linux). This will bring up the debug options for your application. For example, select **Debug JS Remotely**.

#### Environment

* Atom version 1.15.0
* Nuclide plugin version 0.214.0
* React Native version: 0.42.3
* Platform(s) (iOS, Android, or both?): iOS
* Device info Simulator/Device? - Simulator iOS 10.2 / iOS 8.1
* OS version? - MacOS 10.12.3
* Debug/Release? - Debug

In [the same doc](https://nuclide.io/docs/platforms/react-native/) said: &quot;...After you enable debugging (#5) from the simulated application, Nuclide will attach to that debugging process automatically since we primed the Debugger above (#3).&quot; So before I clicked **Debug JS Remotely** I saw the working react app as expected:

[![working react app][2]][2]

And after I clicked **Debug JS Remotely** I see that the `Nuclide` debugger changed its status from **Starting debugger...** to **The debuggee is currently running.** as expected as well:

[![The debuggee is currently running][3]][3]

**BUT** after I click **Debug JS Remotely** I see ***white screen only***

[![white screen][4]][4]

And there are no errors. As soon as I turn off remote debugging, everything loads fine again.

This happens with Nuclide debugger only, with chrome debugger, everything works well.


  [1]: https://nuclide.io/docs/editor/basics/#command-palette
  [2]: https://i.stack.imgur.com/he3sc.png
  [3]: https://i.stack.imgur.com/YrUtv.png
  [4]: https://i.stack.imgur.com/QRnlM.png

React Native app stuck on blank white screen with remote debugging using Nuclide

Is there an easy way to run a Python file inside Visual Studio Code with arguments?

I know I can add a custom configuration in the `launch.json` file with the `args` keyword. However, it is annoying to modify the *launch.json* file every time just because I want to use different arguments.




Visual Studio Code: run Python file with arguments

I&#39;m getting the following error immediately on launch, but only for devices running API &lt;20.

**edit: I initially reported this in Android Studio 2.4, and it&#39;s still an issue in Android Studio 3.0 stable


    D/dalvikvm: Trying to load lib /mnt/asec/[[packagename]]-1/lib/libsupportjni.so 0x41b13f30
    E/dalvikvm: dlopen(&quot;/mnt/asec/[[packagename]]-1/lib/libsupportjni.so&quot;) failed: dlopen failed: cannot locate symbol &quot;strtof&quot; referenced by &quot;libsupportjni.so&quot;...
    W/dalvikvm: Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lcom/android/tools/profiler/support/ProfilerService;
    D/AndroidRuntime: Shutting down VM
    W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x41659ce0)
    E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: [[packagename]], PID: 7500
                  java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol &quot;strtof&quot; referenced by &quot;libsupportjni.so&quot;...
                      at java.lang.Runtime.loadLibrary(Runtime.java:364)
                      at java.lang.System.loadLibrary(System.java:526)
                      at com.android.tools.profiler.support.ProfilerService.&lt;clinit&gt;(ProfilerService.java:44)
                      at [[packagename]].App.&lt;init&gt;(App.kt:25)
                      at java.lang.Class.newInstanceImpl(Native Method)
                      at java.lang.Class.newInstance(Class.java:1208)
                      at android.app.Instrumentation.newApplication(Instrumentation.java:990)
                      at android.app.Instrumentation.newApplication(Instrumentation.java:975)
                      at android.app.LoadedApk.makeApplication(LoadedApk.java:509)
                      at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4446)
                      at android.app.ActivityThread.access$1500(ActivityThread.java:144)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:136)
                      at android.app.ActivityThread.main(ActivityThread.java:5146)
                      at java.lang.reflect.Method.invokeNative(Native Method)
                      at java.lang.reflect.Method.invoke(Method.java:515)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:732)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:566)
                      at dalvik.system.NativeStart.main(Native Method)

UnsatisfiedLinkError: dlopen failed: cannot locate symbol &quot;strtof&quot; referenced by &quot;libsupportjni.so&quot; on API &lt;20

I have a list in which the first element is `null`. IntelliJ debugger correctly shows the list size as 5, but it shows only 1,2,3,4 elements. It would be nice to see that element with the index 0 is `null` (it took me some time to figure out my problems while debugging because it did not show that). Is it possible to force IntelliJ to show this?

Here is a screenshot, where the size is 5 and the elements shown are only 1-4 because the first element is `null`:

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/5D9pC.png

IntelliJ IDEA Debugger does not show null element in a list

After installing the Android O preview on a test device my ADB stopped working and started giving me this error.


    adb server version (36) doesn&#39;t match this client (39); killing...
    adb E 03-27 08:01:55  2925 147690 usb_osx.cpp:333] Could not open interface: e00002c5
    adb E 03-27 08:01:55  2925 147690 usb_osx.cpp:294] Could not find device interface
    error: could not install *smartsocket* listener: Address already in use
    ADB server didn&#39;t ACK
    * failed to start daemon *
    error: cannot connect to daemon

The only answers I have come across on this issue referred to Genymotion being out of sync with ADB but I don’t use Genymotion. Any help would be greatly appreciated. I have already wiped and reinstalled Android Studio as well as all of its tools and settings yet seem to still have this issue. 


ADB server version (36) doesn&#39;t match this client (39); killing

I have just updated emulator 26.0.3, now I cannot run `adb root` command for new created emulator.

the error shown is below:

`adbd cannot run as root in production builds`

I have killed and restart `adbd` like:

    adb kill-server
    adb devices

Nothing helps, any ideas?

----

I am not sure what is the difference and how to select different build but,
if following settings are enabled while creating, then it has root.[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/bYXc5.png

ADB root is not working on emulator (cannot run as root in production builds)

When I toggle on the *install via USB* in developer mode:

- it will pop the toast message said that *the device is temporarily restricted*
- then toggle off the settings. 
 
Is there any solution for this?  
I searched through all the way like turning off MIUI optimization but still does not work. I cannot debug my application by Android Studio in this way...... 

 

Install app via usb: The device is temporarily restricted

[![Android Studio with Failed Error][1]][1]

Got this freaky error

    Installation failed with message Failed to finalize session : INSTALL_FAILED_USER_RESTRICTED: Install canceled by user.
    It is possible that this issue is resolved by uninstalling an existing version of the `apk` if it is present, and then re-installing.
    
    WARNING: Uninstalling will remove the application data!
    
    Do you want to uninstall the existing application?


When trying to run the `apk` in my redmi 4 `MIUI 8.5.4.0` 

OEM unlocking enabled

Solution Tried  

 - MIUI optimization turned off   
 - USB debugging turned on   
 - Verify apps over USB turned on

NOTE: while turning on **install via USB** a pop up saying **The device is temporarily restricted**


  [1]: https://i.stack.imgur.com/TsZ3Z.jpg

INSTALL_FAILED_USER_RESTRICTED : android studio using redmi 4 device

**Problem**: adb start-server fails.

    --- adb starting (pid 1414) ---
    adb I 12-05 17:28:30  1414 48453 main.cpp:57] Android Debug Bridge version 1.0.39
    adb I 12-05 17:28:30  1414 48453 main.cpp:57] Version 27.0.0-4455170
    adb I 12-05 17:28:30  1414 48453 main.cpp:57] Installed as /Users/[username]/Library/Android/sdk/platform-tools/adb
    adb I 12-05 17:28:30  1414 48453 main.cpp:57] 
    adb I 12-05 17:28:30  1414 48453 adb_auth_host.cpp:416] 
    adb_auth_init...
    adb I 12-05 17:28:30  1414 48453 adb_auth_host.cpp:174] read_key_file &#39;/Users/[username]/.android/adbkey&#39;...
    adb F 12-05 17:28:30  1414 48466 transport_usb.cpp:37] Check failed: usb_packet_size &lt; 4096ULL (usb_packet_size=5120, 4096ULL=4096) 

**Catalyst**: Installing platform tools v27.0.0

**Solutions Tried**: Restarting Android Studio, Restarting computer, Manually starting ADB via terminal, deleting /Users/[username]/.android/adbkey and adbkey.pub, and reinstalling platform tools

Also I am not using genymotion, just the stock emulator.

Content Type	Original Author	Original Content on Stackoverflow
Question	donturner	View Question on Stackoverflow
Solution 1 - Android	donturner	View Answer on Stackoverflow
Solution 2 - Android	Pratik Mohanrao Gondil	View Answer on Stackoverflow
Solution 3 - Android	Purvil Bambharolia	View Answer on Stackoverflow

How can I use adb over WiFi?

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Why use getters and setters in JavaScript?

How to fire the `valueChanges` programmatically?

Attributions