Yes, it is possible to launch an app via adb shell making use of the monkey tool.

Using the command from [this answer][1]:

    adb shell monkey -p app.package.name -c android.intent.category.LAUNCHER 1
This command simulates the app icon click, so the intent implicit intent LAUNCHER is delivered to the specific receiver declared in app manifest (MAIN)


  [1]: https://stackoverflow.com/questions/4567904/how-to-start-an-application-using-android-adb-tools/25398877#25398877

Using latest versions (at least API 25) you can start the default Activity, without knowing its name, and not using `monkey`:

    PKG=com.android.calculator2
    adb shell am start $PKG/$(adb shell cmd package resolve-activity -c android.intent.category.LAUNCHER $PKG | sed -n &#39;/name=/s/^.*name=//p&#39;)

If you have the apk file, you can install and start the app using [droidbot](https://github.com/honeynet/droidbot).

    &gt; droidbot -d emulator-5554 -a &lt;xxx.apk&gt; -install_app -policy none -count 0

DroidBot is based on adb, but it uses static analysis to extract the Activity name automatically.

I want my .bat script (test.bat) to create a shortcut to itself so that I can copy it to my windows 8 Startup folder. 

I have written this line of code to copy the file but I haven&#39;t yet found a way to create the said shortcut, as you can see it only copies the script.
 
    xcopy &quot;C:\Users\Gabriel\Desktop\test.bat&quot; &quot;C:\Users\Gabriel\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup&quot;

Can you help me out?

How do I create a shortcut via command-line in Windows?

In Rust, when we want a struct to contain references, we typically define their lifetimes as such:

    struct Foo&lt;&#39;a&gt; {
    	x: &amp;&#39;a i32,
    	y: &amp;&#39;a i32,
    }

But it&#39;s also possible to define multiple lifetimes for different references in the same struct:

    struct Foo&lt;&#39;a, &#39;b&gt; {
    	x: &amp;&#39;a i32,
    	y: &amp;&#39;b i32,
    }

When is it ever useful to do this? Can someone provide some example code that doesn&#39;t compile when both lifetimes are `&#39;a` but does compile when the lifetimes are `&#39;a` and `&#39;b` (or vice versa)?

When is it useful to define multiple lifetimes in a struct?

From the post https://stackoverflow.com/questions/13380590/is-it-possible-to-start-activity-through-adb-shell, we can start an Android app via adb by

    adb shell am start -n yourpackagename/.activityname

But is it possible to start an Android app via adb without knowing the Activity name? For example, by sending the **android.intent.action.MAIN** intent to a package? Maybe some command like this:

    adb shell am start -a android.intent.action.MAIN -n packageName

Thanks!!

-Cosmo

Launch App via adb without knowing Activity name

From the post <a href="https://stackoverflow.com/questions/13380590/is-it-possible-to-start-activity-through-adb-shell" target="_blank" rel="noopener noreferrer">https://stackoverflow.com/questions/13380590/is-it-possible-to-start-activity-through-adb-shell</a>, we can start an Android app via adb by
<pre><code class="hljs language-bash">adb shell am start -n yourpackagename/.activityname
</code></pre>
But is it possible to start an Android app via adb without knowing the Activity name? For example, by sending the android.intent.action.MAIN intent to a package? Maybe some command like this:
<pre><code class="hljs language-css">adb shell am start -a android.intent.action.MAIN -n packageName
</code></pre>
Thanks!!
-Cosmo

What&#39;s the difference between using `execute()` and `executeOnExecuter()`?

- How does `execute()` execute tasks by default? (in serial or in parallel?)  

- What should be used for new SDKs &gt;16?

- Is it a good practice to use parallel execution (`THREAD_POOL_EXECUTOR`) for tasks rather than serial even if it doesn&#39;t matter for the application or does that depends on the number of `AsyncTask`s that will be executed?


AsyncTask execute() or executeOnExecutor()?

I&#39;m trying to make UI test for my android app in Kotlin. Since the new system using ActivityTestRule, I can&#39;t make it work: it compiles correctly, and at runtime, I get:

```lang-none
java.lang.Exception: The @Rule &#39;mActivityRule&#39; must be public.
    at org.junit.internal.runners.rules.RuleFieldValidator.addError(RuleFieldValidator.java:90)
    at org.junit.internal.runners.rules.RuleFieldValidator.validatePublic(RuleFieldValidator.java:67)
    at org.junit.internal.runners.rules.RuleFieldValidator.validateField(RuleFieldValidator.java:55)
    at org.junit.internal.runners.rules.RuleFieldValidator.validate(RuleFieldValidator.java:50)
    at org.junit.runners.BlockJUnit4ClassRunner.validateFields(BlockJUnit4ClassRunner.java:170)
    at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:103)
    at org.junit.runners.ParentRunner.validate(ParentRunner.java:344)
    at org.junit.runners.ParentRunner.&lt;init&gt;(ParentRunner.java:74)
    at org.junit.runners.BlockJUnit4ClassRunner.&lt;init&gt;(BlockJUnit4ClassRunner.java:55)
    at android.support.test.internal.runner.junit4.AndroidJUnit4ClassRunner.&lt;init&gt;(AndroidJUnit4ClassRunner.java:38)
    at android.support.test.runner.AndroidJUnit4.&lt;init&gt;(AndroidJUnit4.java:36)
    at java.lang.reflect.Constructor.constructNative(Native Method)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
    at android.support.test.internal.runner.junit4.AndroidAnnotatedBuilder.buildAndroidRunner(AndroidAnnotatedBuilder.java:57)
    at android.support.test.internal.runner.junit4.AndroidAnnotatedBuilder.runnerForClass(AndroidAnnotatedBuilder.java:45)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
    at org.junit.runner.Computer.getRunner(Computer.java:38)
    at org.junit.runner.Computer$1.runnerForClass(Computer.java:29)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
    at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:98)
    at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:84)
    at org.junit.runners.Suite.&lt;init&gt;(Suite.java:79)
    at org.junit.runner.Computer.getSuite(Computer.java:26)
    at android.support.test.internal.runner.TestRequestBuilder.classes(TestRequestBuilder.java:691)
    at android.support.test.internal.runner.TestRequestBuilder.build(TestRequestBuilder.java:654)
    at android.support.test.runner.AndroidJUnitRunner.buildRequest(AndroidJUnitRunner.java:329)
    at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:226)
    at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1584)
```

Here is how I declared mActivityRule:

    RunWith(javaClass&lt;AndroidJUnit4&gt;())
    LargeTest
    public class RadisTest {
    
        Rule
        public val mActivityRule: ActivityTestRule&lt;MainActivity&gt; = ActivityTestRule(javaClass&lt;MainActivity&gt;())
    
       ...
    }

It is already public :/

Kotlin and new ActivityTestRule : The @Rule must be public

With the below code my notification are only added to the notification bar, no popup style message is displayed like if you would receive a whatsapp message when you&#39;re in another application. What makes that happen to a notification?

    private void sendNotification(int distance, ViewObject viewObject) {
        Intent notificationIntent = new Intent(getApplicationContext(), MainActivity.class);
        notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        notificationIntent.putExtra(&quot;path&quot;, viewObject.getPath());
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addParentStack(MainActivity.class);
        stackBuilder.addNextIntent(notificationIntent);
        PendingIntent notificationPendingIntent = stackBuilder.getPendingIntent(Integer.parseInt(viewObject.getRefId()), PendingIntent.FLAG_UPDATE_CURRENT);
        
        NotificationCompat.BigTextStyle bigText = new NotificationCompat.BigTextStyle();
        bigText.bigText(String.format(getString(R.string.notification), viewObject.getTitle()));
        bigText.setBigContentTitle(getString(R.string.hello));
        
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        builder.setSmallIcon(R.drawable.ic_wald_poi)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_poi))
                .setColor(getResources().getColor(R.color.primary))
                .setContentTitle(getString(R.string.hello))
                .setContentIntent(notificationPendingIntent)
                .setContentText(String.format(getString(R.string.notification), viewObject.getTitle()))
                .setDefaults(Notification.DEFAULT_ALL)
                .setStyle(bigText);

        builder.setAutoCancel(true);
        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(0, builder.build());
    }

android show notification with a popup on top of any application

Can one use `adb` or `adb shell` commands to get attached emulator/device OS info, i.e. API version?


Get Android OS version of device connected via ADB

`setOnScrollListener` is deprecated. Reading the docs [from here][1] it tells to Use `addOnScrollListener(OnScrollListener)` and `removeOnScrollListener(OnScrollListener)`. 

What is the proper way to `add and remove OnScrollListener`? 

Do i need to use `removeOnScrollListner` in `onPause` and set it up again using `addOnScrollListener` in `onResume`??

  [1]: https://developer.android.com/reference/android/support/v7/widget/RecyclerView.html#setOnScrollListener(android.support.v7.widget.RecyclerView.OnScrollListener)

Android setOnScrollListener on RecyclerView deprecated

My app has ability to select photo from library. Exactly I want file path from this selection.

This is the code to create intent for selecting photo:

        Intent photoPickerIntent = new Intent(Intent.ACTION_PICK,
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        photoPickerIntent.setType(&quot;image/*&quot;);
        startActivityForResult(photoPickerIntent, INTENT_REQUEST_CODE_SELECT_PHOTO);

This is the code that gets file path from URI:

        Cursor cursor = null;
        String path = null;
        try {
            String[] projection = { MediaStore.Images.Media.DATA };
            cursor = context.getContentResolver().query(contentUri, projection, null, null, null);
            int columnIndex = cursor.getColumnIndexOrThrow(projection[0]);
            cursor.moveToFirst();
            path = cursor.getString(columnIndex);
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
        return path;

Before yesterday&#39;s update of Google Photos app everything worked perfectly fine.
Now `path` is null after parsing URI.

URI is similar to this: `content://com.google.android.apps.photos.contentprovider/0/1/content%3A%2F%2Fmedia%2Fexternal%2Fimages%2Fmedia%2F75209/ACTUAL`

I also tried to create intent with Intent.ACTION_GET_CONTENT action - no luck.

Choosing photo using new Google Photos app is broken

I&#39;m using Android L transitions passing an `ActivityOptions` bundle in intent.
How can I reproduce the animation on the same intent with `TaskStackBuilder`?

This is my current working method with a single `Intent`:

    startActivity(myIntent, ActivityOptions.makeSceneTransitionAnimation(this).toBundle());

This is my try with `TaskStackBuilder`:

     TaskStackBuilder builder = TaskStackBuilder.create(this);
     builder.addNextIntentWithParentStack(myIntent);
     builder.startActivities(ActivityOptions.makeSceneTransitionAnimation(this).toBundle());

But the animation creates a strange effect, not the same one of the &quot;single-intent&quot; version.

I also tried with:

    builder.addNextIntent(myIntent);
instead of:

    builder.addNextIntentWithParentStack(myIntent);

TaskStackBuilder transition animation

I am getting the following tool tip in **AndroidManifest.xml**: 

&gt; App is not indexable by Google Search; consider adding at least one
&gt; Activity with an ACTION-VIEW intent-filler. See issue explanation for
&gt; more details. 
&gt;
&gt; Adds deep links to get your app into the Google index,
&gt; to get installs and traffic to your app from Google Search.

[![enter image description here][1]][1]

Can anyone explain why it is so?

  [1]: http://i.stack.imgur.com/ghLjy.png

Android - Adding at least one Activity with an ACTION-VIEW intent-filter after Updating SDK version 23

As stated in [this answer by Iftah](https://stackoverflow.com/a/24404235/5878272) I can get the audio recorded by the Speech Recoginition in android by getting the Uri from the Intent passed to:

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        // the recording url is in getData:
        Uri audioUri = data.getData();
    }

Here the `Intent data` has exactly what I want without problems.

That all works perfectly, however that solution puts up a prompt for the user of when to speak, I did not want that so to get around that I let my activity implement RecognitionListener as so:

    public class MainActivity extends AppCompatActivity implements RecognitionListener {
    
        private SpeechRecognizer speech = null;
        private Intent recognizerIntent;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            recognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
            recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, &quot;sv_SE&quot;);
            recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, &quot;sv_SE&quot;);
            recognizerIntent.putExtra(&quot;android.speech.extra.GET_AUDIO_FORMAT&quot;, &quot;audio/AMR&quot;);
            recognizerIntent.putExtra(&quot;android.speech.extra.GET_AUDIO&quot;, true);
    
            speech = SpeechRecognizer.createSpeechRecognizer(this);
            speech.setRecognitionListener(this);
            speech.startListening(recognizerIntent);
        }
    
        @Override
        public void onReadyForSpeech(Bundle params) {
            Log.d(&quot;Debug&quot;, &quot;On ready for speech&quot;);
        }
    
        @Override
        public void onBeginningOfSpeech() {
            Log.d(&quot;Debug&quot;, &quot;On beggining of speech&quot;);
        }
    
        @Override
        public void onRmsChanged(float rmsdB) {
            Log.d(&quot;Debug&quot;, &quot;Rsm changed&quot;);
        }
    
        @Override
        public void onBufferReceived(byte[] buffer) {
            Log.d(&quot;Debug&quot;, &quot;Buffer recieved&quot;);
        }
    
        @Override
        public void onEndOfSpeech() {
            Log.d(&quot;Debug&quot;, &quot;On end of speech&quot;);
        }
    
        @Override
        public void onError(int error) {
            Log.d(&quot;Debug&quot;, &quot;Error&quot;);
        }
    
        @Override
        public void onPartialResults(Bundle partialResults) {
            Log.d(&quot;Debug&quot;, &quot;On partial result&quot;);
        }
    
        @Override
        public void onEvent(int eventType, Bundle params) {
            Log.d(&quot;Debug&quot;, &quot;On event&quot;);
        }
    
        @Override
        public void onResults(Bundle results) {
            Log.d(&quot;Debug&quot;, &quot;On result&quot;);
        }
    }

This gets around the prompt hovewer I can not figure out how to get the Uri like in the first example because here:

    @Override
        public void onResults(Bundle results) {
            Log.d(&quot;Debug&quot;, &quot;On result&quot;);
            // The results bundle don&#39;t contain the URI!
        }

I get a `Bundle results` which don&#39;t contain the Intent or the Uri. I have tried looking at all the keys in the bundle and no URI or Intent exists, I have also tried `getIntent()` but that don&#39;t return anything.

I appreciate any help or push in the right direction.



  [1]: https://stackoverflow.com/a/24404235/5878272

Android get the Intent when implementing RecognitionListener

Can [`Activity.getIntent()`](https://developer.android.com/reference/android/app/Activity.html#getIntent()) ever return `null`?

The documentation does not mention this as a possibility, so I am wondering if I have to check the result of `getIntent()` for `null` value before dereferencing it.

Can Activity.getIntent() ever return null?

This is quite a common question, but none of the solutions appear to work for me. First time asker, so apologies if I get the conventions wrong.

 I am trying to connect my Galaxy S5 to my computer running Ubuntu 14.04 so I can do some android development. I have recently downloaded and installed Android Studio and the SDK and my device is detected when it&#39;s connected via USB but the device either appears as &#39;unauthorized&#39; or &#39;offline&#39;. I know I should be expecting the RSA key prompt but this never appears.

I have tried:  

- Checking debugging was enabled  
- Running adb kill-server and adb devices  
- Restarting (the device, developer options, the machine)  
- Simple unplugging and replugging the USB cable 
- Checking my adb version (it is 1.0.31)  
- Trying different USB ports  
- Revoking USB debugging authorizations
- Toggling enabling ADB Integration from within Android Studio
- Connecting as PTP device and MTP device

I have tried it on a separate machine that runs fedora and this works fine with no issues, the promopt appears right away. Therefore I imagine it is not the USB cable that is faulty.

Any ideas?

Android Studio - Device is connected but &#39;offline&#39;

I had issues finding a good solid tutorial on how to setup ADB for Mac. 

How can I add **ADB** to **macOS** in such a way that it can be used in the terminal? 

**UPDATE**

For those reading this post. Yes, as the edited response says. I was at the time looking for a tutorial with all steps as a beginner level guide. 

--- 

Unlike https://stackoverflow.com/questions/17901692/set-up-adb-on-mac-os-x, the intention of this question is to have a tutorial with **all** of the required installation steps to get ADB on macOS.

Installing ADB on macOS

I am trying to reverse-forward port through ADB, but it just returns cryptic error of `error: closed`. Normal forwarding works. Session snippet:

    $ adb forward tcp:59778 tcp:59778
    $ adb forward --list
    015d2109ce0c1a0f tcp:59778 tcp:59778
    $ adb forward --remove-all
    $ adb forward --list
    $ adb reverse --list
    error: closed
    error: closed
    $ adb reverse tcp:59778 tcp:59778
    error: closed
    error: closed

I am connecting via USB to non-rooted Nexus 7 2012 Android 4.4.4 from Windows 7 Pro x64 on Boot Camp.

Getting &quot;error: closed&quot; twice on &quot;adb reverse&quot;

###Configuration:


- Windows 8.1
- ADB version: 1.0.32
- Smartphone: Oneplus One

###Problem

I installed the Samsung drivers as it is said to do. When I run the ADB devices command, it said **unauthorized**.

###Already tried:

1. I&#39;ve done everything that&#39;d been said on this post: *https://stackoverflow.com/a/25546300/1848376*

    But the problem is that I don&#39;t get a prompt on the phone to tell me I must accept the connection.

2. When I run the command `adb shell`, here is the answer:

        error: device unauthorized.
        This adbd&#39;s $ADB_VENDOR_KEYS is not set; try &#39;adb kill-server&#39; if that seems wrong.
        Otherwise check for a confirmation dialog on your device.

I did &quot;adb kill-server&quot;, but it didn&#39;t change anything. Why?



Content Type	Original Author	Original Content on Stackoverflow
Question	hackjutsu	View Question on Stackoverflow
Solution 1 - Android	LeuOfIridia	View Answer on Stackoverflow
Solution 2 - Android	Diego Torres Milano	View Answer on Stackoverflow
Solution 3 - Android	Yuanchun Li	View Answer on Stackoverflow

Launch App via adb without knowing Activity name

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

When is it useful to define multiple lifetimes in a struct?

How do I create a shortcut via command-line in Windows?

Attributions