Change your LogCat buffer length:

Window / Preferences / Android / LogCat / Maximum number of LogCat messages in buffer _____

Set it to 0 for unlimited size (thanks to the commenter below)

Its happens when there is too many logcat rows. It automatically delete all after reaching maximum number defined in preferences (5000 rows by default in Eclipse), both filtered and not filtered rows. 

Fortunetly, you can change maximum number in: 

Window &gt; Preferences &gt; Android &gt; LogCat &gt; Maximum number of LogCat messages in buffer

I have the same problem, but only with Sony Xperia C and Android 4.2.2. Every phone have different level of logging.

You can use **breakpoints** where you print the messages and **debug them by F6/F8** keys after that. So you can see **all the messages by step**.


I currently use Cython to link C and Python, and get speedup in slow bits of python code. However, I&#39;d like to use goroutines to implement a really slow (and very parallelizable) bit of code, but it must be callable from python. (I&#39;ve already seen [this question][1])

I&#39;m (sort of) happy to go via C (or Cython) to set up data structures etc if necessary, but avoiding this extra layer would be good from a bug fix/avoidance point of view.

What is the simplest way to do this without having to reinvent any wheels?


  [1]: https://stackoverflow.com/questions/1743526/differences-between-go-and-cython

Writing a Python extension in Go (Golang)

I am developing an app that runs on Android/iOS and desktop computers.

Should I use the `click` or the `tap` event?

What are the differences between them?

Will the &#39;tap&#39; work on desktop? if not, (and I have to use `click`) am I missing any advantages that the `tap` has over the `click`?

What is the difference between the click and tap events?

I have been using Eclipse for Android (most up to date version), for a while with no problems with the Logcat. For an unknown reason, Logcat is no longer retaining the debug messages. Logcat is getting cleared in about 5 seconds . Is there any way to prevent the auto-clearing of Logcat messages? Otherwise I am unable to read the messages. 

Eclipse Android - Logcat Clearing too Fast

<p>I have been using Eclipse for Android (most up to date version), for a while with no problems with the Logcat. For an unknown reason, Logcat is no longer retaining the debug messages. Logcat is getting cleared in about 5 seconds . Is there any way to prevent the auto-clearing of Logcat messages? Otherwise I am unable to read the messages.</p>


I am trying to understand the process of how an apk is installed on Android, specifically the Android SDK emulator via adb install (where i am testing).

In searching I have found no satisfactory answer outside of &quot;the apk is simply copied to /data/app and is installed when you run it.  This is not satisfactory to me as it does not explain how the apk&#39;s icon appears on the menu amongst other issues.  

Coming from a Windows background, running an .exe or installer to install a program modifies registries, files, services, etc.... I need to understand if this or something similar occurrs when an apk is installed on Android.  

So if anyone can explain to me what occurrs specifically when an apk is installed on Android I would greatly appreciate it.  

On a side note I would also like to know if the Dalvik VM &quot;`zygote`&quot; is involved in the installation or does it occur at the lower linux kernel level?  

My ultimate goal here is to use strace to caputer the installation process of an apk to document system modifications, file creations, network activity and other events of interest.

Android: Understanding the APK installation process

I&#39;ve created a TimePicker in layout and I want it to show time with format 24h.

Can you help me? Thanks.

How to set TimePicker show with format 24h

How can i see my debug.keystore password? 
I entered my password 3 or 4 month ago and now i don&#39;t remember. 

If it is impossible, how can i create new debug.keystore?

I don&#39;t remember my android debug.keystore password

When I try to launch my **AndEngine Activity**, I get this error:

    ERROR/InputDispatcher(21374): channel &#39;4122e148 my.package.AcGame (server)&#39; ~ Channel is unrecoverably broken and will be disposed!

The app doesn&#39;t crash, but there&#39;s a black screen and the device doesn&#39;t react to pressing the &#39;back&#39; or &#39;home&#39; buttons.

Does anyone know what the problem is?


Why I am Getting Error &#39;Channel is unrecoverably broken and will be disposed!&#39;

How to take a screenshot of other app programmatically without root permission, like Screenshot UX Trial?

 1. I know I can capture the bitmap of the root view in my app. But I can&#39;t get the root view of the other app when my app is running in background

    `bitmap = Bitmap.createBitmap(rootview.getDrawingCache());`

 2. There is a permission for capturing current frame buffer in Manifest: `android.permission.READ_FRAME_BUFFER`. But some website says it&#39;s for signature app only.

    [Check Android Permissions - Protection Levels][1]

After trying Screenshot UX Trial, I read the permission:

- INTERNET: for connect to localhost screenshot server for rooted phone.
- SYSTEM_ALERT_WINDOW: for topmost camera button.
- VIBRATE: for vibrate feedback.
- WRITE_EXTERNAL_STORAGE: to save the screenshot.
- GET_TASKS: for detect foreground Develoment setting activity for non rooted&amp;non preloaded capture method.

It seems either `SYSTEM_ALERT_WINDOW` or `GET_TASKS` allow the app to take screenshot.
I have two guess of how it works:

 1. It may be able to access the `Activity` of the foreground activity, it gets the root view of the `Activity`, capture its screenshot.
 2. Calling `glreadpixels`

If you try one of my guess, please let me know the result.


  [1]: http://rupertrawnsley.blogspot.hk/2011/11/android-permissions-protection-levels.html

How to take a screenshot of other app programmatically without root permission, like Screenshot UX Trial?

I understand this occurs with Java 7 when using varargs with a generic type;

But my question is..

What exactly does Eclipse mean when it says &quot;its use could potentially pollute the heap?&quot;

And 

How does the new `@SafeVarargs` annotation prevent this?

Possible heap pollution via varargs parameter

Why does Eclipse give me the warming &quot;Resource leak: &#39;in&#39; is never closed&quot; in the following code?

    public void readShapeData() {
            Scanner in = new Scanner(System.in);
            System.out.println(&quot;Enter the width of the Rectangle: &quot;);
            width = in.nextDouble();
            System.out.println(&quot;Enter the height of the Rectangle: &quot;);
            height = in.nextDouble();

Resource leak: &#39;in&#39; is never closed

I created one android application project in eclipse and whenever I tried to run that application its throwing an error message saying `AndroidManifest.xml` file is missing. what is the reason for this ? 

   I am using eclipse with android-sdk and ADT version is 20. in SDK manager I installed android 2.2 API level only.. Is this is the problem for that error ? 

AndroidManifest.xml is missing

I have put log4j to my buildpath, but I get the following message when I run my application:

    log4j:WARN No appenders could be found for logger (dao.hsqlmanager).
    log4j:WARN Please initialize the log4j system properly.
    log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

What do these warnings mean?  Whats the appender here?

No appenders could be found for logger(log4j)?

    org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5
        at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:129)
        at org.eclipse.m2e.core.internal.project.registry.EclipsePluginDependenciesResolver.resolve(EclipsePluginDependenciesResolver.java:48)
        at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:142)
        at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getMojoDescriptor(DefaultMavenPluginManager.java:261)
        at org.apache.maven.plugin.DefaultBuildPluginManager.getMojoDescriptor(DefaultBuildPluginManager.java:185)
        at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.setupMojoExecution(DefaultLifecycleExecutionPlanCalculator.java:152)
        at org.eclipse.m2e.core.internal.embedder.MavenImpl.setupMojoExecution(MavenImpl.java:386)
        at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.setupMojoExecution(ProjectRegistryManager.java:865)
        at org.eclipse.m2e.core.internal.project.registry.MavenProjectFacade.getMojoExecution(MavenProjectFacade.java:355)
        at org.eclipse.m2e.core.project.configurator.AbstractCustomizableLifecycleMapping.getBuildParticipants(AbstractCustomizableLifecycleMapping.java:66)
        at org.eclipse.m2e.core.project.configurator.AbstractLifecycleMapping.configure(AbstractLifecycleMapping.java:87)
        at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:414)
        at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:351)
        at org.eclipse.m2e.core.ui.internal.UpdateMavenProjectJob.runInWorkspace(UpdateMavenProjectJob.java:74)
        at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
    Caused by: org.sonatype.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5
        at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:296)
        at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:186)
        at org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:279)
        at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:115)

I have read where many people were able to solve this by:

- Deleting the folder from the local repository and letting it re-download it (this did **not** work)

- By configuring eclipse to target your maven installation instead of the embedded one as described here (this did **not** work)

  https://stackoverflow.com/questions/7378279/could-not-calculate-build-plan-artifact-org-apache-maven-pluginsmaven-resource

**I am new to Maven** so please excuse any of my ignorance.

This project is working on another machine, and just pulled it down from the repository on this one, with the same version of eclipse and m2e plugin installed. I have been fooling with this for over 10 hours now and it is driving me nuts (Maven has been nothing but headaches for me so far...)

### EDITS

After looking closer I did notice that it is not downloading the .jar files into the local repository... I am not sure if that is something obvious...

I am not given the option to add Maven Dependencies to the build path.

Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved

Anyone knows what does this error mean? I get it in LogCat shell every time I connect with my android application to Facebook (via emulator).

The code which in charge of authorize functionality:

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.authorize);
		mPrefs = getPreferences(MODE_PRIVATE);
		loginPref = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
        String access_token = mPrefs.getString(&quot;access_token&quot;, null);
        long expires = mPrefs.getLong(&quot;access_expires&quot;, 0);
        if(access_token != null) {
        	Singelton.mFacebook.setAccessToken(access_token);
        }
        if(expires != 0) {
        	Singelton.mFacebook.setAccessExpires(expires);
        }
		
    	Singelton.mFacebook.authorize(this, new String[] {&quot;email&quot;,&quot;user_birthday&quot;}, new DialogListener() {
            @Override
            public void onComplete(Bundle values) {
                SharedPreferences.Editor editor = mPrefs.edit();
                editor.putString(&quot;access_token&quot;, Singelton.mFacebook.getAccessToken());
                editor.putLong(&quot;access_expires&quot;, Singelton.mFacebook.getAccessExpires());
                editor.commit();
                SharedPreferences.Editor logEditor = loginPref.edit();
                logEditor.putBoolean(&quot;login&quot;, true);
                logEditor.commit();
                addUser();
            }

            @Override
            public void onFacebookError(FacebookError error) {
            	errorHandler();
            }

            @Override
            public void onError(DialogError e) {
            	errorHandler();
            }

            @Override
            public void onCancel() {
            	Log.d(&quot;MyApp&quot;, &quot;Facebook cancel&quot;);
            }
        });
			
	}

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Singelton.mFacebook.authorizeCallback(requestCode, resultCode, data);
    }

Failed to find provider info for com.facebook.katana.provider.AttributionIdProvider

I want to read and react to logcat logs within my application.

I found the following code: 

    try {
      Process process = Runtime.getRuntime().exec(&quot;logcat -d&quot;);
      BufferedReader bufferedReader = new BufferedReader(
      new InputStreamReader(process.getInputStream()));
    
      StringBuilder log=new StringBuilder();
      String line = &quot;&quot;;
      while ((line = bufferedReader.readLine()) != null) {
	    log.append(line);
      }
      TextView tv = (TextView)findViewById(R.id.textView1);
      tv.setText(log.toString());
      } 
    catch (IOException e) {}

This code indeed returns the logcat logs that made until the application was started  - 

But is it possible to continuously listen to even new logcat logs?

Read logcat programmatically within application

Is there an easy way to print the contents of a `Bundle` to Logcat if you can&#39;t remember the names of all the keys (even being able to print just the key names would be cool)?

Print the contents of a Bundle to Logcat?

I have recently started to use Android Studio v0.1.1, And i can&#39;t seem to find LogCat... Is it gone? Or if not, how can I enable it?

If it is gone, is there any way to enable something similar to log my app behavior (and mainly crashes)?

Restore LogCat window within Android Studio

I installed Android Studio yesterday, and I tried to use the LogCat to see the logs. But there is nothing to show in the logcat. I used the terminal to run `./adb logcat` and it works.  

Is there someone who can explain to me how to use logcat in Android Studio?

Content Type	Original Author	Original Content on Stackoverflow
Question	nomaam	View Question on Stackoverflow
Solution 1 - Android	323go	View Answer on Stackoverflow
Solution 2 - Android	ivan.panasiuk	View Answer on Stackoverflow
Solution 3 - Android	JunR	View Answer on Stackoverflow

Eclipse Android - Logcat Clearing too Fast

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

What is the difference between the click and tap events?

Writing a Python extension in Go (Golang)

Attributions