A clean just removes all build artifacts.  A rebuild does a clean followed by a build of your project.

***EDIT #2*** This is 100% true. Refer to [this](https://stackoverflow.com/a/47179692/2737933) for a thorough demonstration of its correctness.




What I experienced,

When you do clean, it removes the binaries inside **build** folders, and postpones building them again to the next run.

When you do rebuild, it does clean and rebuild for those files inside **build** folder, which rebuilt again in the next run. It does not rebuild the APK!! Which is really weird.

so:

Clean removes the build folders contents.

Rebuild removes the build folder&#39;s contents. And builds some binaries; not including the APK!

BTW, I am using Android studio 2.0 Preview 7.

I was working on a .js file this morning on Notepad++, as usual, when the program just crashed. So I ended it, and re-opened it to see that all my code lines in my .js file, had disappeared, and now all I have left is the file with a size of 0kb because there&#39;s nothing left in it. How the hell is that even possible ? It erased everything I typed and saved the file as if there&#39;s nothing in it. 

Do you know a way to get my code back ? Or did something like this ever happened to someone ? :/ I&#39;m kinda worried because there was a lot of work there and I don&#39;t feel like re-typing it all...

Lost code lines when Notepad++ crashed

I have the following schema:

    CREATE TABLE author (
        id   integer
      , name varchar(255)
    );
    CREATE TABLE book (
        id        integer
      , author_id integer
      , title     varchar(255)
      , rating    integer
    );

And I want each author with its last book:

    SELECT book.id, author.id, author.name, book.title as last_book
    FROM author
    JOIN book book ON book.author_id = author.id
    
    GROUP BY author.id
    ORDER BY book.id ASC

Apparently you can do that in mysql: https://stackoverflow.com/questions/6468314/join-two-tables-returning-just-one-row-from-the-second-table-mysql.

But postgres gives this error:

&gt; ERROR: column &quot;book.id&quot; must appear in the GROUP BY clause or be used
&gt; in an aggregate function: SELECT book.id, author.id, author.name,
&gt; book.title as last_book FROM author JOIN book book ON book.author_id =
&gt; author.id GROUP BY author.id ORDER BY book.id ASC

[It&#39;s because][1]:

&gt; When GROUP BY is present, it is not valid for the SELECT list
&gt; expressions to refer to ungrouped columns except within aggregate
&gt; functions, since there would be more than one possible value to return
&gt; for an ungrouped column.

How can I specify to postgres: &quot;Give me only the last row, when ordered by `joined_table.id`, in the joined table ?&quot;

-----------
Edit:
With this data:

    INSERT INTO author (id, name) VALUES
      (1, &#39;Bob&#39;)
    , (2, &#39;David&#39;)
    , (3, &#39;John&#39;);
    
    INSERT INTO book (id, author_id, title, rating) VALUES
      (1, 1, &#39;1st book from bob&#39;, 5)
    , (2, 1, &#39;2nd book from bob&#39;, 6)
    , (3, 1, &#39;3rd book from bob&#39;, 7)
    , (4, 2, &#39;1st book from David&#39;, 6)
    , (5, 2, &#39;2nd book from David&#39;, 6);

I should see:

    book_id author_id name    last_book
    3       1         &quot;Bob&quot;   &quot;3rd book from bob&quot;
    5       2         &quot;David&quot; &quot;2nd book from David&quot;

  [1]: http://www.postgresql.org/docs/current/interactive/sql-select.html#SQL-GROUPBY

How to join only one row in joined table with postgres?

**What is the difference between `Clean Project` and `Rebuild Project` (in Android Studio)?**

- I had a problem with the `R file` about `res` `ids`, so I changed the file extension from `gif` to `png` and then [my build failed.]
- I found the solution was to `Rebuild Project`.  This prompts my question above.

Difference between clean project and rebuild project in android studio

<p><strong>What is the difference between <code>Clean Project</code> and <code>Rebuild Project</code> (in Android Studio)?</strong></p>
<ul>
<li>I had a problem with the <code>R file</code> about <code>res</code> <code>ids</code>, so I changed the file extension from <code>gif</code> to <code>png</code> and then [my build failed.]</li>
<li>I found the solution was to <code>Rebuild Project</code>.  This prompts my question above.</li>
</ul>


I would like to create the same border of this LinearLayout as the example :

![enter image description here][1]

In this example, we can see that the border is not the same all around the linearLayout.
How can I create this using an XML drawable file?

For now, I have only able to create a simple border all around the LinearLayout like this :

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;shape xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:shape=&quot;rectangle&quot;&gt;
      &lt;corners
          android:radius=&quot;1dp&quot;
          android:topRightRadius=&quot;0dp&quot;
          android:bottomRightRadius=&quot;0dp&quot;
          android:bottomLeftRadius=&quot;0dp&quot; /&gt;
      &lt;stroke
          android:width=&quot;1dp&quot;
          android:color=&quot;#E3E3E1&quot; /&gt;
      
      &lt;solid android:color=&quot;@color/blanc&quot; /&gt;
      
    &lt;/shape&gt;


  [1]: http://i.stack.imgur.com/K7l7d.jpg


Android LinearLayout : Add border with shadow around a LinearLayout

I&#39;ve tried to upload my apk on google play and encountered an error message: &quot;You uploaded a debuggable APK. For security reasons you need to disable debugging before it can be published in Google Play. Learn more about debuggable APKs.&quot;

Then I wrote `android:debuggable=&quot;false&quot;` in my manifest and tried again. I&#39;ve encountered the same error, so I&#39;ve set the build variant from my module to release and tried generated an apk again, but this time, this error is generated:

    Error:Gradle: Execution failed for task &#39;:app:lintVitalRelease&#39;.
    Lint found fatal errors while assembling a release target.
      To proceed, either fix the issues identified by lint, or modify your build script as follows:
      ...
      android {
          lintOptions {
              checkReleaseBuilds false
              // Or, if you prefer, you can continue to check for errors in release builds,
              // but continue the build even when errors are found:
              abortOnError false
          }
      }
      ...



&#39;:app:lintVitalRelease&#39; error when generating signed apk

I am trying to send a request to the Google GeoCode API using Retrofit.  The service interface looks like this:

    public interface FooService {    
        @GET(&quot;/maps/api/geocode/json?address={zipcode}&amp;sensor=false&quot;)
        void getPositionByZip(@Path(&quot;zipcode&quot;) int zipcode, Callback&lt;String&gt; cb);
    }

When I call the service:

    OkHttpClient okHttpClient = new OkHttpClient();
		
    RestAdapter restAdapter = new RestAdapter.Builder().setEndpoint(Constants.GOOGLE_GEOCODE_URL).setClient(new OkClient(okHttpClient)).build();
		
    FooService service = restAdapter.create(FooService.class);
	    
    service.getPositionByZip(zipCode, new Callback&lt;String&gt;() {
        @Override public void success(String jsonResponse, Response response) {
           ...
        }
	@Override public void failure(RetrofitError retrofitError) {
        }
    });

I receive the following stacktrace:

    06-07 13:18:55.337: E/AndroidRuntime(3756): FATAL EXCEPTION: Retrofit-Idle
    06-07 13:18:55.337: E/AndroidRuntime(3756): Process: com.marketplacehomes, PID: 3756
    06-07 13:18:55.337: E/AndroidRuntime(3756): java.lang.IllegalArgumentException: FooService.getPositionByZip: URL query string &quot;address={zipcode}&amp;sensor=false&quot; must not have replace block.
    06-07 13:18:55.337: E/AndroidRuntime(3756): 	at retrofit.RestMethodInfo.methodError(RestMethodInfo.java:120)
    06-07 13:18:55.337: E/AndroidRuntime(3756): 	at retrofit.RestMethodInfo.parsePath(RestMethodInfo.java:216)
    06-07 13:18:55.337: E/AndroidRuntime(3756): 	at retrofit.RestMethodInfo.parseMethodAnnotations(RestMethodInfo.java:162)
    06-07 13:18:55.337: E/AndroidRuntime(3756): 	at 

I took a look at the StackOverflow question: https://stackoverflow.com/questions/19975046/java-retrofit-robospice-multiple-parameters-in-get-command but it did not seem applicable.

I took the code pretty much verbatim from here: http://square.github.io/retrofit/ so I am a bit of a loss to understand the issue.

Thoughts?

Retrofit and GET using parameters

I use **FloatLabel** library (https://github.com/weddingparty/AndroidFloatLabel) to add a little animation when user begin to write something in an EditText Android.

My problem is that the typeface seems to be changed when i apply the password type to my EditText. I would like to keep the same typeface as normal. (see picture 1)

![enter image description here][1]

But when i add the following line to apply password type, the typeface of hint seems to be changed !

    pass.getEditText().setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);



![enter image description here][2]


  [1]: http://i.stack.imgur.com/tcD78.jpg
  [2]: http://i.stack.imgur.com/malFC.jpg

Android : Typeface is changed when i apply password Type on EditText

I&#39;m trying to work with build flavors. In my build.gradle I&#39;ve defined 2 flavors, a normal flavor and an admin flavor.

Basicly, the admin flavor has an extra button on the main activity.

I understand that I can define different packages/classes for different flavors. But is there a way to make a sort of if case to add/remove a piece of code depending on the flavor?

Basicly, I would need two versions of an Activity. But I don&#39;t want two entire different versions of the activity and maintain them. 

So in my activity I would like to do

=&gt; gradle check if flavor is &#39;admin&#39; 

=&gt; if yes, add this code of the button

Is this possible? Or would you need two different physical activities and thus maintain both of them when you add functionality afterwards.

Android using Gradle Build flavors in the code like an if case

I am on Android Studio (Preview) 0.6.0 on Windows and was trying to share my project on GitHub. I used Git Shell to initialize, add, commit and push the project to GitHub. But when I tried to update my project from within Android Studio ![enter image description here][1], I got this error:

    Can&#39;t update: no tracked branch
    No tracked branch configured for branch master.
    To make your branch track a remote branch call, for example,
    git branch --set-upstream master origin/master

It does provide this suggestion but I am not sure what to do at this point. Is there a way to fix this from within Android Studio?


  [1]: http://i.stack.imgur.com/SS9e6.png

Can&#39;t update: no tracked branch

I can&#39;t attach Android Studio&#39;s debugger to my debuggable application process. Anyone else had this issue? Basically I can&#39;t get my app listed in `Choose Process` dialog. 

I&#39;m selecting `Attach debugger to Android process`:

![Attach debugger to Android process][1]

And then, here&#39;s how `Process selection` dialog from Android Studio looks like:

![No app is in the list to be debugged][2]

Any ideas why my app is not shown in the `Choose Process` list?

Although, `DDMS` sees my app in `Devices | logcat` list:

![`Devices | logcat` list][3]

`Android Monitor` also sees the app in `Devices` list:

![Android Monitor | Devices list][4]

I&#39;ve tried these actions:

* Restarting `MacBook` 
* Restarting devices: tried with `Samsung Galaxy Note II N7100` (4.3) and `Samsung Galaxy S4` (4.4.2)
* Reenabling `Settings-&gt;Developer Options` on the devices
* Reenabling `Settings-&gt;Developer Options-&gt;USB debugging` on the devices
* Restarting `adb` by running `adb kill-server` and `adb start-server`
* Reconnecting device from macbook and/or plugging to another USB port
* Launching Genymotion virtual device on macbook
* `restarting in TCP mode port: 5555` by running `adb tcpip 5555` and then connecting to it with `adb connect 192.168.1.87`
* `Waiting more`&amp;`Restart` when got this error saying `ADB not responding. You can wait more, or kill &quot;adb&quot; process manually and click &#39;Restart&#39;` `Errors in ADB:` `ddms: &#39;$ANDROID_HOME/platform-tools/adb,start-server&#39; failed -- run manually if necessary` [Error screenshot][5]

**Update:**

What I&#39;ve noticed is that device appears multiple times in the `Android DDMS`-&gt;`Devices | logcat` list. If I choose 1st device from the list, it shows, there&#39;s `No debuggable applications`, but I select last device (4th in the screenshot) I see my debuggable application. See screenshots: [1st][6] and [4th][7]. Although, even there&#39;s only 1 device in the list and showing debuggable device and application, process still does not appear in the `Choose Process` dialog.


  [1]: http://i.stack.imgur.com/dxirc.png
  [2]: http://i.stack.imgur.com/USVj7.png
  [3]: http://i.stack.imgur.com/EEx93.png
  [4]: http://i.stack.imgur.com/XPAdE.png
  [5]: http://i.stack.imgur.com/kWEdv.png
  [6]: http://i.stack.imgur.com/Syqo8.png
  [7]: http://i.stack.imgur.com/y5Etm.png

Can&#39;t attach Android Studio&#39;s debugger to Android process

I&#39;d like to create an aar file for my library in Android Studio, i would&#39;ve gone with a jar option but my library has resources.

Any idea how to create an aar file from a library?

Create aar file in Android Studio

I read many threads how to add a *.so library to Android Studio, but none of them works, especially when it comes to the point of text: This does not work with the newer xxx (Android Studio, gradle, ...)

Can we make a fresh start please. I got:

Android Studio 0.6.0

From Project Structure I see:

SDK Location:

    /usr/share/android-studio/data/sdk
    /usr/lib/jvm/default-java

Project:

    Gradle version 1.10
    Android Plugin Version 0.11.+

Modules/app:
Properties:

Compile Sdk Version 19
Build Tools Version 19.1.0

Dependencies:

    {dir=libs, include=[*.jar]}	Compile
    
    {dir=libs, include=[*.so]}	Provided
    
    m com.android.support: appcompat -v7:19.+	Compile



I got the *.so files pre-compiled and at the demo app they are working. I have to change the source code of the app, so I need to rebuild with the same *.so files.



How to include *.so library in Android Studio?

Apologies if this seems redundant as I know there are fair amount of questions regarding Merge vs Rebase, but there doesn&#39;t seem to be any that throw in &#39;Branch Default&#39; as well. 

You are given a case where you have multiple people working on something (i.e. an Android app in Android Studio) concurrently. What is the best option to update project/pull if someone pushes to the master branch and you want to pull in the new master such that it doesn&#39;t overwrite the work you are still working on and have yet to commit and push to master? Android Studio lists &#39;Merge&#39; &#39;Rebase&#39; and &#39;Branch Default&#39; when clicking &#39;Update Project&#39;. From what it sounds like, I would want to do &#39;Rebase&#39; (followed by &#39;Merge&#39;?), but I&#39;m not entirely sure.

Android Studio Update Project: Merge vs Rebase vs Branch Default

I get the following error when running Unit tests in IntelliJ:
Error: Could not find or load main class ${surefireArgLine}.
I am using maven and in pom.xml I have:

    &lt;properties&gt;
        ...
        &lt;surefire.argLine /&gt;
    &lt;/properties&gt;

	&lt;build&gt;
		&lt;plugins&gt;
			&lt;plugin&gt;
				&lt;groupId&gt;com.mysema.maven&lt;/groupId&gt;
				&lt;artifactId&gt;apt-maven-plugin&lt;/artifactId&gt;
				&lt;version&gt;1.1.1&lt;/version&gt;
				&lt;executions&gt;
					&lt;execution&gt;
						&lt;goals&gt;
							&lt;goal&gt;process&lt;/goal&gt;
						&lt;/goals&gt;
						&lt;configuration&gt;
							&lt;outputDirectory&gt;target/generated-sources/java&lt;/outputDirectory&gt;
							&lt;processor&gt;com.mysema.query.apt.jpa.JPAAnnotationProcessor&lt;/processor&gt;
						&lt;/configuration&gt;
					&lt;/execution&gt;
				&lt;/executions&gt;
			&lt;/plugin&gt;

			&lt;plugin&gt;
			&lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
			&lt;artifactId&gt;maven-surefire-plugin&lt;/artifactId&gt;
			&lt;version&gt;2.17&lt;/version&gt;
			&lt;configuration&gt;
				 &lt;!--Sets the VM argument line used when unit tests are run.--&gt;
                &lt;argLine&gt;${surefire.argLine}&lt;/argLine&gt;
			&lt;/configuration&gt;
		&lt;/plugin&gt;
      &lt;plugin&gt;
                &lt;groupId&gt;org.jacoco&lt;/groupId&gt;
                &lt;artifactId&gt;jacoco-maven-plugin&lt;/artifactId&gt;
                &lt;version&gt;0.7.1.201405082137&lt;/version&gt;
                &lt;executions&gt;
                    &lt;!--
                        Prepares the property pointing to the JaCoCo runtime agent which
                        is passed as VM argument when Maven the Surefire plugin is executed.
                    --&gt;
                    &lt;execution&gt;
                        &lt;id&gt;pre-unit-test&lt;/id&gt;
                        &lt;goals&gt;
                            &lt;goal&gt;prepare-agent&lt;/goal&gt;
                        &lt;/goals&gt;
                        &lt;configuration&gt;
                            &lt;!--Sets the path to the file which contains the execution data.--&gt;
                            &lt;destFile&gt;${project.build.directory}/coverage-reports/jacoco-ut.exec&lt;/destFile&gt;
                            &lt;!--
                                Sets the name of the property containing the settings
                                for JaCoCo runtime agent.
                            --&gt;
                            &lt;propertyName&gt;surefireArgLine&lt;/propertyName&gt;
                        &lt;/configuration&gt;
                    &lt;/execution&gt;
       ...

Did anyone have similiar problem? How to set value for surefireArgLine?

IntelliJ Error when running unit test: Could not find or load main class ${surefireArgLine}

I&#39;ve googled for this and found out how to do with with other regex parsers:

    http://vim.wikia.com/wiki/Changing_case_with_regular_expressions
    http://www.regular-expressions.info/replacecase.html

I&#39;ve tried these and neither work.  As an example, I want to use a regex to change this:

    private String Name;
    private Integer Bar = 2;

To this:

    private String name;
    private Integer bar = 2;

I tried something like this:

    replace: private (\S+) (\S+)
    with: private $1 $L$2
    with: private $1 \L$2
    with: &lt;etc.&gt;

None of them work.  Is it possible to do this in intellij, or is this a missing feature?  This is just for educational purposes and the example is contrived. I just want to know if this is possible to do in intellij.

How can I use a regex to replace upper case with lower case in Intellij IDEA?

The ctrl-shift-v paste buffer in IntelliJ is great, but only holds 5 items. Is it possible to increase the size of this buffer?

Similar to [this comment](https://stackoverflow.com/questions/1716793/copy-and-pasting-multiple-items-to-the-clipboard-in-intelli-j-idea#comment29733286_1716797) on another question

Searching within IntelliJ settings hasn&#39;t shown up anything, neither has google.

Can you increase the paste buffer size in IntelliJ IDEA

In IntelliJ IDEA, I have defined a live template like this:

&lt;!-- language: java --&gt;

    @Inject
    private void postInject() {
      //I want the cursor to be placed here after the execution of the live template.
    }

Is there a way to tell IntelliJ to place the cursor inside of the method body after expanding the live template?

Choose position of cursor after a live template

I created a new Scala/sbt project in IntelliJ IDEA 13.  Since other team members will be working on this project (presumably with other IDEs), what should I put in the `.gitignore`?  It seems some of the project dependencies are defined in the `.idea` folder, so I wasn&#39;t sure if I can put the whole directory in `.gitignore` or not.

Content Type	Original Author	Original Content on Stackoverflow
Question	Fukkong	View Question on Stackoverflow
Solution 1 - Android	Larry Schiefer	View Answer on Stackoverflow
Solution 2 - Android	MBH	View Answer on Stackoverflow

Difference between clean project and rebuild project in android studio

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

How to join only one row in joined table with postgres?

Lost code lines when Notepad++ crashed

Attributions