It is a two step process. The unaligned apk is just an intermediate product.

1. the unaligned apk is generated
2. the unaligned gets aligned and produces the aligned apk

The unaligned(signed) APK is needed because signing an aligned apk will undo the alignment.

From the [docs][1]:

&gt; **Caution:** zipalign must only be performed **after** the .apk file has been signed with your private key. If you perform zipalign before signing, then the signing procedure will undo the alignment.

See [this answer][2] for more. [Here][3] is the detailed build process:
[![enter image description here][4]][4]


  [1]: http://developer.android.com/tools/help/zipalign.html
  [2]: https://stackoverflow.com/a/33886306/3193867
  [3]: http://developer.android.com/sdk/installing/studio-build.html#detailed-build
  [4]: http://i.stack.imgur.com/CSoV4.png

To filter a dataframe (df) by a single column, if we consider data with male and females we might:

    males = df[df[Gender]==&#39;Male&#39;]

Question 1 - But what if the data spanned multiple years and i wanted to only see males for 2014?

In other languages I might do something like: 

    if A = &quot;Male&quot; and if B = &quot;2014&quot; then 

(except I want to do this and get a subset of the original dataframe in a new dataframe object)

Question 2. How do I do this in a loop, and create a dataframe object for each unique sets of year and gender (i.e. a df for: 2013-Male, 2013-Female, 2014-Male, and 2014-Female

    for y in year:

    for g in gender:

    df = .....


how do you filter pandas dataframes by multiple columns

I am using font awesome on some project but I have some things that I want to do with font awesome icons, I can easily call an icon like this:

    &lt;i class=&quot;fa fa-lock&quot;&gt;&lt;/i&gt;

Is it possible to all icon always be in round circle with border? Something like this, I have a picture:


![enter image description here][1]


Using 

    i {
      background-color: white;
      border-radius: 50%;
      border: 1px solid grey;
      padding: 10px;
    }

Will do the effect, but the problem is that icons are always bigger that the text or element beside, any solutions?

  [1]: http://i.stack.imgur.com/m7xGh.jpg

Make Font Awesome icons in a circle?

Android gradle produces apk in two binaries: unaligned and aligned.

The [document][1] said...

&gt; Once you have signed the APK with your private key, run zipalign on the file. This tool ensures that all uncompressed data starts with a particular byte alignment, relative to the start of the file. Ensuring alignment at 4-byte boundaries provides a performance optimization when installed on a device. When aligned, the Android system is able to read files with mmap(), even if they contain binary data with alignment restrictions, rather than copying all of the data from the package. The benefit is a reduction in the amount of RAM consumed by the running application.

Seems like aligned apk is strongly recommended to distribute. For me, I only use *aligned* apk as a result product and ignore *unaligned* apk. 
  
Does unaligned apk have any special usage during development?

  [1]: http://developer.android.com/tools/publishing/app-signing.html

why unaligned apk is needed?

Android gradle produces apk in two binaries: unaligned and aligned.
The <a href="http://developer.android.com/tools/publishing/app-signing.html" target="_blank" rel="noopener noreferrer">document</a> said...
> Once you have signed the APK with your private key, run zipalign on the file. This tool ensures that all uncompressed data starts with a particular byte alignment, relative to the start of the file. Ensuring alignment at 4-byte boundaries provides a performance optimization when installed on a device. When aligned, the Android system is able to read files with mmap(), even if they contain binary data with alignment restrictions, rather than copying all of the data from the package. The benefit is a reduction in the amount of RAM consumed by the running application.
Seems like aligned apk is strongly recommended to distribute. For me, I only use aligned apk as a result product and ignore unaligned apk.
Does unaligned apk have any special usage during development?

 what is the regex for the date format yyyy-mm-dd?

I want to validate the email from edittext and check if it matches the regex.

Regex date validation for yyyy-mm-dd

I&#39;m using a standard Android Studio directory structure and I created different build types:



    buildTypes {
        debug {
            runProguard false
            packageNameSuffix &quot;.debug&quot;
            signingConfig signingConfigs.debug
        }
        preview.initWith(buildTypes.debug)
        preview {
            packageNameSuffix &quot;.preview&quot;
        }
        release {
            runProguard false
            signingConfig signingConfigs.release
        }
    }

everything compiles fine, but AS doesnt recognize all of the source folders.
Only folders under `main` and `debug` are marked as source, folders under `preview` and `release` are displayed as normal folders
In effect there is no error checking in those folders

![enter image description here][1]

I checked the .iml file and sourceFolder tags were not added.

If I edit the project iml file manually adding the lines:

     &lt;sourceFolder url=&quot;file://$MODULE_DIR$/src/preview/java&quot; isTestSource=&quot;false&quot; /&gt;
     &lt;sourceFolder url=&quot;file://$MODULE_DIR$/src/preview/res&quot; type=&quot;java-resource&quot; /&gt;

It seems to work fine.

![enter image description here][2]


...until I sync with my gradle file - which removes the above lines.

Is this a bug in gradle plugin, or am I doing something wrong?


  [1]: http://i.stack.imgur.com/N5CUT.png
  [2]: http://i.stack.imgur.com/2tI4P.png

Android studio doesn&#39;t recognise source folders

I have a setup that looks something like this:

    class MyFragment implements SomeEventListener {

        Application mAppContext;    

        boolean mBound;
        boolean mDidCallUnbind;
        MyIBinder mBinder;
        ServiceConnection mConnection = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                mBound = true;
                mBinder = (MyIBinder) service;
                mBinder.getThings();...
            }
    
            @Override
            public void onServiceDisconnected(ComponentName name) {
                mDidCallUnbind = false;
                mBound = false;
                mBinder = null;
            }
        };
    
        ...

        @Override
        public void onSomeEvent() {
            mAppContext.bindService(...);
        }
    
        void unbindService() {
            if (mBound &amp;&amp; !mDidCallUnbind) {
                mDidCallUnbind = true;
                mAppContext.unbindService(mConnection);
            }
        }
    
        @Override
        public void onPause() {
            unbindService();
            super.onPause();
        }
    }

However, I am still seeing the error in the title from time to time: `java.lang.IllegalArgumentException: Service not registered` being generated when `unbindService()` is called.  Am I missing something silly, or is there more going on?  I should note that there may be more than one of this same fragment in existence.

*Edit*

Since no one actually seems to be reading the code, let me explain.  `unbindService()` does not call `Context.unbindService(ServiceConnection)` unless the service is bound (`mBound`) **and** it had not previously been called before the `onServiceDisconnected(...)` callback was hit from a possible previous call to `unbindService()`.  

That in mind, are there any cases where Android will unbind your service for you such that the service would become unbound but onServiceDisconnected would not be called thus leaving me in a stale state?  

Also, I am using my Application context to do the initial binding.  Assume something like:

    @Override
    public void onCreate() {
        mApplication = getContext().getApplicationContext();
    }


Android java.lang.IllegalArgumentException: Service not registered

How to get all keys in `SharedPreferences`, not the value of the preference just key only?


    prefA = getSharedPreferences(&quot;MyAttack&quot;, MODE_PRIVATE);
    prefB= getSharedPreferences(&quot;MySkill&quot;, MODE_PRIVATE);




How to get all keys of SharedPreferences programmatically in Android?

One way to achieve this is as follows:

    adb devices -l
example output:&lt;br/&gt;

    123abc12               device product:&lt;id&gt; model:&lt;id&gt; device:&lt;id&gt;
    456abc45               device product:&lt;id&gt; model:&lt;id&gt; device:&lt;id&gt;

But this list&#39;s out all devices connected, but I want to get the information for a specific device.&lt;br/&gt;I want information only about &quot;123abc12&quot;. The output should be:

    123abc12               device product:&lt;id&gt; model:&lt;id&gt; device:&lt;id&gt;
The second device should not be shown.&lt;br/&gt;
I have the device name i.e 123abc12, and it can be used to get the required information, but I don&#39;t know how.&lt;br/&gt;
Thanks.

Get device information (such as product, model) from adb command

I tried to install my app into Android L Preview Intel Atom Virtual Device, it failed with error:

**INSTALL_FAILED_NO_MATCHING_ABIS**

What does it mean?

INSTALL_FAILED_NO_MATCHING_ABIS when install apk

According to this answer https://stackoverflow.com/questions/15593328/how-to-solve-your-apks-version-code-needs-to-be-higher-than-2-in-google-play I have just changed the version code from 2 to 3 and it failed to upload the build.

This is my old manifest before I uploaded the apk

    &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        package=&quot;mypackage name&quot;
        android:installLocation=&quot;auto&quot;
        android:versionCode=&quot;28&quot;
        android:versionName=&quot;1.0028&quot; &gt;
    
        &lt;uses-sdk
            android:minSdkVersion=&quot;8&quot;
            android:targetSdkVersion=&quot;19&quot; /&gt;
            .....

here is the new version code which I have to upload on android developer console. See my menifest

    &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        package=&quot;mypackage name&quot;
        android:installLocation=&quot;auto&quot;
        android:versionCode=&quot;2&quot;
        android:versionName=&quot;2.0001&quot; &gt;
    
        &lt;uses-sdk
            android:minSdkVersion=&quot;8&quot;
            android:targetSdkVersion=&quot;19&quot; /&gt;
            ......

I dont know whats the issue. Any help?
![enter image description here][1]


  [1]: http://i.stack.imgur.com/sQ7tW.png

Upload failed You need to use a different version code for your APK because you already have one with version code 2

I am having issues installing an apk to my device. 

    adb install &lt;.apk&gt;

Using the above command returns the following:

    5413 KB/s (99747 bytes in 0.017s)
            pkg: /data/local/tmp/AppClient.TestOnly.App3.apk
    Failure [INSTALL_FAILED_TEST_ONLY]

Any idea on what might cause this issue?

It definitely recognizes the device.  Could it be an issue with the apk?


ADB Install Fails With INSTALL_FAILED_TEST_ONLY

In Android Studio, where are the ProGuard mapping files generated after compiling a signed APK?

I&#39;m not sure if it isn&#39;t working or if I just forgot the file path, and my compulsory Google/Stack Overflow search did not answer this

Where does Android Studio save the ProGuard mapping file?

Background
--
I&#39;ve recently migrated [**my app**][1] to Android-Studio. I had some issues doing so, but I got over them eventually.

The problem
--
For some reason, on Android Studio, when I try to sign an APK, I get a lot of errors that look like this:

    Error:(16) Error: &quot;...&quot; is not translated in &quot;de&quot; (German), &quot;el&quot; (Greek), &quot;iw&quot; (Hebrew) [MissingTranslation]

(where &quot;...&quot; is a string) 

At the bottom, after a lot of errors of this kind, I see this:

    Error:Execution failed for task &#39;:app:lintVitalRelease&#39;.
    &gt; 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
        }
    }
    ...

The question
--
I&#39;m not sure what&#39;s wrong and how I can fix it. On Eclipse I did it very easily. Missing translations shouldn&#39;t stop me from signing an APK... 

To me it seems as if Lint is preventing the exporting of the APK, and that the reason is that I didn&#39;t translate all of the strings. Is that true?

Can anyone please help me? How can I fix this, so that Lint will show me just warnings instead? or a confirmation dialog if I&#39;m sure I want to do it?


  [1]: https://play.google.com/store/apps/details?id=com.lb.app_manager

How to sign APK on Android Studio even with non-translated strings?

Using [GitHub&#39;s Release feature](https://github.com/blog/1547-release-your-software), it is possible to provide a link to download a specific version of the published software. However, every time a release is made, the gh-page also needs to be updated.

Is there a way to get a link to a specific file of whatever the latest version of a software is?

e.g., this would be a static link:

`https://github.com/USER/PROJECT/releases/download/v0.0.0/package.zip`

What I&#39;d like is something like:

`https://github.com/USER/PROJECT/releases/download/latest/package.zip`

&gt; NOTE: The difference between this question and
&gt; https://stackoverflow.com/questions/21439239/github-latest-release is
&gt; that this question specifically asks for getting access to the file,
&gt; not the GitHub latest release page

Is there a link to GitHub for downloading a file in the latest release of a repository?

I am able to build a solution using MSBuild.exe, but my issue is I can only manage to get it to build in DEBUG mode. I need to build my solution in Release mode using MSBUILD.

Here is what I&#39;ve tried

    Process msbuild = Process.Start(&quot;C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MsBuild.exe&quot;, solutionfilepath + &quot; /P:Config=Release&quot;);

and

    Process msbuild = Process.Start(&quot;C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MsBuild.exe&quot;, solutionfilepath + &quot; /P:Configuration=Release&quot;);

Building C# Solution in Release mode using MSBuild.exe

I&#39;m trying to upload a release to Fabric &amp; I&#39;m getting errors as follows. I&#39;m using the Xcode 6.3 (recently updated).

 - Xcode: 6.3 
 - Fabric: 1.1.3 
 - OSX: 10.10.3

![An Error from Fabric tool][1]

1. What should I do to resolve above error &amp; continue uploading the release via fabric desktop tool?

2. Is there any other way to upload binary to fabric?

  [1]: https://i.stack.imgur.com/orouk.png

Fabric release Xcode 6.3 codesign xcode-select

In C, we can build a debug version or a release version of the binary files (the object files and the executable). How can we do this in Go? 

How to build a release version binary in Go?

 - What is it exactly?
 - For what is it used?  
 - How widespread is the usage?  
 - How is it usually used?  



Content Type	Original Author	Original Content on Stackoverflow
Question	Youngjae	View Question on Stackoverflow
Solution 1 - Android	flx	View Answer on Stackoverflow
Solution 2 - Android	SMR	View Answer on Stackoverflow

why unaligned apk is needed?

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Make Font Awesome icons in a circle?

how do you filter pandas dataframes by multiple columns

Attributions