There is a **Preview** tab especial for that at the right side (since Android Studio 2.0):

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/JvL54.png

If the Preview window doesn&#39;t automatically show. You can manually show the Preview window by going to `View -&gt; Tool Windows -&gt; Preview` in Android Studio&#39;s menu.

There is a way to preview all the vector drawables in your project at the same time using the Android Studio plugin at https://plugins.jetbrains.com/plugin/10741-vector-drawable-thumbnails

just go to Settings -&gt; Plugins -&gt; Browse Repositories and search for &quot;Vector Drawable Thumbnails&quot;

Android Studio 1.4 lets you preview VectorDrawables.  Just double-click on them in your `res/drawable` folder.


You can quickly search through vector drawable previews in Android Studio by going to design view in the xml editor and under properties, clicking the ... button next to srcCompat

When you open the vector drawable in Android Studio, there are controls available in the upper right corner of the window. You can choose to switch between `Code`, `Split` and `Design`. 

However these controls only show up if the vector drawable is used in the currently selected build variant. The only way I could see a preview for drawables from other build variants, was to switch to that specific build variant.

[![android studio controls][1]][1]


  [1]: https://i.stack.imgur.com/nkwra.png

Despite these settings, Grafana still requires the use of a password to view Dashboards. Can someone please help me with the correct settings?

    [auth.anonymous]
    # enable anonymous access
    enabled = true
    
    [auth.basic]
    enabled = false

How to set up Grafana so that no password is necessary to view dashboards

As mentioned in [many][1] [other locations][2] on the web, adding a new column to an existing DataFrame is not straightforward. Unfortunately it is important to have this functionality (even though it is inefficient in a distributed environment) especially when trying to concatenate two `DataFrame`s using `unionAll`.

What is the most elegant workaround for adding a `null` column to a `DataFrame` to facilitate a `unionAll`?

My version goes like this:

    from pyspark.sql.types import StringType
    from pyspark.sql.functions import UserDefinedFunction
    to_none = UserDefinedFunction(lambda x: None, StringType())
    new_df = old_df.withColumn(&#39;new_column&#39;, to_none(df_old[&#39;any_col_from_old&#39;]))



  [1]: https://stackoverflow.com/questions/29483498/append-a-column-to-data-frame-in-apache-spark-1-3
  [2]: http://apache-spark-user-list.1001560.n3.nabble.com/Append-column-to-Data-Frame-or-RDD-td22385.html

Add an empty column to Spark DataFrame

Short of building and installing my app, is there a way to preview a vector drawable xml file?

I&#39;ve built it into a small test app in Android Studio, and can preview it as part of the layout file, but I was hoping for a simpler way.

----
Edit: here&#39;s what my drawable.xml file looks like:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;vector xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:width=&quot;24dp&quot;
        android:height=&quot;24dp&quot;
        android:viewportWidth=&quot;24&quot;
        android:viewportHeight=&quot;24&quot;&gt;

        &lt;group&gt;
            &lt;path
                android:fillColor=&quot;#f5a625&quot;
                android:strokeColor=&quot;#000000&quot;
                android:strokeWidth=&quot;.5&quot;
                android:pathData=&quot;M0,0l18,0l6,6l0,10l-24,0z&quot; /&gt;
        &lt;/group&gt;
    &lt;/vector&gt;


Is there a way to preview a vector drawable

Short of building and installing my app, is there a way to preview a vector drawable xml file?
I've built it into a small test app in Android Studio, and can preview it as part of the layout file, but I was hoping for a simpler way.
<hr>
Edit: here's what my drawable.xml file looks like:
<pre><code class="hljs language-ini">&#x3C;?xml version="1.0" encoding="utf-8"?>
&#x3C;vector xmlns:android="http://schemas.android.com/apk/res/android"
 android:width="24dp"
 android:height="24dp"
 android:viewportWidth="24"
 android:viewportHeight="24">

 &#x3C;group>
 &#x3C;path
 android:fillColor="#f5a625"
 android:strokeColor="#000000"
 android:strokeWidth=".5"
 android:pathData="M0,0l18,0l6,6l0,10l-24,0z" />
 &#x3C;/group>
&#x3C;/vector>
</code></pre>

I need to change the navigation bar on android. Just like the &#39;light&#39; variant on the right in the image below [![ ][1]][1]
as given in https://www.google.co.in/design/spec/layout/structure.html#structure-system-bars. 
&lt;br&gt; &lt;br&gt;
Now, I can change the background of the navigation bar by using 

```&quot;android:navigationBarColor&quot;```

I get 

[![enter image description here][2]][2]


but there seems to be no way changing the button color to dark. 

Anyone has the idea how to do it. 

PS: 

While researching in AOSP for the classes responsible for NavigationButtons, I could find [NavigationBarView.java][3], [PhoneStatusBar.java][4], [PhoneWindowManager.java][5], [navigation_bar.xml][6].

I was thinking of get reference of the drawable for the navigationbar buttons like ```ic_sysbar_recent``` and change their tint. But these are private and I cannot get their reference. 

Also, I have seen people using xposed library to do it [L-NAVBAR][7], but I don&#39;t want to use any external library. 


  [1]: http://i.stack.imgur.com/4C3uy.png
  [2]: http://i.stack.imgur.com/nhcH9.png
  [3]: https://github.com/android/platform_frameworks_base/blob/c9390c8baf0a41633c176d6d9a2d7e5d0c61c387/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
  [4]: https://github.com/android/platform_frameworks_base/blob/c9390c8baf0a41633c176d6d9a2d7e5d0c61c387/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
  [5]: https://android.googlesource.com/platform/frameworks/base/+/android-4.2.2_r1/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
  [6]: https://android.googlesource.com/platform/frameworks/base/+/android-4.2.2_r1/packages/SystemUI/res/layout-sw600dp/navigation_bar.xml
  [7]: https://github.com/prithvee/ANDROID-L-NAVBAR

Change navigation bar icon color on Android

**AlarmManager** on **API19** has the method **setExact()** to set an exact alarm.

Exact means --&gt; If I set an alarm to 2:01 pm it will be triggered at 2:01 pm

On **API 23 - Marhsmwallow (6.0)** there is a new method **setExactAndAllowWhileIdle()**, but as of the reference it is not EXACT because it will trigger only **every minute** and in low power idle mode only **every 15 minutes**.

**Exact != every 15 minutes :-)**

So how can I achieve an **exact alarm** with AlarmManager in **6.0**?

If a user adds a reminder or a calendar appointment and wants to be informed 10 minutes before the event it should show the alarm **EXACT 10 minutes before** the event. With setExactAndAllowWhileIdle() this seems is not possible.

Reference Link:
[http://developer.android.com/reference/android/app/AlarmManager.html#setExactAndAllowWhileIdle(int, long, android.app.PendingIntent)][1]


  [1]: http://developer.android.com/reference/android/app/AlarmManager.html#setExactAndAllowWhileIdle(int,%20long,%20android.app.PendingIntent)

setExactAndAllowWhileIdle - is not exact as of developer reference

The third-party libraries that I link into my app often include resource files that aren’t being used by my application, and as such, end up bloating my APK.

For example, including the Google Play services library, but not using the login button functionality; all those image and layout resources end up in my final build.

Since these resources are included in a compiled library, how can I remove them from my build?


How do I remove unused resources from third-party libraries I’ve included on Android?

Is it possible to show the [Android Snackbar][1] above the keyboard (as in Y coordinate, not layering)? The Snackbar currently gets hidden if the keyboard is shown, which is an undesirable behavior. 


  [1]: https://developer.android.com/reference/android/support/design/widget/Snackbar.html

Show Android SnackBar above keyboard?

I have an app that uses external storage to store photographs. As required, in its manifest, the following permissions are requested

    &lt;uses-permission android:name=&quot;android.permission.CAMERA&quot; /&gt;
    &lt;uses-permission android:name=&quot;android.permission.WRITE_EXTERNAL_STORAGE&quot; /&gt;

and it uses the following to retrieve the required directory

    File sdDir = Environment
				.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);

	SimpleDateFormat dateFormat = new SimpleDateFormat(&quot;MM-dd&quot;, Locale.US);
	String date = dateFormat.format(new Date());
	storageDir = new File(sdDir, getResources().getString(
				R.string.storagedir)
				+ &quot;-&quot; + date);

	// Create directory, error handling
	if (!storageDir.exists() &amp;&amp; !storageDir.mkdirs()) {
     ... fails here

The app works fine on Android 5.1 to 2.3; it has been on Google Play for over a year.

Following an upgrade of one of my testing phones (Android One) to 6, it&#39;s now returning an error when trying to create the requisite directory, &quot;/sdcard/Pictures/myapp-yy-mm&quot;.

The sd card is configured as &quot;Portable storage&quot;. I&#39;ve formatted the sd card. I&#39;ve replaced it. I&#39;ve rebooted. All to no avail.

Also, the built-in android screenshot functionality (via Power+Lower volume) is failing &quot;due to limited storage space, or it isn&#39;t allowed by the app or your organisation&quot;.

Any ideas?


Android 6.0 Marshmallow. Cannot write to SD Card

I am unable to find an explicit reference for the use of these functions:
`getBBox()` vs `getBoundingClientRect()` vs `getClientRects()`.

Could you explain what they do and what are the coordinates (and their referential) they return?

getBBox() vs getBoundingClientRect() vs getClientRects()

I am wondering how to set up an inline svg with webpack? 

I am following the [react-webpack-cookbook](https://github.com/christianalfoni/react-webpack-cookbook/wiki/Loading-SVG). 

I have my **webpack.config** set up correctly with the **file loader**. 

However the example shows using a background image like this: 

    .icon {
       background-image: url(./logo.svg);
    }

which works fine, but I want to have an inline svg image how do I do this to include my **logo.svg** inline in my react component?

    import React, { Component } from &#39;react&#39;
    
    class Header extends Component {
    
      render() {
        return (
      		&lt;div className=&#39;header&#39;&gt;
                &lt;img src={&#39;./logo.svg&#39;} /&gt;
      		&lt;/div&gt;
        );
      }
    };
    
    export default Header



how to set up an inline svg with webpack

In angular 2, **svg-rect** is a component which creates **rect** like below,

    &lt;svg height=&quot;550&quot; width=&quot;450&quot; x=&quot;0&quot; y=&quot;0&quot;&gt;
        &lt;g id=&quot;svgGroup&quot;&gt;
            &lt;svg-rect&gt;
            &lt;!--template bindings={}--&gt;
                &lt;rect x=&quot;10&quot; y=&quot;10&quot; height=&quot;100&quot; width=&quot;100&quot; fill=&quot;red&quot; stroke=&quot;#000&quot; stroke-width=&quot;2&quot;&gt;&lt;/rect&gt;
            &lt;!--template bindings={}--&gt;
            &lt;/svg-rect&gt;
            &lt;svg-rect&gt;
            &lt;!--template bindings={}--&gt;
                &lt;rect x=&quot;10&quot; y=&quot;10&quot; height=&quot;100&quot; width=&quot;100&quot; fill=&quot;red&quot; stroke=&quot;#000&quot; stroke-width=&quot;2&quot;&gt;&lt;/rect&gt;
            &lt;!--template bindings={}--&gt;
            &lt;/svg-rect&gt;
        &lt;/g&gt;
    &lt;/svg&gt;

but this won&#39;t render **rect** because of the special element tags created. If *svg-rect* tags are removed it renders the **rect**

    &lt;svg height=&quot;550&quot; width=&quot;450&quot; x=&quot;0&quot; y=&quot;0&quot;&gt;
        &lt;g id=&quot;svgGroup&quot;&gt;
            &lt;!--template bindings={}--&gt;
            &lt;rect x=&quot;10&quot; y=&quot;10&quot; height=&quot;100&quot; width=&quot;100&quot; fill=&quot;red&quot; stroke=&quot;#000&quot; stroke-width=&quot;2&quot;&gt;&lt;/rect&gt;
            &lt;!--template bindings={}--&gt;
            &lt;!--template bindings={}--&gt;
            &lt;rect x=&quot;10&quot; y=&quot;10&quot; height=&quot;100&quot; width=&quot;100&quot; fill=&quot;red&quot; stroke=&quot;#000&quot; stroke-width=&quot;2&quot;&gt;&lt;/rect&gt;
            &lt;!--template bindings={}--&gt;
        &lt;/g&gt;
    &lt;/svg&gt;

In Angular 1.x, there is ***replace: &#39;true&#39;*** which removes the directive tags with the compiled output. Can we implement the same in angular2?

Remove the host HTML element selectors created by angular component

I am working on an Android project and I chose `&lt;vector&gt;` to display icon because it is adaptable and dynamically, however, I just can run this app on devices running Android, which have API 21 or higher. My question is how can I use `&lt;vector&gt;` on lower Android version i.e. API 14 or kind of. Thanks!

    &lt;!-- drawable/ic_android_debug_bridge.xml --&gt;
    &lt;vector xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:height=&quot;48dp&quot;
        android:width=&quot;48dp&quot;
        android:viewportWidth=&quot;24&quot;
        android:viewportHeight=&quot;24&quot;&gt;
        &lt;path android:fillColor=&quot;@color/primaryColorDark&quot;
            android:pathData=&quot;M15,9A1,1 0 0,1 14,8A1,1 0 0,1 15,7A1,1 0 0,1 16,8A1,1 `0 0,1 15,9M9,9A1,1 0 0,1 8,8A1,1 0 0,1 9,7A1,1 0 0,1 10,8A1,1 0 0,1 9,9M16.12,4.37L18.22,2.27L17.4,1.44L15.09,3.75C14.16,3.28 13.11,3 12,3C10.88,3 9.84,3.28 8.91,3.75L6.6,1.44L5.78,2.27L7.88,4.37C6.14,5.64 5,7.68 5,10V11H19V10C19,7.68 17.86,5.64 16.12,4.37M5,16C5,19.86 8.13,23 12,23A7,7 0 0,0 19,16V12H5V16Z&quot; /&gt;&lt;/vector&gt;

How to use VectorDrawables in Android API lower than 21?

I&#39;m trying to get an SVG Favicon on my site but no matter what I do, it just doesn&#39;t want to work.

I&#39;ve got the following code saved as an .svg file in my usual favicon location, but when I change the favicon path to be .svg instead of .ico, nothing loads.

    &lt;svg version=&quot;1.1&quot; xmlns=&quot;http://www.w3.org/2000/svg&quot; xmlns:xlink=&quot;http://www.w3.org/1999/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 384.5 283.4&quot; style=&quot;enable-background:new 0 0 384.5 283.4;&quot; xml:space=&quot;preserve&quot;  width=&quot;100%&quot; height=&quot;100%&quot;&gt;

    &lt;style type=&quot;text/css&quot;&gt;
        .shape1 {fill: #DB6B2A;}
    	.shape2 {fill: #AE1A31;}
    &lt;/style&gt;

    &lt;path class=&quot;shape1&quot; d=&quot;M384.5,83.7c-4.6-19.3-14.3-36.3-29.3-51.3C333.4,10.6,307.6,0,276.7,0c-30.9,0-56.7,10.6-78.4,32.4
	l-4.6,5.1l-4.5-5.1C167.4,10.6,141.6,0,110.8,0S54.1,10.6,32.4,32.4C10.6,54.1,0,79.9,0,110.8v61.1l55.1-12.8v-48.4
	c0-15.2,5.6-28.3,16.2-39C82,60.7,95.1,55.1,110.8,55.1c30.4,0,55.1,25.3,55.1,55.6v22.9l55.6-12.7v-10.1c0-2.5,0-4.6-0.5-7.1
	c1.5-12.1,7.1-22.8,16.2-31.9c10.6-11.1,23.8-16.7,39.5-16.7c25.4,0,46.9,17.2,53.3,40.7&quot;/&gt;

    &lt;path class=&quot;shape2&quot; d=&quot;M54.5,187.6c6.4,23.5,27.9,40.7,53.3,40.7c15.7,0,28.8-5.6,39.5-16.7c9.1-9.1,14.7-19.7,16.2-31.9
	c-0.5-2.5-0.5-4.6-0.5-7.1v-10.1l55.6-12.7v22.9c0,30.4,24.8,55.6,55.1,55.6c15.7,0,28.8-5.6,39.5-16.7
	c10.6-10.6,16.2-23.8,16.2-38.9v-48.4l55.1-12.7v61.1c0,30.9-10.6,56.7-32.4,78.4c-21.7,21.7-47.5,32.4-78.4,32.4
	c-30.9,0-56.7-10.6-78.4-32.4l-4.6-5.1l-4.6,5.1c-21.7,21.7-47.6,32.4-78.4,32.4s-56.7-10.6-78.4-32.4C14.3,236,4.6,219,0,199.7&quot;/&gt;
    &lt;/svg&gt;

This is the code I&#39;m using to set the favicon;

    &lt;link rel=&quot;icon&quot; href=&quot;http://www.MYSITE.co.uk/favicon.svg?v=4&quot;&gt;

I can&#39;t work out if it is an issue with my .svg code, or I&#39;m missing something.
Thanks

Content Type	Original Author	Original Content on Stackoverflow
Question	Edward Falk	View Question on Stackoverflow
Solution 1 - Android	dasar	View Answer on Stackoverflow
Solution 2 - Android	Jade	View Answer on Stackoverflow
Solution 3 - Android	Ignacio Tomas Crespo	View Answer on Stackoverflow
Solution 4 - Android	Paul LeBeau	View Answer on Stackoverflow
Solution 5 - Android	Carson Holzheimer	View Answer on Stackoverflow
Solution 6 - Android	Wirling	View Answer on Stackoverflow

Is there a way to preview a vector drawable

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Solution 4 - Android

Solution 5 - Android

Solution 6 - Android

Add an empty column to Spark DataFrame

How to set up Grafana so that no password is necessary to view dashboards

Attributions