Android Studio questions & answers

Create custom applications for Android devices
Pooja Bajaj
Answer by Pooja Bajaj

To achieve what you're asking, you need to break it down into a few steps. However, you should note that Android Auto is primarily designed for navigation, media, and communication applications and does not natively support running games like Minecraft. Here’s a general approach:

  1. Connect Xbox Controller to Android Device:

    • To connect an Xbox controller to an Android device, you can use either Bluetooth (if you have a Bluetooth-enabled controller) or a USB connection using an OTG (On-the-Go) cable.
    • For Bluetooth: Put your Xbox controller in pairing mode by holding the pairing button until the Xbox button starts flashing. Then, go to your Android device’s Bluetooth settings and pair with the Xbox controller.
    • For USB: Connect the Xbox controller to your Android device using an OTG cable.
  2. Run Minecraft or Other Apps:

    • Install Minecraft on your Android device and ensure it is the version that supports controller input. Unfortunately, direct integration with Android Auto for games is not supported, as Android Auto is focused on minimizing distractions while driving.
  3. Using Android Auto:

    • Android Auto is primarily for apps like Google Maps, music, or messaging. It does not support games such as Minecraft. If you want to use the game interface in your car, you technically can't do it via Android Auto in a road-legal way. The best way to enjoy Minecraft with a controller would be directly on your Android device and not via Android Auto.
    </li>

If you're trying to access more features on your Android device while connected to your car, some users install third-party solutions to have more control over the interface, but this can involve complex setups and potential safety issues. Special caution should be taken as most cars restrict these features to ensure driver safety.

Rajesh Gupta
Answer by Rajesh Gupta

To install the Android operating system on your HP iPAQ 214 PDA is a complex task due to hardware and software compatibility issues. The HP iPAQ 214 runs on Windows Mobile, and there is no official Android support for this old model. You might need to find a community-developed ROM or port for such an installation, but this process is risky and not recommended unless you have technical expertise, as it could render your device unusable. It's essential to back up all data before attempting this, and proceed at your own risk.

Rajesh Gupta
Answer by Rajesh Gupta

Unfortunately, you cannot install games like Angry Birds, Minecraft, or Clash of Clans on Android Auto, as it is designed primarily for navigation, communication, and music playback while driving. Playing games is not supported for safety reasons. If you are looking to play these games, you can do so on your Android smartphone or tablet.

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Question by Prathmesh Shinde
3K views
December 19, 2017

I am working on one project while building gradle it shows gradle sync failed and I am receiving "Error: Unexpected lock protocol found in lock file. Expected 3,found 0." Now I want to know how to solve this error.

S
Answer by Sean Hill

It's actually very simple to overcome this issue. Navigate to the project folder and delete the following one .gradle. Restart the IDE and it should work properly afterwards.


Or in the IDE go to File -> Project Structure then Select Project and locate the gradle version. Navigate to C:\Users\YOURUSERNAME\.gradle\caches and delete the version you've identified.

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Question by Dejene Techane
815 views
April 26, 2017

I installed Android Studio 2.3.1 on Linux 32bit machine (Kali Linux). It is successfully installed. When I tried to create an application, the following errors appeared:


When I start to run an application on the external device, it will generate the following error


Error message: Unable to detect adb version, adb output: /home/elsi/Android/Sdk/platform-tools/adb: 1: /home/elsi/Android/Sdk/platform-tools/adb: Syntax error: ")" unexpected


I tried the following solution on the terminal


elsi@kali-Rolling:~/Android/Sdk/platform-tools$ adb kill-server
elsi@kali-Rolling:~/Android/Sdk/platform-tools$ adb start-server

  • daemon not running. starting it now on port 5037 *
  • daemon started successfully *
    elsi@kali-Rolling:~/Android/Sdk/platform-tools$ adb devices
    List of devices attached
    793532E2034CF208 device

These are the current versions of Android SDK and Gradle version installed:
compileSdk version 25, buildTools version 25.0.3.


Still, the problem is not fixed. When I created a virtual device (emulator) to run the program, it also generates an error saying HAXM requires a genuine Intel processor. I tried to search for some solutions on the Internet, but Kali Linux does not support this processor, therefore, I installed KVM, and other required packages are not supported as well.


Please, I need a serious solution for the above problems.

R
Answer by Robert Polubinski

Access the Android Studio's installation folder and remove the contents of the platform-tools. Then download the archive below and copy all the contents to the platform-tools folder.

This is an issue with the 32 and 64bit architecture mode. It should work after you replace the files. As for the virtual machine, make sure that when you create one to download the requirements and no error appears during the installation.

G
Question by Guest
445 views
March 30, 2018

I created two XML activities. One is for the activity interface layout and another one is the for the coordinator layout. I added the included layout for the interface layout activity into the coordinator layout and I can't see my interface layout from the preview. The preview is blank and these are the errors it's showing me:


Error 1: RENDER PROBLEMS
tag requires a 'drawable' attribute or child tag defining a drawable
___________________________________________________________________________
Error 2: can't make a decor toolbar out of relative layout
java.lang.IllegalStateException: Can't make a decor toolbar out of RelativeLayout
at android.support.v7.widget.ActionBarOverlayLayout.getDecorToolbar(ActionBarOverlayLayout.java:549)
at android.support.v7.widget.ActionBarOverlayLayout.pullChildren(ActionBarOverlayLayout.java:538)
at android.support.v7.widget.ActionBarOverlayLayout.onMeasure_Original(ActionBarOverlayLayout.java:339)
at android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java)
at android.view.View.measure_Original(View.java:22071)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:22035)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
at android.view.View.measure_Original(View.java:22071)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:22035)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.measureView(RenderSessionImpl.java:590)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:343)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:384)
at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:193)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:544)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate$3(RenderTask.java:678)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
S
Answer by Sean Hill

The Mastering Coordinator Layout lessons provided on the GitHub explains exactly what needs to be done in order to make it work. I recommend checking the following URL to access the lessons.


Also, the developers of Android Studio have set up a page with the exact instructions and information on how to proceed with the development part.

N
Question by njay
406 views
January 9, 2017

How do I install the SBT plugin for Android Studio 2.2.3? It doesn't show up in the plugins repositories.

R
Answer by Robert Polubinski

The developer provides a video on its GitHUB page where it explains exactly how to add the plug-in to the Android Studion. You can use its video to adapt it to the Android Studio.


Here is the official page you can use in order to learn how to properly install the plug-in: https://github.com/scala-android/sbt-android

M
Question by Madhav
374 views
March 11, 2018
S
Answer by Sean Hill

The Constraint layout module needs to be installed in your Android Studio. To check if it's installed, go to Preferences > Appearance & Behavior > System Settings > Android and then SDK Tools. Check the Constraint Layout and install it.


Perform a deep restart of everything and then the error shouldn't be there anymore. This is a basic fix to the errors regarding the Constraint Layout.

J
Question by Joeri Dukker
351 views
December 3, 2017

I am making a math quiz where a mathematical question will be asked in the form of a formula. I put my questions in an ArrayList:


ArrayList> quizArray = new ArrayList<>();
String quizData[][] = {
{"x^2", "1", "0", "x", "-1"},
{"x^2", "5", "x", "5x-2", "1"},
{"0", "0", "x", "e", "-1"},
{"x+1", "5", "x", "5x-2", "1"},
{"3", "1", "0", "x", "-1"},
{"642", "34", "97", "5x-2", "1"}
};

As you can see I tried to make the formula x^2, this will not be shown as x with a small exponent 2 but as x^2. This x^2 is not what I want. How can I used for example html in this arraylist to achieve this goal? Or is there another way?

S
Answer by Sean Hill

There are many ways you can display math formulas in Android Studio and practically in any application that you develop. There are modules that parse your input and display the formula exactly as they have to be.


For example, you can use MathView and its source code to display the formula correctly in Android Studio.

Smarttech
Question by Smarttech
343 views
April 18, 2014

I have Android Studio installed on my notebook. However, it isn't running like it should. My notebook runs Windows 8 on 32-bit. Is there a way to overcome this?

L
Answer by Leonard Moore

This is a development tool for Android devices. It seems that there is only one version of the product that can be run on Windows platforms. If you encounter any difficulties in running the application, try to update the program's version to the latest one available. This is advised because newer versions have implemented fixes for some known errors.

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