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Can't install Dropbox plugin for Android Studio

I'm trying to add the latest (v5.1.1) Dropbox plugin to my Android Studio install (Bumblebee 2021.1.1) on Win10. I downloaded the .jar file from releases/v5.1.1 folder to an empty folder, then tried to install it using this method: from the Studio main menu I chose Plugins, selected the gear icon followed by Install Plugin From Disk, browsed to the .jar file location, selected it then pressed OK. I got an error message: "Fail to load plugin from file dropbox-sdk-java-5.1.1.jar". I tried installing the -5.1.1-javadoc.jar file using the same method, with the same result. I don't need the sources, I just want to use the SDK. Any ideas? TIA!

First, I think you meant "Android Studio" instead of "Visual Studio"?
If so, it sounds like you're attempting to install the Dropbox Java SDK as a plugin to Android Studio itself. The Dropbox Java SDK is not an Android Studio plugin though. It is a package for connecting to the Dropbox API from your Java app.
To install the Dropbox package in your app, you should use Maven or Gradle, as instructed here.
The Dropbox Java SDK also comes with an example Android app that uses the Dropbox package.

Thanks, Greg; your answer pointed me in the right direction. I had already added an 'implementation' directive to my Gradle file as per the directions on GitHub. However, I took the instruction to add the directive by editing my "project's build.gradle" too literally; I added it to the Project build.gradle file instead of adding it to the Module build.gradle. Problem solved!

How to fix "JAVA_HOME environment references a directory" in unity3d

I have a problem showed on this screenshot:
Android Resolver
JAVA_HOME environment references a directory (C:\Program
Files\Java\jdk1.8.0_212) that does not contain java which is required
to process Android libraries.
The problem has appeared when I imported GoogleMobileAds package to insert AdMob ads to my project. I tried to create 2 local variables "JAVA_HOME" and "PATH" in environment variables using this guide https://null-code.ru/solution/157-reshenie-exception-jar-not-found-windows.html , but it doesn't help me.

It is a Unity bug. To fix:
Edit->Preferences->External Tools
Uncheck Android SDK Tools Installed with Unity (recommended)
Press Browse -> It might update the filepath
Recheck Android SDK Tools Installed with Unity (recommended)
Then:
Assets->Play Services Resolver->Android Resolver->Resolve
This has been tested and works with Unity 2019, Unity 2020, and Unity 2021.

try
Assets-> Play Services Resolver-> Android Resolver-> Delete Resolved Libraries

check is your Java set true or not:
go to cmd and type JAVA -version
if this appeared means your JDK is set if not check this link: https://confluence.atlassian.com/doc/setting-the-java_home-variable-in-windows-8895.html
after these, if you have the problem again update your JDK
from https://www.oracle.com/technetwork/java/javase/downloads/index.html

i was using admob plugin in my project and this is how i resolved the issue after trying all given solutions.
reimport the admob plugin / plugins you are using in your project. (i just reimport the latest version of admob plugin and issue resolved)

For me it was similar to this answer https://stackoverflow.com/a/57361245/2149955 but just a bit different so sharing a separate answer for when you haven't installed the tools through unity hub.
In Unity:
Edit->Preferences->External Tools
See error messages "You are missing the recommended <TOOL>. Install the recommended version using Unity Hub"
In Unity Hub:
Installs -> My Unity Version -> ... -> Add Modules, Twirl open Android Build Support -> Check Android SDK & NDK Tools (I also checked OpenJDK)
Press Next -> Accept Terms
Wait for install to finish
After that finishes, back in Unity:
If you look in external tools again, the error messages will be gone
Assets->Play Services Resolver->Android Resolver->Resolve

Update to Unity 2019.4.10f
fixed it

When I wanted to make an app for Android, I got this and many more as errors. Nothing worked, including the solutions here. I tried both Unity versions 2020.3.5f1 and 2019.4.22f1, it didn't work.
I figured out that the problem was due to "Android Built Support" not being fully installed. I did the following and the problem was gone:
Unity Hub (my version 2.4.3) -> from the left menu, go Installs
Click the 3 dots in the upper right corner of the Unity version you want (I used 2019.4.22f1) -> Add Modules
From Platforms, find "Android Built Support"
Its check box was checked because I installed it before, but if you don't have it, first install it
Display its submodules with the arrow to its left; "Android SDK & NDK Tools" and "OpenJDK"
Check their check boxes, next and install
Restart Unity
When you open the project, it resolves
It gave me another warning after the resolve, so I made sure that the problem was gone by doing "Assets->External Dependency Maneger->Android Resolver->Force Resolve" in the project again.

I faced this error when I wanted to build for Android. The reason I have faced this is that I had 2 Unity versions (2019.4.9f1 and 2020.3.3f1), and my JAVA_HOME was configured to use the java folder inside 2019.4.9f1. I then uninstalled and removed 2019.4.9f1, and after that, I got this error when trying to build in 2020.3.3f1.
I changed my JAVA_HOME variable permanently, following the link below:
How to set JAVA_HOME in Mac permanently?
Restarted my Macbook.
Went to Unity -> Preferences -> External tools, unchecked NDK, JDK, etc., clicked the Browse button that appeared, and selected the folder under 2020.3.3f1 manually for JDK.
(In the end, no folder should change when you uncheck and check again)

Simple fix. I got this message about Missing the JDK. If you have one that is similar or pointing to the wrong JDK you can try this fix.
Here is the Error I was getting:
I solved this by:
In Unity goto "Edit->Preferences->External Tools"
Unchecked the box "JDK Installed with Unity (recommended)", and noticed that the Path was pointing to an Old version of Unity I had uninstalled.
Changed the Path to the current version of Unity I am usings, OpenJDK directory.
Re-checked the box "JDK Installed with Unity (recommended)"
Then was able to build my game, and build to my android phone just fine.
Note: If your having problems with the SDK or NDK you could try this solution, by unchecking, and re-checking their respective boxes.

This Worked For me:
If u had rectified
JAVA_HOME,
JDK SDK files &
every possible way and solution does not show up try
preference -> in android untick the JDK installed..,
if you see a change in directory then just re tick,
copy path of JDK and uncheck,
finally paste the path close(x) preference TRY BUILD & RUN
Next time you open Unity Editor then try to check & uncheck JDK we have to see the same directory both ways

there is no sdk if you install unity editor without hub.
it seems unity want to use the versions they want. so it's very poor support for previous historty version.
there is a workaround. you can install a version offically recommanded.
and then copy the sdk, ndk, openjdk folder from the offical version folder to the folder you are using. for windows, these folder is like this:
from:
C:\Program Files\Unity\Hub\Editor\2021.3.21f1c1\Editor\Data\PlaybackEngines\AndroidPlayer\OpenJDK
to:
C:\Program Files\Unity\Hub\Editor[your_version]\Editor\Data\PlaybackEngines\AndroidPlayer\OpenJDK

File called 'Flutter' already exists in this location

When i set the Flutter Sdk path i am facing Error Flutter SDK path not given (and one Pop up window open and showing message "File called 'Flutter' already exists in this location") on Android Studio using mac book pro can you handle this solution Thanks in Advance

The trick is not to click on Install Sdk while creating new flutter project but instead give path in the respective text box.
When you click on Install Sdk and take it to your flutter folder, android studio creates a new folder flutter inside your flutter folder and copies all the files.

The problem is probably the fact that you have a file somewhere called flutter. Note that when you download the Flutter SDK using Android Studio will download the SDK into a folder, not a file. For example I downloaded my Flutter SDK in my user folder:
$ ls /Users/gi097/flutter
AUTHORS README.md examples
CODE_OF_CONDUCT.md analysis_options.yaml flutter_console.bat
CONTRIBUTING.md bin packages
LICENSE dartdoc_options.yaml version
PATENTS dev
So, first of all make sure that the folder you choose does not contain a file called flutter before downloading the SDK.
If that does not work, you can also download the SDK manually like the following:
$ cd /Users/yourusername
$ git clone https://github.com/flutter/flutter
$ ./flutter/bin/flutter doctor
Now you can just set the /Users/yourusername/flutter as the SDK location when opening Android Studio or Visual Studio Code. You can also run direct commands with only Flutter itself e.g.:
$ ./flutter/bin/flutter run
It's also worth nothing to read the following manual: https://flutter.io/docs/get-started/install

When you set the Flutter Sdk path you are facing Error Flutter SDK path not given (and one Pop up window open and showing message "File called 'Flutter' already exists in this location") on Android Studio using mac book pro can you handle this solution
Please change your project name and it's working fine.

Just delete the file that has the same name on the location.
It worked for me.

Android Studio aapt.exe missing error message after importing cordova project

Error:Execution failed for task ':CordovaLib:processDebugResources'.
aapt is missing on 'C:\Users\rv498\AppData\Local\Android\Sdk\build-tools\25.0.2\aapt.exe'
Hello, I have done importing cordova project to Android Studio before with no problems. My android studio is the latest stable version because I reinstalled it today (3/17/17). Please help thanks.
BTW, the reason I started to import to Android Studio from Cordova is because I was starting get message about gradle wrapper missing from cordova CLI. I suspect this is SDK Manager issue and I went there but after few attempts, nothing really progressed.

-I had same issue so i opened C:\Users\Sheriff\AppData\Local\Android\sdk\build-tools\24.0.2
-i saw aapt2.exe then i changed it to aapt.exe
-Closed my project on the android studio then opened it back it was working perfectly.

Quick solution
check if aapt.exe is in fact missing C:\Users\rv498\AppData\Local\Android\Sdk\build-tools\25.0.2\
it's there? echeck perms, check %PATH%
it is not there? find where it is. Copy it to the location above
of check why it looks for it in that place. Is there's any config file that got the above path? If so, edit it.

aapt.exe file moved to the latest sdk build tools folder
I just found aapt.exe file in my latest Android-SDK folder (Android_SDK\build-tools\28.0.3)
You can check your latest sdk build-tools folder
or
You can search on total Android SDK folder by file name

installing android sdk 23

i am updating android sdk 23 and i'm getting this error. I am using windows xp.
Error:
Cannot complete the install because of a conflicting dependency.
Software being installed: Android Development Tools 23.0.0.1245622 (com.android.ide.eclipse.adt.feature.feature.group 23.0.0.1245622)
Software currently installed: Android Developer Tools 22.3.0.v201310242005-887826 (com.android.ide.eclipse.adt.package.product 22.3.0.v201310242005-887826)
Only one of the following can be installed at once:
ADT Package 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.adt.package 22.6.3.v201404151837-1123206)
ADT Package 23.0.0.1245622 (com.android.ide.eclipse.adt.package 23.0.0.1245622)
Cannot satisfy dependency:
From: Android Development Tools 23.0.0.1245622 (com.android.ide.eclipse.adt.feature.feature.group 23.0.0.1245622)
To: com.android.ide.eclipse.adt.package [23.0.0.1245622]
Cannot satisfy dependency:
From: Android Development Tools 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.adt.feature.group 22.6.3.v201404151837-1123206)
To: com.android.ide.eclipse.adt.package [22.6.3.v201404151837-1123206]
Cannot satisfy dependency:
From: ADT Package 22.3.0.v201310242005-887826 (com.android.ide.eclipse.adt.package.feature.group 22.3.0.v201310242005-887826)
To: com.android.ide.eclipse.adt.feature.group 22.2.0
Cannot satisfy dependency:
From: Android Developer Tools 22.3.0.v201310242005-887826 (com.android.ide.eclipse.adt.package.product 22.3.0.v201310242005-887826)
To: com.android.ide.eclipse.adt.package.feature.group [22.3.0.v201310242005-887826]

I had the same problem, and was thinking of downloading a clean copy of Eclipse and then going through the installation of all the plug-in, but the sheer amount of hard work defeated my resolve.
I found another way out to update ADT 23 without any hassles on the current instance of Eclipse. :)
I was not sure if the approach will work or not, hence I did not capture the process, Please bear with me. In any case I can't post images I do not have reputation :P
Here's what I did:
Go to the Install new Software option from Help.
Open the available software sites.
Select Your Android site and remove it. Before removing copy the Location, we are going to use the same URL again.
Click OK (this will take you back to the previous screen).
paste the copied URL back into the "Work With" combo on the screen. Click Add.
It will flash a message saying it already has the options available.
Choose to uninstall the previous version and install new.
Voila, it installs ADT 23.
Hope that helps.

This seems to be a problem in the SDK tools rev. 23 update of Google. A lot of people have problems with this upgrade, see:
http://code.google.com/p/android/issues/detail?id=72584
http://code.google.com/p/android/issues/detail?id=72419
The only solution so far is to download a clean version of Eclipse.
I don't like to start with a clean copy and install all the other plugins, so I'll try to copy the SDK folders from this Clean Eclipse instance to your current one.
Edit:
I ended up with setting up a clean copy because I did not want to start more problems. I did the following:
download the Eclipse (luna) bundle you like to use: Eclipse IDE for Java Developers
install Android SDK
I could not update the SDK itself to version 23 so I had to do the following
download the Eclipse Android bundle
make a backup your current android-sdk folder
unzip and copy the sdk folder and copy it over the old android-sdk folder
(The new SDK folder only contains 4.4)
Now you should have a working eclipse and you can start installing all the other plugins you like to use again.