I am using the Android Studio to create a new flutter project, but it just got stuck when creating the project, for hours. I don't know what to do, need help.
BTW, I am using Mac, there seems no opening with administration mode in it.
It takes Internet Connection for the first time for building the application in flutter, and other aspect also may effects like hardware configuration.
Try starting Android Studio in Administrator mode
Make sure that you have not ticked the "create project offline checkbox".
Keep the "Flutter SDK location" and "Project location" in a local path
(e.g. c:\users\xxxxxx)
I ran into similar problem on my Mac. The following was my state of my machine at the time of the problem.
I had upgraded to macOS Big Sur.
My copy of Android Studio was working before the upgrade.
My copy of flutter was installed using brew before the upgrade.
When I ran into the problem, after a bit of reading,
I uninstalled and reinstalled flutter using brew, and problem went away.
For me, I think there must have some change in directory permission settings that caused Android Studio to get stuck when creating application.
Related
So I recently started working with my friend on his app project and I've had trouble building his react-native based project. It's both ios and android.
On android, I can get as far as building, but when I run the app shuts down instantly or shows a red screen with some firebase error.
On ios, I get a build error.
My question is: what do I need to install when I first pull the repo from github? I run '''yarn install''' straight away and run '''pod install''' from the ios folder but that isn't enough. Anything I should run for android more than the yarn install command I had already used?
Thanks!
It seems your development environment is not set up yet. Follow this link to set up your environment.
I've been working on a Xamarin project for a few days and have been testing it fine, but today it has suddenly stopped allowing me to debug the app, either via Live Player, or by connecting my smart phone via USB.
The only error I am getting, as far as I can see, is
Failed to debug your app
I've not got a way of testing it on iOS devices, but the built-in Windows Phone emulator runs the app fine, albeit with an error in my code popping up now and then.
What could be causing the Android version to stop debugging, or how do I at least fix it?
There are a couple of steps that can help with that issue:
Clean the solution and exit visual studio
manually delete the .vs folder in your solution directory
Delete the /obj and /bin folders in your shared code, and in each project for the platforms you are using
if you are developing for iOS, sometimes it helps to restart your mac
Start Visual Studio
Rebuild your shared code project
Rebuild every native project
Beyond that also make sure that you are using the latest versions of Visual Studio, Xamarin and Xamarin.Forms on all your computers, and that the nuGet Packages your project is using are at the very same version each in shared and native code
Also check, if your app isn't throwing an unexpected exception during its initialization. Especially if not caught, it can happen that your app crashes before your code gets executed at all.
In addition you may find further information about what is going on at Help -> Xamarin -> Open logs or in the device management in XCode (iOS only)
Try this :
Close visual studio if open.
Open App Data and then go to
(a) Local\Xamarin
(B) Local\Xamarin\Xamarin.Android
Empty these folders.
Open your project and then try to build your application.
Not a proper solution, but I uninstalled and reinstalled Visual Studio. This seems to have fixed the problem, but I've still no idea why it stopped working in the first place.
this is so annoying.
Yesterday, everything worked fine. I commited my work on my app and went to bed.
Today- nothing works.
I try to debug my program, the app installs on my phone and works but the debugging stops only with: Unable to start program "The system cannot find the file specified".
No matter how ofter I rebuild, set my project as start project, change the target api, or what not. I even updated everything on my computer but it is hopeless.
Please, help me :(
This looks like a promising solution for this issue but somehow it didnt work for me, so I tried to repair my Visual Studio 17 and it worked.
For repairing visual studio you have to download visual studio installer from official microsoft website
If VS is already installed in your machine you'll get a screen with options :- Update, Launch and more.
select more and click repair.
You have to wait until VS finishes repairing. Hope you'll get rid of this annoying issue.
I had a similar issue, and solved it like this:
As Luminous_Dev figured out here:
forums.xamarin.com/discussion/123640/xamlctask-error-on-new-cross-plat-solution
make sure Mono Debugging for Visual Studio is enabled.
Tools > Extensions and Updates> Mono Debugging for Visual Studio
Source: https://forums.xamarin.com/discussion/123611/unable-to-start-debugging-the-system-cannot-find-the-file-specified
make sure Mono Debugging for Visual Studio is enabled.
Tools > Extensions and Updates> Mono Debugging for Visual Studio
When trying to run the app on the device, I'm facing the following issue:
I the Event Log, there is the same message:
Where can I find more info about the error?
Might work if you Clean the project or rebuild the project and if you launching in emulator uninstall from the emulator or from mobile.
UPDATE:
i think there will be no more information about the error...
It's our common mistakes.
As per my knowledge about this issue there can be a few reasons for that:
First is that your app is already installed with the same package
name but with different certificate, To resolve this check if your
phone has that app already installed then uninstall it and try to
install new one.
The second reason can be that you are trying to install the
application that has minimum SDK version higher than the Android
version of device. To solve this make sure that the minimum SDK
version defined in your project's "build.gradle" is lower than the
Android version of your device.
Turning off the Instant run removed error for Android Studio 2.3.
sometimes project location contained the special character.
Example: E:\Android_Projects\T&PUIET,KUK\app\build\outputs\apk\app-debug.apk
close android studio > rename folder containing the special character(here T&PUIET,KUK ) > restart android studio.
Hope it will help!
I have tried literally everything to try and rectify this error when trying to deploy an app to an actual android device for debugging but have been unable to solve the matter. Everytime I try to launch I get a failed [INSTALL_FAILED_DEXOPT] error and when checking the logcat it is always because there is no classes.dex in my debug apk.
If I run gradlew.bat clean assembleDebug, there is no difference in the apk size so I'm assuming there is a build error in android studio. I am using android studio beta 0.86 and have tried it on 0.89 with the same result. I have tried build tools for 19.1 to 21 with no result. I have also tried different devices and created a new project (that has never been installed on my devices) and android studio seems to think it needs to be uninstalled first when attempting to deploy.
I have tried switching my device to ART, uninstalling and reinstalling android studio, redownloading the sdk and restarting my computer. NOTHING and I mean NOTHING has worked. I think the problem started after I downloaded the lollipop apis but am not sure. I have tried uninstalling all apps with my package signature on my device but NOTHING works! Not even Project -> Clean Project -> Rebuild
This is extremely frustrating as I cannot debug my apps anymore :/ has anyone had any experience with this error or ways to rectify it?
So turns out that the issue was mismatching sdks between Android Studio and the Project. The project was using an old sdk and once I made them the same, I cleaned and rebuilt the project and everything was good to go.
UPDATE:
I ran into the problem again after I tried to update my SDK and its tools. Turns out that when you try to do this, the SDK locks the tools folder and then you get an error saying some file couldn't be overridden. When this happened to me, all the build tools were deleted so there were errors in the .dex file created when debuggin my app.
We are using android 2.2 (really old i know) and couldn't find a fix for this error. Eventually we found this bug https://android-review.googlesource.com/#/c/30900/. The only solution for us was to remove some libraries...
I kept having the same problem - manually building worked fine, but Android Studio would not build a proper APK.
The problem was that I started the project on Android Studio and Android Gradle plugin version 2.0-beta2. After updating the Gradle plugin to 2.0-beta6 through a simple build.gradle change, the builds stopped working.
Turns out that, although I installed a beta version of Android Studio, the update checker only checked the stable channel. After setting the updater to check the canary channel as well, I was able to upgrade Android Studio to version 2.0-beta6 and builds continued to work normally.
You can change the update preference in Android Studio settings under Appearance and Behavior -> System Settings -> Updates.
I encountered this error when storage of the device is full. Try to open some space.
Try run these commands
adb reconnect
adb reconnect device