I am facing the following issue while selecting the device for emulator. It shows "nothing here" in devices marked with green and "not applicable for main.dart" for the one marked with red.
Image- img
I came across a warning regarding white spaces in android sdk path when i went to tools>sdk manager>android sdkHence i shifted the entire android folder to C:\Android\sdk and i got rid of that warning but now on running the command 'flutter doctor', my android sdk cannot be located. This could be because i changed the path of sdk but i also changed the environment variable.
Images as follows-
flutter doctor-flutter doctor
Path environment variable in SYSTEM variable-environment variable
SDK manager-android sdk
What else am i missing here?
You might have missed setting the Project SDK.
Go to File > Project Structure
Under Project Settings > Project, make sure you've selected the latest Project SDK, Apply Changes and restart Android Studio, then you will be able to see and open from the list of installed emulators.
Related
I'm new to programming so please be genetle. I'm handy with computers though and I've been sitting on this problem for a few weeks while learning flutter and dart
When I create a new flutter application in android studio, it does not create a main.dart file - the libs foder is empty, and I also see no IOS folder. In fact, what I see looks VERY different from any tutorials I've seen !!
What I do see is a bunh of .xml files, including one called activity main which runs a main activity function which almost seems like it is there instead of the main.dart file I'm looking for.
I have run flutter doctor, apparently everything is good.I have the dart and futter plugins installed. It is not a case of selecting "project" from the drop down menu instead of "Android" which is a common answer online. Not sure what I'm missing !!
Any help would be really really appreciated as I'm learning to code to open my next business and I am struggling to get over the first hurdle.... at leasr I am proficient wit dartpad now though :P
EDIT:
When I click on 'file > new > new flutter project', I don't see an option for "flutter application". This is what I see...
enter image description here
If I create a flutter project at this point, this is what Android Studio looks like for me...
enter image description here
If you have properly created a Flutter project in Android studio, main.dart file should be very easy to locate. It is located in project_name -> lib -> main.dart, as follows:
I am sharing steps to create flutter project in android studio :
Step 1: Open the IDE and select Start a new Flutter project.
Step 2: Select the Flutter Application as the project type. Then click Next.
Step 3: Verify the Flutter SDK path specifies the SDK’s location (select Install SDK… if the text field is blank).
Step 4: Enter a project name (for example, myapp). Then click Next.
Step 5: Click Finish.
Step 6: Wait for Android Studio to install the SDK and create the project.
Note: When creating a new Flutter app, some Flutter IDE plugins ask for a company domain name in reverse order, something like com.example. The company domain name and project name are used together as the package name for Android (the Bundle ID for iOS) when the app is released. If you think that the app might be released, it’s better to specify the package name now. The package name can’t be changed once the app is released, so make the name unique.
The above steps create a Flutter project directory called flutter_app that contains a simple demo app that uses Material Components.
Running the application:
Follow the below steps to run the flutter application that was structured above:
Step 1: Locate the main Android Studio toolbar:
Step 2: In the target selector, select an Android device for running the app. If none are listed as available, select Tools> Android > AVD Manager and create one there. For details, see Managing AVDs.
Step 3: Click the run icon in the toolbar, or invoke the menu item Run > Run.
After the app build completes, you’ll see the starter app on your device.
as per screen shot shared by you click on flutter , hopefully this will create a new flutter project.
I get this error when i run a project on VS code.
Could not read script 'C:\flutter\packages\flutter_tools\gradle\app_plugin_loader.gradle' as it does not exist.
How can i solve it?
Try flutter pub cache repair this should re-download all the packages and fix any package issues.
try deleting the android folder
and run flutter create . from the same level as the android folder
For android studio Problem is because Android Studio doesn't know where Flutter is installed in your machine. Same applies to visual studio flutter... You need to explicitly specify this in local.properties file like I've done below. (If you have already specified it, make sure you go to that location on your PC to be sure that the location was 100% correct and its all there):
(Values used in code below is Just for example.. See my picture for how it looks on an actual machine)
sdk.dir=C:\Users\location of where your android sdk is
flutter.versionName=1.2.0 flutter.sdk=C:\Users\location of where
your flutter is
Picture example
I can't run all of my flutter apps, because in the console appears everytime this error message:
Downloading Gradle Wrapper... 1,2s
Launching lib\main.dart on SM G960F in debug mode...
Running Gradle task 'assembleDebug'...
Finished with error: Unable to locate gradlew script. Please check that C:\Users\...\android\gradlew.bat exists or that C:\Users\...\android can be read.
I try to fix this problem more than ten hours and don't find a solution.
I will advise you to check your pc properly for unwanted programs. Something is preventing your pc from running the Gradle. I had the same issue only to realize that antivirus was installed on my pc alongside a cd burner that I just installed. Check for any antivirus that might be preventing Gradle from running.
I also faced the same error initially. While creating a flutter application from scratch I just ran the default flutter application which is a counter app in a flutter. I faced the same issue at first. If you are in this same context as described earlier the following could be the solution
1.Java 8 is more suitable for the flutter/android development. The next versions of java have some exceptions. I used the Java 14 and stuck at this issue for some time
The next could be the JAVA_HOME path in your environment variables. If it is not provided the set the JAVA_HOME path.
Run flutter --doctor and check the requirements if satisfied like Android SDK is updated or not, upgrade flutter if required. In some cases having good Internet connection also plays a role in this issue some times.
These are the major points to be satisfied in order to get rid of this error. Mostly this could be the a solution or part of it.
The error suggests that something is preventing gradle to run properly on your machine. Check whether you have any unwanted programs or anti-virus on your machine running that might be preventing gradle to run. If so, remove or stop those programs / anti-virus and try again.
After that, delete the .gradle folder located here C:\Users\yourPcName\.gradle containing the unfinished file and try again . It will work now .
You can also manually download Gradle and map it in Android studio , Learn more with this article here .
Warning, the gradle versions change quickly, so make sure you manually
downloaded the exact version that flutter wanted to download and the
download failed. Download the gradle here and then replace it in the
gradle folder.
C:\Users\yourPcName\.gradle\wrapper\dists\gradle-x.x.x-all
If it still doesn't work,
Try to run flutter --doctor
From a console window that has the Flutter directory in the path (see above), run the following command to see if there are any platform dependencies you need to complete the setup:
C:\src\flutter> : flutter doctor
This command checks your environment and displays a report of the status of your Flutter installation. Check the output carefully for other software you might need to install or further tasks to perform (shown in bold text).
You can learn more here :
If flutter doctor itself doesn't work, then know that flutter is not installed on your machine (or you forgot to add it to the environment
variable).
I also faced this problem and I made something to run my app on android
tried to open anything on android files and android studio ask me if I want to open for editing android file in android studio then click on it and it will open android project then click run enter image description here
How do I get flutter doctor on my Windows 10 laptop to work, please?
I followed the guidelines here,
Used git to clone the flutter repository,
git clone -b alpha https://github.com/flutter/flutter.git,
Tried adding "C:\Users\<user>\flutter\bin" to my path in the Control Panel
and then in an Admin Powershell, tried executing flutter doctor.
At first, it just hung.
After googling for help, I tried deleting the contents of the
C:\Users\<user>\flutter\bin\cache folder and re-executing flutter doctor but to no avail.
Then, I tried deleting all of flutter and cloning again but flutter doctor just hung again but with, Updating flutter tool.
Tried a few different Googled PATH-adding ideas (that seems to be a complex and disputed area.)
Got a new message: Waiting for another flutter command to release the startuplock
The latest state is that flutter doctor still just hangs but without any message.
I suspect the problem lies in the new Path not being properly recognised (in the registers??)
Can anyone help please?
Well, the issue is not clear enough, but this might be solution, if your flutter doctor is stuck, it might be due to Background Intelligent Transfer Service is disabled, in order to check for yourself, do the following:
Click on the start menu, and then start typing services.
Launch the services and look for Background Intelligent Transfer Service and make sure it is running.
At this stage I believe you will find it disabled for some reason, just right click on it and go to properties and start the service, also change the startup type to automatic.
I can not think of other reasons that might prevent flutter doctor to run for the first time on a Windows machine other than that honestly.
I know this question is a little bit old. Here is a solution that worked for me. Run the Command Prompt as an admin solved the issue for me.
For Windows user check to see if the unzipped flutter folder is read only. (i.e right click the folder then properties then in the attributes section untick the readonly property then apply this change to the folder along with the sub-folders then ok and thats it. Worked for me.
Some errors I got and how I fixed it:
(ERROR 1):
[flutter] flutter doctor -v 'crumb' is not recognized as an internal or external command, operable program or batch file.
Error: Unable to find git in your PATH. exit code 1
(Fix) - Go to flutter installation folder and inside flutter/bin edit the flutter.bat file using a text editor and remove the line (20) that says:
IF EXIST "%mingit_path%" SET PATH=%PATH%;%mingit_path%
The code should look like this on those lines:
REM If available, add location of bundled mingit to PATH
SET mingit_path=%FLUTTER_ROOT%\bin\mingit\cmd
Save and Run flutter doctor and everything should work fine.
(ERROR 2):
flutter doctor takes too long
(Fix) - I downloaded the previous version of the sdk it worked like a charm.
(ERROR 3):
Android sdkmanager not found. Update to the latest Android SDK and ensure that the cmdline-tools are installed to resolve this.
(Fix):
Open Android Studio
Tools Menu, SDK Manager
In the window that comes up there are inner panels, choose SDK Tools panel
Tick Android SDK Command-line Tools
Choose Apply button near the bottom of the window
This worked.
(ERROR 4):
The term 'flutter' is not recognized as the name of a cmdlet, function, script file, or operable program.
(Fix) - Put the correct part in the env variables. I had put D:\flutter instead of D:\flutter\bin. That worked.
I got a solution that worked for me
initially i had downloaded the 2.2.5 SDK which gave the forever run error so i went back and downloaded the previous version ie 2.2.2 it worked like a charm
The Flutter SDK is installed in a protected folder and may not function correctly. Please move the SDK to a location that is user-writable without Administration permissions and restart.
I'm trying to build a Flex project in Eclipse on a client's machine, I didn't set it up. When I look in the project's "Flex Build Path" it shows the proper Flex SDK, expanding it shows the normal list of swc's with no errors reported. In project's "Flex Compiler", the same version is selected as what is in the library path list. In Preferences/Flex/Installed Flex SDKs, the same Flex version is listed there without any errors. For a sanity check, I set the path to somewhere that the SDK was not, and it does give an error.
When I try to build the project, it gives the error:
Flex SDK location "/path/to/existing/SDK" does not exist
Any ideas on what I need to check / adjust / reinstall? I've never seen this before, normally you set the path to be correct in preferences, and the compilation is happy.
I ended up reinstalling the Flex SDK, and that corrected the issue.
Everything appeared to be fine with the SDK, project, and run-as setup, I compared it setting-for-setting and file-for-file with my computer (which worked fine, but isn't on the client's network, so no access to the web services), and everything was identical. After the SDK re-install, everything appears fine.
So, I still have no idea what was in the weeds, which is annoying.