存在模拟器时 Flutter 应用程序未运行

Question

The emulators are there but when I launch the app it doesn't work, please help:)

I have tried everything.

Cal, Flutter newbie.

I have followed the installation guidelines and tried fixes from other stack flow answers i am running windows 8.1 singular user. i have tried from command prompt and in the android terminal

<***C:\Users\Callum\first_app> Flutter emulators

2 available emulators:

Pixel_2_API_27 • pixel_2 • Google • Pixel 2 API 27

Pixel_2_API_28 • pixel_2 • Google • Pixel 2 API 28

To run an emulator, run 'flutter emulators --launch '.

To create a new emulator, run 'flutter emulators --create [--name xyz]'.

You can find more information on managing emulators at the links below:

https://developer.android.com/studio/run/managing-avds

https://developer.android.com/studio/command-line/avdmanager

C:\Users\Callum\first_app> Flutter emulators --launch Pixel_2_API_28

//emulator launches

C:\Users\Callum\first_app> Flutter run

No connected devices.

C:\Users\Callum\first_app>***>

I want the flutter app to run

UPDATE

C:\Users\Callum\first_app> flutter doctor -v

[√] Flutter (Channel stable, v1.2.1, on Microsoft Windows [Version 6.3.9600], locale en-US)

• Flutter version 1.2.1 at C:\src\flutter\flutter

 • Framework revision 8661d8aecd (3 months ago), 2019-02-14 19:19:53 -0800 • Engine revision 3757390fa4 • Dart version 2.1.2 (build 2.1.2-dev.0.0 0a7dcf17eb)

[√] Android toolchain - develop for Android devices (Android SDK version

28.0.3)

• Android SDK at C:\Users\Callum\AppData\Local\Android\sdk

• Android NDK location not configured (optional; useful for native

profiling support)

• Platform android-28, build-tools 28.0.3

• Java binary at: C:\src\Andriod studio\jre\bin\java

• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-

b01)

• All Android licenses accepted.

[√] Android Studio (version 3.4)

• Android Studio at C:\src\Andriod studio

• Flutter plugin version 35.0.1

• Dart plugin version 183.6270

• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-

b01)

[!] Connected device

! No devices available

. Doctor found issues in 1 category.

but there are emulators available. Could the problem be the environment variables i have set?;

ANDRIOD_HOME- Value: C:\Users\Callum\AppData\Local\Android\Sdk

Path- Value: C:\src\flutter\flutter\bin;%ANDRIOD_HOME%\tools;%ANDRIOD_HOME%\platform-tools

Update 2

I have installed vscode. the bottom right says no device, i clicked on it and chose a device(the devices I created in andriod studio were here). I got the following error "Failed to launch emulator: Error: Emulator didn't connected within 60 seconds"

Update 3

I tried to run ABD.exe from command prompt, i got the following error: "the program cannot start beacuse api-ms-crt-locale-l1-1-0.dll is missing from your computer. try reinstalling the program to fix this problem". I then downloaded the missing dll and put it in the platform-tools folder.

I also installed C++ developer tools from the windows website as that contained the dll that i was looking for.

I now get a 'the application was unable to start correctly (0xc000007b) click ok to close application.

After all this, if i remove the dll from the platform tools folder, i still get the error "the program cannot start beacuse api-ms-crt-locale-l1-1-0.dll is missing from your computer. try reinstalling the program to fix this problem"

Answer 1

I have the same issue, but in my case, the Emulator was already running successfully via Android Studio, so it was enough for me to just do the following steps:

1. Run this command > "Flutter emulators"
2. Select the relevant emulator and run > "flutter emulators --launch Pixel_2_API_28"
3. Within your app folder path, run > "flutter run"

After the last command, you would get something like this message:

Using hardware rendering with device AOSP on IA Emulator. If you notice graphics artifacts, consider enabling software rendering with "--enable-software rendering".

Launching lib\main.dart on AOSP on IA Emulator in debug mode...

Running Gradle task 'assembleDebug'...

Running Gradle task 'assembleDebug'... Done

Answer 2

Press Ctrl + Shift + P and click Launch Emulator