Android Studio not showing Logcat with Flutter

I'm using Android Studio for Flutter App Development. Everything seems to be working fine just that the Android Studio does not show the "logs" in Logcat. In the Logcat section, it says "Please Configure Android SDK". Which is already configured. And in the Logcat section says "No Connected Devices." in the drop-down menu. When it has recognized my Android Phone and is showing it just under the Menu bar.

Is there a fix for it? Is there something I am missing?

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最佳答案

Update April 2020: Cuong's answer works better with Android Studio 3.6+

Previous answer:

Flutter use Run tab to display logs in Android Studio. Switch from Logcat to Run and then you will see logs.

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Flutter has not logcat flutter show error in the console inside Run tab.IF you want to see error and crash report click on run tab.

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I guess it's an ADB issue. You can restart AS (or maybe even your Computer) or what i usually do is open the terminal an then: adb kill-server && adb start-server (I think the second part adb start-server is not necessary because it seems that AS handles it automatically) - anyways this is how LogCat and Android (and Flutter) work for me every time.

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Switch to the “Run” tab to see the logs and if you want to insert logs (like Log.d() in android), you can use print() function and whatever string you pass into it will be printed into the “Run” window.

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Go to Setting/Preferences -> Languages & Framework -> Flutter -> Check or uncheck Replace the Run and Debug console with an experimental Flutter Loggin view

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When I first came to Flutter from an Android background, I didn't know where to find the log statements. I didn't care so much about all of the system messages. I just wanted to see log messages from my app during development. This answer is for people like that, not for people who specifically need LogCat itself.

In Flutter apps you can log text using the print() statement. 

print('hello');

As others have said, you can use the Run tab in Android Studio to view these logged comments.

enter image description here

Here is the code for main.dart:

import 'package:flutter/material.dart';


void main() {
runApp(MaterialApp(
home: Center(
child: RaisedButton(
child: Text('Button'),
onPressed: () {
print('hello'); //               <-- logging
},
),
),
));
}
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Just open another NATIVE project for Android Studio in other window and the logcat will work, do it while Flutter project is open. That was the solution for me

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Just use command 'flutter logs', then you can see all logs which are printed by 'print' or 'debugPrint' function.

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Open Project Stucture -> Modules -> new android module from exists source.

Logcat & Device File Explorer will be visible.

for Android Studio 3.6: File -> New -> New Module -> Android Library

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When i face this problem I just go to File and open my existing native android project and then close it. This solution also works when abd Wifi pludings does show warning like => adb not found.

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when you open flutter project, IDE prompts you to configure android project. Just click on the recommendation and it will start showing logcat window.

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Try the following:

  • Event Log (a tab at the bottom right) enter image description here

  • scroll to Android framework is detected

enter image description here

The Logcat tab should appear now. Moreover, the Device File Explorer tab should show up on the right panel.

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I found a solution worked for me:

for MacOS: Go to: /Users/userName/Library/Preferences/AndroidStudio3.4/options Find "runner.layout.xml" Change the name of this file for ex: runner01.layout.xml Restart Android studio

for Windows: 1- Focus "Run" tab (click on tab header, not on its body) 2- Ctrl+Shift+A, find and click "Restore Layout"

References: https://github.com/flutter/flutter/issues/25835 https://github.com/flutter/flutter-intellij/issues/3673#issuecomment-517356243

Hopefully, it helps.

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I had this issue: I have done the following steps to resolved it:

  • Click the event log on the bottom right of android studio enter image description here
  • Click on configure enter image description here
  • Click on Ok in the dialog box

enter image description here

  • Logcat will be available nowenter image description here
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You can enable verbose logging for flutter if you are looking for AppId or something of that sort.

enter image description here

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In my case, I also had an error in the Device File Explorer: Error initializing ADB: Android Debug Bridge no found. I fixed the problem following Error initializing ADB: Debug Bridge not found: I selected the latest Android API Platform as Project SDK in File/Project Structure.

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In case you accidentally refused to configure Android framework and now struggling to find the LogCat window. Then delete .idea, .dart_tool and .gradle folders in project root and android folder. Then Invalidate and restart. It will ask to configure detected Android framework. Click 'configure'.

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Just go to File => Project Structure => and in the “SDK project” choose “Android”

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  1. close project
  2. delete .dart_tool,.idea,build files
  3. start android studio,logcat will display
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I just solved this, the flutter project was missing an Android module. Go to 'File -> Project Structure -> Modules'. Click on the '+' sign at the top to add a module. Select Android.

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Run

adb logcat

and watch from terminal. Doc: https://developer.android.com/studio/command-line/logcat

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1.

Go to Menu and select 'Project Structure' -> 'Project'

enter image description here

2.

In 'Project Structure' Select Project SDK

enter image description here

And just now click on OK and Apply.

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Find a way around it (macOS).

Go to Project Structure -> Facets -> "+" -> Android -> Select Project.

Logcat should now be visible. Configure Android SDK if not done previously and you should be able to use Logcat.

Reference https://github.com/flutter/flutter-intellij/issues/2724

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In new versions of Android Studio, after deploying the app to device/emulator, in Run Tab you will see an option for flutter dev tools as shown in the image, it will open in browser (based on default chrome/edge) and there you can see logcat/logging

Android Studion artic for run tab

Flutter Dev Tools

Flutter Dev Tools in Google Chrome

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  1. Go to File > Project Structure Project or use cmd + ; or

  2. Then click on "Facets" and press + icon in the upper right corner and add Android from the list.

    enter image description here

Credit to @MrWeeMan

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Some times for some reasons like flutter clean or changing in files directory, android studio usually excludes some files from project modules. here is some simple steps to help you solve the problem:

go to File --> Project Structure --> Modules

There are 2 common scenarios.

  • Android studio might have completely removed your project from modules. For this you need to add it again using steps shown in the picture below.

Click on the plus icon and the add your project here. Then press Apply and lastly OK.

enter image description here

  • Android studio just excluded some of the files and folders from your flutter project. In the right panel you can see them in red. just remove them from exclude list and again Apply and OK.

enter image description here

NOTE: In both scenarios you need to stop the project and rerun it. or better close and reopen android studio


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