I upgrade Android Studio 3.2 to 3.4 and encounter a problem.
Add a test.cpp source file to CMakelist and Sync project but it doesn't work. Android Studio prompt me:
This file is not part of the project. Please include it int the appropriate build file(build.gradle, CMakeList.txt or Android.mk etc) and sync the project
When I build the project. the cpp source works. and when I include jni.h. the jni.h has red alert. But compiles for no problem. The existing cpp files have no such problem. They include jni.h successfully and have no red alert.
Could you tell me what happens. Does Android Studio 3.4 have a bug?
Try to clean the IDE caches and project iml file, i.e. the .idea and .gradle and .iml under your project root dir.
Related
I have a strange problem that suddenly appeared in android studio. I created a new cpp file, and included it in Android.mk. Then I synced the project. However, android studio still complains that the file is not part of the project and that I need to sync, BUT the whole project builds successfully.
Likewise, if I remove one of the other older files from Android.mk that it did not complain about, and resyncs and then tries to build the project, as expected the build fails, but android studio does NOT complain that that file is not part of the project anymore.
So somehow, suddenly the android studio editor is not able to correctly identify which files have been synced and are part of the project, but during compilation everything works as expected.
Does anyone know how to fix this annoying problem? I have tried clean project, invalidate caches/restart as well as updating android studio without luck (AS version 3.4).
I used Build > Refresh Linked C++ Projects menu and it worked.
I had a similar problem. Like yourself, I have tried everything.
Invalidate and Restart: Doesn't work
Manual deleting folders: .gradle .idea .ndkbuild etc. doesn't work
Clean, Rebuild, Link C++ Files: Doesn't work
One thing that kind of helped me was: I changed the NDK version. I compiled, then got a compilation error (didn't matter because it was the wrong version of NDK anyway), then I reverted to the original NDK. This appeared to solve the problem, however, it got back again.
My solution was to reset Android Studio to factory settings. If you are on Linux, you can start by deleting these folders:
rm -rf ~/.android
rm -rf ~/.AndroidStudio3.4
Then you download and run your Android Studio and not import anything from anywhere.
I suspect the problem was caused by one of the plugins I've installed.
It may be a good idea to backup those two folders from time to time and reload them from there if necessary.
EDIT: It seems that my problem persisted after the above solution after adding more .cpp files. After seeing that, I searched where that popup came from. It follows that "This file is not part of project..." popup is pushed from ndk-build. (Class name: NewCppSourceNotificationProvider - StaleCppProjectNotificationPanel). What I tried, and what worked so far; I used Android Studio 3.5 Canary13 with NDK version r19c (Stable version). I hope this helps you.
Problem Environment
Android Studio 3.5 RC 2
gradle-4.10-all
com.android.tools.build:gradle:3.2.1
Solution
Update to:
- gradle-5.5.1-all
- com.android.tools.build:gradle:3.4.2
Steps
From the project root run (note this has to be done first):
./gradlew wrapper --gradle-version 5.5.1 --distribution-type all
In root build.gradle file:
buildscript {
//...
dependencies {
classpath("com.android.tools.build:gradle:3.4.2")
//...
}
}
I have similar problem, it could be the compatibility issue of gradle version and gradle plugin version, because my solution is replacing the old configuration
// build.gradle
classpath 'com.android.tools.build:gradle:3.2.1'
...
// gradle-wrapper.properties
distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
with the following new one by changing gradle version from 4.6 to 4.10.1.
// build.gradle
classpath 'com.android.tools.build:gradle:3.2.1'
...
// gradle-wrapper.properties
distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
After that, Android studio can index and track my new cpp files in project.
fix this by update my 'com.android.tools.build:gradle'
Had the same problem with Android Studio 4.0.1 and the latest gradle at this time (6.1.1?). The problem went away after I exited Android Studio and deleted .gradle and .idea folders in the project main directory, plus deleted .cxx and build directories in the affected module directory. I'm not sure which really helped, but most probably deleting .grade and/or .idea
I fixed with update 'com.android.tools.build:gradle' in the artic fox version 2020.3.1
For those struggling with this for me I made a small change to CMakeLists.txt (I altered the version required). This forced the CMake to regenerate, and all missing files were added. This is quicker than the other options listed here.
This applied to NDK 21, so YMMV!
Invalidate cache and restart and you should be good. However, make sure you checked the Clear file system cache and local history checkbox.
Android Studio displays in all java files in red : “cannot resolve symbol R” but the project compiles and runs.
I have tried every solution here:
Android Studio "cannot resolve symbol" but project compiles and works, but with no luck.
I tried to :
invalidate caches and restart android studio
delete .gradle and .idea folders
clean and rebuild the project
install a new version of android studio
mess up with gradle file then undo changes and sync project
One thing that I want to try, but I don't know how to achieve, is to reopen the project from scratch as I was opening it for the first time, but I don't know how to do this.
I also tried answers from here:
Android Studio says "cannot resolve symbol" but project compiles,
but again with no luck.
Android studio version = 3.2.1
dependency versions in gradle project file:
classpath 'com.android.tools.build:gradle:3.4.0-alpha01'
classpath 'com.google.gms:google-services:4.0.0'
For some reason that i do not understand ,
this combination of build versions made the issue :
grade version = 4.10.1
classpath 'com.android.tools.build:gradle:3.4.0-alpha01'
when i switched to these build versions :
grade version = 4.6
classpath 'com.android.tools.build:gradle:3.2.1'
The issue was solved !
File -> Close project
Open an existing Android Studio Project
Open you project
Hope it will work.
sometimes, R file is not generated because of package name on android manifest is not match with package module that you have.
Is any wrong syntax or spelling in your xml?
Check your layout or any xml file.
Android Studio seems to have a caching issue with R.java occasionally. I rarely have a problem with this, but when I do, I actually open R.java (double press shift and type "R.java") or navigate to R.java under "app/build/generated/source" directory, opening the file and checking if the relevant XML id has been created. If it has, it forces Android Studio to now recognise the id's that are not being resolved. It's quick to try, and doesn't require clean and rebuild.
From your programs menu, open android studio. instead of opening your project from the recent files, select to open a project from your computer and then locate the path to your project. When all else fails, sometimes this works.
Also, try commenting out the support libraries from your gradle implementation, sync your project, and after sync fails comment them back in and sync again. (not sure if that's what you tried already when you said you messed with the gradle file)
In my case,
I am using
- Android Studio version 3.3.1 at home
- Android Studio version 3.2.1 at office
When i pulled projects to my office computer that are firstly created at my home computer ,
Android Studio can not resolved R file but runs application with no error. Because projects gradle and Android Studio version are incompatible.
Only thing that you sholud do, change the gradle version in project level gradle file
classpath 'com.android.tools.build:gradle:3.3.1'
to
classpath 'com.android.tools.build:gradle:3.2.1'
I was facing same issue,
first thought the issue might because of some xml file or naming of drawable resources incorrectly. After analysing, this case wasn't applicable to me.
So
Updating Android studio from older version 3.2 to newer version 3.3.2 along with new build tool version from SDK manager resolved this issue
for me.
I've tried invalidate cache and Restart AS with clean rebuild all the options but didn't work for me.
It says cannot resolve symbol, but it can run.
In my case, I just reload the needed *.jar files to the libs folder.
File >> invalidate caches/restart
Rebuild Project
Sync
Run
Works for me!
It looks like the library did not load my "imports" properly the first time.
That's why the import methods cannot be seen in my main_activity.xml.
This happened to me when I was going back and forth between different SDK versions.
Apparently SDK manager copied all the source files but it didn't finish cleanly. As a result I could compile and run my project just fine but IDE didn't recognize the SDK and reported all java symbols unresolved.
None of the above and other solutions in SO didn't work for me, but just uninstalling/reinstalling the specific SDK version did a job.
If you renamed your package (inside java folder), make sure you change your Manifest package name to the same
The only thing that worked for me was,
replacing,
import package_name.R
with
import package_name.*
simply go to project settings : settings.gradel and change the rootProject.name to your current name
rootProject.name = "write the project name here"
I've decompiled an APK file, of which I already had the source code.
But the folder I get after compilation is different from "normal".
In the normal folder (I'm implementing on Android Studio) I have:
.grandle
.idea
app
build
grandle
.gitignore
build.grandle
grandle.properties
gradlew
gradlew.bat
local.properties
settigs.gradle
.iml
In the decompiling folder I have:
AppInventor
com
wildebeest
kawa
org
This if I try to load it directly with Android Studio does not work.
How do I get a downloadable folder from Android Studio?
You can't, because on decompiling an apk, you get only the source code, and not the gradle settings, dependencies etc.
You can't use decompiled source code into the Android Studio as it is not java code.
I have ligdx/robovm/gradle/android studio project with core, ios, android and desktop subprojects. I wanted to clone android subproject and create very similar one (I named it android-full). I've copy-pasted android directory and renamed it as well as stuff inside it's (build.gradle, AndroidManifest.xml). In settings.gradle I've added 'android-full' to the list. In build.gradle (root directory) I've copy-pasted project(":android") to project(":android-full"). When I'm trying to sync gradle I'm getting an exception:
Error:exception during working with external system:
Full stacktrace from logs here:
http://pastebin.com/T2XUWtYN
A guy from libgdx forums even created github repo with demo project for me (with 2 android subprojects ofc). Gradle works on it without any problem. Here it is: https://github.com/piotr-j/doubledroid
But when I've copy-pasted source code from core/src and android/android-full (without build.gradle) I've immediately got the same exception. I also compared all gradle files with diff checker and they're almost the same (structure is the same as well as version of gradle, I only have more libs).
I use latest android studio (1.4) and gradle 2.4.
I've tried restarting android studio, doing everything again from scratch, deleting .gradle directory, messing in .idea configs and still the same exception, which isn't very informative.
I don't understand how, but I fixed the problem. I just imported it in Eclipse (with gradle plugin). Project appeared without any problem. Then I realized there were fix small bugs in code, cleaned & builded everything again. Then project worked, I closed it and opened Android Studio again. Then it just worked! Some gradle vs android studio bug I guess.
I am unable to remove NDK support from my Android project. I have gone through all the workspace and project settings, including CDT builder, C/C++ build paths, etc. I have cleaned my workspace and relaunched Eclipse. However, my project will not build as Eclipse complains about this error:
Program "/home/eazyigz/adt-bundle-linux-x86/android-ndk-r8c/ndk-build" not found in PATH
I really don't know what to do, as I don't even have ndk-r8c downloaded, and it's an outdated version of ndk anyway! I am on Ubuntu Linux.
Anybody knows?
Well, I reinstalled Eclipse. Then I deleted my project and re-imported it into the workspace. Now I don't get that error anymore. Problem solved.
If you have a C/C++ aspect to your code which references the Android NDK plugin for Eclipse, you need to have the NDK location set in the NDK plugin preferences: