I'm transitioning over from Eclipse to Android Studio and I find that I'm still confused about the different components of Android Studio regarding detecting errors. I have a project with about 20 Java files and 30 XML files. I recently ran a clean and build and got
Gradle build finished with 5 error(s) in 13s 397 ms
Two XML files were indicated and in both of them there was whitespace in front of the first element with an error saying ...
Xml declaration should precede all document content
So I fixed those and ran the build again with no errors.
I then ran Lint and found 8 more XML files with errors (NB, errors, not warning) saying "Element selector doesn't have required attribute:layout_height ". This error was apparently due to these files being in a layout folder instead of a drawable folder, although why that didn't cause problems in Eclipse is unclear.
My Questions:
Why does Gradle Build only detect some errors, but other have
to be found via lint?
What categories of errors will be found via Gradle Build?
How hard is it to add something to the Gradle Build script to find
all errors?
Edit: actually this is also true for regular Java files - I'll get "0 errors" in the Gradle build and then I'll step into a source file in the debugger and see 4 errors from Lint.
Why does Gradle Build only detect some errors, but other have to be
found via lint?
Lint errors are not compile errors, but code issues, and by default AndroidStudio will not check those. (Same goes for standard javac).
What categories of errors will be found via Gradle Build?
Gradle will detect all compile time errors, annotation processing, packaging errors, dex, signing, incorectly defined xml, incorrect file naming, etc.
How hard is it to add something to the Gradle Build script to find all errors?
Surprisingly easy in fact, source
To enable lint checks when compiling add in your application level build.gradle
android {
lintOptions {
// set to true to turn off analysis progress reporting by lint
quiet false
// if true, stop the gradle build if errors are found
abortOnError true
// if true, only report errors
ignoreWarnings false
}
...
}
If this will not work for U, add lint after each make, to do this you can follow this answer
I will add that this config will detect all enabled inspections with severity warning and error under:
File > Other Settings > Default Settings > Editor > Inspections
Android Studio will run code inspections checks live so all lint warnigns / errors are displayed in code while editing, lint errors are marked with red underscore, and warnings by marking code fragment with yellow background. Even if lint errors are marked the same as compile time errors they will not stop build by default.
I am trying to get data binding set up in my Android project, and I am getting an error whenever I try to build. The top of the stack trace is as follows:
java.lang.RuntimeException: failure, see logs for details. Generated class list does not exist C:\git\android-lm\androidCore\build\intermediates\data-binding-info\debug\\_generated .txt
at android.databinding.tool.util.L.printMessage(L.java:100)
at android.databinding.tool.util.L.e(L.java:87)
at android.databinding.tool.util.Preconditions.check(Preconditions.java:25)
at android.databinding.tool.DataBindingBuilder.readGeneratedClasses(DataBindingBuilder.java:130)
at android.databinding.tool.DataBindingBuilder.getJarExcludeList(DataBindingBuilder.java:118)
at com.android.build.gradle.internal.LibraryTaskManager$16.getExcludeList(LibraryTaskManager.java:550)
at com.android.build.gradle.internal.tasks.LibraryJarTransform.transform(LibraryJarTransform.java:154)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:151)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:148)
at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:55)
at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:47)
at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:147)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(A nnotationProcessingTaskFactory.java:243)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(Annota tionProcessingTaskFactory.java:219)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(Ann otationProcessingTaskFactory.java:230)
Environment:
Windows 8.1
Android Studio 1.4.1 (also tried in 1.3)
Gradle plugin for Android 1.5.0-beta1
Gradle 2.4
Build tools 23.0.2
Target SDK version 23, min version 21 (also tried targeting 22)
Android Library project depending on a variety of java and other android libraries
Dagger, dbFlow with apt code generation.
I have removed all code from my project that actually uses types from the data binding libraries - just the act of enabling data binding in my build.gradle causes this error. I have tried clean and rebuild, clearing my .gradle folder, clearing all .\build folders, restarting android studio but to no avail. The error occurs both from the command line and from within AS.
Any help greatly appreciated.
Most likely, you have this block:
dataBinding {
enabled = true
}
in a module's build.gradle when there are nothing in that module that triggers databinding.
Today I have updated my Android Studio and I keep getting this error no matter what I do. I imported a project from github everything was running smoothly until I updated now I keep getting this error:
Error:(31, 0) Gradle DSL method not found: 'jniDebugBuild()'
Possible causes:The project 'my_application' may be using a version of Gradle that does not contain the method.
Open Gradle wrapper fileThe build file may be missing a Gradle plugin.
Apply Gradle plugin
Can anyone help out?
The name of this property has changed in v0.14.0 and later of the Android Gradle plugin, so build files created for earlier versions need to be updated. Look through all the build.gradle files in the project, and when you see jniDebugBuild, change it to jniDebuggable.
You may run into other things that need to be renamed; the list of remappings is in the release notes at http://tools.android.com/tech-docs/new-build-system.
I get this error when trying to build my project after changing laptop and updating to Android Studio version 0.8.2.
FAILURE: Build failed with an exception.
What went wrong:
Task '' not found in root project 'MyProject'.
Try:
Run gradle tasks to get a list of available tasks. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Here are my Gradle files:
Top Level settings.gradle
include ':MyProject'
build.gradle in MyProject:
apply plugin: 'com.android.application'
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:0.12.+"
}
}
repositories {
mavenCentral()
}
android {
compileSdkVersion 20
buildToolsVersion "20"
defaultConfig {
minSdkVersion 14
targetSdkVersion 20
}
}
dependencies {
compile 'de.timroes.android:EnhancedListView:0.3.0#aar'
compile 'com.nineoldandroids:library:2.4.0'
}
Top level build.gradle is empty
Though late in answering, this is a hard one to Google (the single quotes) and it’s not clear what’s happening. I don't have the reputation yet to comment or ask for scope (or post 3 links), so this answer may be a little tedious.
To answer fast, you may have multiple Gradle plugins in your project.
Synchronize Gradle Wrapper and Plugins
My issue seemed to start with a corrupted IML file. Android Studio (between closing and reopening a project) began complaining an IML was gone (it wasn’t) and a module should be deleted, which I declined. It persisted, I upgraded to AS 0.8.7 (canary channel) and got stuck on the OP issue (Task '' not found in root project). This completely blocked builds so I had to dig in to Gradle.
My repair steps on OSX (please adjust for Windows):
Upgrade Android Studio to 0.8.7
Preferences | Updates | Switch "Beta Channel" to "Canary Channel", then do a Check Now.
You might be able to skip this.
Checked the Gradle wrapper (currently 1.12.2; don’t try to use 2.0 at this time).
Assuming you don’t need a particular version, use the latest supported distribution
$ vi ~/project/gradle-wrapper.properties ... distributionUrl=http\://services.gradle.org/distributions/gradle-1.12-all.zip
This can be set in Android Studio at Preferences | Gradle (but 0.8.7 was giving me ‘invalid location’ errors).
The 'wrapper' is just a copy of Gradle for each Android Studio project. It allows you to have Gradle 2 in your OS, and different versions in your projects. The Android Developer docs explain that here.
Then adjust your build.gradle files for the plugin. The Gradle plugin version must be compatible with the distribution/wrapper version, for the whole project. As the Tools documentation (tools.android.com/tech-docs/new-build-system/user-guide#TOC-Requirements) is slightly out of date, you can set the plugin version too low (like 0.8.0) and Android Studio will throw an error with the acceptable range for the wrapper.
Example, in build.gradle, you have this plugin:
dependencies {
classpath "com.android.tools.build:gradle:0.12.+"
}
You can try switching it to the exact version, like this:
dependencies {
classpath "com.android.tools.build:gradle:0.12.2"
}
and (after recording what version you’re changing from in each case) verifying that every build.gradle file in your project pulls in the same plugin version. Keeping the “+” should work (for 0.12.0, 0.12.1, 0.12.2, etc), but my build succeeded when I updated Google’s Volley library (originally gradle:0.8.+) and my main project (originally 0.12.+) to the fixed version: gradle:0.12.2.
Other checks
Ensure you don’t have two Android Application modules in the same Project
This may interact with the final solution (different Gradle versions, above), and cause
UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define (various classes)
To check, Build | Make Project should not pop up a window asking what application you want to make.
Invalidate your caches
File | Invalidate Caches / Restart (stackoverflow.com/a/19223269/513413)
If step 2 doesn't work, delete ~/.gradle/ (www.wuttech.com/index.php/tag/groovy-lang-closure/)
Quit Android Studio
$ rm -rf ~/.gradle/
Start Android Studio, then sync:
Tools | Android | Sync Project with Gradle Files
Repeat this entire sequence (quit...sync) a few times before giving up.
Clean the project
Build | Clean Project
Project structure mismatch; see https://stackoverflow.com/a/64962359/8740349 for details.
If You See This...
In my recent builds, I kept seeing horrible fails (pages of exceptions) but within seconds the messages would clear, build succeeded and the app deployed. Since I could never explain it and the app worked, I never noticed that I had two Gradle plugins in my project. So I think the Gradle plugins fought each other; one crashed, the other lost its state and reported the error.
If you have time, the 1-hour video "A Gentle Introduction to Gradle" (www.youtube.com/watch?v=OFUEb7pLLXw) really helped me approach the Gradle build files, tasks, build decisions, etc.
Disclaimer
I'm learning this entire stack, on a foreign OS, after working a different career...all at the same time and under pressure. In the last few months I have hit every wall I think Android has; I've been here quite often and this is my first post. I thought this was a hard fix, so I sincerely apologize if the quality of my answer reflects the difficulty I had in getting to it.
Download system image(of targeted android level of your project) from sdk manager for the project you have imported.
This error comes when you do not have target sdk of your android project installed in sdk folder
for eg. Your imported project's target sdk level may be android-19 and on sdk folder->system-images you may have android-21 installed. so you have to download android-19 system image and other files from sdk manager or you can copy paste it if you have the system image.
Remove:
<facet type="android" name="Android">
<configuration />
</facet>
in your iml file. That works for me.
https://plus.google.com/+AlexRuiz/posts/49hP3V9GSGe
This happened to me recently when I close one Android Studio project and imported another Eclipse project. It seemed to be some bug in Android Studio where it preserves some gradle settings from previously open project and then get confused in the new project.
The solution was extremely simple: Close the project and shut down Android Studio completely, before re-opening it and then import/open the new project. Everything goes smoothly from then on.
Apparently this error has multiple causes. Here's what fixed it for me.
I was running the build command like this:
./gradlew :testapp: build
Running it without the space fixed the issue:
./gradlew :testapp:build
I got this error when switching from one Git branch to another, and then trying to run "Clean Project". I used ack to search for the Task name, and found it in a .iml file.
My solution was to regenerate the project's .iml file by clicking (in the main menu) Tools > Android > Sync Project with Gradle Files. (Thanks to this answer.)
In my case, setting the 'Gradle version' same as the 'Android Plugin version' under File->Project Structure->Project fixed the issue for me.
Simple fix for me was
Build > Clean project
Restart Android Studio
Yet another solution to the same problem:
This happened to me every time I imported an eclipse project into studio using the wizard (studio version 1.3.2).
What I found, quite by chance, was that quitting out of Android studio and then restarting studio again made the problem go away.
Frustrating, but hope this helps someone...
Sometimes, if you have opened two windows of Android Studio, and when you try to compile, this issue might happen. For me, when I was compiling a backed Google Cloud Endpoint module which was not embedded in a project, rather shared among different Android Studio projects, and when there is more than once instance open, this error use to spring up for me. But as soon as you close other windows, everything will be fine. Sometimes, you might have to restart Android Studio altogether.
I got this problem because it could not find the Android SDK path. I was missing a local.properties file with it or an ANDROID_HOME environment variable with it.
Make sure you have the latest values in your gradle files. As of this writing:
buildToolsVersion "21.1.2"
dependencies {
classpath 'com.android.tools.build:gradle:1.1.0'
}
Open Command Prompt
then go your project folder thru Command prompt
Type gradlew build and run
Apparently this issue caused by Android Studio on the various situation but the reason is build error When importing an existing project into android studio. In my case, I've imported my exist project where I was supposed to install few build tools then finally build configuration was done with error. In this case, just do the following things
Close the current project
File>New>Import Project (Don't use the open recent project)
Note:
I'm sure this kind of error is not on source code when this happened on Import project.
Problem
I specifically got the "[module_name]:prepareDebugUnitTestDependencies" task not found error, every time I ran gradle build. This happened to me after updating my Android Studio to 3.0.0.
Investigation
I had previously added command-line options to the gradle-based compiler, which you can find under: File -> Settings -> Build, Execution, Deployment -> Compiler -> Command-line Options. Specifically, I had excluded a number of tasks, including the aforementioned task. While that worked fine on the previous stable version (2.3 at that time), it seems like this was the reason behind the build failure.
Solution
This is one of many possible solutions.
Make sure you have the correct command-line options specified in the settings under: File -> Settings -> Build, Execution, Deployment -> Compiler -> Command-line Options, and that none of them is causing this problem.
In my case, I removed the exclusion of this task (and other tasks that seemed related), left the unrelated tasks excluded, and it worked!
I had the same problem and the "Tasks" tab doesn't appear to me on the Gradle settings, neither doing the commands gradlew signinReport or something.
I fix it doing the following steps:
1.- Add android: exported = "true" in my main activity of the AndroidManifest (because that Activity has an intent-filter)
2.- Update in Build.gradle (app) the compileSdkVersion to 31
3.- Update in the same place the targetSdkVersion also to 31.
4.- Click on "Sync now".
And that works for me.
Farewell!
For this you may simply just goto: SETTINGS > EXPERIMENTAL > Then uncheck the option:
"Do not build Gradle Task List during Gradle sync", Click on "Apply" > "Ok" and then click on the "Sync Project with Gradle files" option from the right side of the menu bar.
Your issue should be resolved.
Set the path of the root folder and after run the below command
ex : cd C:\Users\maha\Documents\gradle\gs-gradle-master\initial
This is what I did
Remove .idea folder
$ mv .idea .idea.bak
Import the project again
I remove/Rename .gradle folder in c:\users\Myuser\.gradle and restart Android Studio and worked for me
In my case, I meet this problem that compile options in Android Studio is "stacktrace." Modify stacktrace to --stacktrace, the problem solved.
I have solved this problem You just need to Create file in Android Folder
Go android folder
Create file local.properties
then just add this code in local.properties file:-
If you are using MacBook then sdk.dir=/Users/USERNAME/Library/android/sdk
if you are using Windows then sdk.dir=C:\Users\USERNAME\AppData\Local\Android\sdk
if you are using Linux then sdk.dir = /home/USERNAME/Android/sdk
if you want to know what is your system USERNAME then just use command for Mac whoami
and then just rerun command react-native run-android
Thanks :)
Am on Mac so answer is as per like that.
Go to Android Studio(From Menu Bar) -> Preferences -> Build, Execution, Deployment -> Compiler . Then look for Command-Line Options , there make sure nothing typed in its Text Field. That should be empty. Then rebulid project and thats it.