This is what worked for me: (in your project's build.gradle)
allprojects {
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
}
}
Question
I tried to add the following to the root build.gradle
file:
subprojects {
gradle.projectsEvaluated {
tasks.withType(Compile) {
options.compilerArgs << "-Xlint:unchecked -Xlint:deprecation"
}
}
}
But I'm getting this:
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':Libraries:ActionBarSherlock:compileRelease'.
> invalid flag: -Xlint:unchecked -Xlint:deprecation
What am I doing wrong?
Solution
This is what worked for me: (in your project's build.gradle)
allprojects {
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
}
}
OTHER TIPS
Disclaimer: Even though this answer has more than 10 upvotes, it does not address the problem in the context of an Android project. However, Google finds this question in the context of non-Android projects. Thus, I keep this answer for those folks.
According to JavaCompile, the following seems to be solution:
compileJava {
options.encoding = 'UTF-8'
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
If you want it to have for the test cases, use compileTestJava
compileTestJava {
options.encoding = 'UTF-8'
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
For everyone using gradle.kts
use the following to match up with the simple build.gradle
file
build.gradle.kts
afterEvaluate {
tasks.withType(JavaCompile::class) {
options.compilerArgs.add("-Xlint:unchecked")
options.compilerArgs.add("-Xlint:deprecation")
}
}
build.gradle
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
}
Put this in your build.gradle file (root directory):
allprojects { // Projects
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.encoding = 'UTF-8'
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
}
}
I had a different compilation argument to set. The following works for me.
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs << "-XDignore.symbol.file"
options.bootClasspath = "$System.env.JAVA_HOME/jre/lib/rt.jar"
}
}
You have to set the boot classpath for JDK 1.8 and above for things like Unsafe and sun.swing.* classes. Fix the source code especially for the latter, because Jigsaw Java 9, the up and coming modularity implementation for the JRE, will finally make these methods inaccessible(!). Consider yourself warned.
For deprecation, you can now use this in gradle kotlin script, which is better than modifying compilerArgs
because it's type-safe:
tasks.withType<JavaCompile> {
options.isDeprecation = true
}
In higher version of Gradle I'd recommend using the new API:
tasks.withType<JavaCompile>().configureEach {
options.isDeprecation = true
}
I'm not sure the problem was about using the Gradle subprojects
configuration parameter, but the syntax you used:
options.compilerArgs << "-Xlint:unchecked -Xlint:deprecation"
This worked for me:
subprojects {
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs += [
'-Xlint:unchecked', // Shows information about unchecked or unsafe operations.
'-Xlint:deprecation', // Shows information about deprecated members.
]
}
}
}
or
subprojects {
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
}
}
If you only want to add one option (you would normally add more), inside the task JavaCompile
you just need to add:
options.compilerArgs << "-Xlint:unchecked"
private class HelloWebViewClient extends WebViewClient{
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
}
@Override
public boolean shouldOverrideUrlLoading(WebView webView, String url)
{
webView.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
}
}
warning: [deprecation] shouldOverrideUrlLoading(WebView,String) in WebViewClient has been deprecated public boolean shouldOverrideUrlLoading(WebView webView, String url) ^