Dagger 2 swallows errors

Hi, i have an unexpected problem with my setup. Also to inform you, i heavily use the official android databinding in my project (in 10+ activities and 20+ fragments).

my app build.gradle is something like this:

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'

android {
    compileSdkVersion 23
    buildToolsVersion '23.0.2'

    dataBinding {
        enabled = true
    }

    dexOptions {
        incremental true
        javaMaxHeapSize "4g"
    }

    defaultConfig {
        applicationId "com.charbgr"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1"

        //Espresso
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

        //RenderScript
        renderscriptTargetApi 19
        renderscriptSupportModeEnabled true

        multiDexEnabled true
    }

    packagingOptions {

        //Espresso excludes
        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'
        exclude 'LICENSE.txt'
        //Espresso excludes

    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }

}



dependencies {

    ...

    compile 'com.google.dagger:dagger:2.0.2'
    apt 'com.google.dagger:dagger-compiler:2.0.2'
    provided 'org.glassfish:javax.annotation:10.0-b28'
}

the root build.gradle is this one:

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.0.0-alpha5'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

In my code, i make an enforced error(i know that i cannot create an object with the same method name in a module). The enforced error looks like this:

@Module
public class AndroidModule {

    @Provides
    public Foo providesFoo(String bar) {
        return new Foo(bar);
    }

    @Provides
    public Foo providesFoo(String bar, String unusedArgument) {
        return new Foo(bar);
    }
}

For some reason, when i build my project i get 100+ errors from databinding with this output: cannot find symbol class BR

and dagger doesn’t prints this error Cannot have more than one @Provides method with the same name in a single module

Seems that Dagger “swallows” this error or the databinding overrides some behaviour of the annotation processor tool(apt).

Do you know what’s going on?

[charbgr]

After couple of days of debugging, i found that javac outputs by default max 100 errors. So if anyone, come with this error just add to gradle to force javac to output over 100 errors.

gradle.projectsEvaluated {
    tasks.withType(JavaCompile) {
        options.compilerArgs << "-Xmaxerrs" << "500"
    }
}

so @ronshapiro you can close this issue.

[tasomaniac]

The mentioned fix actually didn’t work for me with Gradle 4.0. It does not find the JavaCompile tasks. Here what I did instead (in my main build.gradle)

allprojects {
  afterEvaluate {
     tasks.withType(JavaCompile.class) {
       options.compilerArgs << "-Xmaxerrs" << "500"
     }
   }
 }