Dagger2 with J2Objc about j2objc-gradle

[brunobowden]

Just finished getting Guava integrated and working. Inject is now added.
Now going through the dagger 2 examples. Hopefully I'll get something up
and running tomorrow. Also thanks for sharing your own demo.

On Sun Feb 08 2015 at 8:37:17 PM Confile [email protected] wrote:

Did you make any progress on using Dagger2 with J2Objc?

I created a demo with made it work with GWT:
https://github.com/confile/GWT-Dagger2-Demo

—
Reply to this email directly or view it on GitHub
https://github.com/brunobowden/j2objc-gradle/issues/4.

[confile]

Just look at my example project it will save you a lot of time.

The only thing which is missing is adding the dagger2 jar to J2Objc. This must be done via classpath. I did not understood how to add multiple jars to the classpath using your gradle plugin.

If you did this I would be happy if you could post it to me.

Here you can see how to configure your build.gradle for dagger2.

Here is a simple dagger example you can copy and paste. Use it like this:

MyWidgetGinjector injector = Dagger_MyWidgetGinjector.create();
SomeService service = injector.getSomeService();

Hope this helps!

[confile]

I manage to translate a simple project which included dagger2. Using javac and j2objc worked fine even with the generated classes from the Dagger Components. I mean the Dagger_....java files.

I created this pull request: https://github.com/brunobowden/j2objc-gradle/pull/10 so you can specify the source path of the annotation processor output.

Here is the configuration I use:

    translateFlags """--no-package-directories --prefixes prefixes.properties --mapping method-mappings.properties -use-arc -classpath ${projectDir}/lib/dagger-2.0-SNAPSHOT.jar"""

My generated files in build/source/apt are:

Dagger_MyWidgetGinjector.java
MyWidgetClientModule$$ProvideSomeServiceFactory.java

(Based on this project: https://github.com/confile/GWT-Dagger2-Demo)

Here is what I get while doing the translation:

error: /Users/mg/Documents/Grails/GGTS3.6.2/TestJ2Objc/build/source/apt/com/example/incrementer/shared/test2/Dagger_MyWidgetGinjector.java:26: MyWidgetClientModule$$ProvideSomeServiceFactory cannot be resolved to a type
translating /Users/mg/Documents/Grails/GGTS3.6.2/TestJ2Objc/build/source/apt/com/example/incrementer/shared/test2/MyWidgetClientModule$$ProvideSomeServiceFactory.java
Translated 8 files: 1 errors, 0 warnings

Do you have any idea what to do here? Thank for your help.

[confile]

I should post my command line compile command as well. The following works perfect:

javac -d build/classes -sourcepath src/main/java:build/source/apt src/main/java/com/example/incrementer/shared/SomeEvent.java src/main/java/com/example/incrementer/shared/NumberIncrementer.java src/main/java/com/example/incrementer/shared/JSNIExample.java src/main/java/com/example/incrementer/shared/test2/SomeService.java src/main/java/com/example/incrementer/shared/test2/SomeServiceImpl.java src/main/java/com/example/incrementer/shared/test2/MyWidgetClientModule.java src/main/java/com/example/incrementer/shared/test2/MyWidgetGinjector.java build/source/apt/com/example/incrementer/shared/test2/Dagger_MyWidgetGinjector.java -classpath lib/dagger-2.0-SNAPSHOT.jar:lib/javax.inject-1.jar

The generated file MyWidgetClientModule$$ProvideSomeServiceFactory.java is also compiled although I did not explicitly call ed it in the javac command. When I put this file in the javac classpath then I get an error

javac: file not found: build/source/apt/com/example/incrementer/shared/test2/MyWidgetClientModule55781ProvideSomeServiceFactory.java

I guess this is because of you $ sign. May be this causes you plugin to fail to translate too?

[confile]

@brunobowden Did you make any progress on this issue?

[jonnolen]

I haven't done any additional work on this gem, and have no immediate
plans. We have ended up abandoning j2objc for our current project.

On Wed, Mar 4, 2015 at 10:15 AM, Confile [email protected] wrote:

@brunobowden https://github.com/brunobowden Did you make any progress
on this issue?

—
Reply to this email directly or view it on GitHub
https://github.com/brunobowden/j2objc-gradle/issues/4#issuecomment-77175608
.

[confile]

And what about you @brunobowden ?

[brunobowden]

Hi @confile. I'm busy with some higher priority work right now and
attending the TED conference next week. I'll likely to return to this after
that, in about two weeks tiem.

On Wed, Mar 4, 2015 at 7:53 AM Confile [email protected] wrote:

And what about you @brunobowden https://github.com/brunobowden ?

—
Reply to this email directly or view it on GitHub
https://github.com/brunobowden/j2objc-gradle/issues/4#issuecomment-77183702
.

[confile]

@brunobowden Hi Bruno, did you make any progress o this issue?

[confile]

@brunobowden This is a j2objc issue see google/j2objc#510 (comment)

[confile]

I reopened this issue because translation still raises error. See google/j2objc#513

[confile]

@brunobowden I still struggling with this issue and I need help. Translating dagger and linking to Xcode works fine using the following configuration:

translateFlags """--no-package-directories --prefixes prefixes.properties -use-arc --doc-comments --build-closure
        -classpath ${projectDir}/lib/auto-factory-0.1-beta1.jar:${projectDir}/lib/auto-service-1.0-rc1.jar:${projectDir}/lib/guava-16.0.jar:${projectDir}/lib/javawriter-2.4.0.jar:${projectDir}/lib/dagger-1.2.0.jar"""

translateSourcepaths "${projectDir}/libSrc/javax.inject-1-sources.jar:${projectDir}/libSrc/dagger-2.0-SNAPSHOT-sources.jar"

The only problem is that transpiling gives the following warning:

warning: could not find source path for dagger.Provides.Type

If I linke my translated files with Xcode I get the following compiler error:

clang: error: no such file or directory: '/Users/mg/Documents/Grails/GGTS3.6.2/TestJ2Objc/build/j2objc/ApplicationModule$ProvideSomeClassXFactory.m'
clang: error: no input files

If I do not use the @Provides annotation from dagger2 I can build in Xcode without problems.

Here is the code I use:

package com.example;

import javax.inject.Singleton;

import dagger.Module;
import dagger.Provides;




@Module
public class ApplicationModule {

    @Provides
    @Singleton
    SomeClassX provideSomeClassX() {
        return new SomeClassX();
    }
}

and

package com.example;

import dagger.Provides;

public class SomeClassX {
}

If you could solve this last part of the puzzle, then we are done.

[confile]

Here is the latest open issue: google/j2objc#517

[brunobowden]

@confile - excellent writeup on the bug, thanks for taking the time to do
that properly

On Thu, Apr 9, 2015 at 2:33 PM Confile [email protected] wrote:

Here is the latest open issue: google/j2objc#517
https://github.com/google/j2objc/issues/517

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Reply to this email directly or view it on GitHub
https://github.com/brunobowden/j2objc-gradle/issues/4#issuecomment-91361935
.

[confile]

@brunobowden Well I would need a little help on this issue.

[confile]

@brunobowden How do you deal with java files generated with annotation processor which contains $$

[confile]

@brunobowden This is fixed with my latest pull request.