kotlin-dagger2

在 Kotlin 项目中使用 Dagger2，暂时 @Module @Component 还有 Application需要使用 Java文件，然后 Koltin 调用。否则没有办法生成代码。

文件列表

生成代码 

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package xyz.hanks.kotlindagger

/**
 * Created by hanks on 16/3/20.
 */
class Keyboard(var type: String?)
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/**
 * Created by hanks on 16/3/20.
 */
@Module
public class KeyboardModule {

    String keyboardType;

    public KeyboardModule(String keyboardType) {
        this.keyboardType = keyboardType;
    }

    @Provides
    @Singleton
    public Keyboard provideKeyboard() {
        return new Keyboard(keyboardType);
    }

}
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package xyz.hanks.kotlindagger;

import javax.inject.Singleton;

import dagger.Component;

/**
 * Created by hanks on 16/3/20.
 */
@Singleton
@Component(modules = {KeyboardModule.class})
public interface KeyboardComponent {
    void inject(MainActivity activity);
}

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package xyz.hanks.kotlindagger;

import android.app.Application;

/**
 * Created by hanks on 16/3/20.
 */
public class MyApp extends Application {

    KeyboardComponent mKeyboardComponent;

    @Override public void onCreate() {
        super.onCreate();

        mKeyboardComponent = DaggerKeyboardComponent.builder()
                .keyboardModule(new KeyboardModule("茶轴"))
                .build();
    }

    public KeyboardComponent getKeyboardComponent() {
        return mKeyboardComponent;
    }
}

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package xyz.hanks.kotlindagger

import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.widget.Toast
import javax.inject.Inject

class MainActivity : AppCompatActivity() {

    @Inject @JvmField var mKeyboard: Keyboard ? = null // 注意使用@JvmField

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        (applicationContext as MyApp).keyboardComponent?.inject(this)

        Toast.makeText(application, mKeyboard?.type, Toast.LENGTH_LONG).show()

    }
}

或者参考 dagger2-kotlin,其中使用 kapt 生成代码。
Better Annotation Processing: Supporting Stubs in kapt

文章来自： https://hanks.pub