android - 方形/ Dagger 。安卓java.lang.StackOverflowError

尝试为Android使用匕首依赖注入器。
这是扩展应用程序类：

public class MyApplication extends Application {

    private ObjectGraph objectGraph;

    protected List<Object> getModules() {
        List<Object> objectArrayList = new ArrayList<Object>();

        objectArrayList.add(new AndroidModule(this));
        objectArrayList.add(new DeviceModule());

        return objectArrayList;
    }

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

        objectGraph = ObjectGraph.create(getModules().toArray());
    }

    public void inject(Object object) {
        objectGraph.inject(object);
    }
}

我的模块：
安卓模块

@Module(library = true)
public class AndroidModule {
    private final MyApplication myApplication;

    public AndroidModule(MyApplication myApplication) {
        this.myApplication = myApplication;
    }

    @Provides
    @Singleton
    @ForApplication
    public Context provideApplicationContext() {
        return myApplication.getApplicationContext();
    }

    @Provides
    @Singleton
    public LocationManager provideLocationManager() {
        return (LocationManager)myApplication.getSystemService(Context.LOCATION_SERVICE);
    }

    @Provides
    public NetworkInfo provideNetworkInfo() {
        ConnectivityManager connectivityManager = (ConnectivityManager)myApplication.getSystemService(Context.CONNECTIVITY_SERVICE);
        return connectivityManager.getActiveNetworkInfo();
    }
}

设备模块

 @Module(injects = MainActivity.class, complete = false, library = true)
public class DeviceModule {

    @Provides
    public SystemValidator provideSystemValidator() {
        return new AndroidSystemValidator();
    }

    @Provides
    public Device provideDevice(SystemValidator systemValidator) {
        return new Device(systemValidator);
    }
}

设备类

public class Device {
    private final SystemValidator systemValidator;

    @Inject
    public Device(SystemValidator systemValidator) {
        this.systemValidator = systemValidator;
    }

    public void validate() {
        boolean isGPSTurnedOn = systemValidator.isGPS();
        boolean isNetworkActive = systemValidator.isNetwork();
    }
}

系统验证程序类

public class AndroidSystemValidator implements SystemValidator {
    @Inject
    LocationManager locationManager;

    @Inject
    NetworkInfo networkInfo;

    @Override
    public boolean isNetwork() {
        return (null != networkInfo && (networkInfo.getType() == ConnectivityManager.TYPE_MOBILE));
    }

    @Override
    public boolean isGPS() {
        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
    }
}

这段代码编译成功，但在运行时，我尝试将对象注入objectgraph

java.lang.StackOverflowError
        at com.xxxx.app.modules.system.DeviceModule$$ModuleAdapter$ProvideDeviceProvidesAdapter.get(DeviceModule$$ModuleAdapter.java:77)
        at com.xxxx.app.modules.system.DeviceModule$$ModuleAdapter$ProvideDeviceProvidesAdapter.get(DeviceModule$$ModuleAdapter.java:113)
        at com.xxxx.app.modules.system.DeviceModule$$ModuleAdapter$ProvideDeviceProvidesAdapter.get(DeviceModule$$ModuleAdapter.java:77)
        at com.xxxx.app.modules.system.DeviceModule$$ModuleAdapter$ProvideDeviceProvidesAdapter.get(DeviceModule$$ModuleAdapter.java:113)
        at com.xxxx.app.modules.system.DeviceModule$$ModuleAdapter$ProvideDeviceProvidesAdapter.get(DeviceModule$$ModuleAdapter.java:77)
        at com.xxxx.app.modules.system.DeviceModule$$ModuleAdapter$ProvideDeviceProvidesAdapter.get(DeviceModule$$ModuleAdapter.java:113)

编辑：
代码被工作解决方案更改，但即使java.lang.StackOverflowError和MainActivity对象被标记为LocationManager，也为空。试图通过添加NetworkInfo来告诉@Inject将这些对象放置在何处，但没有成功。如何在不创建参数化construtor的情况下注入这些对象？

最佳答案

我想你的问题是

 @Provides
 public Device provideDevice(Device device) {
     return device;
 }

这个装置是从哪里来的？你需要在这一点上创建一个新实例。
对于您的设备和AndroidSystemValidator，我认为您应该使用构造函数注入它们。如果你想用匕首来做这件事

@Inject public Device(SystemValidator systemValidator) {
  this.systemValidator = systemValidator;
}

否则，使用类似的模块执行您刚刚更改为

@Provides
public Device provideDevice(SystemValidator systemValidator) {
    return new Device(systemValidator);
}