如果没有@Inject构造函数或@Provides注释方法,则无法提供Android Dagger 2.11
在我的项目中,我使用salt库直接使用wi-fi。下面是类构造函数:如果没有@Inject构造函数或@Provides注释方法,则无法提供Android Dagger 2.11,android,exception,dagger-2,Android,Exception,Dagger 2,在我的项目中,我使用salt库直接使用wi-fi。下面是类构造函数: public Salut(SalutDataReceiver dataReceiver, SalutServiceData salutServiceData, SalutCallback deviceNotSupported) { ... } public SalutDataReceiver(Activity activity, SalutDataCallback da
public Salut(SalutDataReceiver dataReceiver,
SalutServiceData salutServiceData,
SalutCallback deviceNotSupported) {
...
}
public SalutDataReceiver(Activity activity, SalutDataCallback dataCallback) {
}
类DataReceiver作为参数引用活动。他还回电话。下面是类构造函数:
public Salut(SalutDataReceiver dataReceiver,
SalutServiceData salutServiceData,
SalutCallback deviceNotSupported) {
...
}
public SalutDataReceiver(Activity activity, SalutDataCallback dataCallback) {
}
由于有一个与活动的刚性链接,我假设这个对象应该从外部转移。以下是模块和组件的类别:
@Module
public class WifiCommunicationModule {
public WifiCommunicationModule() {
}
@Provides
@Singleton
public Salut provideSalut(SalutDataReceiver dataReceiver) {
SalutServiceData serviceData = new SalutServiceData("testService", 50489, "test");
return new Salut(dataReceiver, serviceData, null);
}
}
@Singleton
@Component(modules = {
AppModule.class,
WifiCommunicationModule.class
})
public interface MainComponent {
void inject(MainActivity activity);
}
public class MainActivity extends AppCompatActivity {
@Inject
Salut salut;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
但在编译时引发异常:
错误:(25,10)错误:com.peak.sallt.sallDataReceiver不能为
不使用@Inject构造函数或从@Provides注释
方法。com.peak.sallt.sallDataReceiver在
com.test.modules.WifiCommunicationModule.provideSalut(数据接收器)
com.peak.sallt.sallt在
com.test.views.activities.MainActivity.salt
com.test.views.activities.main活动在
com.test.components.MainComponent.inject(活动)
更新
@Zayniddin Mamarasulov先生建议您从sallDataReceiver创建一个派生类,并将构造函数标记为@Inject。但不幸的是,这也不起作用
public class SalutDataReceiverExtension extends SalutDataReceiver {
@Inject
public SalutDataReceiverExtension(Activity activity, SalutDataCallback dataCallback) {
super(activity, dataCallback);
}
}
@Module
public class WifiCommunicationModule {
public WifiCommunicationModule() {
}
@Provides
@Singleton
public Salut provideSalut(SalutDataReceiverExtension dataReceiver) {
SalutServiceData serviceData = new SalutServiceData("testService", 50489, "test");
return new Salut(dataReceiver, serviceData, null);
}
}
错误:(25,10)错误:如果没有
@Inject构造函数或来自@Inject的构造函数提供了带注释的方法。
android.app.Activity在
com.test.implementation.DataReceiverExtend。(活动,…)
com.test.implementation.sallDataReceiverExtend在
com.test.modules.WifiCommunicationModule.provideSalut(数据接收器)
com.peak.sallt.sallt在
com.test.views.activities.MainActivity.salt
com.test.views.activities.main活动在
com.test.components.MainComponent.inject(活动)
向DataReceiver的构造函数添加@Inject注释,如下所示:
@Inject
public SalutDataReceiver(Activity activity, SalutDataCallback dataCallback) {
}
这是一个外部库,我不能这样做。您是否尝试重写其构造函数?尝试扩展DataReceiver类并将@Inject注释添加到您自己的类的构造函数中。我不能确切地说它有效,但它可能会帮助你