匕首：上類沒有注射的成員多次注射

Question

我正在試圖注入2個模塊到一個類時的錯誤消息：

Error:(18, 8) error: No injectable members on ...SQLiteHandler. 
Do you want to add an injectable constructor? required by ...activity.AuthenticatorActivity 
for ...ServerHandlerModule 


Error:(18, 8) error: No injectable members on ...ServerHandler. 
Do you want to add an injectable constructor? required by ....activity.AuthenticatorActivity 
for ...Modules.SQLiteHandlerModule 

我無法理解此錯誤消息作爲兩個模塊別t似乎彼此有任何關係。在我添加ServerHandlerModule之前，注入工作正常，但當它們都被注入時，它們似乎互相干擾。

SQLiteHandlerModule：

@Module(injects = {AuthenticatorActivity.class, MainActivity.class}) 
public class SQLiteHandlerModule { 

private final Context context; 

public SQLiteHandlerModule(Context context) { 
    this.context = context; 
} 

@Provides 
@Singleton 
SQLiteHandler providesSQLiteHandler(@ForApplication Context context) { 
    return new SQLiteHandler(context); 
} 

@Provides 
@Singleton 
@ForApplication 
Context provideApplicationContext() { 
    return context; 
} 
} 

ServerHandlerModule：

@Module(injects = {AuthenticatorActivity.class}) 
public class ServerHandlerModule { 

public ServerHandlerModule() {} 

@Provides 
@Singleton 
ServerHandler providesServerHandler() { 
    return new ServerHandler(); 
} 

}

AuthenticatorActivity：

​​

有誰知道我需要添加到解決THI問題？

Answer 1

Dagger需要對要注入的類的構造函數進行註釋。

@Inject 
public SQLiteHandler(@ForApplication Context context) { 
    super(context, DATABASE_NAME, null, DATABASE_VERSION); 
    this.context = context; 
} 

@Inject 
public ServerHandler() { 
}