初步实现module及component

app/src/main/java/com/bgycc/smartcanteen/RootApp.java

@@ -13,7 +13,10 @@ import com.blankj.utilcode.util.Utils;
 
 import java.io.File;
 
-public class RootApp extends Application implements Configuration.Provider {
+import dagger.android.AndroidInjector;
+import dagger.android.support.DaggerApplication;
+
+public class RootApp extends DaggerApplication implements Configuration.Provider {
     private static final String LOG_PREFIX = "app";
     private static final String LOG_DIR = "log";
     // 日志文件保留周期
@@ -40,4 +43,9 @@ public class RootApp extends Application implements Configuration.Provider {
                 .setExecutor(SCTaskExecutor.getIOThreadExecutor())
                 .build();
     }
+
+    @Override
+    protected AndroidInjector<? extends DaggerApplication> applicationInjector() {
+        return null;
+    }
 }

app/src/main/java/com/bgycc/smartcanteen/dagger/ApplicationComponent.java

+package com.bgycc.smartcanteen.dagger;
+
+import android.content.Context;
+
+import com.bgycc.smartcanteen.RootApp;
+
+import javax.inject.Singleton;
+
+import dagger.BindsInstance;
+import dagger.Component;
+import dagger.android.AndroidInjector;
+
+@Singleton
+@Component(modules = ApplicationModule.class)
+interface ApplicationComponent extends AndroidInjector<RootApp> {
+    @Component.Factory
+    interface Factory {
+        ApplicationComponent create(@BindsInstance Context applicationContext);
+    }
+}
\ No newline at end of file

app/src/main/java/com/bgycc/smartcanteen/dagger/ApplicationModule.java

+package com.bgycc.smartcanteen.dagger;
+
+import android.content.Context;
+
+import androidx.room.Room;
+
+import com.bgycc.smartcanteen.data.DatabaseManager;
+import com.bgycc.smartcanteen.data.ForceToPayOffline;
+import com.bgycc.smartcanteen.data.OldDataCompatible;
+import com.bgycc.smartcanteen.data._1To_2Migration;
+import com.bgycc.smartcanteen.entity.PayRequest;
+import com.bgycc.smartcanteen.entity.typeadapter.PayRequestTypeAdapter;
+import com.bgycc.smartcanteen.repository.CommandRepository;
+import com.bgycc.smartcanteen.repository.PayDataRepository;
+import com.bgycc.smartcanteen.repository.PayResponseRepository;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+import javax.inject.Singleton;
+
+import dagger.Module;
+import dagger.Provides;
+import kotlin.jvm.JvmStatic;
+
+@Module
+public class ApplicationModule {
+    private static final String DB_NAME = "smart_canteen.db";
+
+    @JvmStatic
+    @Singleton
+    @Provides
+    static CommandRepository provideCommandRepository(DatabaseManager database) {
+        return new CommandRepository(database.getCommandDao());
+    }
+
+    @JvmStatic
+    @Singleton
+    @Provides
+    static PayDataRepository providePayDataRepository(DatabaseManager database) {
+        return new PayDataRepository(database.getPayDataDao());
+    }
+
+    @JvmStatic
+    @Singleton
+    @Provides
+    static PayResponseRepository providePayResponseRepository(DatabaseManager database) {
+        return new PayResponseRepository(database.getPayResponseDao());
+    }
+
+    @JvmStatic
+    @Singleton
+    @Provides
+    static DatabaseManager provideDatabase(Context context) {
+        return Room.databaseBuilder(
+                context.getApplicationContext(),
+                DatabaseManager.class,
+                DB_NAME)
+                .addCallback(new OldDataCompatible())
+                .addCallback(new ForceToPayOffline())
+                .addMigrations(new _1To_2Migration())
+                // 一旦版本不兼容则清空数据库
+                .fallbackToDestructiveMigration()
+                .allowMainThreadQueries()
+                .build();
+    }
+
+    @JvmStatic
+    @Singleton
+    @Provides
+    static Gson provideGson() {
+        return new GsonBuilder()
+                .registerTypeAdapter(PayRequest.class, new PayRequestTypeAdapter())
+                .create();
+    }
+}