我正在处理一个使用 Dagger 的现有项目。
这是我第一次尝试使用 Dagger ,对此我有点不知所措。
我已尝试从现有 fragment/模块/组件复制所有现有类、接口(interface)和其他所有内容,但出现以下错误:
Error:(7, 42) 错误:找不到符号类 DaggerDashboardComponent
我尝试了Clean Project
和Rebuild Project
,我尝试了Invalidate Caches and Restart
,我从 Android 的编译器设置中启用了注释功能Studio,我尝试关闭项目并重新打开它,但由于某种原因(可能是类生成中的一些错误),我无法编译,因为 dagger 没有生成所需的类。
请在下面找到我创建的所有类/接口(interface):
fragment 仪表板:
package com.example.app.ui.dashboard;
import com.example.app.R;
import com.example.app.base.AbstractRequestFragment;
import com.example.app.databinding.FragmentDashboardBinding;
import com.example.app.di.component.AppComponent;
import com.example.app.di.component.DaggerDashboardComponent;
import com.example.app.di.module.DashboardModule;
import com.example.app.presenter.dashboard.DashboardPresenter;
import com.example.app.ui.dashboard.DashboardView;
import javax.inject.Inject;
import retrofit2.Call;
/**
* Created by on 31-05-2017.
*/
public class FragmentDashboard extends AbstractRequestFragment<FragmentDashboardBinding> implements DashboardView {
@Inject
DashboardPresenter dashboardPresenter;
@Override
protected int layoutToInflate() {
return R.layout.fragment_dashboard;
}
@Override
protected void injectComponent(AppComponent appComponent) {
DaggerDashboardComponent.builder()
.appComponent(appComponent)
.dashboardModule(new DashboardModule(this))
.build()
.inject(this);
}
@Override
protected void initializePresenter(FragmentDashboardBinding fragmentDashboardBinding) {
dashboardPresenter.initialize(fragmentDashboardBinding);
}
@Override
public void addRequestToStack(Call<?> call) {
addRequest(call);
}
}
仪表板组件:
package com.example.app.di.component;
import com.example.app.di.module.DashboardModule;
import com.example.app.di.scope.Fragment;
import com.example.app.presenter.dashboard.DashboardPresenter;
import com.example.app.ui.dashboard.DashboardView;
import com.example.app.ui.dashboard.FragmentDashboard;
import dagger.Component;
/**
* Created by on 31-05-2017.
*/
@Fragment
@Component(modules = DashboardModule.class, dependencies = AppComponent.class)
public interface DashboardComponent {
/* BASE */
void inject(FragmentDashboard fragmentDashboard);
/* DASHBOARD */
DashboardView providesDashboardView();
DashboardPresenter providesDashboardPresenter();
}
仪表板模块:
package com.example.app.di.module;
import com.example.app.di.scope.Fragment;
import com.example.app.ui.dashboard.DashboardView;
import dagger.Module;
import dagger.Provides;
/**
* Created by on 31-05-2017.
*/
@Module
public class DashboardModule {
private DashboardView view;
public DashboardModule(DashboardView view) {
this.view = view;
}
@Fragment
@Provides
public DashboardView providesDashboardView() {
return view;
}
}
仪表板演示者:
package com.example.app.presenter.dashboard;
import com.example.app.base.BasePresenter;
import com.example.app.databinding.FragmentDashboardBinding;
import com.example.app.databinding.FragmentLoginBinding;
/**
* Created by on 31-05-2017.
*/
public interface DashboardPresenter extends BasePresenter<FragmentDashboardBinding> {
}
DashboardPresenterImpl:
package com.example.app.presenter.dashboard;
import android.content.Intent;
import android.view.MotionEvent;
import android.view.View;
import com.massivedisaster.activitymanager.ActivityFragmentManager;
import com.example.app.api.ApiListener;
import com.example.app.base.ActivityFullScreen;
import com.example.app.databinding.FragmentDashboardBinding;
import com.example.app.databinding.FragmentLoginBinding;
import com.example.app.presenter.dashboard.DashboardPresenter;
import com.example.app.ui.login.LoginView;
import com.example.app.ui.main.FragmentMain;
import com.example.app.util.ApiManager;
import com.example.app.util.OnOneClickListener;
import com.example.app.util.OnTouchListener;
import com.example.app.util.SnackbarHandler;
import com.example.app.util.ViewHelper;
import com.example.app.util.factory.LoginFactory;
import java.util.ArrayList;
/**
* Created by on 31-05-2017.
*/
public class DashboardPresenterImpl implements DashboardPresenter {
private ApiManager apiManager;
private FragmentDashboardBinding fragmentBinding;
private LoginFactory loginFactory;
private LoginView loginView;
private ViewHelper viewHelper;
public DashboardPresenterImpl(ApiManager apiManager, LoginFactory loginFactory, LoginView loginView, ViewHelper viewHelper) {
this.apiManager = apiManager;
this.loginFactory = loginFactory;
this.loginView = loginView;
this.viewHelper = viewHelper;
}
@Override
public void initialize(FragmentDashboardBinding fragmentBinding) {
this.fragmentBinding = fragmentBinding;
this.fragmentBinding.btnLogin.setOnClickListener(new OnLoginClickListener());
// apply on touch cleanup to view and all elements within view
ArrayList<View> touchables = fragmentBinding.getRoot().getTouchables();
touchables.add(fragmentBinding.getRoot());
for (View v : touchables) {
v.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
return super.onTouch(view, motionEvent);
}
});
}
}
// main login listener
private class OnLoginClickListener extends OnOneClickListener {
@Override
public void doOnClick(View view) {
Intent intent = ActivityFragmentManager.getIntent(loginView.getActivity(), ActivityFullScreen.class, FragmentMain.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
loginView.getActivity().startActivity(intent);
}
}
}
仪表板 View :
package com.example.app.ui.dashboard;
import com.example.app.base.RequestView;
/**
* Created by on 31-05-2017.
*/
public interface DashboardView extends RequestView {
}
fragment 仪表板:
package com.example.app.ui.dashboard;
import com.example.app.R;
import com.example.app.base.AbstractRequestFragment;
import com.example.app.databinding.FragmentDashboardBinding;
import com.example.app.di.component.AppComponent;
import com.example.app.di.component.DaggerDashboardComponent;
import com.example.app.di.module.DashboardModule;
import com.example.app.presenter.dashboard.DashboardPresenter;
import com.example.app.ui.dashboard.DashboardView;
import javax.inject.Inject;
import retrofit2.Call;
/**
* Created by on 31-05-2017.
*/
public class FragmentDashboard extends AbstractRequestFragment<FragmentDashboardBinding> implements DashboardView {
@Inject
DashboardPresenter dashboardPresenter;
@Override
protected int layoutToInflate() {
return R.layout.fragment_dashboard;
}
@Override
protected void injectComponent(AppComponent appComponent) {
DaggerDashboardComponent.builder()
.appComponent(appComponent)
.dashboardModule(new DashboardModule(this))
.build()
.inject(this);
}
@Override
protected void initializePresenter(FragmentDashboardBinding fragmentDashboardBinding) {
dashboardPresenter.initialize(fragmentDashboardBinding);
}
@Override
public void addRequestToStack(Call<?> call) {
addRequest(call);
}
}
谁能告诉我这里缺少什么?
最佳答案
您是否在 gradle 中添加了 dagger 预处理?例如,
apt 'com.google.dagger:dagger-compiler:2.x'
您应该检查编译器日志。如果 dagger 发现错误,则所有 dagger 编译都会失败。 Dagger 不太友好地详细说明编译器错误,但您应该在 dagger 文件中看到一个错误列表,其中一个(通常是第一个)应该会告诉您 dagge 没有生成类的真正原因。
关于java - Android Dagger 报错找不到符号类 DaggerDashboardComponent,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45617479/