Koltin24，flutterpageview预加载

jcenter()

}

接下来在build.gradle(app)下添加

apply plugin: ‘kotlin-kapt’

添加依赖:

//dagger框架

//dagger2 support begin

implementation “com.google.dagger:dagger-android:$dagger_version”

implementation “com.google.dagger:dagger-android-support:$dagger_version” // if you use the support libraries

//annotationProcessor “com.google.dagger:dagger-android-processor:$dagger_version”//java use

//annotationProcessor “com.google.dagger:dagger-compiler:$dagger_version”//java use

kapt “com.google.dagger:dagger-android-processor:$dagger_version”//kotlin use

kapt “com.google.dagger:dagger-compiler:$dagger_version”//kotlin use

//dagger2 support end

HomeFragmentComponent.kt

package com.example.takeout.dagger2.component

import com.example.takeout.ui.fragment.HomeFragment

import com.example.takeout.dagger2.module.HomeFragmentModule

import dagger.Component

@Component(modules = arrayOf(HomeFragmentModule::class)) interface HomeFragmentComponent {

fun inject(homeFragment: HomeFragment)

}

HomeFragmentModule.kt

package com.example.takeout.dagger2.module

import com.example.takeout.presenter.HomeFragmentPresenter

import com.example.takeout.ui.fragment.HomeFragment

import dagger.Module

import dagger.Provides

@Module class HomeFragmentModule(val homeFragment: HomeFragment){

@Provides fun provideHomeFragmentPresenter(): HomeFragmentPresenter {

return HomeFragmentPresenter(homeFragment)

}

}

HomeFragment.kt中使用注解，不再使用homeFragmentPresenster = HomeFragmentPresenster(this)这种耦合的形式

package com.example.takeout.ui.fragment

import android.app.Fragment

import android.graphics.Color

import android.os.Bundle

import android.util.Log

import android.util.TypedValue

import android.view.LayoutInflater

import android.view.View

import android.view.ViewGroup

import androidx.recyclerview.widget.LinearLayoutManager

import androidx.recyclerview.widget.RecyclerView

import com.example.takeout.R

import com.example.takeout.dagger2.component.DaggerHomeFragmentComponent

import com.example.takeout.dagger2.module.HomeFragmentModule

import com.example.takeout.presenter.HomeFragmentPresenter

import com.example.takeout.ui.adapter.HomeRvAdapter

import com.heima.takeout.model.beans.Seller

import kotlinx.android.synthetic.main.fragment_home.*

import org.jetbrains.anko.find

import org.jetbrains.anko.toast

import javax.inject.Inject

class HomeFragment : Fragment() {

lateinit var homeRvAdapter: HomeRvAdapter//延迟初始化

lateinit var rvHome: RecyclerView

//dragger2注解使用prenster

@Inject

lateinit var homeFragmentPresenter:HomeFragmentPresenter

override fun onCreateView(

inflater: LayoutInflater,

container: ViewGroup?,

savedInstanceState: Bundle?

): View? {

val view = View.inflate(activity, R.layout.fragment_home, null)

rvHome = view.find(R.id.rv_home)

//上下布局

rvHome.layoutManager = LinearLayoutManager(activity)

homeRvAdapter = HomeRvAdapter(activity)

rvHome.adapter = homeRvAdapter

// homeFragmentPresenster = HomeFragmentPresenster(this)

//TODO:解耦View层和P层，通过dagger2（基于注解的依赖注入）生成HomeFragmentPresenter

DaggerHomeFragmentComponent.builder().homeFragmentModule(HomeFragmentModule(this)).build().inject(this)

distance = 120.dp2px()

retu

《Android学习笔记总结+最新移动架构视频+大厂安卓面试真题+项目实战源码讲义》

【docs.qq.com/doc/DSkNLaERkbnFoS0ZF】 完整内容开源分享

rn view

}

fun Int.dp2px(): Int {

return TypedValue.applyDimension(

TypedValue.COMPLEX_UNIT_DIP,

toFloat(), resources.displayMetrics

).toInt()

}

override fun onActivityCreated(savedInstanceState: Bundle?) {

super.onActivityCreated(savedInstanceState)

initData()

}

val datas: ArrayList = ArrayList()

var sum: Int = 0

var distance: Int = 0

标签：dagger,takeout,Koltin24,flutterpageview,import,android,com,example,加载
来源： https://blog.csdn.net/zuihao12366/article/details/122047278