MVVM+组件化+Arouter实现
MVVM+组件化实现
模块概览
底层模块：common、network、resource
功能模块：player、firebase、pay
界面模块：mobile、tablet、tablet_login
壳模块: app
模块实现
1.公共模块的gradle配置
由于不同模块，可能引用相同的依赖库，那么对于这部分共同的模块则需要提取出来做统一的管理，因此在项目的根目录创建了common.gradle。
//project是根项目，可以简单认为是个对象，对象持有一个名词为ext的成员变量
project.ext {
//基本的变量配合和版本控制
compileSdkVersion = 30
buildToolsVersion = "30"
minSdkVersion = 21
targetSdkVersion = 30
applicationId = "com.sdmc.xmediatv"
versionCode = 4
versionName = "4.7.0"
//设置app配置
setAppDefaultConfig = {
extension ->
//指定为application，代表该模块可以单独调试
extension.apply plugin: 'com.android.application'
extension.description "app"
//公共的apply 主要是用于三方库
extension.apply plugin: 'kotlin-android'
extension.apply plugin: 'kotlin-android-extensions'
extension.apply plugin: 'kotlin-kapt'
//设置项目的android
setAppAndroidConfig extension.android
//设置项目的三方库依赖
setDependencies extension.dependencies
}
//设置lib配置（只可以作为lib,不可单独调试）
setLibDefaultConfig = {
extension ->
//library，代表只是单纯的库，不需要依赖其他模块
extension.apply plugin: 'com.android.library'
extension.description "lib"
setLibAndroidConfig extension.android
setDependencies extension.dependencies
}
//是否允许module单独调试
isModuleDebug = false
//动态改变，用于单模块调试
setAppOrLibDefaultConfig = {
extension ->
if (project.ext.isModuleDebug) {
extension.apply plugin: 'com.android.application'
extension.description "app"
} else {
extension.apply plugin: 'com.android.library'
extension.description "lib"
}
extension.apply plugin: 'kotlin-android'
extension.apply plugin: 'kotlin-android-extensions'
extension.apply plugin: 'kotlin-kapt'
//设置通用Android配置
setAppOrLibAndroidConfig extension.android
//设置通用依赖配置
setDependencies extension.dependencies
}
//设置application 公共的android配置
setAppAndroidConfig = {
extension -> //extension 相当于 android 对象
extension.compileSdkVersion project.ext.compileSdkVersion
extension.buildToolsVersion project.ext.buildToolsVersion
extension.defaultConfig {
applicationId project.ext.applicationId
minSdkVersion project.ext.minSdkVersion
targetSdkVersion project.ext.targetSdkVersion
versionCode project.ext.versionCode
versionName project.ext.versionName
extension.flavorDimensions "versionCode"
testInstrumentationRunner "android.support.tablet_test.runner.AndroidJUnitRunner"
//ARouter 编译生成路由
kapt {
arguments {
arg("AROUTER_MODULE_NAME", project.getName())
includeCompileClasspath = true
}
}
}
extension.buildFeatures {
dataBinding = true
// for view binding :
// viewBinding = true
}
}
//设置lib 公共的android配置
setLibAndroidConfig = {
extension -> //extension 相当于 android 对象
extension.compileSdkVersion project.ext.compileSdkVersion
extension.buildToolsVersion project.ext.buildToolsVersion
extension.defaultConfig {
minSdkVersion project.ext.minSdkVersion
targetSdkVersion project.ext.targetSdkVersion
versionCode project.ext.versionCode
versionName project.ext.versionName
testInstrumentationRunner "android.support.tablet_test.runner.AndroidJUnitRunner"
//ARouter 编译生成路由
/*kapt {
arguments {
arg("AROUTER_MODULE_NAME", project.getName())
}
}*/
}
extension.buildFeatures {
dataBinding = true
// for view binding :
// viewBinding = true
}
}
//设置通用的 android配置（可作为project单独调试）
setAppOrLibAndroidConfig = {
extension -> //extension 相当于 android 对象
extension.compileSdkVersion project.ext.compileSdkVersion
extension.buildToolsVersion project.ext.buildToolsVersion
extension.defaultConfig {
minSdkVersion project.ext.minSdkVersion
targetSdkVersion project.ext.targetSdkVersion
versionCode project.ext.versionCode
versionName project.ext.versionName
extension.flavorDimensions "versionCode"
testInstrumentationRunner "android.support.tablet_test.runner.AndroidJUnitRunner"
//ARouter 编译生成路由
kapt {
arguments {
arg("AROUTER_MODULE_NAME", project.getName())
includeCompileClasspath = true
}
}
}
extension.buildFeatures {
//启用自动绑定view id
dataBinding = true
}
//使用的jdk版本
extension.compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
extension.kotlinOptions {
jvmTarget = JavaVersion.VERSION_1_8
}
//动态改变清单文件资源指向
extension.sourceSets {
main {
if (project.ext.isModuleDebug) {
manifest.srcFile 'src/main/manifest/AndroidManifest.xml'
} else {
manifest.srcFile 'src/main/AndroidManifest.xml'
}
}
}
}
//公用的三方库依赖，慎重引入，主要引入基础库依赖
setDependencies = {
extension ->
extension.implementation fileTree(dir: 'libs', include: ['*.jar'])
extension.kapt 'com.alibaba:arouter-compiler:1.2.2'
//ARouter 路由apt插件，用于生成相应代码，每个module都需要
extension.implementation 'com.alibaba:arouter-api:1.5.0'
extension.implementation 'com.alibaba:arouter-compiler:1.2.2'
extension.implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
extension.implementation 'androidx.core:core-ktx:1.3.1'
extension.implementation 'com.google.code.gson:gson:2.8.6'
extension.implementation 'androidx.appcompat:appcompat:1.2.0'
extension.implementation 'androidx.constraintlayout:constraintlayout:2.0.0'
extension.implementation 'androidx.recyclerview:recyclerview:1.0.0'
}
}根目录的build.gradle：
buildscript {
//统一制定版本
ext.kotlin_version = '1.4.31'
ext.google_service_version = '19.7.0'
ext.exoplayer_version = '2.13.2'
repositories {
//为当前的build.gradle设置依赖库中心
google()
jcenter()
}
dependencies {
//gradle版本
classpath "com.android.tools.build:gradle:4.0.1"
//kotlin依赖
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
//bintray.com maven的依赖
classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0"
//sonatype maven的依赖
classpath "com.github.dcendents:android-maven-gradle-plugin:1.5"
//黄油刀
classpath 'com.jakewharton:butterknife-gradle-plugin:10.2.3'
//谷歌服务
classpath 'com.google.gms:google-services:4.3.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
//jitpack库
maven { url 'http://www.jitpack.io' }
//bintray.com维护的Maven仓库
jcenter()
//谷歌maven库
maven { url "https://maven.google.com" }
google()
//阿里云镜像maven库地址
maven {
url "http://maven.aliyun.com/nexus/content/repositories/releases"
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}2.壳app模块的实现
//从项目的根目录中找到common.gradle
apply from: "${rootProject.rootDir}/common.gradle"
//project.ext则是之前强调的common.gradle中的对象，该对象有setAppDefaultConfig
project.ext.setAppDefaultConfig project
//由于setAppDefaultConfig中的android配置是通用配置，所以还需要针对壳本身新增配置
android {
//混淆规则配置
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
//nanohttpd轻量级数据库所需
exclude 'META-INF/nanohttpd/default-mimetypes.properties'
exclude 'META-INF/nanohttpd/mimetypes.properties'
//为了解决部分第三方库重复打包了META-INF的问题
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
//解决kotlin问题
exclude("META-INF/*.kotlin_module")
}
compileOptions {
sourceCompatibility = '1.8'
targetCompatibility = '1.8'
}
kotlinOptions {
jvmTarget = "1.8"
}
//在本地loacl.propreties中配置打包所需信息
Properties properties = new Properties()
InputStream inputStream = project.rootProject.file('local.properties').newDataInputStream()
properties.load(inputStream)
def sdkDir = properties.getProperty('key.file')
def keyFile = file(sdkDir)
def key_keyAlias = properties.getProperty('keyAlias')
def key_keyPassword = properties.getProperty('keyPassword')
def key_storePassword = properties.getProperty('storePassword')
signingConfigs {
release {
v2SigningEnabled true
}
debug {
storeFile file(keyFile)
storePassword key_storePassword
keyAlias key_keyAlias
keyPassword key_keyPassword
}
}
/*android.applicationVariants.all {
variant ->
variant.outputs.all {
output ->
outputFileName = new File("../version/", "XMediaTV_Android_" +
defaultConfig.versionName + "." + releaseTime() + "_" + variant.buildType.name + ".apk")
}
}*/
//android打包提示check release builds false
lintOptions {
checkReleaseBuilds false
abortOnError false
}
}
dependencies {
//壳工程所依赖的模块，implementation代表不依赖模块下的三分库
implementation project(path: ':mobile')
implementation project(path: ':tablet')
//api 代表依赖模块下所有的库
api project(path: ':common')
api project(path: ':firebase')
}
//设置仓库地址，用于辅助三方库依赖文件下载
repositories {
mavenCentral()
}3.底层模块的model配置
common中的gradle文件：
common模块本身就是为了通用，那么对于一些常用的库，则需要在该模块做一定的依赖处理，以下对不同模块功能依赖做出了标注
apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0.0"
//设置预览界面的库支持
vectorDrawables.useSupportLibrary = true
testInstrumentationRunner "androidx.tablet_test.runner.AndroidJUnitRunner"
//混淆文件指定
consumerProguardFiles "consumer-rules.pro"
//配合根目录的gradle.properties，代码中调用BuildConfig.SERVER_ADDRESS动态获取对应值，用于自动打包改服务地址
buildConfigField "String", "SERVER_ADDRESS", "\"${SERVER_ADDRESS}\""
buildConfigField "String", "TENANT_CODE", "\"${TENANT_CODE}\""
buildConfigField "String", "AD_SERVER_ADDRESS", "\"${AD_SERVER_ADDRESS}\""
buildConfigField "String", "PLAYER_SERVER_URI", "\"${PLAYER_SERVER_URI}\""
buildConfigField "Boolean", "FORCE_USE_TABLET", project.properties.get("FORCE_USE_TABLET")
}
//设置arouter模块名称
kapt {
arguments {
arg("AROUTER_MODULE_NAME", project.getName())
}
}
//资源前缀强制命名
resourcePrefix "common_"
//混淆模式
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
//用于换肤，让所有model都可以拥有不同类型的资源目录
sourceSets {
main {
res.srcDirs = ['src/main/res',
'src/main/res-light',
'src/main/res-news']
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
//》》》》kotlin
//kotlin核心库配置，对应根目录的build.gradle版本
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.3.2'
//kotlin协程库
api 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.3-native-mt'
api 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.3-native-mt'
//》》》》视图
//android视图库
api 'androidx.appcompat:appcompat:1.2.0'
api 'com.google.android.material:material:1.3.0'
api 'androidx.constraintlayout:constraintlayout:2.0.1'
api 'androidx.recyclerview:recyclerview:1.1.0'
//glide图片加载库
api 'com.github.bumptech.glide:glide:4.12.0'
//圆角的ImageView库
api 'com.makeramen:roundedimageview:2.3.0'
//recycleView的adapter库
api 'com.github.CymChad:BaseRecyclerViewAdapterHelper:3.0.4'
//下拉刷新库
implementation 'com.lcodecorex:tkrefreshlayout:1.0.7'
//头条的自适应库
api 'me.jessyan:autosize:1.2.1'
//换肤库
api 'skin.support:skin-support:4.0.5' // skin-support
api 'skin.support:skin-support-appcompat:4.0.5' // skin-support 基础控件支持
api 'skin.support:skin-support-design:4.0.5'
// skin-support-design material design 控件支持[可选]
api 'skin.support:skin-support-cardview:4.0.5'
// skin-support-cardview CardView 控件支持[可选]
api 'skin.support:skin-support-constraint-layout:4.0.5'
// skin-support-constraint-layout ConstraintLayout 控件支持[可选]
//本地资源库
api project(path: ':resource')
//》》》》网络
//用于retrofit2库依赖
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.9.0'
//用于retrofit2+kotlin+coroutines的回调库，可以直接加上suspend关键字获取到回调对象
implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'
//okhttp3库
implementation 'com.squareup.okhttp3:okhttp:5.0.0-alpha.2'
//gson解析库
implementation 'com.google.code.gson:gson:2.8.6'
//》》》》其余基本库
//郭霖的Litepal数据库
api 'org.litepal.guolindev:core:3.2.2'
//sharePreference库
api 'com.orhanobut:hawk:2.0.1'
//阿里的路由库
kapt 'com.alibaba:arouter-compiler:1.2.2'
api 'com.alibaba:arouter-api:1.5.0'
//谷歌的deeplink分享
implementation 'com.google.firebase:firebase-dynamic-links:19.1.0'
//--------------------------------------------------------------
//》》》》lifecycle库，用于liveData和viewModle，使用与mvvm框架
def lifecycle_version = '2.2.0'
// ViewModel and LiveData
api "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
// alternatively - just ViewModel
// api "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
api 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0'
// For Kotlin use lifecycle-viewmodel-ktx
// alternatively - just LiveData
// api "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
// 有生命周期感知的协程
api 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0'
}network中的gradle文件：
该模块为网络请求模块，用到的框架是retrofit2 + kotlin + coroutines，本质是请求耗时网络，通过kotlin使用coroutines的suspend挂起，来达到子线程请求，主线程接收数据的效果。
apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
compileSdkVersion 29
defaultConfig {
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0.0"
buildConfigField "String", "SERVER_ADDRESS", "\"${SERVER_ADDRESS}\""
buildConfigField "String", "TENANT_CODE", "\"${TENANT_CODE}\""
buildConfigField "String", "AD_SERVER_ADDRESS", "\"${AD_SERVER_ADDRESS}\""
buildConfigField "String", "PLAYER_SERVER_URI", "\"${PLAYER_SERVER_URI}\""
buildConfigField "Boolean", "FORCE_USE_TABLET", project.properties.get("FORCE_USE_TABLET")
}
resourcePrefix "network_"
buildTypes {
debug {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
release {
minifyEnabled true
}
}
compileOptions {
sourceCompatibility = '1.8'
targetCompatibility = '1.8'
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
//用于添加retrofit2拦截请求头用的
implementation 'com.squareup.okhttp3:logging-interceptor:4.8.1'
//Chuck辅助工具，用于打印各种http请求
debugImplementation 'com.readystatesoftware.chuck:library:1.1.0'
releaseImplementation 'com.readystatesoftware.chuck:library-no-op:1.1.0'
//--------------------------------------------------------------
api project(path: ':common')
implementation files('libs\\XMediaCryptoJar_HKSC.jar')
}resoure的gradle:
该Model主要是用于存放抽取的颜色、多语言、以及与app相关的图标、占位图等
apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
consumerProguardFiles "consumer-rules.pro"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
sourceSets {
main {
res.srcDirs = ['src/main/res',
'src/main/res-light',
'src/main/res-news']
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
//kotlin
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.3.2'
//单元测试库
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}基本模块配置都是作为library库使用，对于基本模块的内容有要求，就是一定是一项基础并且多模块共用的功能，才值得放在基础模块中。
4.功能模块或界面模块的依赖配置
对于模块依赖，只要弄清楚api和implementation的功能，并且清楚common.gradle，是如何使用的，就能很清晰的使用模块化项目开发。
apply from: "${rootProject.rootDir}/common.gradle"
//使用common.gradle中的公用配置
project.ext.setAppOrLibDefaultConfig project
android {
resourcePrefix "tablet_"
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
//这里统一依赖了network，network中由于是api common，common api resource，所以只需要implementation network就行
implementation project(path: ':network')
//统一依赖功能model,播放器、Firebase、支付
implementation project(path: ':player')
implementation project(path: ':firebase')
implementation project(path: ':pay')
//依赖了一个界面模块，含各种平板的弹窗界面和登录
implementation project(path: ':tablet_login')
//下拉刷新库
implementation 'com.lcodecorex:tkrefreshlayout:1.0.7'
//轮播图库
implementation 'com.github.zhpanvip:BannerViewPager:3.1.6'
//谷歌支付库
implementation 'com.android.billingclient:billing:2.1.0'
//依次是，谷歌消息、DeepLink、广告
implementation 'com.google.firebase:firebase-messaging:20.1.2'
implementation 'com.google.firebase:firebase-dynamic-links:19.1.0'
implementation "com.google.android.gms:play-services-ads:$google_service_version"
}模块内容
1.common
image-20210331093833739.png
base包：
存放着各种基类，其中主要的是MVVM，所以着重讲述MVVM框架搭建
ViewModel讲解：
首先，要继承ViewModel，导包，viewModel主要功能是，代替UI界面去做耗时操作，所以通过viewModelScope对象调用协程挂起，最终通过liveData绑定数据回调。
api "androidx.lifecycle:lifecycle-extensions:$lifecycle_version" //viewModel+livedata api 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0' //kotlin专用
由于ViewModel是配合Coroutine使用的，所以必需先认识CoroutineScope（协程范围）和withContext(Dispatchers.IO)中的Dispatchers模式，这里先讲Dispatchers的用途和具体场景。
image-20210331100456926.png
//实现LifecycleObserver接口，是为了通过activity的lifecycle.addObserver(LifecycleObserver) 绑定到生命周期中open class BaseViewModel : ViewModel(), LifecycleObserver {
//viewModelScope是ViewModel中的成员对象，该对象实现了CoroutineScope接口
//suspend CoroutineScope.() -> Unit, suspend是kotlin线程挂起的标识，实际上去走了await()方法
//CoroutineScope.() -> Unit 代表一个方法体，并且该方法体对象是CoroutineScope接口对象，主要是规范方法体类型，可除去CoroutineScope.
fun launchUI(block: suspend CoroutineScope.() -> Unit) = viewModelScope.launch {
try {
block()
} catch (e: Exception) {
e.printStackTrace()
}
}
//相比上个方法，主要是多了 withContext(Dispatchers.IO)，目的是切换到子线程做耗时操作
fun launchIO(block: suspend CoroutineScope.() -> Unit) = viewModelScope.launch {
withContext(Dispatchers.IO) {
try {
block()
} catch (e: Exception) {
e.printStackTrace()
}
}
}
//errorHandler 是为了统一处理网络异常
fun launchIO(
block: suspend CoroutineScope.() -> Unit,
errorHandler: (code: Int, message: String) -> Unit?,
) = viewModelScope.launch {
withContext(Dispatchers.IO) {
try {
if (NetWorkUtils.isNetConnect(CommonManager.context)) {
block()
} else {
errorHandler(300, "No internet connection")
}
} catch (e: Exception) {
handlerErrorCode(e, errorHandler)
e.printStackTrace()
}finally {
//....
}
}
}
private fun handlerErrorCode(
e: Exception,
errorHandler: (code: Int, message: String) -> Unit?,
) {
when (e) {
is HttpException -> {
errorHandler(e.code(), e.message())
}
is UnknownHostException -> {
errorHandler(404, "Unable to connect to server")
}
is SocketTimeoutException -> {
errorHandler(408, "Socket time out")//访问超时
}
is ConnectException -> {
errorHandler(404, "Connect exception")
}
is SocketException -> {
errorHandler(500, "Socket exception")
}
is EOFException -> {
errorHandler(500, "EOF exception") //连接意外中断
}
is IllegalArgumentException -> {
errorHandler(400, "Illegal argument exception")//参数错误
}
is SSLException -> {
errorHandler(401, "SSL exception")//证书错误
}
is NullPointerException -> {
errorHandler(600, "Null pointer exception")
}
else -> {
errorHandler(700, "Unknown exception")
}
}
}
fun Map<String, Any>.getBody(): RequestBody {
return Gson().toJson(this).toRequestBody("application/json".toMediaTypeOrNull())
}
data class ErrorHandler(val code: Int, val message: String)}BaseVMActivity讲解:
//持有俩个泛型，VM和DB，分别是BaseViewModel和ViewDataBinding的实现类abstract class BaseVMActivity<VM : BaseViewModel, DB : ViewDataBinding> : BaseActivity(){
//是否打印生命周期
var openLifecycle: Boolean = false
lateinit var viewModel: VM lateinit var dataBinding: DB
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
LogUtil.e(TAG, "onCreate", openLifecycle)
//绑定视图，获取到dataBinding
dataBinding = DataBindingUtil.setContentView(this, provideContentViewId())
tvTitle = dataBinding.root.findViewById(R.id.title)
back = dataBinding.root.findViewById(R.id.back)
//实例化ViewModel
viewModel = initVM()
//让viewModel关联生命周期
lifecycle.addObserver(viewModel)
//开始接口监听回调
startObserve()
}
abstract fun initVM(): VM abstract fun startObserve()
override fun onResume() {
super.onResume()
LogUtil.e(TAG, "onResume", openLifecycle)
}
override fun onPause() {
super.onPause()
LogUtil.e(TAG, "onPause", openLifecycle)
}
override fun onStart() {
super.onStart()
LogUtil.e(TAG, "onStart", openLifecycle)
}
override fun onRestart() {
super.onRestart()
LogUtil.e(TAG, "onRestart", openLifecycle)
}
override fun onStop() {
super.onStop()
LogUtil.e(TAG, "onStop", openLifecycle)
}
override fun onDestroy() {
super.onDestroy()
LogUtil.e(TAG, "onDestroy", openLifecycle)
}
//Arouter路由跳转封装， action代表Postcard方法体回调
fun open(path: String, requestCode: Int = 0, action: Postcard.() -> Unit = {}) {
val postcard = ARouter.getInstance().build(path)
postcard.action()
postcard.navigation(this, requestCode)
}
fun openWithFinish(path: String, action: Postcard.() -> Unit = {}) {
open(path, 0, action)
finish()
}}router包：
路由本意是，为了解决不同模块之间无法访问各自界面问题
路由指定，首先需要定义路径名，然后在对应的类中新增注解@Route(path = RouterPath.MOBILE_HOME)，之后通过Arouter的navigation()方法跳转到不同模块的界面，从而实现跨模块的跳转。
interface RouterPath {
companion object {
//mobile
const val MOBILE_HOME = "/mobile/home_activity"
const val MOBILE_SPLASH = "/mobile/splash"
const val MOBILE_VOD_DETAIL = "/mobile/vod_detail"
const val MOBILE_LIVE = "/mobile/live"
const val MOBILE_PAY = "/mobile/pay/activity"
const val MOBILE_EVENT = "/mobile/event"
//tablet
const val TABLET_HOME = "/tablet/home_activity"
const val TABLET_VOD_DETAIL = "/tablet/vod_detail"
const val TABLET_SPLASH = "/tablet/splash"
const val TABLET_EVENT = "/tablet/event"
const val PAY_ACTIVITY = "/pay/activity"
}}view包：
adapterItemDecoration是存放recycleview的装饰类ItemDecoration
viewExpand是存放所有视图相关的kotlin方法扩展，例如ImageView的加载图片封装
其余的则为view包中的一些常用的自定义view视图
2.network：
在了解network模块之前，必需对retrofit的使用由清晰的认识，所以接下来就看一个正常的retrofit是如何调用的。
调用库的依赖：
//retrofit核心库，这个在我们的common包中就有依赖 api 'com.squareup.retrofit2:retrofit:2.9.0' //加上这个之后，你可以省略输入流转Gson的步骤 api 'com.squareup.retrofit2:converter-gson:2.9.0' //使用之后，支持接口回调返回Deferred<T>对象，该对象是延迟结果发送的意思，可以使用suspend代替 api 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'
实现步骤：
//1.定义接口，并申明请求方式和对应的返回结果interface TestApi {
//get请求，（https://www.baidu.com/test/{body}）
@GET("/test/{body}")
fun getTest(@Path("test") body: String): Deferred<Test>}//2.使用retrofit初始化TestApi接口的实现对象val myTestApi by lazy {
val retrofit = retrofit2.Retrofit.Builder()
.baseUrl("https://www.baidu.com")
//添加Gson转换
.addConverterFactory(GsonConverterFactory.create())
//添加Deferred转换
.addCallAdapterFactory(CoroutineCallAdapterFactory())
.build()
//创建实现TestApi接口的MyTestApi对象，通过该对象就可以调用getTest()方法去走对应的网络请求
retrofit.create(MyTestApi::class.java)}//3.使用协程实现简洁回调//确保在UI线程中调用，当getTest方法执行后，回调用await()挂起，如果在方法中申明suspend，则可以省略，直接让getTest()返回TestGlobalScope.launch(Dispatchers.Main) {
try {
//回调UI线程中刷新界面数据
onResponseUI(myTestApi.getTest("test").await())
} catch (e: Exception) {
prink(e)
}}//4.搭配LiveData的进阶用法interface HistoryApi {
//用了post请求，并且加了suspend，直接让接口返回对象本身
@POST(AppConfig.BO_API + "/play/list")
suspend fun getPlayHistory(@Body body: RequestBody): WatchHistoryData}class HistoryViewModel : BaseViewModel() {
private var historyApi = NetWorkManager.historyApiSingleton //声明并初始化一个LiveData对象
var playHistoryData: MutableLiveData<WatchHistoryData> = MutableLiveData()
fun getPlayHistory(
page: Int = 0, pageSize: Int = 12, type: String = XMediaConst.CONTENT_TYPE_VOD ) = launchIO {
var parameter: HashMap<String, Any> = hashMapOf()
parameter["type"] = type
parameter["page"] = page
parameter["pageSize"] = pageSize //调用方法返回对象
val resultData = historyApi.getPlayHistory(parameter.getBody())
if (resultData.resultCode == 0)
//让liveData对象绑定接口返回对象值
playHistoryData.postValue(resultData)
}}//在starObserve中做回调监听，playHistoryData是一个liveData类型，当数据改变就会回调historyViewModel.run {
//this传的是一个lifecycleOwner对象，通常是activity或fragment持有
playHistoryData.observe(this@VodFragment) {
}}Network包中的组成：
image-20210331135936944.png
api包：存放所有网络请求接口API
interface HistoryApi {
//用了post请求，并且加了suspend，直接让接口返回对象本身
@POST(AppConfig.BO_API + "/play/list")
suspend fun getPlayHistory(@Body body: RequestBody): WatchHistoryData}bean包：存放Bean对象
data class WatchHistoryData( val contents: List<Content>, val description: String, val pageCount: Int, val resultCode: Int)
viewModel包：存放ViewModel实现类
NetworkManager: 用于retrofit网络请求头参数统一配置，retrofit的对象初始化，以及初始化viewModel实现类对象
// lazy默认模式就是同步锁，其余模式暂不展开val historyApiSingleton: HistoryApi by lazy(mode = LazyThreadSafetyMode.SYNCHRONIZED) {
retrofit.create(HistoryApi::class.java)
}val client = OkHttpClient.Builder()
//.cache(Cache(file, cacheSize))
.connectTimeout(DEFAULT_TIME, TimeUnit.SECONDS) //连接超时设置
.readTimeout(DEFAULT_TIME, TimeUnit.SECONDS) //读取超时设置
.writeTimeout(WRITE_TIME, TimeUnit.SECONDS) //写入超时设置
.addInterceptor(headInterceptor()) //请求头拦截
.addInterceptor(ChuckInterceptor(context)) //chunk工具类拦截
//.addNetworkInterceptor(responseCacheInterceptor()) //缓存拦截
.addInterceptor(HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY)) //提交和接收数据的拦截器
.build()var retrofit = Retrofit.Builder()
.baseUrl(AppConfig.SERVER_ROOT_URI)
.addConverterFactory(GsonConverterFactory.create()) //gson解析
.addCallAdapterFactory(RxJava2CallAdapterFactory.create()) //Rxjava
.addCallAdapterFactory(CoroutineCallAdapterFactory()) //协程Coroutine
.client(client)
.build()3.功能模块和界面模块
功能模块没什么好讲的，就是功能封装，调用方式也很简洁，而界面模块，主要描述一下MVVM的Activity是怎么实现的
//HomeViewModel，即我们之前将的ViewModel实现类， TabletActivityCategoryBinding则是系统通过xml自动生成的，具体请看下述的xmlclass TabletCategoryActivity : BaseVMActivity<HomeViewModel, TabletActivityCategoryBinding>() {
//分类内容列表，具体数据需要调网络请求接口获取
private var categoryContentList: MutableList<CategoryContentData.Content> = mutableListOf()
private var categoryAdapter: TabletCategoryAdapter? = null
companion object {
const val CATEGORY_ID = "category_id"
const val CATEGORY_TYPE = "category_type"
const val CATEGORY_TITLE = "category_title"
}
//HomeViewModel初始化，BaseVMActivity重写方法1
override fun initVM(): HomeViewModel = HomeViewModel()
//指定xml布局id，BaseVMActivity重写方法2
override fun provideContentViewId(): Int = R.layout.tablet_activity_category override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initRecyclerView()
initData()
}
private fun initData() {
//判断跳转前是否携带CATEGORY_ID参数
intent.getStringExtra(CATEGORY_ID)?.let {
if (it.isNotEmpty()) {
//调用getCategoryContentList()的网络请求接口
viewModel.getCategoryContentList(it)
}
}
//tv_title自动绑定视图 是在app/build.gradle 中开启了buildFeatures { dataBinding = true }
intent.getStringExtra(CATEGORY_TITLE)?.let {
tv_title.text = it }
}
//recyclerView的初始化
private fun initRecyclerView() {
categoryAdapter = TabletCategoryAdapter()
recycler_view.layoutManager = GridLayoutManager(this, 6)
recycler_view.addItemDecoration(
GridSpacingItemDecoration(
6, 6f.dpInt, false))
recycler_view.adapter = categoryAdapter
categoryAdapter?.setOnItemClickListener { _, _, position ->
TabletVodDetailsActivity.actionActivity(this,
categoryContentList[position].contentId,
0)
}
nav_back.setOnClickListener { finish() }
}
//监听viewModel实现类中的LiveData数据，BaseVMActivity重写方法3
override fun startObserve() {
viewModel.categoryContentListData.observe(this, { categoryContentData ->
//categoryContentData即网络请求结果对象
categoryContentData.contents.let {
if (it.isNotEmpty()) {
categoryContentList.addAll(it)
//刷新数据
categoryAdapter?.setList(it)
}
}
})
}}?xml version="1.0" encoding="utf-8"?><layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools"> <-- 生成TabletActivityCategoryBinding类的关键 --> <data> </data> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/theme_bg" android:fitsSystemWindows="true"> <ImageView android:id="@+id/nav_back" android:layout_width="32dp" android:layout_height="32dp" android:layout_marginStart="14dp" android:clickable="true" android:focusable="true" android:padding="8dp" android:src="@drawable/nav_back" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <TextView android:id="@+id/tv_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/main_text_color" android:textSize="24sp" app:layout_constraintBottom_toBottomOf="@id/nav_back" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="@id/nav_back" /> <androidx.recyclerview.widget.RecyclerView android:id="@+id/recycler_view" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginTop="34dp" app:layoutManager="androidx.recyclerview.widget.GridLayoutManager" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/nav_back" app:spanCount="6" tools:listitem="@layout/tablet_item_category_vertical" /> </androidx.constraintlayout.widget.ConstraintLayout></layout>
MVVM模式总结：
作者：孤縌
链接：https://www.jianshu.com/p/452c40b9a11c