🐷 kotlin mvp框架的封装, 1.Rxjava2采用了背压和非背压, 2.实体类采用了泛型和继承两种 3.比大部分作者的框架封装和使用都简单高效
interface IBaseView {//可根据实际情况增加一些方法
/**
* 加载中
*/
fun showLoading()
/**
* 取消加载中
*/
fun dismissLoading()
/**
* 显示错误提示
*/
fun showErrorMsg(msg: String)
}
interface IBasePresenter<in V : IBaseView> {
fun attachView(view: V)
fun detachView()
}
open class BaseRxPresenter<V : IBaseView> : IBasePresenter<V> {
var mView: V? = null
private set
private var compositeDisposable: CompositeDisposable? = null
fun addSubscription(disposable: Disposable) {
if (compositeDisposable == null) {
compositeDisposable = CompositeDisposable()
}
compositeDisposable!!.add(disposable)
}
override fun attachView(view: V) {
this.mView = view
}
override fun detachView() {
mView = null
if (!compositeDisposable!!.isDisposed) {
compositeDisposable!!.clear()
}
}
}/**
*创建人:雷富
*创建时间:2019/6/5 16:16
*描述:
*/
abstract class BaseMvpActivity<in V : IBaseView, P : IBasePresenter<V>> : BaseActivity(), IBaseView {
var mPresenter: P? = null
override fun initView(savedInstanceState: Bundle?) {
super.initView(savedInstanceState)
mPresenter = createPresenter()
if (mPresenter != null) {
mPresenter!!.attachView(this as V)
}
}
/**
* 释放一些资源
*/
override fun onDestroy() {
super.onDestroy()
mPresenter?.detachView()
}
/**
* 加载中
*/
override fun showLoading() {
LoadingUtil.showLoading(mActivity, "加载中...")
}
/**
* 取消加载
*/
override fun dismissLoading() {
LoadingUtil.dismissLoading()
}
/**
* 显示错误提示
*/
override fun showErrorMsg(msg: String) {
Toast.makeText(mContext, msg, Toast.LENGTH_LONG).show()
}
/**
* 请求网络数据
*/
abstract fun startNetwork()
/**
* 创建Presenter
*/
abstract fun createPresenter(): P
}/**
*创建人:雷富
*创建时间:2019/6/5 17:24
*描述:
*/
object RetrofitManager {
val apiService: ApiService by lazy {
getRetrofit().create(ApiService::class.java)
}
private fun getRetrofit(): Retrofit {
// 获取retrofit的实例
return Retrofit.Builder()
.baseUrl(UrlConstant.BASE_URL) //自己配置
.client(getOkHttpClient())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build()
}
private fun getOkHttpClient(): OkHttpClient {
//添加一个log拦截器,打印所有的log
val httpLoggingInterceptor =
HttpLoggingInterceptor(HttpLoggingInterceptor.Logger { message: String? -> Log.e("okhttp", message) })
//可以设置请求过滤的水平,body,basic,headers
httpLoggingInterceptor.level = HttpLoggingInterceptor.Level.BODY
//设置 请求的缓存的大小跟位置
val cacheFile = File(MyApp.context.cacheDir, "cache")
val cache = Cache(cacheFile, 1024 * 1024 * 50) //50Mb 缓存的大小
return OkHttpClient.Builder()
// .addInterceptor(addQueryParameterInterceptor()) //参数添加
// .addInterceptor(addHeaderInterceptor()) // token过滤
.addInterceptor(httpLoggingInterceptor) //日志,所有的请求响应度看到
// .addNetworkInterceptor(addCacheInterceptor())// 添加缓存
// .addInterceptor(addCacheInterceptor())// 添加缓存
.cache(cache) //添加缓存
.connectTimeout(60L, TimeUnit.SECONDS)
.readTimeout(60L, TimeUnit.SECONDS)
.writeTimeout(60L, TimeUnit.SECONDS)
.build()
}
/**
* 设置公共参数
*/
private fun addQueryParameterInterceptor(): Interceptor {
return Interceptor { chain ->
val originalRequest = chain.request()
val request: Request
val modifiedUrl = originalRequest.url().newBuilder()
// Provide your custom parameter here
.addQueryParameter("udid", "d2807c895f0348a180148c9dfa6f2feeac0781b5")
.addQueryParameter("deviceModel", "")
.build()
request = originalRequest.newBuilder().url(modifiedUrl).build()
chain.proceed(request)
}
}
/**
* 设置头
*/
private fun addHeaderInterceptor(): Interceptor {
return Interceptor { chain ->
val originalRequest = chain.request()
val requestBuilder = originalRequest.newBuilder()
// Provide your custom header here
// .header("token", token)
.method(originalRequest.method(), originalRequest.body())
val request = requestBuilder.build()
chain.proceed(request)
}
}
/**
* 设置缓存
*/
private fun addCacheInterceptor(): Interceptor {
return Interceptor { chain ->
var request = chain.request()
if (!NetworkUtil.isConnected()) {
request = request.newBuilder()
.cacheControl(CacheControl.FORCE_CACHE)
.build()
}
val response = chain.proceed(request)
if (NetworkUtil.isConnected()) {
val maxAge = 0
// 有网络时 设置缓存超时时间0个小时 ,意思就是不读取缓存数据,只对get有用,post没有缓冲
response.newBuilder()
.header("Cache-Control", "public, max-age=" + maxAge)
.removeHeader("Retrofit")// 清除头信息，因为服务器如果不支持，会返回一些干扰信息，不清除下面无法生效
.build()
} else {
// 无网络时，设置超时为4周 只对get有用,post没有缓冲
val maxStale = 60 * 60 * 24 * 28
response.newBuilder()
.header("Cache-Control", "public, only-if-cached, max-stale=" + maxStale)
.removeHeader("nyn")
.build()
}
response
}
}
}/**
* 创建人:雷富
* 创建时间:2018/7/30 17:38
* 描述: 2016/8/3.
* 统一线程处理
*虽然在Rxjava2中，Flowable是在Observable的基础上优化后的产物，Observable能解决的问题Flowable也都能解决，但是并不代表Flowable可以完全取代Observable,在使用的过程中，并不能抛弃Observable而只用Flowable。
*由于基于Flowable发射的数据流，以及对数据加工处理的各操作符都添加了背压支持，附加了额外的逻辑，其运行效率要比Observable慢得多。
*只有在需要处理背压问题时，才需要使用Flowable。
*/
object RxManage {
/**
* compose简化线程切换
* @param <T>
* @return
</T> */
fun <T> rxSchedulerObservableHelper(): ObservableTransformer<T, T> {
return ObservableTransformer { observable ->
observable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
}
}
/**
* compose简化线程切换
* @param <T>
* @return
</T> */
fun <T> rxSchedulerFlowableHelper(): FlowableTransformer<T, T> {
return FlowableTransformer { observable ->
observable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
}
}
/**
*compose判断结果,统一返回结果处理,支持背压
* @param <T>
* @return
</T> */
fun <T> handleObservableResult(): ObservableTransformer<T, T> {
return ObservableTransformer { observable ->
observable.flatMap(Function<T, Observable<T>> { bean ->
val baseBean = bean as BaseBean
if (baseBean.code == 200) {//{"code":200,"msg":"成功!","data":{"appId":"com.chat.peakchao","appkey":"00d91e8e0cca2b76f515926a36db68f5"}}
createObservable(bean)
} else {
Observable.error(ApiException(baseBean.msg))
}
})
}
}
/**
*compose判断结果,统一返回结果处理,支持背压
* @param <T>
* @return
</T> */
fun <T> handleFlowableResult(): FlowableTransformer<T, T> {
return FlowableTransformer { flowable ->
flowable.flatMap(Function<T, Flowable<T>> { bean ->
val baseBean = bean as BaseBean
if (baseBean.code == 200) {
createFlowable(bean)
} else {
Flowable.error(ApiException(baseBean.msg))
}
})
}
}
/**
*不通过继承,通过泛型实现实体类
* @param <T>
* @return
</T> */
fun <T> handleFlowableResult2(): FlowableTransformer<BaseResponseBean<T>, T> {
return FlowableTransformer { flowable ->
flowable.flatMap { bean ->
if (bean.code == 200) {
createFlowable(bean.data)
} else {
Flowable.error(ApiException(bean.msg))
}
}
}
}
/**
* 生成Observable,不支持背压
* @param <T>
* @return
</T> */
private fun <T> createObservable(t: T): Observable<T> {
return Observable.create { emitter ->
try {
emitter.onNext(t)
emitter.onComplete()
} catch (e: Exception) {
emitter.onError(e)
}
}
}
/**
* 生成Flowable,支持背压
* @param <T>
* @return
</T> */
private fun <T> createFlowable(t: T): Flowable<T> {
return Flowable.create({ emitter ->
try {
emitter.onNext(t)
emitter.onComplete()
} catch (e: Exception) {
emitter.onError(e)
}
}, BackpressureStrategy.BUFFER)
}
}package com.leifu.mvpkotlin.net.except
import android.util.Log
import com.google.gson.JsonParseException
import com.leifu.mvpkotlin.base.IBaseView
import org.json.JSONException
import retrofit2.HttpException
import java.net.ConnectException
import java.net.SocketTimeoutException
import java.net.UnknownHostException
import java.text.ParseException
/**
* desc: 异常处理类
*/
class ExceptionHandle {
companion object {
var errorMsg = "请求失败，请稍后重试"
fun handleException(e: Throwable, mView: IBaseView): String {
e.printStackTrace()
if (e is ApiException) {
errorMsg = e.message.toString()
} else if (e is HttpException) {
if (e.code() == 403) {//可以处理一些退出登录逻辑,可以自己修改
mView.showErrorMsg("请重新登录")
}
} else if (e is SocketTimeoutException) {//网络超时
errorMsg = "网络连接异常"
} else if (e is ConnectException) { //均视为网络错误
errorMsg = "网络连接异常"
} else if (e is JsonParseException || e is JSONException || e is ParseException) { //均视为解析错误
Log.e("TAG", "数据解析异常: " + e.message)
errorMsg = "数据解析异常"
} else if (e is UnknownHostException) {
errorMsg = "网络连接异常"
} else if (e is IllegalArgumentException) {
errorMsg = "参数错误"
} else {//未知错误
Log.e("TAG", "未知错误Debug调试: " + e.message)
errorMsg = "未知错误，可能抛锚了吧~"
}
Log.e("TAG", "错误调试: " + e.message)
// Toast.makeText(MyApp.context, errorMsg, Toast.LENGTH_LONG).show()
mView.showErrorMsg(errorMsg)
return errorMsg
}
}
}package com.leifu.mvpkotlin.presenter
import com.leifu.mvpkotlin.base.BaseRxPresenter
import com.leifu.mvpkotlin.bean.ObjectBean
import com.leifu.mvpkotlin.net.except.ExceptionHandle
import com.leifu.mvpkotlin.net.rx.RetrofitManager
import com.leifu.mvpkotlin.net.rx.RxManage
import com.leifu.mvpkotlin.presenter.contract.ObservableContract
/**
*创建人:雷富
*创建时间:2019/6/6 13:57
*描述:
*/
class ObservablePresenter : BaseRxPresenter<ObservableContract.View>(), ObservableContract.Presenter {
override fun getObjectData() {
mView?.showLoading()
addSubscription(
RetrofitManager.apiService.getObservableObjectData()
.compose(RxManage.rxSchedulerObservableHelper())
.compose(RxManage.handleObservableResult<ObjectBean>())
.subscribe({
run { ->
mView?.showObjectData(it)
mView?.dismissLoading()
}
},
{ t ->
mView?.dismissLoading()
mView?.let { ExceptionHandle.handleException(t, it) }
})
)
}
}