文章转载自BunToy;
在开发BunToy本体过程中发现以前使用的Rxjava使用引起的内存泄漏,回顾项目解决,就实践一下;
添加依赖
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| compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.8.0'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'com.trello.rxlifecycle2:rxlifecycle-components:2.1.0'
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- 使用RxLifeCycle是因为在使用Rxjava的过程中,当发布一个订阅后,页面被finsh,此时订阅的逻辑还没完成,容易引发内存泄漏的问题.
基础类
在BaseActivity中继承RxAppCompatActivity
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| public class BaseActivity extends RxAppCompatActivity {
}
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在BasePresenter中写拿到LifecycleProvider的方法,方便后边的RetrofitService设置手动关闭订阅.
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| public class BasePresenter {
private LifecycleProvider<ActivityEvent> provider;
public BasePresenter(LifecycleProvider<ActivityEvent> provider) {
this.provider = provider;
}
public LifecycleProvider<ActivityEvent> getProvider() {
return provider;
}
}
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- 当我们在activity中初始化presenter的时候,由于activity继承的RxAppCompatActivity,只需要传this就可以把LifecycleProvider传过来了.
使用mvp,需要新建抽象类BaseView
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| public interface BaseView {
/**
* 显示Loading
*/
void showProgressDialog();
/**
* 隐藏Loading
*/
void hideProgressDialog();
/**
* 显示错误信息
*
* @param msg 错误信息
*/
void showError(String msg);
}
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接口地址类和请求参数接口类
新建接口地址类Constant
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| public class Constant {
/**
* 服务器地址(基类地址)
*/
public static final String SERVER_URL = "http://www.kuaidi100.com/";
/**
* 接口请求地址
*/
public static class UrlOrigin {
//--------------------------------------------------
//拼接的尾部地址都写下边
/**
* 获取快递信息
*/
public static final String get_express_info = "query";
}
}
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新建请求参数接口类RetrofitService
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| public interface RetrofitService {
/**
* 获取快递信息
* Rx方式
* @return Observable<ExpressInfo>
*/
@GET(Constant.UrlOrigin.get_express_info)
Observable<ExpressInfo> getExpressInfoRx(@QueryMap Map<String,String> map);
}
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注意: @GET(Constant.UrlOrigin.get_express_info)括号中的参数为Constant的尾部地址”query”.
Retrofit工具类
新建RetrofitHelper
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| public class RetrofitHelper {
private static RetrofitHelper retrofitHelper;
private RetrofitService retrofitService;
public static RetrofitHelper getInstance() {
return retrofitHelper == null ? retrofitHelper = new RetrofitHelper() : retrofitHelper;
}
private RetrofitHelper() {
// 初始化Retrofit
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Constant.SERVER_URL)
.addConverterFactory(GsonConverterFactory.create()) // json解析
.addCallAdapterFactory(RxJava2CallAdapterFactory.create()) // 支持RxJava
.client(RetrofitUtils.getOkHttpClient()) //打印请求参数
.build();
retrofitService = retrofit.create(RetrofitService.class);
}
public RetrofitService getRetrofitService() {
return retrofitService;
}
}
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新建DataManager
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| public class DataManager {
private static DataManager dataManager;
private RetrofitService retrofitService;
public static DataManager getInstance() {
return dataManager == null ? dataManager = new DataManager() : dataManager;
}
/**
* 初始化Retrofit,拿到RetrofitService
*/
private DataManager() {
retrofitService = RetrofitHelper.getInstance().getRetrofitService();
}
//---------------------------------------------------------
//从下边开始,就是各个接口的请求
/**
* 获取快递信息
* @return Observable<ExpressInfo>
*/
public Observable<ExpressInfo> getExpressInfo(Map<String,String> map) {
return retrofitService.getExpressInfoRx(map);
}
}
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在DataManager中初始化RetrofitHelper,并通过RetrofitHelper重的getRetrofitService()方法拿到RetrofitService.
然后在DataManager中做网络请求,返回拿到的javabean,如上面代码中的getExpressInfo()方法.
本文的demo地址:http://download.csdn.net/download/huchengzhiqiang/10032097
参考地址：https://blog.csdn.net/huchengzhiqiang/article/details/78296892
