RetrofitCache
RetrofitCache让retrofit2+okhttp3+rxjava 配置缓存如此简单。通过注解配置，可以针对每一个接口灵活配置缓存策略；同时让每一个接口方便支持数据模拟，可以代码减小侵入性，模拟数据可以从内存，Assets，url轻松获取。
为什么使用RetrofitCache
- 服务端接口不严格按照http缓存策略配置，有些不会针对每一个请求单独配置缓存策略
- 第三方缓存库不是很方便的针对每一个接口进行缓存策略配置，侵入性比较大
- 很方便的针对每个接口添加模拟数据
调用例子
- 不走缓存例子
@GET("users")
Observable<HttpResult> test();
- 缓存设置为20秒
@Cache(time = 20)
@GET("users")
Observable<HttpResult> test();
- 缓存设置为20分钟
@Cache(time = 20,timeUnit = TimeUnit.MINUTES)
@GET("users")
Observable<HttpResult> test();
- 默认时间缓存,默认是0秒
@Cache()
@GET("users")
Observable<HttpResult> test();
- 默认在无网的时候强制走缓存，forceCacheNoNet=false时无网络时不强制缓存
@Cache(forceCacheNoNet = false)
@GET("users")
Observable<HttpResult> test();
- 添加模拟数据（value,assets,url同时都配置的话，就按照这个顺序处理）
@Mock(value = "{\"data\":\"mockdata\"}") //模拟内存数据
@GET("users")
Observable<HttpResult> test();
@Mock(assets = "mock/mock.json") //从assets获取模拟数据
@GET("users")
Observable<HttpResult> test();
@Mock(url = "http://url.com/test") //从新的url请求数据
@GET("users")
Observable<HttpResult> test();
缓存只对http Get请求有效；如果要问为什么，可以问问后台开发同学
使用方法:
- 添加 jcenter lib,注意根据自己的库选择
compile 'ren.yale.android:retrofitcachelib:1.1.1' //retrofit2+okhttp3+rxjava1
compile 'ren.yale.android:retrofitcachelibrx2:1.1.1' //retrofit2+okhttp3+rxjava2
- 在Android Application里初始化
RetrofitCache.getInstance().init(this);
也可以修改默认配置，默认time=0，timeUnit = TimeUnit.SECONDS
RetrofitCache.getInstance().init(this).setDefaultTimeUnit(TimeUnit.MINUTES).setDefaultTime(1);
- OkHttpClient初始化时配置缓存目录
okhttp3.OkHttpClient.Builder clientBuilder=new okhttp3.OkHttpClient.Builder();
...
int cacheSize = 200 * 1024 * 1024;
File cacheDirectory = new File(mContext.getCacheDir(), "httpcache");
Cache cache = new Cache(cacheDirectory, cacheSize);
OkHttpClient client = clientBuilder.cache(cache).build();
...
- 给okhttp添加拦截器
okhttp3.OkHttpClient.Builder clientBuilder=new okhttp3.OkHttpClient.Builder();
...
//clientBuilder.addInterceptor(new MockInterceptor()); //如果只用Mock模拟功能,只需添加这个拦截器
clientBuilder.addInterceptor(new CacheForceInterceptorNoNet());
clientBuilder.addNetworkInterceptor(new CacheInterceptorOnNet());
...
添加CacheForceInterceptorNoNet作用是在无网时强制走缓存,如果只添加了CacheInterceptorOnNet,那么在有网和无网的缓存策略就会一样
- 添加retrofit对象
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(url)
.client(getOkHttpClient())
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.build();
RetrofitCache.getInatance().addRetrofit(retrofit);
- 添加 rx Observable compose
api.test().compose(CacheTransformer.emptyTransformer())...
进阶
- setCacheInterceptorListener 设置是否每一个接口都缓存
RetrofitCache.getInstance().setCacheInterceptorListener(
new CacheInterceptorListener() {
@Override
public boolean canCache(Request request,Response response) {
String res = "";
try {
res = response.body().string();
} catch (IOException e) {
e.printStackTrace();
}
return true;
}
});
- 设置是否走模拟数据,比如说在正式接口好了后可以如下设置，让模拟数据失效
RetrofitCache.getInstance().enableMock(false);
- 忽略某个参数;如果你对原url增加参数，可以设置忽略
RetrofitCache.getInstance().addIgnoreParam("access_token");
混淆配置（retrofit2+okhttp3+rxjava1）
-dontwarn ren.yale.android.retrofitcachelib.**
-keep class ren.yale.android.retrofitcachelib.** { *; }
-keepclasseswithmembernames class rx.Observable { *; }
-keepclasseswithmembernames class rx.internal.operators.OnSubscribeLift { *; }
-keepclasseswithmembernames class retrofit2.adapter.rxjava.RxJavaCallAdapterFactory { *; }
-keepclasseswithmembernames class retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe { *; }
-keepclasseswithmembernames class retrofit2.Retrofit { *; }
-keepclasseswithmembernames class retrofit2.ServiceMethod { *; }
-keepclasseswithmembernames class retrofit2.OkHttpCall { *; }
###retrofit2 2.5.0
-keepclasseswithmembernames class retrofit2.HttpServiceMethod {*;}
-keepclasseswithmembernames class retrofit2.RequestFactory {*;}
#retrofit2,okhttp3,rxjava1等其它混淆配置请自行添加
混淆配置（retrofit2+okhttp3+rxjava2）
-dontwarn ren.yale.android.retrofitcachelibrx2.**
-keep class ren.yale.android.retrofitcachelibrx2.** { *; }
-keepclasseswithmembernames class retrofit2.adapter.rxjava2.BodyObservable { *; }
-keepclasseswithmembernames class retrofit2.adapter.rxjava2.ResultObservable { *; }
-keepclasseswithmembernames class retrofit2.adapter.rxjava2.CallEnqueueObservable { *; }
-keepclasseswithmembernames class retrofit2.adapter.rxjava2.CallExecuteObservable { *; }
-keepclasseswithmembernames class retrofit2.Retrofit { *; }
-keepclasseswithmembernames class retrofit2.ServiceMethod { *; }
-keepclasseswithmembernames class retrofit2.OkHttpCall { *; }
###retrofit2 2.5.0
-keepclasseswithmembernames class retrofit2.HttpServiceMethod {*;}
-keepclasseswithmembernames class retrofit2.RequestFactory {*;}
#retrofit2,okhttp3,rxjava2等其它混淆配置请自行添加
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