改造2 OkHttpClient缓存不起作用 [英] Retrofit 2 OkHttpClient caching not working
本文介绍了改造2 OkHttpClient缓存不起作用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
所以这是问题所在，我正在尝试为我的应用程序实现缓存，我遵循了本教程
So here's the problem, I'm trying to implement caching for my app and I followed this tutorial Android: Cache network requests for offline access with Retrofit2 and OkHTTP3 to do it. Sadly, cached responses are not showing up when there is no internet connection, instead the
Toast.makeText(getContext()，getContext().getResources().getString(R.string.error_failed_to_load_posts)，Toast.LENGTH_SHORT).show();
Toast.makeText(getContext(), getContext().getResources().getString(R.string.error_failed_to_load_posts), Toast.LENGTH_SHORT).show();
被执行.那么谁能告诉我我做错了吗?还是指导我获得这个问题的答案?如果您有问题，我会在需要时发布其他信息.下面是特定功能的完整代码.
gets executed. So can anyone tell me what I am doing wrong? Or guide me to get an answer to this problem? I'll post additional info if needed if you ask me. Below is the entire code of the specific function.
private void loadHomeLoggedPosts(String uid) {
progressBar.setVisibility(View.VISIBLE);
OkHttpClient client = new OkHttpClient
.Builder()
.cache(new Cache(getContext().getCacheDir(), 10 * 1024 * 1024)) // 10 MB
.addInterceptor(new Interceptor() {
@Override public okhttp3.Response intercept(Chain chain) throws IOException {
Request request = chain.request();
if (Utils.isNetworkAvailable(getContext())) {
request = request.newBuilder().header("Cache-Control", "public, max-age=" + 60).build();
} else {
request = request.newBuilder().header("Cache-Control", "public, only-if-cached, max-stale=" + 60 * 60 * 24 * 7).build();
}
return chain.proceed(request);
}
})
.build();
Gson gson = new GsonBuilder()
.setLenient()
.create();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(getResources().getString(R.string.app_base_url))
.client(client)
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
RequestInterface request = retrofit.create(RequestInterface.class);
Call<Classes> call = request.homeLoggedPosts(uid);
call.enqueue(new Callback<Classes>() {
@Override
public void onResponse(Call<Classes> call, Response<Classes> response) {
Classes jsonResponse = response.body();
if (jsonResponse!=null) {
homePosts = jsonResponse.getHomePosts();
homeLoggedInAdapter = new HomeLoggedInAdapter(homePosts);
recyclerView.setAdapter(homeLoggedInAdapter);
homeLoggedInAdapter.notifyDataSetChanged();
}
else {
Toast.makeText(getContext(), getContext().getResources().getString(R.string.error_failed_to_load_posts), Toast.LENGTH_SHORT).show();
}
progressBar.setVisibility(View.INVISIBLE);
}
@Override
public void onFailure(Call<Classes> call, Throwable t) {
progressBar.setVisibility(View.INVISIBLE);
Toast.makeText(getContext(), getContext().getResources().getString(R.string.error_failed_to_load_posts), Toast.LENGTH_SHORT).show();
Log.d("ERROR", t.getMessage());
}
});
}
编辑:我在同一片段中有两个函数，调用方式如下:
I've two functions in the same fragment calling as follows:
if (FirebaseAuth.getInstance().getCurrentUser()!=null) {
loadHomeLoggedPosts(FirebaseAuth.getInstance().getCurrentUser().getUid());
}
else {
loadHomeNotLoggedPosts();
}
我已经在上面发布了loadHomeLoggedPosts的代码. loadHomeNotLoggedPosts相同，不同之处仅在于此部分:
I've posted the code for loadHomeLoggedPosts above. loadHomeNotLoggedPosts is the same with he difference being this section only:
RequestInterface request = retrofit.create(RequestInterface.class);
Call<Classes> call = request.homeNotLoggedPosts();
Farmaan Elahis的答案适用于loadHomeNotLoggedPosts，但不适用于loadHomeLoggedPosts.任何帮助都将受到高度赞赏.谢谢！
Farmaan Elahis' answer works for loadHomeNotLoggedPosts , but not for loadHomeLoggedPosts. Any help is highly appreciated. Thanks!
Okhttp日志:我已经编辑了一些部分，因为日志太大而无法在此处完整发布.
Okhttp log: I've edited out some portions as the log was too big to post here fully.
拳头启动:
08-27 18:35:29.426 32673-32673/com.appsoflife.microstories I/System.out: Cache CREATED!
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: --> POST http://my_web_site.com/jacob/micro_stories/queries/home_logged.php http/1.1
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: Content-Type: application/x-www-form-urlencoded
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: Content-Length: 32
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: uid=MY_USER_ID
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: --> END POST (32-byte body)
08-27 18:35:29.460 32673-2363/com.appsoflife.microstories D/AppTracker: App Event: start
08-27 18:35:29.502 32673-32673/com.appsoflife.microstories E/RecyclerView: No adapter attached; skipping layout
08-27 18:35:29.592 32673-32679/com.appsoflife.microstories I/art: Do partial code cache collection, code=27KB, data=30KB
08-27 18:35:29.593 32673-32679/com.appsoflife.microstories I/art: After code cache collection, code=26KB, data=29KB
08-27 18:35:29.593 32673-32679/com.appsoflife.microstories I/art: Increasing code cache capacity to 128KB
08-27 18:35:29.614 32673-32673/com.appsoflife.microstories W/PropertyValuesHolder: Method set() with type float not found on target class class me.zhanghai.android.materialprogressbar.IndeterminateHorizontalProgressDrawable$RectTransformX
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: <-- 200 OK http://my_web_site.com/jacob/micro_stories/queries/home_logged.php (3634ms)
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Date: Sun, 27 Aug 2017 13:05:29 GMT
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Server: Apache/2.4.25
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: X-Powered-By: PHP/5.6.30
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Vary: Accept-Encoding,User-Agent
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Keep-Alive: timeout=5
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Connection: Keep-Alive
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Transfer-Encoding: chunked
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Content-Type: text/html; charset=UTF-8
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Cache-Control: max-age=120
08-27 18:35:37.890 32673-2653/com.appsoflife.microstories I/FirebaseCrash: Sending crashes
08-27 18:35:41.664 32673-32695/com.appsoflife.microstories W/art: Suspending all threads took: 9.530ms
08-27 18:35:41.681 32673-2498/com.appsoflife.microstories D/OkHttp:
MY_JSON_OUTPUT_TOO_LONG_TO_POST
08-27 18:35:41.721 32673-2498/com.appsoflife.microstories D/OkHttp: <-- END HTTP (3297402-byte body)
第二时间:
08-27 18:37:35.904 5089-5089/com.appsoflife.microstories I/System.out: Cache CREATED!
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: --> POST http://my_web_site.com/jacob/micro_stories/queries/home_logged.php http/1.1
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: Content-Type: application/x-www-form-urlencoded
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: Content-Length: 32
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: uid=MY_USER_ID
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: --> END POST (32-byte body)
08-27 18:37:35.934 5089-5135/com.appsoflife.microstories D/AppTracker: App Event: start
08-27 18:37:35.979 5089-5089/com.appsoflife.microstories E/RecyclerView: No adapter attached; skipping layout
08-27 18:37:36.058 5089-5094/com.appsoflife.microstories I/art: Do partial code cache collection, code=26KB, data=30KB
08-27 18:37:36.058 5089-5094/com.appsoflife.microstories I/art: After code cache collection, code=25KB, data=29KB
08-27 18:37:36.058 5089-5094/com.appsoflife.microstories I/art: Increasing code cache capacity to 128KB
08-27 18:37:36.083 5089-5089/com.appsoflife.microstories W/PropertyValuesHolder: Method set() with type float not found on target class class me.zhanghai.android.materialprogressbar.IndeterminateHorizontalProgressDrawable$RectTransformX
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: <-- 200 OK http://my_web_site.com/jacob/micro_stories/queries/home_logged.php (3937ms)
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Date: Sun, 27 Aug 2017 13:07:36 GMT
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Server: Apache/2.4.25
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: X-Powered-By: PHP/5.6.30
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Vary: Accept-Encoding,User-Agent
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Keep-Alive: timeout=5
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Connection: Keep-Alive
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Transfer-Encoding: chunked
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Content-Type: text/html; charset=UTF-8
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Cache-Control: max-age=120
08-27 18:37:49.883 5089-5426/com.appsoflife.microstories I/FirebaseCrash: Sending crashes
08-27 18:37:51.044 5089-5190/com.appsoflife.microstories D/OkHttp:
JSON_OUTPUT_TOO_LONG_TO_POST
read: unexpected EOF!
推荐答案
您可以使用以下代码构建okhttp客户端，该客户端既可以具有有效期为2分钟的在线缓存，也可以具有可以有效期为7的离线缓存天.
You can use the below code to build you okhttp client which can have both online cache which is valid for 2 minutes as well as offline cache whcih is valid for 7 days.
PS:您需要考虑在未显示互联网异常的情况下首次打开该应用程序
PS: You need to consider opening the app for the first time with internet connected show that it doesn't throw exception
private static OkHttpClient provideOkHttpClient ()
{
return new OkHttpClient.Builder()
.addInterceptor( provideOfflineCacheInterceptor() )
.addNetworkInterceptor( provideCacheInterceptor() )
.cache( provideCache() )
.build();
}
private static Cache provideCache ()
{
Cache cache = null;
try
{
cache = new Cache( new File( getApplicationContext().getInstance().getCacheDir(), "http-cache" ),
10 * 1024 * 1024 ); // 10 MB
}
catch (Exception e)
{
Timber.e( e, "Could not create Cache!" );
}
return cache;
}
public static Interceptor provideCacheInterceptor ()
{
return new Interceptor()
{
@Override
public Response intercept (Chain chain) throws IOException
{
Response response = chain.proceed( chain.request() );
// re-write response header to force use of cache
CacheControl cacheControl = new CacheControl.Builder()
.maxAge( 2, TimeUnit.MINUTES )
.build();
return response.newBuilder()
.header( CACHE_CONTROL, cacheControl.toString() )
.build();
}
};
}
public static Interceptor provideOfflineCacheInterceptor ()
{
return new Interceptor()
{
@Override
public Response intercept (Chain chain) throws IOException
{
Request request = chain.request();
if ( !AndroidUtils.isNetworkAvailable() )
{
CacheControl cacheControl = new CacheControl.Builder()
.maxStale( 7, TimeUnit.DAYS )
.build();
request = request.newBuilder()
.cacheControl( cacheControl )
.build();
}
return chain.proceed( request );
}
};
}
这篇关于改造2 OkHttpClient缓存不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
