如何清除或操纵cache.db数据ios应用程序 [英] How to clear or manipulate cache.db data ios application

问题描述

我有一个iOS phonegap应用程序，通过https连接到服务器。在
（App_name）/ Library /（BundleId）/Cache.db（cfurl_cache_response）下存储了客户端想要删除的用户的一些信息。我已经修复了存储问题，但我想删除cache.db中的旧存储信息，当用户更新应用程序。这是可行的程序吗？

I have an iOS phonegap application that connects to a server via https. Under (App_name)/Library/(BundleId)/Cache.db (cfurl_cache_response) stored some info for users that the client wanted to delete. I have fixed the storing issue but i want to delete the old stored info in cache.db when users update the application. Is that feasible programmatically?

推荐答案

BOOL isNotFirstTimeRun = [[NSUserDefaults standardUserDefaults] boolForKey:@"isnotfirsttimerun"];
if (!isNotFirstTimeRun) {
    // Clear the cache if this is a first time run
    [[NSURLCache sharedURLCache] removeAllCachedResponses];
    // Set the flag to true and synchronize the user defaults
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setBool:YES forKey: @"isnotfirsttimerun"];
    [defaults synchronize];
}

在didFinishLaunchingWithOptions中为我完成了这项工作。

That did the job for me in didFinishLaunchingWithOptions.

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