Question

在解释这个问题之前，我想提一下我已经尝试过这些问题的解决方案：

Xcode not building app with changes incorporated
Why can't I delete files from my XCode project?
XCode simulator is not displaying latest changes

我已经存档我的应用程序，它现在已在App Store中提交，但现在我无法进行所需的更改以提供声音更新。该应用程序提供不同主题的统计数据，以及MLA / APA引用和该来源的Web视图。代码以这种方式构建：

TopicViewController.m为每个统计信息，引用和源URL保存NSString变量。与特定主题UIButtons相关的IBActions，例如Cybersecurity，设置每个NSString变量的内容。最后，我保存NSUserDefaults中所有统计数据，引用和URL的数据并同步它们。 这些信息是我添加新内容的位置。

示例代码（字符串的实际数量非常大）：

@implementation StatsViewController

NSString *cybersecStatistic1;
NSString *cybersecStatistic2;
NSString *cybersecStatistic3;
NSString *cybersecStatistic1CitationMLA;
NSString *cybersecStatistic1CitationAPA;
NSString *cybersecStatistic2CitationMLA;
NSString *cybersecStatistic2CitationAPA;
NSString *cybersecStatistic3CitationMLA;
NSString *cybersecStatistic3CitationAPA;
NSString *cybersecStatistic1Source;
NSString *cybersecStatistic2Source;
NSString *cybersecStatistic3Source;

-(IBAction)cybersecurityGo:(id)sender {
    cybersecStatistic1 = @"\"In 2015, nearly 20% of global companies implemented a cybersecurity budget between $1 million and $4.9 million.\" (PricewaterhouseCoopers survey)";
    cybersecStatistic2 = @"The average annual number of cybersecurity incidents is 80-90 million. There was a 38% increase in such incidents from 2014-2015.";
    cybersecStatistic3 = @"USA: Over 36% of people who share passwords have shared the password associated with their banking account.";

    cybersecStatistic1CitationAPA = @"Penguin Strategies. (2016, January 17). Top Cybersecurity Statistics for 2016 - Cyber Security Marketing Blog. Retrieved April 16, 2016, from http://www.marketingcyber.com/2016-cybersecurity-statistics/";
    cybersecStatistic2CitationAPA = @"Smith, C. (2016, January 20). 34 Amazing Cybersecurity Statistics. Retrieved April 16, 2016, from http://expandedramblings.com/index.php/cybersecurity-statistics/";
    cybersecStatistic3CitationAPA = @"Norton by Symantec. (1995-2016). Norton Cybersecurity Insights Report. Retrieved April 16, 2016, from https://us.norton.com/cyber-security-insights";

    cybersecStatistic1CitationMLA = @"\"Top Cybersecurity Statistics for 2016 - Cyber Security Marketing Blog.\"Cyber Security Marketing Blog. Penguin Strategies, 17 Jan. 2016. Web. 16 Apr. 2016.";
    cybersecStatistic2CitationMLA = @"Smith, Craig. \"34 Amazing Cybersecurity Statistics.\" DMR. DMR, 20 Jan. 2016. Web. 16 Apr. 2016.";
    cybersecStatistic3CitationMLA = @"\"Norton Cybersecurity Insights Report.\" 2016. Norton by Symantec, 1995-2016. Web. 16 Apr. 2016.";

    cybersecStatistic1Source = @"http://www.marketingcyber.com/2016-cybersecurity-statistics/";
    cybersecStatistic2Source = @"http://expandedramblings.com/index.php/cybersecurity-statistics/";
    cybersecStatistic3Source = @"https://us.norton.com/cyber-security-insights";

    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic1 forKey:@"statistic1"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic2 forKey:@"statistic2"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic3 forKey:@"statistic3"];
    [[NSUserDefaults standardUserDefaults] synchronize];

    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic1CitationMLA forKey:@"statistic1CitationMLA"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic1CitationAPA forKey:@"statistic1CitationAPA"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic2CitationMLA forKey:@"statistic2CitationMLA"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic2CitationAPA forKey:@"statistic2CitationAPA"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic3CitationMLA forKey:@"statistic3CitationMLA"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic3CitationAPA forKey:@"statistic3CitationAPA"];
    [[NSUserDefaults standardUserDefaults] synchronize];

    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic1Source forKey:@"statistic1Source"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic2Source forKey:@"statistic2Source"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [[NSUserDefaults standardUserDefaults] setObject: cybersecStatistic3Source forKey:@"statistic3Source"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

点击主题按钮可转到下一个屏幕StatsViewController。它的实现文件接收NSUserDefaults并显示相应的统计信息。与每个统计UIButton相关的IBActions为下一个屏幕设置“路线”以显示正确的引用。这是因为有些事情发生错误，因为我所查看的最新状态显示的引用（从未添加新的陈述引文） - ＆gt;我之前通过将我的ViewDidLoad更改为CitationViewController中的ViewWillLayoutSubviews来修复此问题，我将在下面解释。

@implementation StatsViewController

NSString *whichStat;

NSString *strStat1;
NSString *strStat2;
NSString *strStat3;

-(IBAction)stat1Go:(id)sender {
    whichStat = @"stat1Route";
    [[NSUserDefaults standardUserDefaults] setObject:whichStat forKey:@"activeStat"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}
-(IBAction)stat2Go:(id)sender {
    whichStat = @"stat2Route";
    [[NSUserDefaults standardUserDefaults] setObject:whichStat forKey:@"activeStat"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}
-(IBAction)stat3Go:(id)sender {
    whichStat = @"stat3Route";
    [[NSUserDefaults standardUserDefaults] setObject:whichStat forKey:@"activeStat"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

-(void)viewWillAppear:(BOOL)animated {

    whichStat = nil;
    strStat1 = nil;
    strStat2 = nil;
    strStat3 = nil;

    strStat1 = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic1"];
    strStat2 = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic2"];
    strStat3 = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic3"];

    [_stat1 setTitle:strStat1 forState:UIControlStateNormal];
    [_stat2 setTitle:strStat2 forState:UIControlStateNormal];
    [_stat3 setTitle:strStat3 forState:UIControlStateNormal];

    if ([strStat1  isEqual: @"more stats to come"]) {
        _stat1.enabled = false;
    }
    else {
        _stat1.enabled = true;
    }
    if ([strStat2  isEqual: @"more stats to come"]) {
        _stat2.enabled = false;
    }
    else {
        _stat2.enabled = true;
    }
    if ([strStat3  isEqual: @"more stats to come"]) {
        _stat3.enabled = false;
    }
    else {
        _stat3.enabled = true;
    }

点击统计按钮会转到CitationViewController，它会显示APA和MLA引文。 新添加字符串的引用（自应用程序商店提交）未正确加载 ViewWillLayoutSubviews。

@implementation CiteViewController

NSString *citeStatPath;

NSString *citeUsingMLA;
NSString *citeUsingAPA;

NSString *sourceWebSite;

-(void)viewWillLayoutSubviews {

citeStatPath = [[NSUserDefaults standardUserDefaults] stringForKey:@"activeStat"];

    if ([citeStatPath  isEqualToString: @"stat1Route"]) {
        citeUsingMLA = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic1CitationMLA"];
        citeUsingAPA = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic1CitationAPA"];

        [_citeMLA setTitle:citeUsingMLA forState:UIControlStateNormal];
        [_citeAPA setTitle:citeUsingAPA forState:UIControlStateNormal];
    }
    else if ([citeStatPath isEqualToString:@"stat2Route"]) {
        citeUsingMLA = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic2CitationMLA"];
        citeUsingAPA = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic2CitationAPA"];

        [_citeMLA setTitle:citeUsingMLA forState:UIControlStateNormal];
        [_citeAPA setTitle:citeUsingAPA forState:UIControlStateNormal];
    }
    else {
        citeUsingMLA = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic3CitationMLA"];
        citeUsingAPA = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic3CitationAPA"];

        [_citeMLA setTitle:citeUsingMLA forState:UIControlStateNormal];
        [_citeAPA setTitle:citeUsingAPA forState:UIControlStateNormal];
    }
}

点击引文按钮会转到UIWebView，它从NSUserDefault获取URL并建立并保存在TopicViewController.m中。 正确的网站也没有出现。

@implementation SourceViewController

NSString *srcStatPath;

NSString *webSite;

-(void)viewWillAppear:(BOOL)animated {

    srcStatPath = [[NSUserDefaults standardUserDefaults] stringForKey:@"activeStat"];

    if ([srcStatPath  isEqualToString: @"stat1Route"]) {
        webSite = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic1Source"];
    }
    else if ([srcStatPath isEqualToString:@"stat2Route"]) {
        webSite = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic2Source"];
    }
    else {
        webSite = [[NSUserDefaults standardUserDefaults] stringForKey:@"statistic3Source"];
    }

NSURL *url = [NSURL URLWithString:webSite];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [_source loadRequest:request];
}

在iPhone模拟器和我自己的iOS设备（iPhone 6-版本9.3.2）上会出现此问题。

提前感谢您的帮助。我很卡住了！

NSUserDefauts - 只有新的NSStrings没有出现在应用

0 个答案: