- (BOOL)saveCredentials:(NSError **)error {
SSKeychainQuery *query = [[SSKeychainQuery alloc] init];
query.password = @"MySecretPassword";
query.service = @"MyAwesomeService";
query.account = @"John Doe";
query.synchronizable = YES;
return [query save:&error];
}
- (NSString *)savedPassword:(NSError **)error {
SSKeychainQuery *query = [[SSKeychainQuery alloc] init];
query.service = @"MyAwesomeService";
query.account = @"John Doe";
query.synchronizable = YES;
query.password = nil;
if ([query fetch:&error]) {
return query.password;
}
return nil;
}
[Format Time: 0.0060 seconds]
不要忘记CocoaPods是快速便捷安装SSKeychian的好方法。
十四、使用NSAttributedString显示HTML
在app中使用webview有时会让人非常沮丧，即使只是显示少量的HTMLneirong ,webview也会消耗大量的内存。现在iOS7让这些变得简单了，你可以从用少量代码在HTML文件中创建一个NSAttributedString，比如：
Crayon Syntax Highlighter v2.7.1
NSString *html = @"<bold>Wow!</bold> Now <em>iOS</em> can create <h3>NSAttributedString</h3> from HTMLs!";
NSDictionary *options = @{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType};
NSAttributedString *attrString = [[NSAttributedString alloc] initWithData:[html dataUsingEncoding:NSUTF8StringEncoding] options:options documentAttributes:nil error:nil];
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