将字符串添加到 plist 文件时遇到问题

Question

我的应用程序中有一个 plist 文件，表格视图会加载它的对象。当用户在textfield 中输入文本并点击保存按钮时，我需要保存一个字符串，这是我的代码，日志显示了正确的字符串，但表格没有重新加载，plist 没有添加任何内容！

     NSString *rootPath=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *plistPath=[rootPath stringByAppendingPathComponent:@"users.plist"];
NSMutableDictionary *plist_dict=[[NSMutableDictionary alloc]initWithContentsOfFile:plistPath];

if(plist_dict==nil)
{
    plist_dict =[[NSMutableDictionary alloc]init];
}
[plist_dict setObject:_username.text forKey:@"username"];

[plist_dict writeToFile:plistPath atomically:YES];


[_tableView reloadData];

这是我的默认 plist 文件：

<plist version="1.0">
<dict>
    <key>username</key>
    <array>
        <string>Instagram</string>
    </array>
</dict>
</plist>

Answer 1

 NSString *rootPath=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *plistPath=[rootPath stringByAppendingPathComponent:@"appSetting.plist"];
NSMutableDictionary *plist_dict=[[NSMutableDictionary alloc]initWithContentsOfFile:plistPath];

if(plist_dict==nil)
{
    plist_dict =[[NSMutableDictionary alloc]init];
}
[plist_dict setObject:[NSNumber numberWithBool:status] forKey:@"isLoggedIn"];

[plist_dict writeToFile:plistPath atomically:YES];

使用此代码。它为我工作。希望对你有帮助。