iphone - 保存在UIPicker中选择的值的最佳方法？

我的视图中有3个UIPicker，我想保存应用程序关闭时的选定值。我目前正在使用NSUserDefaults进行其他操作。但是我不确定用于保存选定的UIPickers值的语法。谢谢我的编码员！

最佳答案

这是如何从UIPickerView获取选定的值-

[yourPickerDataArray objectAtIndex:[pickerView selectedRowInComponent:0]];

这是如何在NSUserDefaults中保存值-

NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];

// saving an NSString
[prefs setObject:@"TextToSave" forKey:@"keyToLookupString"];

// saving an NSInteger
[prefs setInteger:42 forKey:@"integerKey"];

// saving a Double
[prefs setDouble:3.1415 forKey:@"doubleKey"];

// saving a Float
[prefs setFloat:1.2345678 forKey:@"floatKey"];

// This is suggested to synch prefs, but is not needed (I didn't put it in my tut)
[prefs synchronize];

这是如何从NSUserDefaults中检索值-

NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];

// getting an NSString
NSString *myString = [prefs stringForKey:@"keyToLookupString"];

// getting an NSInteger
NSInteger myInt = [prefs integerForKey:@"integerKey"];

// getting an Float
float myFloat = [prefs floatForKey:@"floatKey"];

关于iphone - 保存在UIPicker中选择的值的最佳方法？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8867397/