我想要做的是根据.plist从数组填充pickerView,可以从textField添加.plist。我已经让它工作了,但它只添加了一个键,并在添加新键时替换它。例如,如果我添加“hello”,然后尝试添加另一个,它会将hello替换为其他内容。
- (IBAction)setContext:(id)sender {
NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *path = [[NSBundle mainBundle] pathForResource:@"fullArray" ofType:@"plist"];
NSString *textFieldText = textField.text;
NSMutableDictionary *rootDict = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
[rootDict setValue:textField.text forKey:textField.text];
NSString *writablePath = [documentsDirectory stringByAppendingPathComponent:@"fullArray.plist"];
[rootDict writeToFile:writablePath atomically: YES];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1
NSString *plistPath = [documentsDirectory stringByAppendingPathComponent:@"fullArray.plist"]; //3
NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:plistPath];
NSArray *array = [dictionary allKeys];
arrayContext = [[NSMutableArray alloc] initWithArray:array];
[pickerView selectRow:0 inComponent:0 animated:YES];
[textField endEditing:YES];
[pickerView reloadAllComponents];
}
我该如何解决这个问题?
答案 0 :(得分:2)
好的,每次在选择器中选择一些东西时,你都在创建一个新的NSMutableDictionary,正确的方法是: