Question

我正在使用NSUserDefaults存储以下信息：

NSUserDefaults *settings = [NSUserDefaults standardUserDefaults];
[settings setObject:[NSArray arrayWithObjects:@"An Invitation.png",@"Apple Color Emoji ",[NSKeyedArchiver archivedDataWithRootObject:[UIColor redColor]], nil] forKey:@"An Invitation"];

我正在另一个类中检索相同的信息：

NSDictionary *dict = [settings dictionaryRepresentation];
for(id item in [dict allKeys]) {
    NSLog(@"settings array is---- %@",[settings objectForKey:item]);
    if([[dict objectForKey:item] isKindOfClass:[NSArray class]]) {
        if([[settings objectForKey:@"CardImg"] isEqualToString:[[dict objectForKey:item] objectAtIndex:0]]) {
            NSLog(@"received font is ---- %@",[[dict objectForKey:item] objectAtIndex:1]);
            [self.txtView setFont:[UIFont fontWithName:[NSString stringWithFormat:@"%@",[[dict objectForKey:item] objectAtIndex:1]] size:20]];
            NSLog(@"received font is ---- %@",[[self.txtView font] fontName]);
            UIColor *txtcolor =(UIColor*) [ NSKeyedUnarchiver unarchiveObjectWithData:[[dict objectForKey:item] objectAtIndex:2]];
            NSLog(@"received text color is ---- %@", [[dict objectForKey:item] objectAtIndex:2]);
            [self.txtView setTextColor:txtcolor];
        }
    }
}

self.textView中的字体和颜色不会根据dict中的值进行更改。在打印[self.txtView.font fontName]后，我收到Null，但在打印[[dict objectForKey:item] objectAtIndex:1]时，我正在获得＆＃34; Apple Color Emoji＆＃34;。根据XIB属性检查器中的默认值设置字体和颜色。请帮帮我。

Answer 1

字体为零，因为字体名称末尾有空格。并且颜色需要取消归档。从字体名称中删除空格并以这种方式检索已保存的设置：

NSArray *retrieved = [settings objectForKey:@"An Invitation"];

NSString *imageName = retrieved[0];
UIFont *font = [UIFont fontWithName:retrieved[1] size:12];
UIColor *color = [NSKeyedUnarchiver unarchiveObjectWithData:retrieved[2]];

UITextView文本颜色和字体未设置

1 个答案: