objective-c - 如何从字典数组中提取范围进行随机化？ ( Objective-C )

Question

我有一个字典数组存储在 plist 中，其中包含键和字符串，它们是我的测验应用程序的问题和答案。我正在屏幕上放置一个随机问题，但我想将问题的答案也以随机顺序放置在屏幕上。我该怎么做？

问题的引用方式如下:

-(void)displayQuestion: (NSDictionary *) Question 
{
    [questionLabel setText:[Question objectForKey:@"Question"]];
    [answer1 setText:[Question objectForKey:@"Answer1"]];
    [answer2 setText:[Question objectForKey:@"Answer2"]];
    [answer3 setText:[Question objectForKey:@"Answer3"]]; 
}

<dict>
    <key>category</key>
    <string>Elementary Pilot</string>
    <key>Question</key>
    <string>You are approaching a hang glider head-on and at approximately the same height. You should:</string>
    <key>Answer1</key>
    <string>Turn to your right?</string>
    <key>Answer2</key>
    <string>Turn to your left?</string>
    <key>Answer3</key>
    <string>Lose height rapidly?</string>
</dict>

Answer 1

使用此答案中找到的类别 What's the Best Way to Shuffle an NSMutableArray?

将你的答案放入 NSMutableArray 中，然后用 来打乱答案

NSMutableArray *answers = //get answers
[answers shuffle];