Objective c 使用NSPredicate筛选数组

我想要的是我的swag，Apples，Oranges数组被它所包含的内容过滤，所以如果它包含一个字母或一个字母串。到目前为止，我有：

NSArray* test = @[@"swag", @"Apples", @"Oranges"];
//NSString *nameOnly = [[onlyApps lastPathComponent] stringByDeletingPathExtension]
NSString *searchinput = @"a";
NSPredicate * fltrSearch = [NSPredicate predicateWithFormat:@"%@ contains[cd] '%@'", test,     searchinput];
NSArray * Search = [test filteredArrayUsingPredicate:fltrSearch];
NSLog(@"%@", fltrSearch);
NSLog(@"%@", Search);

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请参考以下修改代码：-

NSArray* test = @[@"swag", @"Apples", @"Oranges"];
NSString *searchinput = @"a";
NSPredicate * fltrSearch = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@",searchinput];
NSArray * Search = [test filteredArrayUsingPredicate:fltrSearch];
NSLog(@"%@", Search);

您的predicateWithFormat行错误。因此，只需替换以下行：-

NSPredicate * fltrSearch = [NSPredicate predicateWithFormat:@"%@ contains[cd] '%@'", test,     searchinput];

使用修改的行：-

NSPredicate * fltrSearch = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@",searchinput];

输出：-

(
    swag,
    Apples,
    Oranges
)

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好吧，如果我想在下面做这个怎么办？