NSPredicate数组内对象内的过滤器数组

I have the following method:

我有以下方法：

- (NSMutableArray *)getFilteredArrayFromArray:(NSMutableArray *)array withText:(NSString *)text {

if ([array count] <= 0)
    return nil;

NSMutableArray *arrayToFilter = [NSMutableArray arrayWithArray:array];
NSString *nameformatString = [NSString stringWithFormat:@"stationName contains[c] '%@'", text];
NSPredicate *namePredicate = [NSPredicate predicateWithFormat:nameformatString];

NSString *descformatString = [NSString stringWithFormat:@"stationTagline contains[c] '%@'", text];
NSPredicate *descPredicate = [NSPredicate predicateWithFormat:descformatString];

NSString *aToZformatString = [NSString stringWithFormat:@"stationSearchData.browseAtozArray.city contains[c] '%@'", text];
NSPredicate *aToZPredicate = [NSPredicate predicateWithFormat:aToZformatString];

NSPredicate * combinePredicate = [NSCompoundPredicate orPredicateWithSubpredicates:[NSArray arrayWithObjects:namePredicate, descPredicate, aToZPredicate, nil]];

[arrayToFilter filterUsingPredicate:combinePredicate];

return arrayToFilter;
}
- (NSM