NSArray数组 里面含有 NSMutableDictionary 字典 ，对NSMutableDictionary某个字段进行筛选过滤

NSMutableDictionary *dic0 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"广州",@"title", nil];

NSMutableDictionary *dic1 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"上海",@"title", nil];

NSMutableDictionary *dic2 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"背景",@"title", nil];

NSMutableDictionary *dic3 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"广州1",@"title", nil];

NSArray *dataArr = [NSArray arrayWithObjects:dic0,dic1,dic2,dic3, nil];

NSPredicate *predicate1;

predicate1 = [NSPredicate predicateWithFormat: @"title == '上海'"];

for (NSMutableDictionary *item in dataArr) {

BOOL match = [predicate1 evaluateWithObject:item];

NSLog (@"%s", (match) ? "YES" : "NO");

}