NSString *searchText = [self.searchTextField.textstringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];
if (!searchText.length > 0) {
[selfshowAlertWithTitle:nilmessage:@"请输入搜索关键字！"];
}
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NSString *searchText = [self.searchTextField.textstringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];
if (!searchText.length > 0) {
[selfshowAlertWithTitle:nilmessage:@"请输入搜索关键字！"];
}
转载于:https://www.cnblogs.com/guligei/p/3175268.html