UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"选择照片" message:@"" preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertController *alert =[[UIAlertController alloc]init];
[alert addAction:[UIAlertAction actionWithTitle:@"相册选取" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
[alert dismissViewControllerAnimated:YES completion:nil];
}]];
[self presentViewController:alert animated:YES completion:nil];
