小编use*_*570的帖子

在iOS7之前,我可以使用此代码UITextField向我添加(文本输入字段)UIAlertView.

UITextField *txtNewPassword = [[UITextField alloc] initWithFrame:secondTextFldRect];

        txtNewPassword.delegate     = self;
        txtNewPassword.text         = @"";
        txtNewPassword.clearButtonMode = UITextFieldViewModeWhileEditing;
        txtNewPassword.borderStyle      = UITextBorderStyleRoundedRect;
        txtNewPassword.autocapitalizationType = UITextAutocapitalizationTypeNone;
        txtNewPassword.tag              = kNewPasswordTxtFldTag;
        [txtNewPassword setBackgroundColor:[UIColor whiteColor]];
        [txtNewPassword setKeyboardAppearance:UIKeyboardAppearanceAlert];
        [txtNewPassword setAutocorrectionType:UITextAutocorrectionTypeNo];
        [txtNewPassword setPlaceholder:@"New password"];
        [txtNewPassword setTextAlignment:UITextAlignmentLeft];
        [txtNewPassword setSecureTextEntry:YES];
        [alert addSubview:txtNewPassword];
        [txtNewPassword release];

更新到iOS7后,它停止工作 - 我的文本字段不再显示.更新代码的建议方法是什么？