iOS/Tombo/Tombo/SinglePasswordDialog.m

   1 #import "SinglePasswordDialog.h"
   2
   3 @implementation SinglePasswordDialog {
   4     BOOL finished;
   5 }
   6
   7 @synthesize password=_password;
   8
   9 - (id)initWithDefault {
  10     return [self initWithTitle:@"Password" message:@"Please input password" delegate:self
  11              cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];
  12 }
  13
  14 - (NSString *)showAndWait {
  15     self.alertViewStyle = UIAlertViewStyleSecureTextInput;
  16     [self show];
  17     finished = NO;
  18
  19     // Wait in runloop till a button is clicked.
  20     while (!finished) {
  21         [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode
  22                                  beforeDate:[NSDate dateWithTimeIntervalSinceNow:300]];
  23     }
  24     return self.password;
  25 }
  26
  27 #pragma mark - UIAlertViewDelegate
  28
  29 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
  30     finished = YES;
  31     if (buttonIndex == 0) {
  32         // Cancel
  33         self.password = nil;
  34     } else if (buttonIndex == 1) {
  35         // OK
  36         UITextField *field = [self textFieldAtIndex:0];
  37         NSString *pw = [field.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
  38         if (pw.length == 0) {
  39             self.password = nil;
  40         } else {
  41             self.password = pw;
  42         }
  43     }
  44 }
  45
  46 @end