RungeZhai / LGAlertSheet

A customised AlertView and ActionSheet

LGAlertSheet

A customized AlertView and ActionSheet

Demo

Overview

LGAlertSheet includes customized AlertView and ActionSheet.

Four kinds of AlertViews are implemented:

1. Normal AlertView with title, message and button(s);

2. AlertView with an image on the top;

3. AlertView with a TextField in it;

4. AlertView showing a progress view and optionally transitioning to completion state.

Two kinds of ActionSheet are implemented: ActionSheet with 1 option and with 2 options.

LGAlertSheet pretty much covers most of the usage scenarios and, moreover:

1. Easy to customize UI as it is implemented using xib and Autolayout.

2. Fully optimized for device rotation and keyboard.

3. Support extensions.

4. Support multiple instances of AlertView/ActionSheet showing one above another.

Requires iOS7 or later. The popping up animation is a spring animation and it's only available on iOS7 and later.

Usage

1. Showing a plain alert view:

[LGAlertView showAlertWithTitle:@"This is title"
                        message:@"This is message"
              cancelButtonTitle:@"Cancel"
               otherButtonTitle:@"OK"
              cancelButtonBlock:nil
               otherButtonBlock:^(LGAlertView *alertView) {
                   [alertView dismiss];
               }];

Note that to dismiss the AlertView when the "OK" button is clicked, you have to manually call dismiss. The advantage of this is that you can do something else to the alert like showing wrong message or popping up another AlertView.

2. Showing an AlertView with an image on the top:

[LGAlertView showAlertWithTitleImage:[UIImage imageNamed:@"import_done"]
                               title:@"This is title"
                             message:@"This is message"
                   cancelButtonTitle:@"Cancel"
                    otherButtonTitle:@"OK"
                   cancelButtonBlock:nil
                    otherButtonBlock:nil];

3. Showing AlertView with a TextField:

[LGAlertView showAlertWithTitle:@"This is Title"
                        message:@"This is message"
              cancelButtonTitle:@"Cancel"
               otherButtonTitle:@"OK"
              cancelButtonBlock:nil
                 textFieldBlock:^(LGAlertView *alertView) {
                     [alertView showErrorMessage:@"Wrong Password" animated:YES];
                 }];
}

Here you can show some error message if user's input is not valid with optionally a spring animation.

4. Showing AlertView with a progress view:

LGAlertView *alertView = [LGAlertView alertWithInProgressImage:[UIImage imageNamed:@"import_in_progress"]
                                               completionImage:[UIImage imageNamed:@"import_done"]
                                                       message:@"This is a long long long long long long message"
                                             cancelButtonTitle:@"OK, I know"
                                              otherButtonTitle:@"Please don't"
                                             cancelButtonBlock:nil
                                              otherButtonBlock:nil];
    
[alertView show];

You can call [alertView animateToCompletionState]; after the progress is completed to transite to completion state, or set alertView.progressView's animationCompletionCallBack and in that block call [alertView animateToCompletionState]; so that it will animate to completion state once the progress is completed.

5. Showing ActionSheet with 1 options:

[LGActionSheet showActionSheetWithCancelButtonTitle:@"Cancel"
                                   otherButtonTitle:@"OK"
                                  cancelButtonBlock:nil
                                   otherButtonBlock:nil
                                           fromView:nil];

If you pass nil to fromView, the super view of ActionSheet is the topmost window. But CAUTION: This parameter MUST NOT be nil in extensions as we cannot use UIWindow in extensions.

6. Showing ActionSheet with 2 options:

[LGActionSheet showActionSheetWithCancelButtonTitle:@"Cancel"
                                  otherButtonTitle0:@"Option 1"
                                  otherButtonTitle1:@"Option 2"
                                  cancelButtonBlock:nil
                                  otherButtonBlock0:nil
                                  otherButtonBlock1:nil
                                           fromView:nil];

Extensions

To use LGAlertSheet in extensions, you have to:

1. Define Macro LGAS_APP_EXTENSIONS

2. Either passing a non-nullable superView parameter to init... method (LGActionSheet) or setting superView before showing the AlertView/ActionSheet.