Stylize in app messages

If you want to specify fonts and colors of the messages displayed you can use the themeForMessage function and provide a theme for the specified message. For each message you can specify the following properties:

• backgroundColor: the color of the background

• titleStyle: the text style for the title of the message

• bodyStyle: the text style for the body of the message

• closeButtonColor: the color of the close button

• closeButtonBackgroundColor: the background color of the close button

• button1BackgroundColor: the background color for the first button

• button1TextStyle: the text style for the first button.

• button2BackgroundColor: the background color for the second button

• button2BorderColor: the border color for the second button

• button2TextStyle: the text style for the second button

Example:

...

    MBManager.shared.plugins = [
      MBMessages(
        themeForMessage: (message) => _themeForMessage(message),
      ),
    ];

...

  MBInAppMessageTheme _themeForMessage(MBInAppMessage message) {
    if (message.style == MBInAppMessageStyle.bannerTop) {
      return MBInAppMessageTheme(
        titleStyle: TextStyle(
          fontWeight: FontWeight.bold,
          color: Colors.blue,
        ),
      );
    } else {
      return MBInAppMessageTheme(
        titleStyle: TextStyle(
          fontWeight: FontWeight.normal,
          color: Colors.red,
        ),
      );
    }
  }