Interface
- Warning dialog
- Confirmation dialog
- Toast
- Bottom sheet
- Set the title
- Set the color of the bottom border of the navigation bar
- Set the navigation bar background color
- Set the button in the upper-right corner
- Display the button in the upper-right corner
- Hide the button in the upper-right corner
- Show loading indicator
- Hide loading indicator
- Display the loading indicator in the title bar
- Hide the title bar loading indicator