Login Screen Design Part 2 – Management App with Python Kivy

In the previous article, we discussed the initial steps for designing a login screen for a management app using Python Kivy. In this article, we will continue the discussion and delve deeper into the design and implementation of the login screen.

Adding Username and Password Fields

To create a login screen, we need to add username and password input fields. This can be achieved using the TextInput widget in Kivy. We can define two input fields for the username and password, and set their properties such as size, position, and appearance.

		
<Label:
    text: 'Username'
    size_hint: None, None
    size: 150, 50
    pos_hint: {'center_x': 0.5, 'center_y': 0.7}>

<TextInput:
    id: username
    size_hint: None, None
    size: 250, 50
    multiline: False
    pos_hint: {'center_x': 0.5, 'center_y': 0.6}>

<Label:
    text: 'Password'
    size_hint: None, None
    size: 150, 50
    pos_hint: {'center_x': 0.5, 'center_y': 0.5}>

<TextInput:
    id: password
    size_hint: None, None
    size: 250, 50
    multiline: False
    password: True
    pos_hint: {'center_x': 0.5, 'center_y': 0.4}>
		
	

Adding Login Button

Once the username and password fields are added, we can also add a login button to allow users to submit their credentials. We can use the Button widget in Kivy to create a login button, and define its properties such as text, size, and position.

		
<Button:
    text: 'Login'
    size_hint: None, None
    size: 150, 50
    pos_hint: {'center_x': 0.5, 'center_y': 0.3}
    on_release: app.verify_credentials(username.text, password.text)>
		
	

Verifying User Credentials

Finally, we need to define the method to verify the user credentials when the login button is clicked. We can create a function in the Python code that retrieves the username and password input, and compares them with the expected values. If the credentials are correct, the user can be redirected to the main application screen. If the credentials are incorrect, an error message can be displayed.

		
def verify_credentials(self, username, password):
    if username == 'admin' and password == 'password':
        # Redirect to main application screen
    else:
        # Display error message
		
	

By following these steps, we can create a fully functional login screen for a management app using Python Kivy. This will provide a secure and convenient way for users to access the application and manage their tasks.

Now that we have discussed the login screen design, the next step is to focus on the main application interface and its functionality. Stay tuned for the next article where we will explore the design of the main application screen.