Simplified Tip Calculator

Task: Create an app named SimplifiedTipCalculator with the following features:

Design:

Refer to the attached interface$/$layout file for your design. The layout of your interface must follow the provided GUI.

Functionality:

The Bill Amount field is the only required input to calculate the Total field. The Percent field is optional.

The Percent field can be incremented or decremented using the $+$ and $-$ buttons next to it$.$ The default tip percentage is $15\%,$ as shown in the attached interface file.

The Tip field is calculated as the Bill Amount multiplied by the Tip Percentage.

The Total field is the sum of the Bill Amount and the Tip.

The Tip and Total fields should automatically update when the Bill Amount is entered or when the Percent is changed.

The increment and decrement buttons will adjust the Percent by $1\%$ per click. The Percent should update accordingly when these buttons are clicked.

Submit: XML Files code and Java Files code