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Android

Sambhav Anand
Sambhav Anand
2,010 Points

How can I convert a user entered string to an integer or drawable object?

I want the user to enter his/her favorite color and then change the background of the screen based on his/her input. So how can I achieve this. I know that I'll have to use a try-catch block in-case the user enters a wrong color.

2 Answers

Jon Kussmann
PLUS
Jon Kussmann
Courses Plus Student 7,254 Points

Assuming you have a reference to their favorite color as mFavoriteColor, and the background you want to change as mBackgroundLayout, you can write a series of if statements.

if (mFavoriteColor.equals("red")) {
  mBackgroundLayout.setBackgroundColor(Color.RED);

} else if (mFavoriteColor.equals("blue")) {
 mBackgroundLayout.setBackgroundColor(Color.BLUE);

} else if (mFavoriteColor.equals("green")) {
 mBackgroundLayout.setBackgroundColor(Color.GREEN);

} else {
 mBackgroundLayout.setBackgroundColor(Color.BLACK);
}
Sambhav Anand
Sambhav Anand
2,010 Points

But isn't there a more refined way to achieve this. This way I'll have to hard code various colors for my code to work. Isn't there a dynamic solution.

anthony crowell
PLUS
anthony crowell
Courses Plus Student 10,953 Points

I would try for a more dynamic approach and set your variable to something like userColor = ""; then in your try catch statement or what ever type of loop you use, set that variable as the input from the user. With my variable choice make sure your looking for a string input like 'red' or such, if you are looking for a hexadecimal you will have to change your variable type and use some type of conversion.