How to Convert an Android Color Integer to a Hex String?

Converting Color Integers to Hex Strings in Android

Often when working with Android graphics, you may encounter color integers that need to be converted into hex strings. Whether for debugging or UI manipulation, understanding this conversion is crucial.

Question:

Given an Android color integer, such as -16776961, how do you convert it into a hex string in the format #RRGGBB, excluding the alpha channel?

Answer:

To achieve this conversion, you can leverage the following approach:

<code class="java">String hexColor = String.format("#%06X", (0xFFFFFF & intColor));</code>

In the above code:

• intColor represents your given integer, e.g., -16776961.
• (0xFFFFFF & intColor) masks out the alpha channel and ensures you only get the RRGGBB portion.
• String.format("#X", ...) applies a format string to produce a hex string with leading zeros to ensure a length of 6 characters.

This method provides a straightforward conversion from an integer to a hex string, allowing you to represent colors in a human-readable format for various purposes within your Android applications.

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