Скачать или смотреть How to Set Multi Text Color for TextView in Android Versions Below 24

Struggling with setting text color in a TextView for Android versions lower than 24? Discover effective alternatives using Spannable and AppCompatTextView in this detailed guide!
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This video is based on the question https://stackoverflow.com/q/64724287/ asked by the user 'Android' ( https://stackoverflow.com/u/13293374/ ) and on the answer https://stackoverflow.com/a/64724603/ provided by the user 'ephemient' ( https://stackoverflow.com/u/20713/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Set Multi Text Color for TextView in Android Versions Below 24

If you’re a developer working with Android, you may sometimes encounter limitations when trying to manipulate text styles in TextViews, particularly with setting multiple text colors in versions below Android 24. This can be quite frustrating, especially if you are accustomed to using HTML styling to achieve your desired text appearance in higher API levels.

The Problem: Multi Text Color Setup in TextViews for Android 24

Many developers might turn to the Html.fromHtml() method to style text color within a TextView. However, this method is not effective for devices running versions lower than 23. For example, code like the following:

[[See Video to Reveal this Text or Code Snippet]]

works seamlessly on Android 23 and above, but fails on versions under API Level 23, causing confusion among many in the development community.

The Solution: Using Spans for Text Styling

Skip the HTML, Embrace Spans

Instead of relying on HTML, which can be limited in lower versions, you can utilize Spannable strings to apply multi-color text dynamically. Spannable allows you to modify text styles, such as color, size, and typeface, easily across different versions of Android.

How to Implement Spans

Here’s how to set different text colors using SpannableString:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Code:

SpannableString: This class allows you to style your text. In this case, it’s initialized with the text "hello".

setSpan(): This method is used to define a span (style) for a range of characters.

new ForegroundColorSpan(Color.RED): Here, we create a span that sets the text color to red.

The parameters 0 and text.length() specify the start and end index for the span, applying the red color to the entire string.

Using AppCompatTextView

If you are using the androidx.appcompat library, it's recommended to create an instance of AppCompatTextView instead of the standard TextView.

[[See Video to Reveal this Text or Code Snippet]]

This ensures better compatibility and support for various styling features across older Android devices.

Conclusion

When developing for lower versions of Android, especially for those below API Level 23, it’s essential to explore alternative methods like using Spannable strings rather than relying solely on HTML. This approach not only allows you to set multiple text colors effectively but does so while maintaining compatibility with older devices.

By following the steps outlined above, developers can overcome the limitations that come with using HTML styling in TextViews and enhance user experience through richer text features. If you’re feeling stuck, leveraging Spannable might be the perfect solution to keep your text vibrant!