How To Make Strikethrough Text In Android: A Simple Guide

To make strikethrough text in Android, simply use the StrikethroughSpan class or edit the text in your app’s code. **You can add this effect easily with a few lines of code or by using editing tools.** If you want to know how to make strikethrough text in Android, this guide will show you simple methods to achieve that. No need for complex steps — just follow along and add that crossing-out style effortlessly. Whether for notes or design, applying strikethrough enhances your text presentation.

How to Make Strikethrough Text in Android

Making text appear with a line through it, known as strikethrough, is a common way to show corrections, completed tasks, or changes in your Android app. Whether you are building your own app or just want to edit existing text, understanding how to add a strikethrough can come in handy. In this guide, we will explore different ways to create strikethrough text in Android, step by step, so you can easily implement this feature in your projects or personal use.

Why Use Strikethrough Text in Android?

Before diving into the how-tos, let’s understand why strikethrough text is useful. Many apps use this style to:

• Mark tasks as completed in to-do lists
• Show outdated or invalid information
• Create visual effects for edits or revisions
• Indicate discounts or sales prices in shopping apps
• Highlight changes in document editors

Using strikethrough text makes your app or content clearer and more visually appealing. It helps convey updates and changes effectively to the user.

How to Make Strikethrough Text in Android Using TextView

If you want to display strikethrough text within your Android application’s interface, the most common way is with a TextView. Here’s how to do it in detail.

Using XML Layout Files

Start by adding a TextView element in your layout XML file. To apply strikethrough, you can set the text style programmatically or directly in XML.

Example XML code:

<TextView
  android:id="@+id/myTextView"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="This text will have a line through it"
  android:textSize="18sp"
/>

To add the strikethrough effect, you set the paint flags dynamically in your activity or fragment code:

TextView textView = findViewById(R.id.myTextView);
textView.setPaintFlags(textView.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);

What’s happening here? The “Paint.STRIKE_THRU_TEXT_FLAG” adds the line through the text, and the bitwise OR operator ” | ” makes sure you don’t remove any other existing style flags.

Using Spannable String for Dynamic Text

Sometimes, you want to make parts of your text with a strikethrough. You can do this with SpannableString. It is very flexible and provides options to style parts of your text.

Step-by-step:

• Create a SpannableString object with your text
• Apply the StrikethroughSpan to specific sections
• Set the SpannableString to the TextView

Here’s a sample code snippet:

String originalText = "This is a strikethrough example.";
SpannableString spannableString = new SpannableString(originalText);
spannableString.setSpan(
  new StrikethroughSpan(),
  0,
  originalText.length(),
  Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
);
TextView textView = findViewById(R.id.myTextView);
textView.setText(spannableString);

This code applies strikethrough to the entire text. You can also target specific parts by changing the start and end indices.

How to Enable Strikethrough in Android Using Spannable String

When you want to dynamically apply or remove strikethrough effects based on user actions or app logic, SpannableString is your best tool.

Applying Strikethrough to Selected Text

Suppose your app has a list of tasks. When the user marks a task as done, you want the task name to appear with a line through it. You don’t need to reload the entire TextView—just update the span.

Example approach:

String task = "Buy groceries";
SpannableString spannableTask = new SpannableString(task);
// Apply strikethrough from start to end
spannableTask.setSpan(
  new StrikethroughSpan(),
  0,
  task.length(),
  Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
);
taskTextView.setText(spannableTask);

You can remove the strikethrough by setting the span to null or creating a new SpannableString without the span.

Adding Strikethrough in EditText for User Input

If your app includes an editing feature, like a note or task manager, you might want to let users add a strikethrough effect while typing.

Enabling Strikethrough on User’s Text

You can programmatically add strikethrough to the text entered in an EditText.

Here’s how:

EditText editText = findViewById(R.id.myEditText);
editText.setPaintFlags(editText.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);

Alternatively, users can select text, and your app could apply the effect based on the selection.

Implementing a Toggle Button for Strikethrough

You might want to add a button that toggles the strikethrough style on the selected text, making your app more interactive.

Sample code snippet:

Button strikeButton = findViewById(R.id.toggleStrikeButton);
strikeButton.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
    int start = editText.getSelectionStart();
    int end = editText.getSelectionEnd();

    Spannable spannable = new SpannableString(editText.getText());
    if (isStrikethroughActive) {
      spannable.removeSpan(new StrikethroughSpan());
      isStrikethroughActive = false;
    } else {
      spannable.setSpan(new StrikethroughSpan(), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
      isStrikethroughActive = true;
    }
    editText.setText(spannable);
  }
});

This makes text editing more flexible and user-friendly.

Common Mistakes When Applying Strikethrough in Android

While adding strikethrough, beginners often encounter some issues. Here’s what to watch out for:

• Using incorrect paint flags: Make sure to include “Paint.STRIKE_THRU_TEXT_FLAG”.
• Overwriting existing paint flags without preserving them. Always use the bitwise OR operator to add flags.
• Not updating the TextView after changes: Remember to call “setText()” after applying spans or paint flags.
• Applying spans incorrectly: Ensure start and end indices are valid and within the text length.
• For dynamic spans, manage your spannable objects carefully to avoid memory leaks or unexpected behavior.

Understanding these common pitfalls can help you implement the feature smoothly.

Styling and Customization of Strikethrough Text

Besides basic strikethrough, you can combine styles for a more appealing look.

Changing Line Color and Thickness

Android’s default strikethrough uses a simple line, but you can customize its appearance by creating custom spans or drawing your own styles.

Combining Styles with Other Text Effects

You might want to add other styles like bold, italics, or color alongside strikethrough. Use SpannableString to apply multiple spans at once.

Sample:

SpannableString spannable = new SpannableString("Important: this text is crossed out and bold");
spannable.setSpan(new StrikethroughSpan(), 0, 44, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
spannable.setSpan(new StyleSpan(Typeface.BOLD), 0, 44, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannable);

This enhances visual hierarchy and clarity.

Summary of Techniques to Make Strikethrough Text in Android

| Method | Use Case | How It Works |
| — | — | — |
| Setting paint flags on TextView | Static text in layouts | Adds a line through all text in a TextView |
| SpannableString with StrikethroughSpan | Dynamic or partial text | Styles specific parts of your text dynamically |
| Applying style programmatically | User-driven text modifications | Allows toggling or updating styles based on user actions |

With these methods, you can incorporate strikethrough effects seamlessly into your Android apps or personal projects. Whether you want a simple line through your text or a more complex, styled look, understanding these techniques will give you the flexibility to achieve your design goals.

Frequently Asked Questions

Can I add strikethrough effect to specific parts of the text in Android?

Yes, you can apply a strikethrough effect to specific sections of your text in Android. Use the SpannableString class along with the StrikethroughSpan to target only the parts you want to strike through, leaving the rest of the text unaffected. This approach allows precise control over which segments display the line.

What is the easiest way to add a strikethrough to text in Android Studio?

The simplest method is to use HTML tags within your TextView by setting its text with Html.fromHtml(). Wrap the text you want to strike through inside or tags. For example, setting text as “Cancelled” displays the word with a line through it, providing a quick visual effect without extra coding.

How can I toggle strikethrough on a button click dynamically?

To toggle strikethrough dynamically, adjust the TextView’s paint flags in your code. Check if the strikethrough flag is active using getPaintFlags(), then add or remove the Paint.STRIKE_THRU_TEXT_FLAG accordingly. When users press the button, update the flags and refresh the TextView to reflect the change instantly.

Is it possible to animate the appearance of the strikethrough line in Android?

Implementing animated strikethrough effects requires custom drawing or animation techniques. You can create a custom view that gradually draws the line over time using ObjectAnimator or ValueAnimator. Over the animation duration, draw the line progressively to produce a smooth visual transition that enhances user interaction.

How do I style text with strikethrough together with other formatting styles?

Combine multiple text styles by using SpannableString and applying different spans. Use StyleSpan for bold or italic, ForegroundColorSpan for color, and StrikethroughSpan for the line. Apply all spans to your text segments, allowing full customization and a cohesive look in your app’s text elements.

Final Thoughts

Pour faire un texte barré en Android, utilisez la méthode setPaintFlags() avec Paint. STRIKE_THRU_TEXT_FLAG. Appliquez cette propriété à votre TextView pour ajouter un barré.

Vous pouvez également utiliser le code XML dans votre layout, en ajoutant android:textDecoration=”line-through” dans votre TextView. Cela offre une solution simple et directe.

En résumé, comment faire strikethrough text in android repose sur l’utilisation de setPaintFlags() ou d’attributs XML. Ces méthodes permettent d’ajouter facilement un style barré à votre texte.