How to capitalize the first letter of text in a TextView in an Android Application

How to capitalize the first letter of text in a TextView in an Android Application

To capitalize the first letter of text in a TextView in an Android application, you can achieve this programmatically in your Java or Kotlin code. Here's an example using both Java and Kotlin:

Java:

import android.os.Bundle; import android.widget.TextView; import androidx.appcompat.app.AppCompatActivity; public class YourActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView textView = findViewById(R.id.yourTextViewId); // Replace with your TextView ID String originalText = textView.getText().toString(); // Capitalize the first letter String capitalizedText = capitalizeFirstLetter(originalText); // Set the capitalized text back to TextView textView.setText(capitalizedText); } private String capitalizeFirstLetter(String text) { if (text == null || text.isEmpty()) { return text; } return text.substring(0, 1).toUpperCase() + text.substring(1); } }

Kotlin:

import android.os.Bundle import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class YourActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val textView: TextView = findViewById(R.id.yourTextViewId) // Replace with your TextView ID val originalText: String = textView.text.toString() // Capitalize the first letter val capitalizedText: String = capitalizeFirstLetter(originalText) // Set the capitalized text back to TextView textView.text = capitalizedText } private fun capitalizeFirstLetter(text: String): String { return if (text.isEmpty()) { text } else { text.substring(0, 1).toUpperCase() + text.substring(1) } } }

Make sure to replace yourTextViewId with the actual ID of your TextView. This code retrieves the text from the TextView, capitalizes the first letter using the capitalizeFirstLetter method, and sets the modified text back to the TextView.

Examples

  1. "Android capitalize first letter in TextView XML"

    • Code:
      <TextView android:id="@+id/myTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="your text here" android:textAllCaps="true"/>
    • Description: Set the android:textAllCaps attribute to "true" in the XML layout file to capitalize all letters in the TextView.

  2. "Android capitalize first letter programmatically in Java"

    • Code:
      TextView myTextView = findViewById(R.id.myTextView); String text = "your text here"; String capitalizedText = text.substring(0, 1).toUpperCase() + text.substring(1); myTextView.setText(capitalizedText);
    • Description: Use Java code to programmatically capitalize the first letter of the text and set it to the TextView.

  3. "Android capitalize first letter in TextView Kotlin"

    • Code:
      val myTextView: TextView = findViewById(R.id.myTextView) val text = "your text here" val capitalizedText = text.substring(0, 1).toUpperCase() + text.substring(1) myTextView.text = capitalizedText
    • Description: Achieve the same functionality in Kotlin by using Kotlin syntax and functions.

  4. "Android capitalize first letter using InputFilter"

    • Code:
      TextView myTextView = findViewById(R.id.myTextView); String text = "your text here"; InputFilter inputFilter = new InputFilter.AllCaps(); myTextView.setFilters(new InputFilter[] {inputFilter}); myTextView.setText(text);
    • Description: Apply an InputFilter with AllCaps to the TextView, which automatically capitalizes all letters.

  5. "Android capitalize first letter using Data Binding"

    • Code:
      <!-- In your layout file --> <layout> <data> <variable name="viewModel" type="com.example.YourViewModel"/> </data> <TextView android:id="@+id/myTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{viewModel.capitalizedText}"/> </layout> 
      // In your ViewModel val capitalizedText: String get() = yourText.capitalize()
    • Description: Use Data Binding to bind a capitalized version of the text from the ViewModel to the TextView.

  6. "Android capitalize first letter using TextWatcher"

    • Code:
      TextView myTextView = findViewById(R.id.myTextView); myTextView.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // Capitalize the first letter String capitalizedText = s.toString().substring(0, 1).toUpperCase() + s.toString().substring(1); myTextView.setText(capitalizedText); } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { } });
    • Description: Use a TextWatcher to listen for text changes and capitalize the first letter dynamically.

  7. "Android capitalize first letter using XML attributes and styles"

    • Code:
      <!-- In your styles.xml --> <style name="CapitalizedTextViewStyle"> <item name="android:textAllCaps">true</item> </style> 
      <!-- In your layout file --> <TextView android:id="@+id/myTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" style="@style/CapitalizedTextViewStyle" android:text="your text here"/>
    • Description: Define a style with the textAllCaps attribute set to true and apply the style to the TextView.

  8. "Android capitalize first letter using SpannableString"

    • Code:
      TextView myTextView = findViewById(R.id.myTextView); String text = "your text here"; SpannableString spannableString = new SpannableString(text); spannableString.setSpan(new ForegroundColorSpan(Color.BLACK), 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); myTextView.setText(spannableString);
    • Description: Use SpannableString to apply formatting to specific parts of the text, including capitalizing the first letter.

  9. "Android capitalize first letter using StringUtils"

    • Code:
      TextView myTextView = findViewById(R.id.myTextView); String text = "your text here"; String capitalizedText = StringUtils.capitalize(text); myTextView.setText(capitalizedText);
    • Description: If you have the Apache Commons Lang library included, you can use StringUtils.capitalize to capitalize the first letter.

  10. "Android capitalize first letter using XML string resource"

    • Code:
      <!-- In your strings.xml --> <string name="capitalized_text">Your text here</string> 
      <!-- In your layout file --> <TextView android:id="@+id/myTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/capitalized_text"/>
    • Description: Define the capitalized text in a string resource, and then use it in the TextView.

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