android - Change EditText password mask character to asterisk (*)

Android - Change EditText password mask character to asterisk (*)

To change the password mask character of an EditText in Android to an asterisk (*), you can use the TransformationMethod property of the EditText. Here's how you can do it:

Step 1: XML Layout

In your XML layout, define the EditText for password input:

<EditText android:id="@+id/editTextPassword" android:layout_width="match_parent" android:layout_height="wrap_content" android:inputType="textPassword" /> <!-- Use textPassword for password input -->

Step 2: Change Mask Character Programmatically

In your activity or fragment, you can change the mask character by implementing a custom TransformationMethod:

import android.os.Bundle import android.text.method.ReplacementTransformationMethod import android.text.method.TransformationMethod import android.widget.EditText import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val editTextPassword: EditText = findViewById(R.id.editTextPassword) // Set the custom transformation method editTextPassword.transformationMethod = AsteriskPasswordTransformationMethod() } private class AsteriskPasswordTransformationMethod : ReplacementTransformationMethod() { override fun getOriginal(): CharSequence { return "" // No original character } override fun getReplacement(): CharSequence { return "*" // Use asterisk as the mask character } } }

Summary

  1. Define EditText: Set inputType to textPassword in XML.
  2. Custom TransformationMethod: Implement a custom TransformationMethod to replace characters with asterisks.
  3. Set Transformation Method: Apply the custom method to the EditText in your activity.

This will change the password mask character in the EditText to an asterisk (*).

Examples

  1. How to change the password mask character in EditText to asterisk (*) in Android?

    • Description: Modify the default password mask character from a dot (•) to an asterisk (*) for better visibility and user preference.
    • Code Implementation:
      editText.setTransformationMethod(new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } }); private class PasswordCharSequence implements CharSequence { private CharSequence mSource; public PasswordCharSequence(CharSequence source) { mSource = source; // Store char sequence } public char charAt(int index) { return '*'; // Replace each character with asterisk (*) } public int length() { return mSource.length(); // Return original length } public CharSequence subSequence(int start, int end) { return mSource.subSequence(start, end); // Return subsequence } }

  2. Android EditText password mask character change to asterisk (*) programmatically

    • Description: Dynamically set the password mask character to asterisk (*) for an EditText widget in Android.
    • Code Implementation:
      editText.setTransformationMethod(new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } }); private class PasswordCharSequence implements CharSequence { private CharSequence mSource; public PasswordCharSequence(CharSequence source) { mSource = source; // Store char sequence } public char charAt(int index) { return '*'; // Replace each character with asterisk (*) } public int length() { return mSource.length(); // Return original length } public CharSequence subSequence(int start, int end) { return mSource.subSequence(start, end); // Return subsequence } }

  3. How to customize password mask character to asterisk (*) in EditText Android XML?

    • Description: Configure XML attributes to set the password mask character to asterisk (*) for an EditText widget in Android layout XML.
    • Code Implementation:
      <EditText android:id="@+id/editText" android:layout_width="match_parent" android:layout_height="wrap_content" android:inputType="textPassword" android:transformationMethod="android.text.method.PasswordTransformationMethod" />

  4. Android EditText password masking with asterisk (*) instead of dot (•)

    • Description: Replace the default dot (•) password mask character with an asterisk (*) in an EditText widget for password input in Android.
    • Code Implementation:
      editText.setTransformationMethod(new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } }); private class PasswordCharSequence implements CharSequence { private CharSequence mSource; public PasswordCharSequence(CharSequence source) { mSource = source; // Store char sequence } public char charAt(int index) { return '*'; // Replace each character with asterisk (*) } public int length() { return mSource.length(); // Return original length } public CharSequence subSequence(int start, int end) { return mSource.subSequence(start, end); // Return subsequence } }

  5. How to change EditText password mask character to asterisk (*) without subclassing PasswordTransformationMethod?

    • Description: Implement a method to change the EditText password mask character to asterisk (*) without directly subclassing PasswordTransformationMethod.
    • Code Implementation:
      editText.setTransformationMethod(new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return source.toString().replaceAll(".", "*"); } });

  6. Android EditText password mask character customization to asterisk (*) in Kotlin

    • Description: Customize the password mask character to asterisk (*) for an EditText widget in Android using Kotlin.
    • Code Implementation:
      editText.transformationMethod = object : PasswordTransformationMethod() { override fun getTransformation(source: CharSequence?, view: View?): CharSequence { return PasswordCharSequence(source) } } private inner class PasswordCharSequence(private val mSource: CharSequence?) : CharSequence { override val length: Int get() = mSource?.length ?: 0 override fun get(index: Int): Char { return '*' // Replace each character with asterisk (*) } override fun subSequence(startIndex: Int, endIndex: Int): CharSequence { return mSource?.subSequence(startIndex, endIndex) ?: "" } }

  7. How to set EditText password mask character to asterisk (*) and allow toggle in Android?

    • Description: Implement a toggle feature to switch between masking characters (dot to asterisk and vice versa) in an EditText widget for password input.
    • Code Implementation:
      boolean isMasked = true; // Initial state toggleButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { isMasked = !isMasked; editText.setTransformationMethod(isMasked ? new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } } : null); } });

  8. Android EditText password mask character change to asterisk (*) on focus

    • Description: Modify the password mask character to asterisk (*) when an EditText widget gains focus in Android.
    • Code Implementation:
      editText.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View v, boolean hasFocus) { if (hasFocus) { editText.setTransformationMethod(new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } }); } else { editText.setTransformationMethod(null); } } });

  9. How to show EditText password as asterisk (*) instead of dot (•) programmatically in Android?

    • Description: Programatically change the password mask character to asterisk (*) instead of dot (•) for an EditText widget in Android.
    • Code Implementation:
      editText.setTransformationMethod(new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } }); private class PasswordCharSequence implements CharSequence { private CharSequence mSource; public PasswordCharSequence(CharSequence source) { mSource = source; // Store char sequence } public char charAt(int index) { return '*'; // Replace each character with asterisk (*) } public int length() { return mSource.length(); // Return original length } public CharSequence subSequence(int start, int end) { return mSource.subSequence(start, end); // Return subsequence } }

  10. Change EditText password mask character to asterisk (*) and back in Android

    • Description: Implement a feature to switch between masking characters (dot to asterisk and vice versa) in an EditText widget for password input in Android.
    • Code Implementation:
      boolean isMasked = true; // Initial state toggleButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { isMasked = !isMasked; editText.setTransformationMethod(isMasked ? new PasswordTransformationMethod() { @Override public CharSequence getTransformation(CharSequence source, View view) { return new PasswordCharSequence(source); } } : new PasswordTransformationMethod()); } });

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