Problem with android password field, not hiding the last character typed

In Android, I create a password field like this:

    EditText text = new EditText(context);
    text.setTransformationMethod(PasswordTransformationMethod.getInstance());

Or like this, which seems to do the same thing:

    Edit开发者_StackOverflow中文版Text text = new EditText(context);
    text.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);

I get a nice password field except for the last character typed by the user. It's visible on the screen for a few seconds before beeing masked with a dot.

Here is a screenshot:

Do you know how to fix this behaviour please?

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This is expected behavior. With the soft keyboards on most devices, it is valuable feedback that they are typing the password correctly.

For a list of all of the different inputTypes you can specify and how they change the EditText,

see android inputTypes .

Also, it is possible to change this behavior by implementing your own TransformationMethod and setting it via setTransformationMethod(), but I would not recommend doing that. Users will expect the behavior you are seeing and by changing your app, you'll be providing an inconsistent user experience.

also check this android article

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Implementation of TransformationMethod to hide last char typed in password:

public class LoginActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // example of usage
    ((TextView) findViewById(R.id.password)).setTransformationMethod(new HiddenPassTransformationMethod());
}

private class HiddenPassTransformationMethod implements TransformationMethod {

    private char DOT = '\u2022';

    @Override
    public CharSequence getTransformation(final CharSequence charSequence, final View view) {
        return new PassCharSequence(charSequence);
    }

    @Override
    public void onFocusChanged(final View view, final CharSequence charSequence, final boolean b, final int i,
                               final Rect rect) {
        //nothing to do here
    }

    private class PassCharSequence implements CharSequence {

        private final CharSequence charSequence;

        public PassCharSequence(final CharSequence charSequence) {
            this.charSequence = charSequence;
        }

        @Override
        public char charAt(final int index) {
            return DOT;
        }

        @Override
        public int length() {
            return charSequence.length();
        }

        @Override
        public CharSequence subSequence(final int start, final int end) {
            return new PassCharSequence(charSequence.subSequence(start, end));
        }
    }
}
}

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I came across this problem after needing to implement a pin-code type user interface. After the user entered 1 number (1:1 relationship between EditTexts and pin numbers for a total of 4 EditTexts) the password would remain "in the open". My solution was to implement a TextWatcher that replaced the input with bullets (•'s).

See the full answer here

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I was also facing same issues, in my case there was 3 edit text each edit text can have maximum 4 digit number for Aadhaar number. I used numberPassword input type.

When user type Aadhaar number very fast first edit text last text 4th was not hiding because I am changing focus when 4 digit completed. I have added text watcher.

I got solution at the end of last edit text when 4 digit completed I requestFocus for all 3 edit text one by one.

Solution :

  @Override
    public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        if (getBinding().edtFirstFourNumber.getText().toString().length() == 4 && getBinding().edtMiddleFourNumber.getText().toString().length() == 4 && getBinding().edtLastFourNumber.getText().toString().length() == 4) {
            //  getBinding().homeProceed.setAlpha(1f);
            getBinding().homeProceed.setTextColor(ContextCompat.getColor(mContext, R.color.color_ffffff));
            getBinding().homeProceed.setEnabled(true);
        } else {
            //  getBinding().homeProceed.setAlpha(0.5f);
            getBinding().homeProceed.setTextColor(ContextCompat.getColor(mContext, R.color.color_4090BE));
            getBinding().homeProceed.setEnabled(false);
        }
        if (getBinding().edtFirstFourNumber.length() == 4) {
            getBinding().edtMiddleFourNumber.requestFocus();
        }
        if (getBinding().edtMiddleFourNumber.length() == 4) {
            getBinding().edtLastFourNumber.requestFocus();
        }
        if (getBinding().edtLastFourNumber.length() == 4) {
            getBinding().edtFirstFourNumber.requestFocus();
            getBinding().edtMiddleFourNumber.requestFocus();
            getBinding().edtLastFourNumber.requestFocus();
            CommonUtils.hideSoftKeyboard(getActivity());
        }

    }