allprojects {
	repositories {
		...
		maven { url 'https://jitpack.io' }
	}
}

dependencies {
        implementation 'com.github.darshan-miskin:PinView-Android:v1.1.8'
}

<com.gne.www.lib.PinView
    android:id="@+id/pinview"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:textColor="@color/colorAccent"
    app:pinCount="5"
    app:inputType="number"
    app:isPassword="false"
    app:showPasswordToggle="true"
    app:pinBackground="@drawable/pin_background"
    app:pinSize="30dp"
    app:passwordToggleSize="26dp"
    app:passwordToggleColor="@color/colorAccent"
    app:pinText="Hello"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintBottom_toBottomOf="parent"/>

    PinView pinView=findViewById(R.id.pinview);
    
    pinView.setPinCount(6);                      //set total number of pins
    pinView.setText("helllooo");                 //set text for the pinview
    pinView.setPinBackground(getResources().getDrawable(R.drawable.pin_background));  //pin style
    pinView.setPassword(false);                  //password flag. If true dotted format will be visible
    pinView.getText();                           //get text from pinview
    pinView.setPinSize(40);                      //set size of pin in dp
    pinView.setInputType(InputType.TYPE_TEXT);   // or InputType.TYPE_NUMBER
    pinView.setShowPasswordToggle(true);         //make the password toggle visible
    pinView.requestPinFocus();                   //request focus at zeroth position pin
    pinView.requestPinFocus(4);                  //request focus on pin at 4th index, defaults to zeroth if invalid index
    pinView.setPasswordToggleColor(getResources().getColor(R.color.colorPrimary)); //set toggle drawable tint/color
    pinView.setPinTextSize(23);                  //set pin text size in sp
    pinView.setPasswordToggleSize(20);           //set password toggle size in dp
    pinView.setTextColor(getResources().getColor(R.color.colorPrimary));  
    
    pinView.setOnPinCompletionListener(new OnPinCompletedListener() {
        @Override
        public void onPinCompleted(String entirePin) {
            Toast.makeText(MainActivity.this,"Text Entered",Toast.LENGTH_LONG).show();
        }
    });

MIT License

Copyright (c) 2019 Darshan Miskin

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.