TickerView Android

compile 'com.robinhood.ticker:ticker:1.0.0' 

activity_main

<?xml version="1.0" encoding="utf-8"?>

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 

 xmlns:app="http://schemas.android.com/apk/res-auto" 

 xmlns:tools="http://schemas.android.com/tools" 

 android:layout_width="match_parent" 

 android:layout_height="match_parent" 

 android:orientation="vertical">

    <TextView 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:layout_gravity="center" 

 android:text="TickerView" 

 android:textSize="30sp" />

    <com.robinhood.ticker.TickerView 

 android:id="@+id/tickerView" 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:layout_gravity="center" 

 android:layout_margin="20dp" />

    <Button 

 android:id="@+id/btnClick" 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:layout_gravity="center" 

 android:text="Click" />
    <Button 

 android:id="@+id/btnThread" 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:layout_gravity="center" 

 android:text="Start Thread" />
</LinearLayout>

MainActivity

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    String TAG = "MainActivity";
    int a = 0;
    private TickerView ticker1;
    private Button btnClick;
    private Button btnThread;
    private static final char[] NUMBER_LIST = TickerUtils.getDefaultNumberList();
    private Handler handler;
    boolean flag = false;

    @Override 

 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        handler = new Handler();
        btnClick = (Button) findViewById(R.id.btnClick);
        btnThread = (Button) findViewById(R.id.btnThread);
        btnClick.setOnClickListener(this);
        btnThread.setOnClickListener(this);
        ticker1 = (TickerView) findViewById(R.id.tickerView);
        ticker1.setCharacterList(NUMBER_LIST);
        ticker1.setAnimationDuration(500);
        ticker1.setTextColor(Color.parseColor("#FF0000"));
        ticker1.setTextSize(100);
        ticker1.setAnimationDuration(500);
        ticker1.setAnimationInterpolator(new OvershootInterpolator());
    }

    Runnable runnable = new Runnable() {
        @Override 

 public void run() {
            handler.postDelayed(runnable, 200);
            if (!flag) {
                a++;
                ticker1.setText("" + a);
            }
        }
    };

    @Override 

 protected void onPause() {
        super.onPause();
        flag = true;
    }

    @Override 

 public void onClick(View v) {
        if (v == btnClick) {
            a++;
            ticker1.setText("" + a);
        } else if (v == btnThread) {
            handler.post(runnable);
        }
    }
}