ProgressDialog

public class MainActivity extends AppCompatActivity {
    ProgressDialog progressDialog=null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button button=(Button)findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                progressDialog=ProgressDialog.show(MainActivity.this,"title","message",true);

                new Thread(){
                    @Override
                    public void run() {
                        try {
                            Thread.sleep(10000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }finally {
                            progressDialog.dismiss();
                        }
                    }
                }.start();
            }
        });
    }
}