package allegro.test2;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        LinearLayout layout=new LinearLayout(this);

        super.setContentView(layout);

        layout.setOrientation(LinearLayout.VERTICAL);

        final TextView show=new TextView(this);

        Button bn=new Button(this);

        bn.setText("lxy btn"); //R.string.app_name);

        bn.setLayoutParams(

                new ViewGroup.LayoutParams(

                ViewGroup.LayoutParams.WRAP_CONTENT,

                ViewGroup.LayoutParams.WRAP_CONTENT));

        layout.addView(show);

        layout.addView(bn);

        bn.setOnClickListener(new View.OnClickListener()

        {

            @Override

            public  void onClick(View v)

            {

                show.setText("Hello,android,"+new java.util.Date());

            }

        });

        //setContentView(R.layout.activity_main);

    }

}