用纯JAVA代码来创建视图

package com.kale.codeview;



import android.os.Bundle;

import android.support.v7.app.ActionBarActivity;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.TextView;

import android.widget.Toast;



public class MainActivity extends ActionBarActivity {



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        //定义一个父控件

        LinearLayout layout = new LinearLayout(this);

        //设置activity显示的layout

        super.setContentView(layout);

        //设置linearLayout的方向

        layout.setOrientation(LinearLayout.VERTICAL);

        //new 一个textview

        final TextView show = new TextView(this);

        //new 一个button

        Button bn = new Button(this);

        bn.setText(R.string.app_name);

        //设置button的排列方式

        bn.setLayoutParams(new ViewGroup.LayoutParams(

                ViewGroup.LayoutParams.WRAP_CONTENT,

                ViewGroup.LayoutParams.WRAP_CONTENT));

        //添加视图

        layout.addView(show);

        layout.addView(bn);

        

        bn.setOnClickListener(new OnClickListener() {

            

            @Override

            public void onClick(View arg0) {

                // TODO 自动生成的方法存根

                show.setText("Time is "+ new java.util.Date());

                Toast.makeText(MainActivity.this, "CodeView", 0).show();

            }

        });

    }





}