//获取按钮对象
        Button Aiyo = (Button)findViewById(R.id.button1);

        Aiyo.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {//tv.setText("woceshi");

                //弹出提示

                Toast.makeText(getApplicationContext(), '你好', Toast.LENGTH_SHORT).show();

            }

        });    

//创建一个窗体对象

Intent newWindow = new Intent();

newWindow.setClass(MainActivity.this, NewWindow.class);

//第一个是当前窗体类,第二个是新窗体类(窗体名称.class)

startActivity(newWindow);

//启动新窗体

Intent newWindow = new Intent();

newWindow.setClass(MainActivity.this, NewWindow.class);

//新开窗口传值

Bundle bundle = new Bundle();

bundle.putString("bundleKey", "zongwenlong");

newWindow.putExtras(bundle);

//新开窗口传值 end
//上面的三行赋值的代码其实有点复杂,也可以写成下面的
//新窗口传值1
newWindow.putExtra("key","value");
//新窗口传值1 end

startActivity(newWindow);

//获取前一个窗体传来的值

Bundle bundle = this.getIntent().getExtras();

Log.e("zllmsg", bundle.getString("bundleKey"));

//获取前一个窗体传来的值end    

Intent newWindow = new Intent();

newWindow.setClass(MainActivity.this, NewWindow.class);

//新开窗口传值

Bundle bundle = new Bundle();

bundle.putString("bundleKey", "zongwenlong");

newWindow.putExtras(bundle);

//新开窗口传值 end

//startActivity(newWindow);

startActivityForResult(newWindow, 1111);//这个1111是一个唯一码,还要用到

Intent intent = new Intent();

Bundle bundle = new Bundle();

bundle.putString("zllfanhui", "zonglonglongfanhui");

intent.putExtras(bundle);

setResult(1111, intent);

finish();

@Override

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        // TODO Auto-generated method stub

        super.onActivityResult(requestCode, resultCode, data);

        Log.e("zllmsg",data.getExtras().getString("zllfanhui"));

    }