Activity间用Intent和Bundle传递参数

传递方：

//点击btn_sub传递 fieldHeight.getText()和 fieldWeight.getText()

 private void setListeners()

    {

     btn_sub.setOnClickListener(calrBMI); 

    }

    private OnClickListener calrBMI = new OnClickListener()

    {

     public void onClick(View v)

     {

       Intent intent = new Intent();

       Bundle bundle = new Bundle();

       bundle.putString("key_height", fieldHeight.getText().toString());

       bundle.putString("key_weight", fieldWeight.getText().toString());

       intent.setClass(ActivityMain.this,Report.class);

       intent.putExtras(bundle);

       startActivity(intent);         

     }    

    };

接收方：

         Bundle bundle = new Bundle();

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

         double height = Double.parseDouble(bundle.getString("key_height"))/100;

         double weight = Double.parseDouble(bundle.getString("key_weight"));