Android两个Activity跳转并使用Bundle传递数据

ActivityMain.java

Intent intent = new Intent();//生成一个Intent对象
intent.setClass(ActivityMain.this, SecActivity.class);//从ActivityMain跳转至SecActivity

//传递一个键值对
Bundle bundle=new Bundle();
bundle.putString("userName", strUserName);
intent.putExtras(bundle);

startActivity(intent);//启动跳转

SecActivity.java

//获取传递的数据
Bundle bundle=this.getIntent().getExtras();
String userName=bundle.getString("userName");