//直接通过Intent发送

intent.putExtra("name","wytings");

//直接通过Intent接收
String mName= intent.getStringExtra("name");

//通过Bundle发送

Bundle bundle = new Bundle();

bundle.putString("NAME", "wytings");

intent.putExtras(bundle);

//通过Bundle接收

Bundle bundle = intent.getExtras();

String mName= bundle.getString("NAME");