Android工程笔记：Intent介绍

由Intent来协助完成Android各个组件之间的通讯

实现页面之间的跳转

Intent intent = new Intent(MainActivity.this, SecondActivity.class);startActivity(intent);

启动一个带有返回值的页面

Intent intent = new Intent(MainActivity.this, SecondActivity.class);startActivityForResult(intent, 1);@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    if (requestCode == 1 && requestCode == 1) {        tv1.setText(data.getStringExtra("Data"));    }}Intent data = new Intent();data.putExtra("Data", s);setResult(1, data);finish();