两个Activity之间传递对象

本文详细介绍了如何在Android应用中实现两个Activity之间的数据传递,包括使用Bundle封装和序列化接口Serializable进行对象和ArrayList的跨Activity共享。

1:把MainActivity的一个对象传到SecondActivity
1:MainActivity

//Game类需要实现Serializable接口
Game g = new Game();
Intent i = new Intent();                    
i.setClass(MainActivity.this, SecondActivity.class);
Bundle b = new Bundle();
b.putSerializable("game", g;
i.putExtras(b);
startActivity(i);

2:SecondActivity

Bundle b = getIntent().getExtras();
Game g  = (Game) b.getSerializable("game");

2:两个Activity之间传递ArrayList

//两边均为ArrayList
ArrayList<HashMap<String, String>> list = new   ArrayList<HashMap<String, String>>();
Intent intent = new Intent();
intent.setClass(FindActivity.this, ChartActivity.class);
intent.putExtra("list",list);
startActivity(intent);

接收

Intent i = getIntent();
ArrayList<HashMap<String, String>> list  = (ArrayList<HashMap<String, String>>)i.getSerializableExtra("list");