标签：android开发
你需要重写 onSaveInstanceState(Bundle savedInstanceState)，把你想要保存的状态写入到 Bundle 中，如下
|
1
2
3
4
5
6
7
8
9
10
11
12
|
@Overridepublic
void onSaveInstanceState(Bundle savedInstanceState) {super.onSaveInstanceState(savedInstanceState);// Save UI state changes to the savedInstanceState.// This bundle will be passed to onCreate if the process is// killed and restarted.savedInstanceState.putBoolean("MyBoolean",
true);savedInstanceState.putDouble("myDouble",
1.9);savedInstanceState.putInt("MyInt",
1);savedInstanceState.putString("MyString",
"Welcome back to Android");// etc.} |
Bundle 的本质是键值对的方式存储，你可以通过 onCreate()和 onRestoreInstanceState() 或的对应的值
|
1
2
3
4
5
6
7
8
9
10
|
@Overridepublic
void onRestoreInstanceState(Bundle savedInstanceState) {super.onRestoreInstanceState(savedInstanceState);// Restore UI state from the savedInstanceState.// This bundle has also been passed to onCreate.boolean
myBoolean = savedInstanceState.getBoolean("MyBoolean");double
myDouble = savedInstanceState.getDouble("myDouble");int
myInt = savedInstanceState.getInt("MyInt");String myString = savedInstanceState.getString("MyString");} |
您通常会使用这项技术来存储实例的值的应用程序（选择，未保存的文本等）。
原文地址：http://www.itmmd.com/201410/38.html
该文章由 萌萌的IT人 整理发布,转载须标明出处。
标签：android开发
原文地址：http://blog.csdn.net/androidmylove/article/details/42024389
