android 变量支持中文吗,全局共享变量(Android)

在安卓中一种比较好的储存全局共享变量的方法是继承Application,将全局变量写入继承的Application类中,然后在Activity或Service中通过getApplication()方法来获全局变量中.形如以下用法:

//MyApplication.java

public class MyApplication extends Application{

public WeakReference d;

public void setMyPublicData(MyPublicData _d){

d = null;

d = new WeakReference(_d);

}

public MyPublicData getMyPublicData(){

return d.get();

}

}

//Activity_1.java

d = new MyPublicData(this);

((MyApplication)this.getApplication()).setMyPublicData(d);

//Activity_2.java

MyPublicData d = ((MyApplication)this.getApplication()).getMyPublicData();

最后在manifest中application标签上加入name项:

...

android:name=".MyApplication">

我的个人习惯是用一个MyPublicData来储存各种全局变量,这样比较符合语义而且比较容易修改.

例子中在Activity_1中初始化MyPublicData是因为项目设计因素,个人建议将MyPublicData的初始化放在MyApplication的OnCreate中.