1、通过一个Data.java实例类,可以实现全局数据保存,这里就不多说了,学Java的都知道。
2、Android特有的Application,是应用的入口,运行贯穿整个app运行过程,可以在这个类中定义全局变量
public class baseApplication extends Application { private float screenWidth; private float screenHeight; public float getScreenWidth() { return screenWidth; } public void setScreenWidth(float screenWidth) { this.screenWidth = screenWidth; } public float getScreenHeight() { return screenHeight; } public void setScreenHeight(float screenHeight) { this.screenHeight = screenHeight; } }
使用时候直接调用:
baseApplication b=(baseApplication) getApplicationContext(); float width=b.getScreenWidth(); float height=b.getScreenHeight();