Android全局变量使用

1、通过一个Data.java实例类,能够实现全局数据保存,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,执行贯穿整个app执行过程,能够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();





原文地址:https://www.cnblogs.com/mengfanrong/p/3807407.html