Android 根据屏幕大小设置字体

	public static int adjustFontSize(int screenWidth, int screenHeight){
		
		if (screenWidth <= 240) { 		// 240X320 屏幕
			
			return 10;

		}else if (screenWidth <= 320){	// 320X480 屏幕

			return 14;

		}else if (screenWidth <= 480){	// 480X800 或 480X854 屏幕

			return 24;

		}else if (screenWidth <= 540){	// 540X960 屏幕 

			return 26;
			
		}else if(screenWidth <= 800){	// 800X1280 屏幕 

			return 30;
			
		}else{							// 大于 800X1280

			return 30;
			
		}
	}