Android pad动态适配方案

转载请注明出处：http://blog.csdn.net/devilnov/article/details/44835243

import android.content.pm.ActivityInfo;
import android.view.Display;
import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;

/**
 * 动态适配
 * 屏幕长宽按比例缩放
 * @author Administrator
 *
 */
public class UiScaleUtil {

	/**
	 * pad版的缩放比例
	 * w 长边
	 * h 短边
	 */
	public final static double PAD_SCALE_LONGGER = 0.9;
	public final static double PAD_SCALE_LONG = 0.8;
	public final static double PAD_SCALE_SHORT = 0.6;

	/**
	 * 对dialog的 w 进行动态缩放
	 * @param window
	 * @param orientation
	 */
	public static void scaleDialog(Window window, int orientation){
		WindowManager m = window.getWindowManager();
		Display d = m.getDefaultDisplay(); // 获取屏幕宽、高用
		WindowManager.LayoutParams p = window.getAttributes(); // 获取对话框当前的参数值
		double scaleW = 1;
		if (orientation == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {
			scaleW = UiScaleUtil.PAD_SCALE_SHORT;
		} else {
			scaleW = UiScaleUtil.PAD_SCALE_LONG;
		}
		int frameWidth = (int) (d.getWidth() * scaleW);
		if (frameWidth < 600) {
			frameWidth = (int) (d.getWidth() * UiScaleUtil.PAD_SCALE_LONGGER);
		}
		p.width = (int) (frameWidth / 2); // 宽度设置为屏幕缩放比例的一半，即收银台宽度的一半

		window.setAttributes(p);
		window.setGravity(Gravity.CENTER);
	}
	/**
	 * 对activity的 w 和 h 进行动态缩放
	 * @param window
	 * @param orientation
	 */
	public static void scaleActivity(Window window, int orientation){
		WindowManager m = window.getWindowManager();
        Display d = m.getDefaultDisplay();  //为获取屏幕宽、高
        LayoutParams p = window.getAttributes();  //获取对话框当前的参数值
        double scaleH = 1;
        double scaleW = 1;
        if(orientation == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE){
        	scaleH = UiScaleUtil.PAD_SCALE_LONG;
            scaleW = UiScaleUtil.PAD_SCALE_SHORT;
        }else{
        	scaleH = UiScaleUtil.PAD_SCALE_SHORT;
            scaleW = UiScaleUtil.PAD_SCALE_LONG;
        }
        p.height = (int) (d.getHeight() * scaleH);   //高度设置为屏幕实际宽度的比例
        p.width = (int) (d.getWidth() * scaleW);    //宽度设置为屏幕实际宽度的比例
        if(d.getHeight() > d.getWidth()){
            if(p.width < 600){
            	p.width = (int) (d.getWidth() * UiScaleUtil.PAD_SCALE_LONGGER);
            }
        }else if(d.getHeight() < d.getWidth()){
        	if(p.height < 600){
            	p.height = (int) (d.getHeight() * UiScaleUtil.PAD_SCALE_LONGGER);
            }
        }

        p.alpha = 1.0f;                //设置本身透明度
        p.dimAmount = 0.0f;                //设置黑暗度
        window.setAttributes(p);     //设置生效
        window.setGravity(Gravity.CENTER);                 //设置靠右对齐
	}
}