来源: 互联网  发布时间: 2014-02-18

Pthread的相关资料
最近在看一些framework层的c++代码。会遇到AutoMutex，浏览了一下其源码，知道是pthread,就先把pthread的相关知识收集，方便以后学习它：
https://computing.llnl.gov/tutorials/pthreads/#PthreadsAPI
http://linux.sheup.com/linux/linux5115.htm
http://blogold.chinaunix.net/u3/111328/showart_2526774.html

    

    来源: 互联网  发布时间: 2014-02-18

利用DisplayMetrics获取屏幕信息

public static String getDisplayMetrics(Context cx) { 
    	   String str = ""; 
    	   DisplayMetrics dm = new DisplayMetrics(); 
    	   //取得DisplayMetrics对象方法一
     	   //dm = cx.getApplicationContext().getResources().getDisplayMetrics(); 
    	   //取得DisplayMetrics对象方法二
    	   ((Activity)cx).getWindowManager().getDefaultDisplay().getMetrics(dm);
    	   int screenWidth = dm.widthPixels; 
    	   int screenHeight = dm.heightPixels; 
    	   float density = dm.density; 
    	   float xdpi = dm.xdpi; 
    	   float ydpi = dm.ydpi; 
    	  
    	   str += "The absolute width:" + String.valueOf(screenWidth) + "pixels\n"; 
    	   str += "The absolute heightin:" + String.valueOf(screenHeight) + "pixels\n"; 
    	   str += "The logical density of the display.:" + String.valueOf(density) 
    	   + "\n"; 
    	   str += "X dimension :" + String.valueOf(xdpi) + "pixels per inch\n"; 
    	   str += "Y dimension :" + String.valueOf(ydpi) + "pixels per inch\n"; 
    	  
    	   return str; 
    	} 

 

    

    来源: 互联网  发布时间: 2014-02-18

修改dialog的大小
1.在manifest.xml中activity添加
android:theme="@android:style/Theme.Dialog"
2.WindowManager m = getWindowManager();
Display d = m.getDefaultDisplay(); //为获取屏幕宽、高

LayoutParams p = getWindow().getAttributes();  //获取对话框当前的参数值
p.height = (int) (d.getHeight() * 0.6);   //高度设置为屏幕的0.6
p.width = (int) (d.getWidth() * 0.95);    //宽度设置为屏幕的0.95

getWindow().setAttributes(p);     //设置生效