Android之获取屏幕和视图高和宽

在android中，画布Canvas的高宽其实是屏幕的高宽。 

1.

  

   

    

     

    
    

     

      WindowManager windowManager = getWindowManager();   
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      Display display = windowManager.getDefaultDisplay();   
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      screenWidth = display.getWidth();   
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      screenHeight = display.getHeight();  
     
    
  
 

  

   

    

     

    
    

     

      DisplayMetrics dm = new DisplayMetrics();  
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      this.getWindowManager().getDefaultDisplay().getMetrics(dm);//this指当前activity  
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      screenWidth =dm.widthPixels;  
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      screenHeight =dm.heightPixels;  
     
    
  
 

还可以在onDraw中由canvas来获得

  

   

    

     

    
    

     

      viewWidth=this.getWidth();   
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      viewHeight=this.getHeight();  
     
    
  
 

  

   

    

     

    
    

     

      protected void onSizeChanged(int w, int h, int oldw, int oldh) {   
     
    
   

    

     

    
    

     

      viewHeight=h;   
     
    
   

    

     

    
    

     

      viewWidth=w;   
     
    
   

    

     

    
    

     

      super.onSizeChanged(w, h, oldw, oldh);   
     
    
   

    

     

    
    

     

      }  
     
    
  
 

requestWindowFeature(Window.FEATURE_NO_TITLE);  
 

1. setRequesteOrientation(ActivityInfo.SCREEN_ORIENTATION_LADSCAPE);  

文章来源: chenyu.blog.csdn.net，作者：chen.yu，版权归原作者所有，如需转载，请联系作者。

原文链接：chenyu.blog.csdn.net/article/details/49892787