add somethings you don't know with studio

CharonChui · CharonChui · commit f90bdb731170 · 2016-06-08T18:42:53.000+08:00
diff --git a/Android基础/屏幕适配.md b/Android基础/屏幕适配.md
@@ -145,11 +145,12 @@ QHD       960*540
 
  
 |分辨率对应DPI |     像素密   | 通常的分辨率  | 比例大小|
+| ---------- |:----------:|:----------:|-----------:|
 |HVGA|    mdpi    | 160dpi  | 320*480 |      1|
 |WVGA |   hdpi  |   240dpi |  480*800  |     1.5|
-720P    |xhdpi   | 320dpi  | 720*1280    |  2  |
-1080P   |xxhdpi  | 480dpi  | 1080*1920  |   3 |
-    |    xxxhdpi | 640dpi   |          |    4 |
+|720P    |xhdpi   | 320dpi  | 720*1280    |  2  |
+|1080P   |xxhdpi  | 480dpi  | 1080*1920  |   3 |
+|  xx  |    xxxhdpi | 640dpi   |          |    4 |
 
 ![image](https://raw.githubusercontent.com/CharonChui/Pictures/master/xhdpi.jpg?raw=true)    
 
