[jira] [Created] (WEEX-157) page refresh in the background led to size calculation error

["fang (JIRA)" <ji...@apache.org>]

fang created WEEX-157:
-------------------------

             Summary: page refresh in the background led to size calculation error
                 Key: WEEX-157
                 URL: https://issues.apache.org/jira/browse/WEEX-157
             Project: Weex
          Issue Type: Bug
          Components: Android
    Affects Versions: 0.16
            Reporter: fang
            Assignee: zhengshihan
         Attachments: 111.png, 222.png, 333.png, 444.png

1、the problem
Weex page to open a horizontal screen app (such as the king of glory), wait for the refresh and then returned to weex page and found that the page rendering error.After refreshing no problem

2、the sample page
http://dotwe.org/vue/e791636641f85320c8d589d3ea2984fe

3、reproduce the steps
*Click on the first green block*
*Switch to any horizontal screen app*
*After the "change width" toast switch will weex page found layout error*
*The page appears normal after toast again*
4、 the problem code
WXViewUtils.java

  public static int getScreenWidth (Context ctx) {
    if (ctx! = null) {
      Resources res = ctx.getResources ();
      mScreenWidth = res.getDisplayMetrics (). widthPixels;
      if (WXEnvironment.SETTING_FORCE_VERTICAL_SCREEN) {
        mScreenHeight = res
                .getDisplayMetrics ()
                .heightPixels;
        mScreenWidth = mScreenHeight> mScreenWidth? mScreenWidth: mScreenHeight;
      }
    } else if (WXEnvironment.isApkDebugable ()) {
      throw new WXRuntimeException ("Error Context is null When getScreenHeight");
    }
    return mScreenWidth;
  }
In the horizontal screen app, weex calculated the screen width in the background to the screen height, resulting in a calculation error

5、 there is a problem screenshots
!111.png|thumbnail!
!222.png|thumbnail!
!333.png|thumbnail!
!444.png|thumbnail!



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