android开发分享Android如何解决虚拟按键栏遮挡问题

  public class screenutils {    //获取虚拟按键的高度    public static int getnavigationbarheight(context context) {      int result = 0;      if (hasnavbar(context)) {        resources res = context.getresources();        int resourceid = res.getidentifier("navigation_bar_height", "dimen", "android");        if (resourceid > 0) {          result = res.getdimensionpixelsize(resourceid);        }      }      return result;    }      /**     * 检查是否存在虚拟按键栏     *     * @param context     * @return     */    @targetapi(build.version_codes.ice_cream_sandwich)    public static boolean hasnavbar(context context) {      resources res = context.getresources();//读取系统资源函数      int resourceid = res.getidentifier("config_shownavigationbar", "bool", "android");//获取资源id      if (resourceid != 0) {        boolean hasnav = res.getboolean(resourceid);        // check override flag        string snavbaroverride = getnavbaroverride();        if ("1".equals(snavbaroverride)) {          hasnav = false;        } else if ("0".equals(snavbaroverride)) {          hasnav = true;        }        return hasnav;      } else { // fallback        return !viewconfiguration.get(context).haspermanentmenukey();      }    }      /**     * 判断虚拟按键栏是否重写     * @return     */    private static string getnavbaroverride() {      string snavbaroverride = null;      if (build.version.sdk_int >= build.version_codes.kitkat) {        try {          class c = class.forname("android.os.systemproperties");          method m = c.getdeclaredmethod("get", string.class);          m.setaccessible(true);          snavbaroverride = (string) m.invoke(null, "qemu.hw.mainkeys");        } catch (throwable e) {        }      }      return snavbaroverride;    }  }

  //处理虚拟按键  //判断用户手机机型是否有虚拟按键栏          if(screenutils.hasnavbar(getapplicationcontext())){    setnavigationbar();    }     //处理虚拟按键   private void setnavigationbar() {    int barheight = screenutils.getnavigationbarheight(getapplicationcontext());    linearlayout.layoutparams barparams = new linearlayout.layoutparams(viewgroup.layoutparams.match_parent,viewgroup.layoutparams.wrap_content);    textview tv = new textview(this);    tv.setheight(barheight);    tv.setwidth(viewgroup.layoutparams.match_parent);    tv.setbackgroundcolor(color.black);    llnavigationbar.addview(tv,barparams);   }