光环前端优化汇总（2020年2月第3周）4 https://gitlab.ghzs.com/pm/halo-app-issues/issues/791

app/src/main/java/com/gh/common/util/DisplayUtils.java

@@ -13,6 +13,7 @@ import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
+import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
 
@@ -237,6 +238,18 @@ public class DisplayUtils {
         return (resourceId > 0 && hasSoftKeys(context)) ? resources.getDimensionPixelSize(resourceId) : 0;
     }
 
+    //判断导航栏是否显示
+    public static boolean isNavigationBarShow(Activity activity) {
+        ViewGroup vp = (ViewGroup) activity.getWindow().getDecorView();
+        for (int i = 0; i < vp.getChildCount(); i++) {
+            View child = vp.getChildAt(i);
+            if (child.getId() != -1 && "navigationBarBackground".equals(activity.getResources().getResourceEntryName(child.getId())) && child.getMeasuredHeight() != 0) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public static boolean hasSoftKeys(Context context) {
         if (!(context instanceof Activity)) return false;