修改is_first逻辑

GMBase/Classes/WMBaseViewController.m

@@ -66,11 +66,6 @@
     [self initRefererLink];
     [self initReferrerTabName];
     [self setupEmptyView];
-    //从后台进到前台需要将is_first置为0
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(baseViewControllerWillEnterForeground) name:UIApplicationWillEnterForegroundNotification object:nil];
-}
-- (void)baseViewControllerWillEnterForeground {
-    self.isFirst = 0;
 }
 - (void)setupEmptyView {
     _emptyView = [[GMEmptyView alloc] initWithFrame:CGRectZero];
@@ -119,7 +114,6 @@
 - (void)viewWillDisappear:(BOOL)animated
 {
     [super viewWillDisappear:animated];
-    self.isFirst = 0;
     [[Phobos sharedClient] onPVEnd:self];
 }