优化设置navigationBar的translucent为NO时的情形

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -142,9 +142,7 @@ static CGSize AssetGridThumbnailSize;
         if (iOS7Later && !TZ_isGlobalHideStatusBar) top += 20;
         collectionViewHeight = tzImagePickerVc.showSelectBtn ? self.view.tz_height - 50 - top : self.view.tz_height - top;;
     } else {
-        CGFloat navigationHeight = 44;
-        if (iOS7Later && !TZ_isGlobalHideStatusBar) navigationHeight += 20;
-        collectionViewHeight = tzImagePickerVc.showSelectBtn ? self.view.tz_height - 50 - navigationHeight : self.view.tz_height - navigationHeight;
+        collectionViewHeight = tzImagePickerVc.showSelectBtn ? self.view.tz_height - 50 : self.view.tz_height;
     }
     
     _collectionView = [[TZCollectionView alloc] initWithFrame:CGRectMake(0, top, self.view.tz_width, collectionViewHeight) collectionViewLayout:layout];

TZImagePickerController/ViewController.m

@@ -203,7 +203,7 @@
         return;
     }
     TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithMaxImagesCount:self.maxCountTF.text.integerValue columnNumber:self.columnNumberTF.text.integerValue delegate:self pushPhotoPickerVc:YES];
-    
+    // imagePickerVc.navigationBar.translucent = NO;
     
 #pragma mark - 四类个性化设置，这些参数都可以不传，此时会走默认设置
     imagePickerVc.isSelectOriginalPhoto = _isSelectOriginalPhoto;