新增一些测试代码，尝试复现某些问题

TZImagePickerController/AppDelegate.m

@@ -7,6 +7,7 @@
 //
 
 #import "AppDelegate.h"
+#import "TZImagePickerController.h"
 
 @interface AppDelegate ()
 
@@ -16,9 +17,51 @@
 
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+    // 打开下面这句代码，使用导航栏控制器作为rootViewController
+    // [self useNavControllerAsRoot];
     return YES;
 }
 
+- (void)useNavControllerAsRoot {
+    UIViewController *vc = [[UIViewController alloc] init];
+    vc.view.backgroundColor = [UIColor whiteColor];
+
+    UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(20, 200, 300, 44)];
+    [btn setTitle:@"pushTZImagePickerController" forState:UIControlStateNormal];
+    [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
+    [btn addTarget:self action:@selector(pushTZImagePickerController) forControlEvents:UIControlEventTouchUpInside];
+    [vc.view addSubview:btn];
+
+    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:vc];
+    nav.navigationBar.barStyle = UIBarStyleBlack;
+    nav.navigationBar.translucent = YES;
+    nav.navigationBar.barTintColor = [UIColor colorWithRed:(34/255.0) green:(34/255.0)  blue:(34/255.0) alpha:1.0];
+    nav.navigationBar.tintColor = [UIColor blackColor];
+    if (@available(iOS 13.0, *)) {
+        UINavigationBarAppearance *barAppearance = [[UINavigationBarAppearance alloc] init];
+        if (nav.navigationBar.isTranslucent) {
+            UIColor *barTintColor = nav.navigationBar.barTintColor;
+            barAppearance.backgroundColor = [barTintColor colorWithAlphaComponent:0.85];
+        } else {
+            barAppearance.backgroundColor = nav.navigationBar.barTintColor;
+        }
+        barAppearance.titleTextAttributes = nav.navigationBar.titleTextAttributes;
+        nav.navigationBar.standardAppearance = barAppearance;
+        nav.navigationBar.scrollEdgeAppearance = barAppearance;
+    }
+    [nav setNavigationBarHidden:YES];
+
+    self.window.rootViewController = nav;
+    [self.window makeKeyAndVisible];
+}
+
+- (void)pushTZImagePickerController {
+    TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithMaxImagesCount:9 columnNumber:4 delegate:nil pushPhotoPickerVc:YES];
+    imagePickerVc.modalPresentationStyle = UIModalPresentationFullScreen;
+    UINavigationController *nav = (UINavigationController *)[UIApplication sharedApplication].keyWindow.rootViewController;
+    [nav.topViewController presentViewController:imagePickerVc animated:YES completion:nil];
+}
+
 - (void)applicationWillResignActive:(UIApplication *)application {
 
 }