使用@available消除警告

TZImagePickerController/TZImagePickerController/TZImageManager.m

@@ -372,7 +372,7 @@ static dispatch_once_t onceToken;
         if (phAsset.mediaType == PHAssetMediaTypeVideo)      type = TZAssetModelMediaTypeVideo;
         else if (phAsset.mediaType == PHAssetMediaTypeAudio) type = TZAssetModelMediaTypeAudio;
         else if (phAsset.mediaType == PHAssetMediaTypeImage) {
-            if (iOS9_1Later) {
+            if (@available(iOS 9.1, *)) {
                 // if (asset.mediaSubtypes == PHAssetMediaSubtypePhotoLive) type = TZAssetModelMediaTypeLivePhoto;
             }
             // Gif
@@ -686,7 +686,7 @@ static dispatch_once_t onceToken;
 - (void)savePhotoWithImage:(UIImage *)image location:(CLLocation *)location completion:(void (^)(NSError *error))completion {
     if (iOS8Later) {
         [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
-            if (iOS9Later) {
+            if (@available(iOS 9, *)) {
                 NSData *data = UIImageJPEGRepresentation(image, 0.9);
                 PHAssetResourceCreationOptions *options = [[PHAssetResourceCreationOptions alloc] init];
                 options.shouldMoveFile = YES;
@@ -743,7 +743,7 @@ static dispatch_once_t onceToken;
 - (void)saveVideoWithUrl:(NSURL *)url location:(CLLocation *)location completion:(void (^)(NSError *error))completion {
     if (iOS8Later) {
         [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
-            if (iOS9Later) {
+            if (@available(iOS 9, *)) {
                 PHAssetResourceCreationOptions *options = [[PHAssetResourceCreationOptions alloc] init];
                 options.shouldMoveFile = YES;
                 PHAssetCreationRequest *request = [PHAssetCreationRequest creationRequestForAsset];

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -27,9 +27,6 @@
 
 #define iOS7Later ([UIDevice currentDevice].systemVersion.floatValue >= 7.0f)
 #define iOS8Later ([UIDevice currentDevice].systemVersion.floatValue >= 8.0f)
-#define iOS9Later ([UIDevice currentDevice].systemVersion.floatValue >= 9.0f)
-#define iOS9_1Later ([UIDevice currentDevice].systemVersion.floatValue >= 9.1f)
-#define iOS11Later ([UIDevice currentDevice].systemVersion.floatValue >= 11.0f)
 
 @class TZAlbumCell, TZAssetCell;
 @protocol TZImagePickerControllerDelegate;

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -118,7 +118,7 @@
 
 - (void)configBarButtonItemAppearance {
     UIBarButtonItem *barItem;
-    if (iOS9Later) {
+    if (@available(iOS 9, *)) {
         barItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[TZImagePickerController class]]];
     } else {
         barItem = [UIBarButtonItem appearanceWhenContainedIn:[TZImagePickerController class], nil];

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -61,7 +61,7 @@ static CGFloat itemMargin = 5;
         }
         _imagePickerVc.navigationBar.tintColor = self.navigationController.navigationBar.tintColor;
         UIBarButtonItem *tzBarItem, *BarItem;
-        if (iOS9Later) {
+        if (@available(iOS 9, *)) {
             tzBarItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[TZImagePickerController class]]];
             BarItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[UIImagePickerController class]]];
         } else {

TZImagePickerController/TZImagePickerController/TZPhotoPreviewCell.m

@@ -113,7 +113,7 @@
         _scrollView.delaysContentTouches = NO;
         _scrollView.canCancelContentTouches = YES;
         _scrollView.alwaysBounceVertical = NO;
-        if (iOS11Later) {
+        if (@available(iOS 11, *)) {
             _scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
         }
         [self addSubview:_scrollView];

TZImagePickerController/ViewController.m

@@ -66,7 +66,7 @@
         }
         _imagePickerVc.navigationBar.tintColor = self.navigationController.navigationBar.tintColor;
         UIBarButtonItem *tzBarItem, *BarItem;
-        if (iOS9Later) {
+        if (@available(iOS 9, *)) {
             tzBarItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[TZImagePickerController class]]];
             BarItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[UIImagePickerController class]]];
         } else {