在获取新的cachedImage之前先把旧的清空掉

TZImagePickerController.xcodeproj/project.pbxproj

@@ -451,7 +451,7 @@
 				TargetAttributes = {
 					900E657B1C2BB8D5003D9A9E = {
 						CreatedOnToolsVersion = 7.2;
-						DevelopmentTeam = W3JQFZCRV5;
+						DevelopmentTeam = T86X98NCU2;
 						ProvisioningStyle = Automatic;
 					};
 					900E65941C2BB8D5003D9A9E = {
@@ -752,7 +752,7 @@
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
-				DEVELOPMENT_TEAM = W3JQFZCRV5;
+				DEVELOPMENT_TEAM = T86X98NCU2;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/TZImagePickerController",
@@ -775,7 +775,7 @@
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
-				DEVELOPMENT_TEAM = W3JQFZCRV5;
+				DEVELOPMENT_TEAM = T86X98NCU2;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/TZImagePickerController",

TZImagePickerController/TZImagePickerController/TZAssetCell.m

@@ -35,6 +35,7 @@
     if (self.useCachedImage && model.cachedImage) {
         self.imageView.image = model.cachedImage;
     } else {
+        self.model.cachedImage = nil;
         int32_t imageRequestID = [[TZImageManager manager] getPhotoWithAsset:model.asset photoWidth:self.tz_width completion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
             if (self->_progressView) {
                 self.progressView.hidden = YES;

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -606,7 +606,7 @@ static CGFloat itemMargin = 5;
 - (void)setUseCachedImageAndReloadData {
     self.useCachedImage = YES;
     [self.collectionView reloadData];
-    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
         self.useCachedImage = NO;
     });
 }