修复PHAuthorizationStatusLimited权限下的列表页图片不显示和拍照crash问题

TZImagePickerController/TZImagePickerController/TZAssetCell.m

@@ -41,6 +41,7 @@
         // Set the cell's thumbnail image if it's still showing the same asset.
         if ([self.representedAssetIdentifier isEqualToString:model.asset.localIdentifier]) {
             self.imageView.image = photo;
+            [self setNeedsLayout];
         } else {
             // NSLog(@"this cell is showing other asset");
             [[PHImageManager defaultManager] cancelImageRequest:self.imageRequestID];
@@ -360,8 +361,8 @@
         _selectImageView.contentMode = UIViewContentModeScaleAspectFit;
     }
     _indexLabel.frame = _selectImageView.frame;
-    _imageView.frame = CGRectMake(0, 0, self.tz_width, self.tz_height);
-    
+    _imageView.frame = self.bounds;
+
     static CGFloat progressWH = 20;
     CGFloat progressXY = (self.tz_width - progressWH) / 2;
     _progressView.frame = CGRectMake(progressXY, progressXY, progressWH, progressWH);
@@ -413,6 +414,7 @@
     self.titleLabel.attributedText = nameString;
     [[TZImageManager manager] getPostImageWithAlbumModel:model completion:^(UIImage *postImage) {
         self.posterImageView.image = postImage;
+        [self setNeedsLayout];
     }];
     if (model.selectedCount) {
         self.selectedCountButton.hidden = NO;

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -826,8 +826,11 @@ static CGFloat itemMargin = 5;
         NSDictionary *meta = [info objectForKey:UIImagePickerControllerMediaMetadata];
         if (photo) {
             [[TZImageManager manager] savePhotoWithImage:photo meta:meta location:self.location completion:^(PHAsset *asset, NSError *error){
-                if (!error) {
+                if (!error && asset) {
                     [self addPHAsset:asset];
+                } else {
+                    TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
+                    [tzImagePickerVc hideProgressHUD];
                 }
             }];
             self.location = nil;