修复选择图片瞬间内存过高的问题

TZImagePickerController/TZImagePickerController/TZImageManager.h

@@ -20,7 +20,7 @@
 
 @property (nonatomic, assign) BOOL shouldFixOrientation;
 
-/// Default is 540px / 默认540像素宽
+/// Default is 600px / 默认600像素宽
 @property (nonatomic, assign) CGFloat photoPreviewMaxWidth;
 
 /// Return YES if Authorized 返回YES如果得到了授权

TZImagePickerController/TZImagePickerController/TZImageManager.m

@@ -32,8 +32,8 @@ static CGFloat TZScreenScale;
         TZScreenWidth = [UIScreen mainScreen].bounds.size.width;
         // 测试发现，如果scale在plus真机上取到3.0，内存会增大特别多。故这里写死成2.0
         TZScreenScale = 2.0;
-        if (TZScreenWidth > 600) {
-            TZScreenScale = 1.0;
+        if (TZScreenWidth > 700) {
+            TZScreenScale = 1.5;
         }
         CGFloat margin = 4;
         CGFloat itemWH = (TZScreenWidth - 2 * margin - 4) / 4 - margin;
@@ -336,7 +336,9 @@ static CGFloat TZScreenScale;
             CGFloat pixelHeight = photoWidth / aspectRatio;
             imageSize = CGSizeMake(pixelWidth, pixelHeight);
         }
-       PHImageRequestID imageRequestID = [[PHImageManager defaultManager] requestImageForAsset:asset targetSize:imageSize contentMode:PHImageContentModeAspectFill options:nil resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
+        PHImageRequestOptions *option = [[PHImageRequestOptions alloc] init];
+        option.resizeMode = PHImageRequestOptionsResizeModeFast;
+        PHImageRequestID imageRequestID = [[PHImageManager defaultManager] requestImageForAsset:asset targetSize:imageSize contentMode:PHImageContentModeAspectFill options:option resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
             BOOL downloadFinined = (![[info objectForKey:PHImageCancelledKey] boolValue] && ![info objectForKey:PHImageErrorKey]);
             if (downloadFinined && result) {
                 result = [self fixOrientation:result];
@@ -346,6 +348,7 @@ static CGFloat TZScreenScale;
             if ([info objectForKey:PHImageResultIsInCloudKey] && !result) {
                 PHImageRequestOptions *option = [[PHImageRequestOptions alloc]init];
                 option.networkAccessAllowed = YES;
+                option.resizeMode = PHImageRequestOptionsResizeModeFast;
                 [[PHImageManager defaultManager] requestImageDataForAsset:asset options:option resultHandler:^(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info) {
                     UIImage *resultImage = [UIImage imageWithData:imageData scale:0.1];
                     resultImage = [self scaleImage:resultImage toSize:imageSize];

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -37,7 +37,7 @@
 /// Default is 828px / 默认828像素宽
 @property (nonatomic, assign) CGFloat photoWidth;
 
-/// Default is 520px / 默认540像素宽
+/// Default is 600px / 默认600像素宽
 @property (nonatomic, assign) CGFloat photoPreviewMaxWidth;
 
 /// Default is 15, While fetching photo, HUD will dismiss automatic if timeout;

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -88,7 +88,7 @@
         self.allowTakePicture = YES;
         self.timeout = 15;
         self.photoWidth = 828.0;
-        self.photoPreviewMaxWidth = 540;
+        self.photoPreviewMaxWidth = 600;
         
         if (![[TZImageManager manager] authorizationStatusAuthorized]) {
             _tipLable = [[UILabel alloc] init];
@@ -120,7 +120,7 @@
         self.timeout = 15;
         self.photoWidth = 828.0;
         self.maxImagesCount = selectedAssets.count;
-        self.photoPreviewMaxWidth = 540;
+        self.photoPreviewMaxWidth = 600;
         
         previewVc.photos = [NSMutableArray arrayWithArray:selectedPhotos];
         previewVc.currentIndex = index;