新增可设置columnNumber的初始化方法，可自定义photoPicker页每行展示照片个数，默认为每行4个

TZImagePickerController/TZImagePickerController/TZImageManager.h

@@ -23,6 +23,10 @@
 /// Default is 600px / 默认600像素宽
 @property (nonatomic, assign) CGFloat photoPreviewMaxWidth;
 
+/// Default is 4, Use in photos collectionView in TZPhotoPickerController
+/// 默认4列, TZPhotoPickerController中的照片collectionView
+@property (nonatomic, assign) NSInteger columnNumber;
+
 /// Sort photos ascending by modificationDate，Default is YES
 /// 对照片排序，按修改时间升序，默认是YES。如果设置为NO,最新的照片会显示在最前面，内部的拍照按钮会排在第一个
 @property (nonatomic, assign) BOOL sortAscendingByModificationDate;

TZImagePickerController/TZImagePickerController/TZImageManager.m

@@ -29,8 +29,10 @@ static CGFloat TZScreenScale;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         manager = [[self alloc] init];
+        if (iOS8Later) {
             manager.cachingImageManager = [[PHCachingImageManager alloc] init];
             // manager.cachingImageManager.allowsCachingHighQualityImages = YES;
+        }
    
         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
@@ -38,13 +40,17 @@ static CGFloat TZScreenScale;
         if (TZScreenWidth > 700) {
             TZScreenScale = 1.5;
         }
-        CGFloat margin = 4;
-        CGFloat itemWH = (TZScreenWidth - 2 * margin - 4) / 4 - margin;
-        AssetGridThumbnailSize = CGSizeMake(itemWH * TZScreenScale, itemWH * TZScreenScale);
     });
     return manager;
 }
 
+- (void)setColumnNumber:(NSInteger)columnNumber {
+    _columnNumber = columnNumber;
+    CGFloat margin = 4;
+    CGFloat itemWH = (TZScreenWidth - 2 * margin - 4) / columnNumber - margin;
+    AssetGridThumbnailSize = CGSizeMake(itemWH * TZScreenScale, itemWH * TZScreenScale);
+}
+
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
 - (ALAssetsLibrary *)assetLibrary {

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -29,6 +29,7 @@
 
 /// Use this init method / 用这个初始化方法
 - (instancetype)initWithMaxImagesCount:(NSInteger)maxImagesCount delegate:(id<TZImagePickerControllerDelegate>)delegate;
+- (instancetype)initWithMaxImagesCount:(NSInteger)maxImagesCount columnNumber:(NSInteger)columnNumber delegate:(id<TZImagePickerControllerDelegate>)delegate;
 /// This init method just for previewing photos / 用这个初始化方法以预览图片
 - (instancetype)initWithSelectedAssets:(NSMutableArray *)selectedAssets selectedPhotos:(NSMutableArray *)selectedPhotos index:(NSInteger)index;
 
@@ -141,7 +142,7 @@
 
 
 @interface TZAlbumPickerController : UIViewController
-
+@property (nonatomic, assign) NSInteger columnNumber;
 @end
 
 

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -27,6 +27,9 @@
     
     UIStatusBarStyle _originStatusBarStyle;
 }
+/// Default is 4, Use in photos collectionView in TZPhotoPickerController
+/// 默认4列, TZPhotoPickerController中的照片collectionView
+@property (nonatomic, assign) NSInteger columnNumber;
 @end
 
 @implementation TZImagePickerController
@@ -80,7 +83,12 @@
 }
 
 - (instancetype)initWithMaxImagesCount:(NSInteger)maxImagesCount delegate:(id<TZImagePickerControllerDelegate>)delegate {
+    return [self initWithMaxImagesCount:maxImagesCount columnNumber:4 delegate:delegate];
+}
+
+- (instancetype)initWithMaxImagesCount:(NSInteger)maxImagesCount columnNumber:(NSInteger)columnNumber delegate:(id<TZImagePickerControllerDelegate>)delegate {
     TZAlbumPickerController *albumPickerVc = [[TZAlbumPickerController alloc] init];
+    albumPickerVc.columnNumber = columnNumber;
     self = [super initWithRootViewController:albumPickerVc];
     if (self) {
         self.maxImagesCount = maxImagesCount > 0 ? maxImagesCount : 9; // Default is 9 / 默认最大可选9张图片
@@ -100,6 +108,7 @@
         self.autoDismiss = YES;
         self.barItemTextFont = [UIFont systemFontOfSize:15];
         self.barItemTextColor = [UIColor whiteColor];
+        self.columnNumber = columnNumber;
         [self configDefaultImageName];
         
         if (![[TZImageManager manager] authorizationStatusAuthorized]) {
@@ -183,6 +192,7 @@
     if (_pushToPhotoPickerVc) {
         TZPhotoPickerController *photoPickerVc = [[TZPhotoPickerController alloc] init];
         photoPickerVc.isFirstAppear = YES;
+        photoPickerVc.columnNumber = self.columnNumber;
         [[TZImageManager manager] getCameraRollAlbum:self.allowPickingVideo allowPickingImage:self.allowPickingImage completion:^(TZAlbumModel *model) {
             photoPickerVc.model = model;
             [self pushViewController:photoPickerVc animated:YES];
@@ -255,6 +265,19 @@
     }
 }
 
+- (void)setColumnNumber:(NSInteger)columnNumber {
+    _columnNumber = columnNumber;
+    if (columnNumber <= 2) {
+        _columnNumber = 2;
+    } else if (columnNumber >= 6) {
+        _columnNumber = 6;
+    }
+    
+    TZAlbumPickerController *albumPickerVc = [self.childViewControllers firstObject];
+    albumPickerVc.columnNumber = _columnNumber;
+    [TZImageManager manager].columnNumber = _columnNumber;
+}
+
 - (void)setPhotoPreviewMaxWidth:(CGFloat)photoPreviewMaxWidth {
     _photoPreviewMaxWidth = photoPreviewMaxWidth;
     if (photoPreviewMaxWidth > 800) {
@@ -418,6 +441,7 @@
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
     TZPhotoPickerController *photoPickerVc = [[TZPhotoPickerController alloc] init];
+    photoPickerVc.columnNumber = self.columnNumber;
     TZAlbumModel *model = _albumArr[indexPath.row];
     photoPickerVc.model = model;
     __weak typeof(self) weakSelf = self;

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.h

@@ -12,6 +12,7 @@
 @interface TZPhotoPickerController : UIViewController
 
 @property (nonatomic, assign) BOOL isFirstAppear;
+@property (nonatomic, assign) NSInteger columnNumber;
 @property (nonatomic, strong) TZAlbumModel *model;
 
 @property (nonatomic, copy) void (^backButtonClickHandle)(TZAlbumModel *model);

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -110,26 +110,25 @@ static CGSize AssetGridThumbnailSize;
     TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
 
     UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
-    CGFloat margin = 4;
-    CGFloat itemWH = (self.view.tz_width - 2 * margin - 4) / 4 - margin;
+    CGFloat margin = 5;
+    CGFloat itemWH = (self.view.tz_width - (self.columnNumber + 1) * margin) / self.columnNumber;
     layout.itemSize = CGSizeMake(itemWH, itemWH);
     layout.minimumInteritemSpacing = margin;
     layout.minimumLineSpacing = margin;
-    CGFloat top = margin + 44;
+    CGFloat top = 44;
     if (iOS7Later) top += 20;
     CGFloat collectionViewHeight = tzImagePickerVc.maxImagesCount > 1 ? self.view.tz_height - 50 - top : self.view.tz_height - top;
-    _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(margin, top, self.view.tz_width - 2 * margin, collectionViewHeight) collectionViewLayout:layout];
+    _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, top, self.view.tz_width, collectionViewHeight) collectionViewLayout:layout];
     _collectionView.backgroundColor = [UIColor whiteColor];
     _collectionView.dataSource = self;
     _collectionView.delegate = self;
     _collectionView.alwaysBounceHorizontal = NO;
-    if (iOS7Later) _collectionView.contentInset = UIEdgeInsetsMake(0, 0, 0, 2);
-    _collectionView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 0, 0, -2);
+    _collectionView.contentInset = UIEdgeInsetsMake(margin, margin, margin, margin);
     
     if (_showTakePhotoBtn && tzImagePickerVc.allowTakePicture ) {
-        _collectionView.contentSize = CGSizeMake(self.view.tz_width, ((_model.count + 4) / 4) * self.view.tz_width);
+        _collectionView.contentSize = CGSizeMake(self.view.tz_width, ((_model.count + self.columnNumber) / self.columnNumber) * self.view.tz_width);
     } else {
-        _collectionView.contentSize = CGSizeMake(self.view.tz_width, ((_model.count + 3) / 4) * self.view.tz_width);
+        _collectionView.contentSize = CGSizeMake(self.view.tz_width, ((_model.count + self.columnNumber - 1) / self.columnNumber) * self.view.tz_width);
     }
     [self.view addSubview:_collectionView];
     [_collectionView registerClass:[TZAssetCell class] forCellWithReuseIdentifier:@"TZAssetCell"];

TZImagePickerController/TZImagePickerController/TZPhotoPreviewController.m

@@ -46,6 +46,7 @@
     [self configCollectionView];
     [self configCustomNaviBar];
     [self configBottomToolBar];
+    self.view.clipsToBounds = YES;
 }
 
 - (void)setPhotos:(NSMutableArray *)photos {

TZImagePickerController/ViewController.m

@@ -35,6 +35,7 @@
 @property (weak, nonatomic) IBOutlet UISwitch *allowPickingOriginalPhotoSwitch; ///< 允许选择原图
 @property (weak, nonatomic) IBOutlet UISwitch *showSheetSwitch; ///< 显示一个sheet,把拍照按钮放在外面
 @property (weak, nonatomic) IBOutlet UITextField *maxCountTF; ///< 照片最大可选张数，设置为1即为单选模式
+@property (weak, nonatomic) IBOutlet UITextField *columnNumberTF;
 @end
 
 @implementation ViewController
@@ -175,14 +176,14 @@
     if (self.maxCountTF.text.integerValue <= 0) {
         return;
     }
-    TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithMaxImagesCount:self.maxCountTF.text.integerValue delegate:self];
+    TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithMaxImagesCount:self.maxCountTF.text.integerValue columnNumber:self.columnNumberTF.text.integerValue delegate:self];
 
 #pragma mark - 四类个性化设置，这些参数都可以不传，此时会走默认设置
     imagePickerVc.isSelectOriginalPhoto = _isSelectOriginalPhoto;
 
     if (self.maxCountTF.text.integerValue > 1) {
-        // 1.如果你需要将拍照按钮放在外面，不要传这个参数
-        imagePickerVc.selectedAssets = _selectedAssets; // optional, 可选的
+        // 1.设置目前已经选中的图片数组
+        imagePickerVc.selectedAssets = _selectedAssets; // 目前已经选中的图片数组
     }
     imagePickerVc.allowTakePicture = self.showTakePhotoBtnSwitch.isOn; // 在内部显示拍照按钮