优化权限判断相关代码

TZImagePickerController/TZImagePickerController/TZImageManager.h

@@ -45,7 +45,7 @@
 - (void)getOriginalPhotoWithAsset:(id)asset completion:(void (^)(UIImage *photo,NSDictionary *info))completion;
 
 /// Save photo 保存照片
-- (void)savePhotoWithImage:(UIImage *)image completion:(void (^)())completion;
+- (void)savePhotoWithImage:(UIImage *)image completion:(void (^)(NSError *error))completion;
 
 /// Get video 获得视频
 - (void)getVideoWithAsset:(id)asset completion:(void (^)(AVPlayerItem * playerItem, NSDictionary * info))completion;

TZImagePickerController/TZImagePickerController/TZImageManager.m

@@ -509,7 +509,7 @@ static CGFloat TZScreenScale;
 
 #pragma mark - Save photo
 
-- (void)savePhotoWithImage:(UIImage *)image completion:(void (^)())completion {
+- (void)savePhotoWithImage:(UIImage *)image completion:(void (^)(NSError *error))completion {
     NSData *data = UIImageJPEGRepresentation(image, 0.9);
     if (iOS9Later) { // 这里有坑... iOS8系统下这个方法保存图片会失败
         [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
@@ -519,9 +519,12 @@ static CGFloat TZScreenScale;
         } completionHandler:^(BOOL success, NSError * _Nullable error) {
             dispatch_sync(dispatch_get_main_queue(), ^{
                 if (success && completion) {
-                    completion();
+                    completion(nil);
                 } else if (error) {
                     NSLog(@"保存照片出错:%@",error.localizedDescription);
+                    if (completion) {
+                        completion(error);
+                    }
                 }
             });
         }];
@@ -532,9 +535,12 @@ static CGFloat TZScreenScale;
 #pragma clang diagnostic pop
             if (error) {
                 NSLog(@"保存图片失败:%@",error.localizedDescription);
+                if (completion) {
+                    completion(error);
+                }
             } else {
                 if (completion) {
-                    completion();
+                    completion(nil);
                 }
             }
         }];

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -17,6 +17,7 @@
 @interface TZImagePickerController () {
     NSTimer *_timer;
     UILabel *_tipLable;
+    UIButton *_settingBtn;
     BOOL _pushToPhotoPickerVc;
     
     UIButton *_progressHUD;
@@ -103,7 +104,7 @@
         
         if (![[TZImageManager manager] authorizationStatusAuthorized]) {
             _tipLable = [[UILabel alloc] init];
-            _tipLable.frame = CGRectMake(8, 0, self.view.tz_width - 16, 300);
+            _tipLable.frame = CGRectMake(8, 120, self.view.tz_width - 16, 60);
             _tipLable.textAlignment = NSTextAlignmentCenter;
             _tipLable.numberOfLines = 0;
             _tipLable.font = [UIFont systemFontOfSize:16];
@@ -114,6 +115,13 @@
             _tipLable.text = tipText;
             [self.view addSubview:_tipLable];
             
+            _settingBtn = [UIButton buttonWithType:UIButtonTypeSystem];
+            [_settingBtn setTitle:[NSBundle tz_localizedStringForKey:@"Setting"] forState:UIControlStateNormal];
+            _settingBtn.frame = CGRectMake(0, 180, self.view.tz_width, 44);
+            _settingBtn.titleLabel.font = [UIFont systemFontOfSize:18];
+            [_settingBtn addTarget:self action:@selector(settingBtnClick) forControlEvents:UIControlEventTouchUpInside];
+            [self.view addSubview:_settingBtn];
+            
             _timer = [NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(observeAuthrizationStatusChange) userInfo:nil repeats:YES];
         } else {
             [self pushToPhotoPickerVc];
@@ -164,6 +172,7 @@
     if ([[TZImageManager manager] authorizationStatusAuthorized]) {
         [self pushToPhotoPickerVc];
         [_tipLable removeFromSuperview];
+        [_settingBtn removeFromSuperview];
         [_timer invalidate];
         _timer = nil;
     }
@@ -285,6 +294,14 @@
     [TZImageManager manager].sortAscendingByModificationDate = sortAscendingByModificationDate;
 }
 
+- (void)settingBtnClick {
+    if (iOS8Later) {
+        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
+    } else {
+        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=PHOTOS"]];
+    }
+}
+
 - (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated {
     if (iOS7Later) viewController.automaticallyAdjustsScrollViewInsets = NO;
     if (_timer) { [_timer invalidate]; _timer = nil;}

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -418,7 +418,7 @@ static CGSize AssetGridThumbnailSize;
 
 - (void)takePhoto {
     AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
-    if ((authStatus == AVAuthorizationStatusRestricted || authStatus ==AVAuthorizationStatusDenied) && iOS8Later) {
+    if ((authStatus == AVAuthorizationStatusRestricted || authStatus ==AVAuthorizationStatusDenied) && iOS7Later) {
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
         // 无权限 做一个友好的提示
@@ -531,7 +531,7 @@ static CGSize AssetGridThumbnailSize;
         if (iOS8Later) {
             [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
         } else {
-            // [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=Photos"]];
+            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=CAMERA"]];
         }
     }
 }
@@ -545,8 +545,10 @@ static CGSize AssetGridThumbnailSize;
         TZImagePickerController *imagePickerVc = (TZImagePickerController *)self.navigationController;
         [imagePickerVc showProgressHUD];
         UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
-        [[TZImageManager manager] savePhotoWithImage:image completion:^{
-            [self reloadPhotoArray];
+        [[TZImageManager manager] savePhotoWithImage:image completion:^(NSError *error){
+            if (!error) {
+                [self reloadPhotoArray];
+            }
         }];
     }
 }

TZImagePickerController/ViewController.m

@@ -215,7 +215,7 @@
 
 - (void)takePhoto {
     AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
-    if ((authStatus == AVAuthorizationStatusRestricted || authStatus == AVAuthorizationStatusDenied) && iOS8Later) {
+    if ((authStatus == AVAuthorizationStatusRestricted || authStatus == AVAuthorizationStatusDenied) && iOS7Later) {
         // 无权限 做一个友好的提示
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
@@ -245,19 +245,27 @@
         [tzImagePickerVc showProgressHUD];
         UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
         // save photo and get asset / 保存图片，获取到asset
-        [[TZImageManager manager] savePhotoWithImage:image completion:^{
-            [[TZImageManager manager] getCameraRollAlbum:NO allowPickingImage:YES completion:^(TZAlbumModel *model) {
-                [[TZImageManager manager] getAssetsFromFetchResult:model.result allowPickingVideo:NO allowPickingImage:YES completion:^(NSArray<TZAssetModel *> *models) {
-                    [tzImagePickerVc hideProgressHUD];
-                    TZAssetModel *assetModel = [models firstObject];
-                    if (tzImagePickerVc.sortAscendingByModificationDate) {
-                        assetModel = [models lastObject];
-                    }
-                    [_selectedAssets addObject:assetModel.asset];
-                    [_selectedPhotos addObject:image];
-                    [_collectionView reloadData];
+        [[TZImageManager manager] savePhotoWithImage:image completion:^(NSError *error){
+            if (error) { // 如果保存失败，基本是没有相册权限导致的...
+                [tzImagePickerVc hideProgressHUD];
+                NSLog(@"图片保存失败 %@",error);
+                UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"无法保存图片" message:@"请在iPhone的""设置-隐私-相册""中允许访问相册" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"设置", nil];
+                alert.tag = 1;
+                [alert show];
+            } else {
+                [[TZImageManager manager] getCameraRollAlbum:NO allowPickingImage:YES completion:^(TZAlbumModel *model) {
+                    [[TZImageManager manager] getAssetsFromFetchResult:model.result allowPickingVideo:NO allowPickingImage:YES completion:^(NSArray<TZAssetModel *> *models) {
+                        [tzImagePickerVc hideProgressHUD];
+                        TZAssetModel *assetModel = [models firstObject];
+                        if (tzImagePickerVc.sortAscendingByModificationDate) {
+                            assetModel = [models lastObject];
+                        }
+                        [_selectedAssets addObject:assetModel.asset];
+                        [_selectedPhotos addObject:image];
+                        [_collectionView reloadData];
+                    }];
                 }];
-            }];
+            }
         }];
     }
 }
@@ -291,7 +299,11 @@
         if (iOS8Later) {
             [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
         } else {
-            // [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=Photos"]];
+            if (alertView.tag == 1) {
+                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=PHOTOS"]];
+            } else {
+                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=CAMERA"]];
+            }
         }
     }
 }