保存h5中的图片到本地

xplan-ios/Main/XPWebViewController.m

@@ -21,6 +21,7 @@
 #import "XPMineUserInfoViewController.h"
 #import "XPMineRechargeViewController.h"
 #import "NSMutableDictionary+Saft.h"
+#import "Base64.h"
 ///vc
 #import "XPMineDressUpViewController.h"
 #import "XPDressUpShopViewController.h"
@@ -96,6 +97,7 @@ NSString * const kJumpAppointPage = @"jumpAppointPage";
 NSString * const kJSOpenRoom = @"openRoom";
 NSString * const kJSOpenRoomForGiftId = @"openRoomForGiftId";
 NSString * const kProhibitRightSlip = @"prohibitRightSlip";
+NSString * const kSaveBase64Image = @"saveBase64Image";
 
 @implementation XPWebViewController
 
@@ -342,12 +344,34 @@ NSString * const kProhibitRightSlip = @"prohibitRightSlip";
                     });
                 }
                 
+			} else if([message.name isEqualToString:kSaveBase64Image]) {
+				NSString * base64 = message.body;
+				NSArray * array = [base64 componentsSeparatedByString:@","];
+				if(array.count > 1) {
+					NSData * data = [Base64 decode:array[1]];
+					UIImage * image = [UIImage imageWithData:data];
+					UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), (__bridge void *)self);
+				}
 			}
         }
     }];
 }
 
-#pragma mark - private method
+
+#pragma mark - private metho
+- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{
+		if (error == nil) {
+			NSString *	jsStrUrl = [NSString stringWithFormat:@"saveBase64ImageCallback(\"%@\")", @"1"];
+			[self.webview evaluateJavaScript:jsStrUrl completionHandler:^(id _Nullable other, NSError * _Nullable error) {
+				NSLog(@"%@",error);
+			}];
+		} else {
+			NSString *	jsStrUrl = [NSString stringWithFormat:@"saveBase64ImageCallback(\"%@\")", @"0"];
+			[self.webview evaluateJavaScript:jsStrUrl completionHandler:^(id _Nullable other, NSError * _Nullable error) {
+				NSLog(@"%@",error);
+			}];
+		}
+}
 - (void)handleRouterType:(NSInteger)skyType message:(WKScriptMessage *)message {
     NSDictionary *bodyDict;
     if ([message.body isKindOfClass:[NSDictionary class]]) {
@@ -657,6 +681,8 @@ NSString * const kProhibitRightSlip = @"prohibitRightSlip";
         [_userContentController addScriptMessageHandler:weakScriptMessageDelegate name:kJSOpenRoomForGiftId];
 		///禁用侧滑手势
 		[_userContentController addScriptMessageHandler:weakScriptMessageDelegate name:kProhibitRightSlip];
+///保存图片到本地
+		[_userContentController addScriptMessageHandler:weakScriptMessageDelegate name:kSaveBase64Image];
     }
     return _userContentController;
 }