在判断用户是否具有访问相册权限的时候，需要导入头文件#import
#pragma mark---保存相册
- (void)didSave{
if ([self isOrUsePhotos]) {
//有权限
[self loadImageFinished:[self loadImage]];
}else{
//无权限----提示用户--设置--去开启允许
}
}
//访问权限判断
- (BOOL)isOrUsePhotos{
if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0) {
ALAuthorizationStatus author =[ALAssetsLibrary authorizationStatus];
if (author == kCLAuthorizationStatusRestricted || author == kCLAuthorizationStatusDenied) {
//无权限
returnNO;
}
}
else{
PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
if (status == PHAuthorizationStatusRestricted ||
status ==PHAuthorizationStatusDenied) {
//无权限
returnNO;
}
}
return YES;
}
//转化为PDF保存在本地
- (void)savePDF{
NSData*pdfData = [selfconverToPDF];
NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/testFile.pdf"]];
BOOLresult = [pdfDatawriteToFile:pathatomically:YES];
if(result) {
NSLog(@"保存成功");
UIAlertController *alertCtrl = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"保存成功" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}];
UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
[alertCtrladdAction:action1];
[alertCtrladdAction:action2];
[self presentViewController:alertCtrl animated:YES completion:nil];
}else{
NSLog(@"保存失败");
}
}
- (void)loadImageFinished:(UIImage*)image
{
UIImageWriteToSavedPhotosAlbum(image,self,@selector(image:didFinishSavingWithError:contextInfo:), (__bridgevoid*)self);
}
- (void)image:(UIImage*)image didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo
{
NSLog(@"image = %@, error = %@, contextInfo = %@", image, error, contextInfo);
}
#pragma mark---图片保存到相册
- (UIImage*)loadImage
{
CGSizeboundsSize =_myWebView.bounds.size;
CGFloat boundsWidth = _myWebView.bounds.size.width;
CGFloat boundsHeight = _myWebView.bounds.size.height;
CGPoint offset = _myWebView.scrollView.contentOffset;
[_myWebView.scrollView setContentOffset:CGPointMake(0, 0)];
CGFloat contentHeight = _myWebView.scrollView.contentSize.height;
NSMutableArray *images = [NSMutableArray array];
while(contentHeight >0) {
UIGraphicsBeginImageContext(boundsSize);
[_myWebView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[imagesaddObject:image];
CGFloat offsetY = _myWebView.scrollView.contentOffset.y;
[_myWebView.scrollView setContentOffset:CGPointMake(0, offsetY + boundsHeight)];
contentHeight -= boundsHeight;
}
[_myWebView.scrollView setContentOffset:offset];
UIGraphicsBeginImageContext(_myWebView.scrollView.contentSize);
[images enumerateObjectsUsingBlock:^(UIImage *image, NSUInteger idx, BOOL *stop) {
[imagedrawInRect:CGRectMake(0, boundsHeight * idx, boundsWidth, boundsHeight)];
}];
UIImage *fullImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
returnfullImage;
}
#pragma mark---将_myWebView转化为PDF的DATA数据
- (NSData*)converToPDF{
UIViewPrintFormatter *fmt = [_myWebView viewPrintFormatter];
UIPrintPageRenderer *render = [[UIPrintPageRenderer alloc] init];
[renderaddPrintFormatter:fmt startingAtPageAtIndex:0];
CGRectpage;
page.origin.x=0;
page.origin.y=0;
page.size.width=600;
page.size.height=768;
CGRectprintable=CGRectInset( page,50,50);
[rendersetValue:[NSValue valueWithCGRect:page] forKey:@"paperRect"];
[rendersetValue:[NSValue valueWithCGRect:printable] forKey:@"printableRect"];
NSMutableData * pdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData( pdfData, CGRectZero, nil );
for(NSIntegeri=0; i < [rendernumberOfPages]; i++)
{
UIGraphicsBeginPDFPage();
CGRect bounds = UIGraphicsGetPDFContextBounds();
[renderdrawPageAtIndex:iinRect:bounds];
}
UIGraphicsEndPDFContext();
returnpdfData;
}