//保存
UIButton *saveBtn = [[UIButton alloc] init];
// saveBtn.frame = CGRectMake((screenWidth-270)/4+1, 550/9*screenScale + 272/9*screenScale + 128/9*screenScale + 172/9*screenScale + 55,133, 42);
saveBtn.frame = CGRectMake((screenWidth-270)/4+1,1766/3,133, 42);
[saveBtn setTitle:@"保存" forState:UIControlStateNormal];
[saveBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[saveBtn setBackgroundColor:[UIColor colorWithRed:58/256.0 green:150/256.0 blue:253/256.0 alpha:1.0f]];
[saveBtn addTarget:self action:@selector(save) forControlEvents:UIControlEventTouchUpInside];
saveBtn.titleLabel.font = [UIFont systemFontOfSize:17];
[self.view addSubview:saveBtn];
-(void)save
{
NSLog(@"---save");
// //如果你的系统大于等于7.0 >
// if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1) {
//
// UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"" message:@"保存二维码到相册" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];
// alertView.tag = 1;
// [alertView show];
//
// }else{
//
// //>=iOS8以上才有alertController这个方法
// UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"" message:@"保存二维码到相册" preferredStyle:UIAlertControllerStyleAlert];
// UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
// UIImageWriteToSavedPhotosAlbum(_codeView.image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
// }];
//
// UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
//
// }];
//
// [alertController addAction:cancelAction];
// [alertController addAction: okAction];
// [self presentViewController:alertController animated:YES completion:nil];
//
//}
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"" message:@"保存二维码到相册" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];
alertView.tag = 1;
[alertView show];
}
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{
if (error == nil) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"提示" message:@"已存入手机相册" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定",nil];
alertView.tag = 2;
[alertView show];
}else{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"请去设置-隐私-照片打开允许访问" message:@"保存失败" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];
alertView.tag = 3;
[alertView show];
}
}
#pragma mark uialertview deleagate
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0 && alertView.tag ==1) {
UIImageWriteToSavedPhotosAlbum(_codeView.image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
}else if(buttonIndex == 0 && alertView.tag==3){
//打开设置-隐私-照片
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
}
}