iOS13适配

一、状态条获取，旧方法会闪退，修改如下：

if (@available(iOS 13.0, *))    {
        UIWindow *keyWindow = [UIApplication sharedApplication].windows[0];
        statusBar = [[UIView alloc]initWithFrame:keyWindow.windowScene.statusBarManager.statusBarFrame] ;
        [keyWindow addSubview:statusBar];
} else {
        statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
}

二、performSegueWithIdentifier跳转 UIViewController 不全屏，解决方法：
需要设置目的 UIViewController 的modalPresentationStyle为UIModalPresentationFullScreen
在源 UIViewController 加代码：

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    UIViewController *vc = segue.destinationViewController;
    vc.modalPresentationStyle = UIModalPresentationFullScreen;
}

三、拍照返回图片获取路径，之前的PHImageFileURLKey返回空了
解决方法：
1、writeImageToSavedPhotosAlbum方法保存UIImage到相册
2、从回调的assetURL 中取到图片 id
3、PHAsset的fetchAssetsWithLocalIdentifiers方法获取PHAsset
4、PHAsset的requestContentEditingInputWithOptions方法获取图片路径
代码如下：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    UIImage *image = info[UIImagePickerControllerOriginalImage];
    
    ALAssetsLibrary *lib = [[ALAssetsLibrary alloc] init];
        
    __weak typeof(self) weakSelf = self;
    //保存图片
    [lib writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)[image imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){

       //获取图片 id
        NSURLComponents *urlComponents = [[NSURLComponents alloc] initWithString:assetURL.absoluteString];
        NSString *usePath = @"";
        for(int i=0;i<urlComponents.queryItems.count;i++){
            if ([urlComponents.queryItems[i].name isEqualToString:@"id"]){
                usePath =urlComponents.queryItems[i].value;
                break;
            }
        }
        //根据图片 id 获取PHAsset
        PHFetchResult * re = [PHAsset fetchAssetsWithLocalIdentifiers:@[usePath] options:nil];
        [re enumerateObjectsUsingBlock:^(PHAsset * _Nonnull asset, NSUInteger idx, BOOL * _Nonnull stop) {

          //根据PHAsset调用requestContentEditingInputWithOptions获取url
            PHContentEditingInputRequestOptions *editOptions = [[PHContentEditingInputRequestOptions alloc] init];

            [asset requestContentEditingInputWithOptions:editOptions completionHandler:^(PHContentEditingInput *contentEditingInput, NSDictionary *info) {
                if (contentEditingInput.fullSizeImageURL) {
                    NSLog(@"Image path: %@", contentEditingInput.fullSizeImageURL);
                }else{
                    NSLog(@"Error retrieving image filePath, heres whats available: %@", info);
                }
            }];
        }];
    }];
    
    [picker dismissViewControllerAnimated:YES completion:NULL];

}