项目需要用户可以上传自己的一些ppt,doc,pdf文档等。利用UIDocumentPickerViewController就可以帮助我们访问本地的文件达到上传的目的。
需要让iOS程序支持iTunes文件交换需要在程序的Info.plist里增加一个键：UIFileSharingEnabled（Application supports iTunes file sharing），赋值YES。
然后就是代码操作了。
首先初始化UIDocumentPickerViewController
// 项目支持可以选择的文件类型
NSArray*types = @[
@"com.microsoft.powerpoint.ppt",
@"com.microsoft.word.doc",
@"org.openxmlformats.wordprocessingml.document",
@"org.openxmlformats.presentationml.presentation",
@"public.mpeg-4",
@"com.adobe.pdf",
@"public.mp3"
];
//初始化
self.documentPicker = [[UIDocumentPickerViewControlleralloc] initWithDocumentTypes:types inMode:UIDocumentPickerModeOpen];
self.documentPicker.delegate =self;
//全屏弹出
self.documentPicker.modalPresentationStyle =UIModalPresentationFullScreen;
//设置模态弹出方式
//self.documentPicker.modalPresentationStyle = UIModalPresentationFormSheet;
[[UIApplicationsharedApplication].keyWindow.rootViewController presentViewController:self.documentPicker animated:YEScompletion:nil];
然后直接实现UIDocumentPickerDelegate的方法就可以获取到本地文件的数据了
#pragmamark - UIDocumentPickerDelegate
- (void)documentPicker:(UIDocumentPickerViewController*)controller didPickDocumentsAtURLs:(NSArray *)urls {
//获取授权
BOOLfileUrlAuthozied = [urls.firstObject startAccessingSecurityScopedResource];
if(fileUrlAuthozied) {
NSFileCoordinator*fileCoordinator = [[NSFileCoordinatoralloc] init];
NSError*error;
[fileCoordinator coordinateReadingItemAtURL:urls.firstObject options:0error:&error byAccessor:^(NSURL*newURL) {
//读取文件
NSString*fileName = [newURL lastPathComponent];
NSError*error =nil;
NSData*fileData = [NSDatadataWithContentsOfURL:newURL options:NSDataReadingMappedIfSafeerror:&error];
// 上传规则
/*
走项目数据上传接口就可以了
*/
[[UIApplicationsharedApplication].keyWindow.rootViewController dismissViewControllerAnimated:YEScompletion:NULL];
}];
[urls.firstObject stopAccessingSecurityScopedResource];
}else{
//授权失败
[LCSCustomToast showWithMessage:@"授权失败，请您去设置页面打开授权"image:@"login_fail_image"];
return;
}
}