注：在模擬器中可能下載下文件但沒內容顯示，需要在真機上運行測試使用

1、導入頭文件

#import<QuickLook/QuickLook.h>

遵守協(xié)議 ：QLPreviewControllerDataSource,QLPreviewControllerDelegate

2、 ??

@property(nonatomic,strong)NSString*deFilePath; ?//這個是存到本地的文件地址

例如：

file:///Users/lilianming/Library/Developer/CoreSimulator/Devices/5322EE30-3908-4791-BB13-37FF7272ACF4/data/Containers/Data/Application/851245D6-C482-4397-8585-60392C3F4E64/Documents/20160315180123_8ekihq.xlsx

- (void)quickLookFiles ?//初始化 代理 設置當前頁?

{?

???QLPreviewController*preView = [[QLPreviewControlleralloc]init];

??? preView.dataSource=self;

??? preView.delegate=self;

??? preView.currentPreviewItemIndex=0;

??? [self.navigationControllerpushViewController:preViewanimated:YES];

}

- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController*)controller

{

???return1;

}

- (id)previewController:(QLPreviewController*)previewController previewItemAtIndex:(NSInteger)idx{

?return[NSURLURLWithString:_deFilePath];//返回的要是一個URL形式 ?&& 直接返回網(wǎng)址能打開嗎？

}