blocks|key|811518|text|NSFileManager+*fileMgr+=+[[[NSFileManager+alloc]+init]+autorelease];
NSError+*error+=+nil;
NSArray+*directoryContents+=+[fileMgr+contentsOfDirectoryAtPath:documentsDirectory+error:&error];
if+(error+==+nil)+{
++++for+(NSString+*path+in+directoryContents)+{
++++++++NSString+*fullPath+=+[documentsDirectory+stringByAppendingPathComponent:path];
++++++++BOOL+removeSuccess+=+[fileMgr+removeItemAtPath:fullPath+error:&error];
++++++++if+(!removeSuccess)+{
++++++++++++//+Error+handling
++++++++++++...
++++++++}
++++}
}+else+{
++++//+Error+handling
++++...
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|811519|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>NSFileManager *fileMgr = [[[NSFileManager alloc] init] autorelease];
NSError *error = nil;
NSArray *directoryContents = [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:&amp;error];
if (error == nil) {
 for (NSString *path in directoryContents) {
 NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:path];
 BOOL removeSuccess = [fileMgr removeItemAtPath:fullPath error:&amp;error];
 if (!removeSuccess) {
 // Error handling
 ...
 }
 }
} else {
 // Error handling
 ...
}
</code></pre>

blocks|key|1026317|text|-+(void)removeFile
{
++++//+you+need+to+write+a+function+to+get+to+that+directory
++++NSString+*filePath+=+[self+getDirectory];
++++NSFileManager+*fileManager+=+[NSFileManager+defaultManager];++
++++if+([fileManager+fileExistsAtPath:filePath])+
++++{
++++++++NSError+*error;
++++++++if+(![fileManager+removeItemAtPath:filePath+error:&error])
++++++++{
++++++++++++NSLog(@"Error+removing+file:+%25@",+error);+
++++++++};
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1026318|我相信这是更短的。|unstyled|1026319|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>- (void)removeFile
{
 // you need to write a function to get to that directory
 NSString *filePath = [self getDirectory];
 NSFileManager *fileManager = [NSFileManager defaultManager]; 
 if ([fileManager fileExistsAtPath:filePath]) 
 {
 NSError *error;
 if (![fileManager removeItemAtPath:filePath error:&amp;error])
 {
 NSLog(@"Error removing file: %@", error); 
 };
 }
}
</code></pre>

I believe this is shorter.

blocks|key|811604|text|代码不适用于iOS7和Xcode5，因此进行了编辑以适用于我的应用程序。感谢@Ole+Begemann和@pablasso。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|811605|-(void)EmptySandbox
{
++++NSFileManager+*fileMgr+=+[[NSFileManager+alloc]+init];
++++NSError+*error+=+nil;
++++NSArray+*paths+=+NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,+NSUserDomainMask,+YES);
++++NSString+*documentsDirectory+=+[paths+objectAtIndex:0];
++++NSArray+*files+=+[fileMgr+contentsOfDirectoryAtPath:documentsDirectory+error:nil];

++++while+(files.count+>+0)+{
++++++++NSString+*documentsDirectory+=+[paths+objectAtIndex:0];
++++++++NSArray+*directoryContents+=+[fileMgr+contentsOfDirectoryAtPath:documentsDirectory+error:&error];
++++++++if+(error+==+nil)+{
++++++++++++for+(NSString+*path+in+directoryContents)+{
++++++++++++++++NSString+*fullPath+=+[documentsDirectory+stringByAppendingPathComponent:path];
++++++++++++++++BOOL+removeSuccess+=+[fileMgr+removeItemAtPath:fullPath+error:&error];
++++++++++++++++files+=+[fileMgr+contentsOfDirectoryAtPath:documentsDirectory+error:nil];
++++++++++++++++if+(!removeSuccess)+{
++++++++++++++++++++//+Error
++++++++++++++++}
++++++++++++}
++++++++}+else+{
++++++++++++//+Error
++++++++}
++++}
}|code-block|syntax|javascript|811606|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Code did not work with IOS 7 and Xcode 5 so edited to work with my app.
Big credits to @Ole Begemann and @pablasso.

<pre><code>-(void)EmptySandbox
{
 NSFileManager *fileMgr = [[NSFileManager alloc] init];
 NSError *error = nil;
 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *documentsDirectory = [paths objectAtIndex:0];
 NSArray *files = [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:nil];

 while (files.count &gt; 0) {
 NSString *documentsDirectory = [paths objectAtIndex:0];
 NSArray *directoryContents = [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:&amp;error];
 if (error == nil) {
 for (NSString *path in directoryContents) {
 NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:path];
 BOOL removeSuccess = [fileMgr removeItemAtPath:fullPath error:&amp;error];
 files = [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:nil];
 if (!removeSuccess) {
 // Error
 }
 }
 } else {
 // Error
 }
 }
}
</code></pre>

blocks|key|1026405|text|+NSFileManager+*fileMgr+=+[[[NSFileManager+alloc]+init]+autorelease];
NSError+*error+=+nil;
NSArray+*directoryContents+=+[fileMgr+contentsOfDirectoryAtPath:documentsDirectory+error:&error];
+if+(error+==+nil)+{
+++for+(NSString+*path+in+directoryContents)+{
++++NSString+*fullPath+=+[documentsDirectory+stringByAppendingPathComponent:path];
++++BOOL+removeSuccess+=+[fileMgr+removeItemAtPath:fullPath+error:&error];
++++if+(!removeSuccess)+{
++++++++//+Error+handling
++++++++...
++++}
}
}+else+{
+//+Error+handling
...
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1026406|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> NSFileManager *fileMgr = [[[NSFileManager alloc] init] autorelease];
NSError *error = nil;
NSArray *directoryContents = [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:&amp;error];
 if (error == nil) {
 for (NSString *path in directoryContents) {
 NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:path];
 BOOL removeSuccess = [fileMgr removeItemAtPath:fullPath error:&amp;error];
 if (!removeSuccess) {
 // Error handling
 ...
 }
}
} else {
 // Error handling
...
}
</code></pre>

blocks|key|811684|text|它可能不适用于所有情况，但通常情况下，将所有文件放在文档目录内的自定义目录中，然后使用removeItemAtPath:error:删除该目录并重新创建，会更有效率。例如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|811685|//+Clear+cache
NSError+*error;
[[NSFileManager+defaultManager]+removeItemAtPath:cacheDirectory+error:&error];
if+(error)
{
++++//+error+handling
}

//+Create+cache+directory+again
NSError+*error2;
[[NSFileManager+defaultManager]+createDirectoryAtPath:cacheDirectory+withIntermediateDirectories:YES+attributes:nil+error:&error2];
if+(error2)
{
++++//+error+handling
}|code-block|syntax|javascript|811686|entityMap^0|17|N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

It may not be applicable in all cases but generally it would be more efficient to put all the files in a custom directory inside Documents Directory and then use <code>removeItemAtPath:error:</code> to delete that directory and create it again. E.g.:

<pre><code>// Clear cache
NSError *error;
[[NSFileManager defaultManager] removeItemAtPath:cacheDirectory error:&amp;error];
if (error)
{
 // error handling
}

// Create cache directory again
NSError *error2;
[[NSFileManager defaultManager] createDirectoryAtPath:cacheDirectory withIntermediateDirectories:YES attributes:nil error:&amp;error2];
if (error2)
{
 // error handling
}
</code></pre>

blocks|key|1026537|text|对于Swift开发人员：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1026538|let+fileMgr+=+NSFileManager()
let+dirPath+=+NSSearchPathForDirectoriesInDomains(.DocumentDirectory,+.UserDomainMask,+true)[0]
if+let+directoryContents+=+try?+fileMgr.contentsOfDirectoryAtPath(dirPath)
{
++++for+path+in+directoryContents+
++++{+++
++++++++let+fullPath+=+(dirPath+as+NSString).stringByAppendingPathComponent(path)
++++++++do+
++++++++{
++++++++++++try+fileMgr.removeItem(atPath:+fullPath)
++++++++++++print("Files+deleted")
++++++++}+
++++++++catch+let+error+as+NSError+
++++++++{
++++++++++++print("Error+deleting:+\(error.localizedDescription)")
++++++++}
++++}
}|code-block|syntax|javascript|1026539|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For Swift devs:

<pre><code>let fileMgr = NSFileManager()
let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
if let directoryContents = try? fileMgr.contentsOfDirectoryAtPath(dirPath)
{
 for path in directoryContents 
 { 
 let fullPath = (dirPath as NSString).stringByAppendingPathComponent(path)
 do 
 {
 try fileMgr.removeItem(atPath: fullPath)
 print("Files deleted")
 } 
 catch let error as NSError 
 {
 print("Error deleting: \(error.localizedDescription)")
 }
 }
}
</code></pre>

blocks|key|811771|text|Swift+2.1带有一些额外的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|811772|do+{
++++let+paths+=+NSSearchPathForDirectoriesInDomains(.DocumentDirectory,+.UserDomainMask,+true)
++++let+documentsDirectory+=+paths[0]
++++let+documentsDirectoryURL+=+NSURL(fileURLWithPath:+paths[0])

++++let+directoryContents+=+try+NSFileManager.defaultManager().contentsOfDirectoryAtPath(documentsDirectory)

++++var+totalMegaBytes:+Double+=+0
++++var+nrOfFiles+=+0

++++for+filename+in+directoryContents+{
++++++++let+file+=+documentsDirectoryURL.URLByAppendingPathComponent(filename)


++++++++let+fileAttributes+=+try+NSFileManager.defaultManager().attributesOfItemAtPath(file.path!)
++++++++let+fileSize+=+fileAttributes[NSFileSize]+as!+Double++++++++++++
++++++++totalMegaBytes+%2B=+fileSize/1024/1024

++++++++do+{
++++++++++++try+NSFileManager.defaultManager().removeItemAtURL(file)
++++++++++++nrOfFiles%2B%2B
++++++++}catch+let+error+as+NSError{
++++++++++++print(">+Emptying+sandbox:+could+not+delete+file",+filename,+error)
++++++++}
++++}

++++print(">+Emptying+sandbox:+Removed+\(nrOfFiles)+files+with+a+total+of+\(round(totalMegaBytes))MB")

}catch+let+error+as+NSError{
++++print(">+Emptying+sandbox:+Error+emptying+sandbox",+error)
}|code-block|syntax|javascript|811773|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift 2.1 with some extra's:

<pre><code>do {
 let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
 let documentsDirectory = paths[0]
 let documentsDirectoryURL = NSURL(fileURLWithPath: paths[0])

 let directoryContents = try NSFileManager.defaultManager().contentsOfDirectoryAtPath(documentsDirectory)

 var totalMegaBytes: Double = 0
 var nrOfFiles = 0

 for filename in directoryContents {
 let file = documentsDirectoryURL.URLByAppendingPathComponent(filename)


 let fileAttributes = try NSFileManager.defaultManager().attributesOfItemAtPath(file.path!)
 let fileSize = fileAttributes[NSFileSize] as! Double 
 totalMegaBytes += fileSize/1024/1024

 do {
 try NSFileManager.defaultManager().removeItemAtURL(file)
 nrOfFiles++
 }catch let error as NSError{
 print("&gt; Emptying sandbox: could not delete file", filename, error)
 }
 }

 print("&gt; Emptying sandbox: Removed \(nrOfFiles) files with a total of \(round(totalMegaBytes))MB")

}catch let error as NSError{
 print("&gt; Emptying sandbox: Error emptying sandbox", error)
}
</code></pre>

Is there an easy way to delete all the files(images) I saved in the documents folder of the app?

Deleting all the files in the iPhone sandbox (documents folder)?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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有没有一种简单的方法可以删除我保存在应用程序的documents文件夹中的所有文件(图像)？

问是否删除iPhone沙箱(documents文件夹)中的所有文件？
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问是否删除iPhone沙箱(documents文件夹)中的所有文件？
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