从文档目录中删除文件类型

Question

我试图删除文档目录中扩展名为".jpg"的所有文件,经过多次尝试,我仍然无法成功.

我现在的代码是:

-(void)removeOneImage:(NSString*)fileName {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.jpg", fileName]];
[fileManager removeItemAtPath: fullPath error:NULL];
}

使用此代码,我可以删除一个具有特定名称的文件.

任何人都可以帮我删除具有特定扩展名的所有文件吗？

亲切的问候,

似雪

Answer 1

    NSString *extension = @"jpg";
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSArray *contents = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:NULL];  
NSEnumerator *e = [contents objectEnumerator];
NSString *filename;
while ((filename = [e nextObject])) {

    if ([[filename pathExtension] isEqualToString:extension]) {

        [fileManager removeItemAtPath:[documentsDirectory stringByAppendingPathComponent:filename] error:NULL];
    }
}