从 iPhone 中的 NSHomeDirectory() 中删除图像

Question

您好，我正在保存这样的图像：

[UIImagePNGRepresentation(image) writeToFile:[self findUniqueSavePath] atomically:YES];
// Show the current contents of the documents folder
CFShow([[NSFileManager defaultManager] directoryContentsAtPath:[NSHomeDirectory() stringByAppendingString:@"/Documents"]]);

- (NSString *) findUniqueSavePath
{   
    int i = 1;
    NSString *path;
    do 
    {
        // iterate until a name does not match an existing file
        path = [NSString stringWithFormat:@"%@/Documents/IMAGE-%d.PNG", NSHomeDirectory(), i++];
    } while ([[NSFileManager defaultManager] fileExistsAtPath:path]);

    [classObj updateimage];

    return path;
}

我想在新图像写入文档时删除图像。

Answer 1

你可以使用这个代码

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *path=[documentsDirectory stringByAppendingPathComponent:@"image.png"];
    [[NSFileManager defaultManager] removeItemAtPath:path error:nil];