Question

在我的文档目录中，一个图像就是它们，名称为Image1。

我希望在文档目录文件夹中复制名称为Image2的相同图像。

请建议我怎么办？

Answer 1

参考以下代码。

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [paths objectAtIndex:0];
NSString *imagePath1= [documentDirectory stringByAppendingPathComponent:@"image1.png"];
NSString *imagePath2= [documentDirectory stringByAppendingPathComponent:@"image2.png"];

[[NSFileManager defaultManager] copyItemAtPath:imagePath1 toPath:imagePath2 error:nil];

Answer 2

从第一张图片中获取数据并使用其他名称保存相同的数据，如：

NSData *data = UIImageJPEGRepresentation(image1, 1.0);

NSString *str=@"image2.png"

NSString *fileName = [[stringPath stringByAppendingFormat:@"/"] stringByAppendingFormat:str];
NSString *stringPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
[data writeToFile:fileName atomically:YES];

Answer 3

我有两张Fetch图像并保存图像：您获取保存在Document目录中的图像，然后传递它以使用不同的名称保存图像：

-(UIImage *)loadImage:(NSString *)name
{
    NSString*   documentsDirectory=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES) objectAtIndex:0];

    NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:name];    
    UIImage *res = [UIImage imageWithContentsOfFile:fullPath];

    return res;
}
-(void)saveImage:(UIImage *)image withName:(NSString *)name
{
    NSData *data = UIImageJPEGRepresentation(image, 1);
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString*   documentsDirectory=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES) objectAtIndex:0];
    NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:name];

    [fileManager createFileAtPath:fullPath contents:data attributes:nil];

}

如何复制一个图像并另存为。文档目录中的名称

3 个答案: