Question

我将此代码用于IOS7，检查设备中是否存在图像，如果没有，则在本地下载。

现在在IOS8上什么都不保存，有人能帮助我吗？

//folder where save
     NSString *ImagesPath = [[NSString alloc] initWithString:[[[[NSBundle mainBundle]  resourcePath] stringByDeletingLastPathComponent] stringByAppendingPathComponent:@"Documents"]];

 // check if image exist
 NSString* foofile = [ImagesPath stringByAppendingPathComponent:nombreImagenLocal];
 BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:foofile];

 // check if image exist locally
 if (!fileExists){
     NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:rutaCompletaLogo]];

 //if not, i save it
 if (data) {

     // url where is saved
     NSString *cachedImagePath = [ImagesPath stringByAppendingPathComponent:nombreImagenLocal];

     if ([data writeToFile:cachedImagePath atomically:YES]) {

 NSLog(@"Downloaded file saved to: %@", cachedImagePath);

 }// end

Answer 1

＆＃39;文件＆＃39;文件夹已从iOS8更改。查看Apple tech note

请确保您不使用硬编码值。使用API提供的方法：

NSString *resourcePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];

OR（如前一个链接所述）

// Returns the URL to the application's Documents directory. - (NSURL *)applicationDocumentsDirectory{ return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject]; }

希望这有帮助！

无法在本地保存图像IOS 8

1 个答案: