iOS 照片存储到沙盒 和读取

iOS 照片存储到沙盒 和读取

这里介绍简单的ios照片保存到沙盒，然后读取出来。

1. 照片保存到沙盒

 UIImage *image=[UIImage imageNamed:@"20141118042246536.jpg"];

    NSString *path=[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] stringByAppendingPathComponent:@"personImage.png"];

   

    //图片是png格式的转化

    NSData *data=UIImageJPEGRepresentation(image, 0.8);

    //图片是png格式的转化

    NSData *data= UIImagePNGRepresentation(image)

    [data writeToFile:path atomically:YES];

2.读取沙盒中得图片

 NSString *path=[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] stringByAppendingPathComponent:@"personImage.png"];

    NSData *imageData=[[NSData alloc] initWithContentsOfFile:path];

    //将二进制数据转成图片

    UIImage *image=[[UIImage alloc] initWithData:imageData];

    self.imagePer.image=image;