在iOS开发中、经常用到图片的本地化。 iOS 图片本地存储、本地获取、本地删除，可以通过以下类方法实现。
p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #008400; background-color: #ffffff }
p.p2 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #000000; background-color: #ffffff }
p.p3 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #000000; background-color: #ffffff; min-height: 16.0px }
p.p4 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #3e1e81; background-color: #ffffff }
p.p5 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #d12f1b; background-color: #ffffff }
p.p6 { margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; background-color: #ffffff; min-height: 14.0px }
p.p7 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #ba2da2; background-color: #ffffff }
span.s1 { color: #ba2da2 }
span.s2 { color: #703daa }
span.s3 { color: #000000 }
span.s4 { color: #d12f1b }
span.s5 { color: #3e1e81 }
span.s6 { color: #31595d }
span.s7 { color: #272ad8 }
span.s8 { color: #4f8187 }
//将图片保存到本地
p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #000000; background-color: #ffffff }
span.s1 { color: #ba2da2 }
span.s2 { color: #703daa }
+ (void)SaveImageToLocal:(UIImage*)image Keys:(NSString*)key {
//首先,需要获取沙盒路径
NSString *picPath=[NSString stringWithFormat:@"%@/Documents/%@.png",NSHomeDirectory(),key];
NSLog(@"将图片保存到本地 %@",picPath);
BOOL isHaveImage = [self LocalHaveImage:key];
if (isHaveImage) {
NSLog(@"本地已经保存该图片、无需再次存储...");
return ;
}
NSData *imgData = UIImageJPEGRepresentation(image,0.5);
[imgData writeToFile:picPath atomically:YES];
}
//从本地获取图片
+ (UIImage*)GetImageFromLocal:(NSString*)key {
if ([JKBlankTool isBlankString:key]) {
return nil;
}
//读取本地图片非resource
NSString *picPath=[NSString stringWithFormat:@"%@/Documents/%@.png",NSHomeDirectory(),key];
NSLog(@"获取图片 %@",picPath);
UIImage *img=[[UIImage alloc]initWithContentsOfFile:picPath];
return img;
}
//本地是否有图片
+ (BOOL)LocalHaveImage:(NSString*)key {
if ([JKBlankTool isBlankString:key]) {
return NO;
}
//读取本地图片非resource
NSString *picPath=[NSString stringWithFormat:@"%@/Documents/%@.png",NSHomeDirectory(),key];
NSLog(@"查询是否存在 %@",picPath);
UIImage *img=[[UIImage alloc]initWithContentsOfFile:picPath];
if (img) {
return YES;
}
return NO;
}
//将图片从本地删除
+ (void)RemoveImageToLocalKeys:(NSString*)key {
NSString *picPath=[NSString stringWithFormat:@"%@/Documents/%@.png",NSHomeDirectory(),key];
NSLog(@"将图片从本地删除 %@",picPath);
[[NSFileManager defaultManager] removeItemAtPath:picPath error:nil];
}