88 lines
2.8 KiB
Objective-C
88 lines
2.8 KiB
Objective-C
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//
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// GIGaFileManager.m
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// GIGA
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//
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// Created by lianxiang on 2018/9/18.
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// Copyright © 2018年 com.giga.ios. All rights reserved.
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//
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#import "GIGaFileManager.h"
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@implementation GIGaFileManager
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+(void)savaUserAvatorWith:(NSString *)userId image:(UIImage *)image{
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if (!userId) {
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GILog(@"userID nil !!!");
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return;
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}
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NSData*imageData=UIImageJPEGRepresentation(image,1.0f);
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NSString *fullPath=[[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]stringByAppendingPathComponent:userId];
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[imageData writeToFile:fullPath atomically:YES];
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}
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+ (UIImage *)getUserAvatorWith:(NSString *)userId{
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if (!userId) {
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GILog(@"userID nil !!!");
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return nil;
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}
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NSString*fullpath=[[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]stringByAppendingPathComponent:userId];
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UIImage*saveImage=[[UIImage alloc]initWithContentsOfFile:fullpath];
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if (!saveImage) {
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saveImage = [UIImage imageNamed:@"img_circle_avatar"];
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}
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return saveImage;
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}
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// 改变图像的尺寸，方便上传服务器
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+ (UIImage *) scaleFromImage: (UIImage *) image toSize: (CGSize) size
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{
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UIGraphicsBeginImageContext(size);
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[image drawInRect:CGRectMake(0, 0, size.width, size.height)];
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UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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return newImage;
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}
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//保持原来的长宽比，生成一个缩略图
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+ (UIImage *)thumbnailWithImageWithoutScale:(UIImage *)image size:(CGSize)asize
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{
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UIImage *newimage;
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if (nil == image) {
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newimage = nil;
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}
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else{
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CGSize oldsize = image.size;
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CGRect rect;
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if (asize.width/asize.height > oldsize.width/oldsize.height) {
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rect.size.width = asize.width*oldsize.height/oldsize.width;
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// rect.size.height = asize.height*oldsize.height/oldsize.width;
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rect.size.height = asize.width*oldsize.height/oldsize.width;
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rect.origin.x = (asize.width - rect.size.width)/2;
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rect.origin.y = 0;
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}
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else{
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//rect.size.width = asize.width;
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rect.size.width = asize.height*oldsize.width/oldsize.height;
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rect.size.height = asize.height*oldsize.width/oldsize.height;
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rect.origin.x = 0;
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rect.origin.y = (asize.height - rect.size.height)/2;
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}
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UIGraphicsBeginImageContext(asize);
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CGContextRef context = UIGraphicsGetCurrentContext();
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CGContextSetFillColorWithColor(context, [[UIColor clearColor] CGColor]);
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UIRectFill(CGRectMake(0, 0, asize.width, asize.height));//clear background
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[image drawInRect:rect];
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newimage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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}
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return newimage;
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}
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@end
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