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129 lines
3.8 KiB
129 lines
3.8 KiB
1 year ago
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// DPClearCacheTool.m
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// Ditpo
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//
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// Created by ArJun on 2017/9/24.
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// Copyright © 2017年 Shenzhen Ditpo Technology Co. Ltd. All rights reserved.
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//
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#import "DPClearCacheTool.h"
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#define fileManager [NSFileManager defaultManager]
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#define cachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
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@implementation DPClearCacheTool
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// 获取cachePath路径下文件夹大小
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+ (NSString *)getCacheSize {
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// 调试
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#ifdef DEBUG
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// 如果文件夹不存在或者不是一个文件夹那么就抛出一个异常
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// 抛出异常会导致程序闪退,所以只在调试阶段抛出，发布阶段不要再抛了,不然极度影响用户体验
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BOOL isDirectory = NO;
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BOOL isExist = [fileManager fileExistsAtPath:cachePath isDirectory:&isDirectory];
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if (!isExist || !isDirectory) {
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NSException *exception = [NSException exceptionWithName:@"文件错误" reason:@"请检查你的文件路径!" userInfo:nil];
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[exception raise];
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}
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//发布
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#else
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#endif
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//获取“cachePath”文件夹下面的所有文件
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NSArray *subpathArray= [fileManager subpathsAtPath:cachePath];
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NSString *filePath = nil;
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long long totalSize = 0;
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for (NSString *subpath in subpathArray) {
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// 拼接每一个文件的全路径
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filePath =[cachePath stringByAppendingPathComponent:subpath];
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// isDirectory，是否是文件夹，默认不是
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BOOL isDirectory = NO;
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// isExist，判断文件是否存在
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BOOL isExist = [fileManager fileExistsAtPath:filePath isDirectory:&isDirectory];
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// 文件不存在,是文件夹,是隐藏文件都过滤
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if (!isExist || isDirectory || [filePath containsString:@".DS"]) continue;
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// attributesOfItemAtPath 只可以获得文件属性，不可以获得文件夹属性，这个也就是需要遍历文件夹里面每一个文件的原因
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long long fileSize = [[fileManager attributesOfItemAtPath:filePath error:nil] fileSize];
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totalSize += fileSize;
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}
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// 将文件夹大小转换为 M/KB/B
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NSString *totalSizeString = nil;
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if (totalSize > 1000 * 1000) {
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totalSizeString = [NSString stringWithFormat:@"%.1fM",totalSize / 1000.0f /1000.0f];
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} else if (totalSize > 1000) {
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totalSizeString = [NSString stringWithFormat:@"%.1fKB",totalSize / 1000.0f ];
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} else {
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totalSizeString = [NSString stringWithFormat:@"%.1fKB",totalSize / 1000.0f];
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}
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return totalSizeString;
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}
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// 清除cachePath文件夹下缓存大小
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+ (BOOL)clearCaches {
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// 拿到cachePath路径的下一级目录的子文件夹
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// contentsOfDirectoryAtPath:error:递归
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// subpathsAtPath:不递归
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NSArray *subpathArray = [fileManager contentsOfDirectoryAtPath:cachePath error:nil];
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// 如果数组为空，说明没有缓存或者用户已经清理过，此时直接return
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if (subpathArray.count == 0) {
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#ifdef DEBUG
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xLog(@"此缓存路径很干净,不需要再清理了");
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#else
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#endif
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return NO;
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}
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NSError *error = nil;
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NSString *filePath = nil;
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BOOL flag = NO;
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for (NSString *subpath in subpathArray) {
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filePath = [cachePath stringByAppendingPathComponent:subpath];
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if ([fileManager fileExistsAtPath:cachePath]) {
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// 删除子文件夹
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BOOL isRemoveSuccessed = [fileManager removeItemAtPath:filePath error:&error];
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if (isRemoveSuccessed) { // 删除成功
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flag = YES;
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}
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}
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}
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if (NO == flag) {
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#ifdef DEBUG
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NSLog(@"提示:您已经清理了所有可以访问的文件,不可访问的文件无法删除"); // 调试阶段才打印
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#else
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#endif
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}
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return flag;
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}
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@end
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