57 lines
1.7 KiB
Objective-C
57 lines
1.7 KiB
Objective-C
//
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// NSDictionary+AvoidCrash.m
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// https://github.com/chenfanfang/AvoidCrash
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//
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// Created by mac on 16/9/21.
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// Copyright © 2016年 chenfanfang. All rights reserved.
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//
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#import "NSDictionary+AvoidCrash.h"
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#import "AvoidCrash.h"
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@implementation NSDictionary (AvoidCrash)
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+ (void)avoidCrashExchangeMethod {
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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[AvoidCrash exchangeClassMethod:self method1Sel:@selector(dictionaryWithObjects:forKeys:count:) method2Sel:@selector(avoidCrashDictionaryWithObjects:forKeys:count:)];
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});
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}
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+ (instancetype)avoidCrashDictionaryWithObjects:(const id _Nonnull __unsafe_unretained *)objects forKeys:(const id<NSCopying> _Nonnull __unsafe_unretained *)keys count:(NSUInteger)cnt {
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id instance = nil;
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@try {
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instance = [self avoidCrashDictionaryWithObjects:objects forKeys:keys count:cnt];
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}
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@catch (NSException *exception) {
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NSString *defaultToDo = @"AvoidCrash default is to remove nil key-values and instance a dictionary.";
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[AvoidCrash noteErrorWithException:exception defaultToDo:defaultToDo];
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//处理错误的数据，然后重新初始化一个字典
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NSUInteger index = 0;
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id _Nonnull __unsafe_unretained newObjects[cnt];
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id _Nonnull __unsafe_unretained newkeys[cnt];
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for (int i = 0; i < cnt; i++) {
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if (objects[i] && keys[i]) {
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newObjects[index] = objects[i];
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newkeys[index] = keys[i];
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index++;
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}
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}
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instance = [self avoidCrashDictionaryWithObjects:newObjects forKeys:newkeys count:index];
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}
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@finally {
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return instance;
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}
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}
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@end
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