//
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// Copyright © 2019 dahua. All rights reserved.
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//
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#import "UIImage+DHGIF.h"
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#import <SDWebImage/SDWebImage.h>
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@implementation UIImage (DHGIF)
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- (BOOL)dh_writeToFileAtPath:(NSString*)aPath
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{
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if ((self == nil) || (aPath == nil) || ([aPath isEqualToString:@""]))
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return NO;
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@try
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{
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NSData *imageData = nil;
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NSString *ext = [aPath pathExtension];
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if ([ext isEqualToString:@"png"])
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{
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imageData = UIImagePNGRepresentation(self);
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}
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else if ([ext isEqualToString:@"gif"])
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{
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imageData = [self sd_imageDataAsFormat:SDImageFormatGIF];
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}
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else
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{
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imageData = UIImageJPEGRepresentation(self, 1);
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}
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if ((imageData == nil) || ([imageData length] <= 0))
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return NO;
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[imageData writeToFile:aPath atomically:YES];
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return YES;
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}
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@catch (NSException *e)
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{
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NSLog(@"create thumbnail exception.");
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}
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return NO;
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}
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+ (UIImage *)dh_imageAutoWithData:(NSData *)data
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{
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//判断data是否是gif格式，然后做对应读取data
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SDImageFormat type = [NSData sd_imageFormatForImageData:data];
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if (type == SDImageFormatGIF) {
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return [UIImage sd_imageWithGIFData:data];
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} else {
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return [UIImage imageWithData:data];
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}
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}
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+ (UIImage *)dh_imageAutoWithPath:(NSString *)path
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{
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NSData *data = [NSData dataWithContentsOfFile:path];
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return [self dh_imageAutoWithData:data];
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}
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+ (BOOL)dh_isGIFFromUrl:(nullable NSString *)url
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{
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if (url == nil) {
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//#if DEBUG
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// @throw [NSException exceptionWithName:@"崩溃" reason:@"crush's reason：当前url为空" userInfo:nil];
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//#else
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// NSLog(@"========== 当前url为空 ==========");
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//#endif
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return NO;
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} else {
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//这种转data很耗性能
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// NSURL *curURL = [NSURL URLWithString:url];
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// NSData * data = [NSData dataWithContentsOfURL:curURL];
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// SDImageFormat type = [NSData sd_imageFormatForImageData:data];
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// if (type == SDImageFormatGIF) {
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NSString *typeStr = [[NSURL URLWithString:url] pathExtension];
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if ([typeStr isEqualToString:@"gif"] || [typeStr isEqualToString:@"GIF"]) {
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return YES;
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} else {
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return NO;
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}
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}
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}
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@end
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