动态更换启动项图片

NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];

NSString *loadingImageDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"STH.app"];

downloadFilepath = [loadingImageDirectory stringByAppendingPathComponent:@"Default.png"];

NSMutableDictionary *paramDict = [[NSMutableDictionary alloc] init];

[paramDict setValue:@"1" forKey:@"clientId"];

[paramDict setValue:@"0" forKey:@"type"];

STHCommandResult *result = [[STHManager instance] doCommand:SCGetCommonParam :paramDict];

if (result.errorCode == ECOK) {

NSString* imageUrlFilePath = [documentsDirectory stringByAppendingPathComponent:@"imageUrl.plist"];

NSURL *loadingImageUrl = [NSURL URLWithString:[(SOSetting *)[[STHManager instance].sthInfo.commonParamSet objectForKey:@"0"] value]];

if([[NSFileManager defaultManager]fileExistsAtPath:imageUrlFilePath]) //如果记录图片地址文档存在

{

NSMutableString* imageUrlString = [[NSMutableString alloc]initWithContentsOfFile:imageUrlFilePath encoding:NSUnicodeStringEncoding error:nil];

if(![[loadingImageUrl absoluteString] isEqualToString:imageUrlString])

{

[imageUrlString setString:[loadingImageUrl absoluteString]];

[imageUrlString writeToFile:imageUrlFilePath atomically:YES encoding:NSUnicodeStringEncoding error:nil];

// 异步加载

UIImage *cachedImage = [ [STHManager instance].webImageManager imageWithURL:loadingImageUrl];

if (cachedImage) {

// 如果Cache命中，则直接利用缓存的图片进行有关操作

NSData *lodingImage = UIImagePNGRepresentation(cachedImage);

[lodingImage writeToFile:downloadFilepath atomically:YES];

} else {

// 如果Cache没有命中，则去下载指定网络位置的图片，并且给出一个委托方法

// Start an async download

[[STHManager instance].webImageManager downloadWithURL:loadingImageUrl delegate:self];

}

else { // 如果不存在，则创建文档

NSMutableString* imageUrlString = [[NSMutableString alloc]initWithString:loadingImageUrl.absoluteString];