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[NSThread detachNewThreadSelector:@selector(delTargetBook) toTarget:self withObject:nil];

-(void)delTargetBook

{

NSAutoreleasePool *pool =[[NSAutoreleasePool alloc] init];

        //代码部分

        //代码部分

        //回主线程执行

[self performSelectorOnMainThread:@selector(didDelTargetBook) withObject:nil waitUntilDone:NO];

[pool release];

}

-(void)didDelTargetBook

{

[MBProgressHUD hideHUDForView:self animated:YES];

if ([delegate_ respondsToSelector:@selector(btnOfLibraryBookWasDelete:)]) {

[delegate_ btnOfLibraryBookWasDelete:self];

}

}