在类中，进行编辑下面的代码：

NSLog(@"main thread begin...");

[self performSelectorInBackground:@selector(doSomething:) withObject:nil];

NSLog(@"main thread end.....");

- (void) doSomething:(id)sender

{

NSLog( @"one thread begin..." );

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

for (int i=0; i<self.StarName_Final.count; i++) {

[self SaveToDataBase:[StarName_Final objectAtIndex:i]];

}

NSLog( @"one thread end..." );

[pool release];

}

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