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-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

方法1  [self.view endEditing:YES];

2    [[UIApplication sharedApplication]sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];

3   [[[UIApplication sharedApplication]keyWindow]endEditing:YES];

}

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原文地址：http://www.cnblogs.com/xuqf2iOS/p/4676723.html