改变键盘的颜色

苹果iPhone和iPod touch的键盘颜色其实是可以通过代码更改的，这样能更匹配您App的界面风格，下面是改

只有这2种数字键盘才有效果。UIKeyboardTypeNumberPad，UIKeyboardTypePhonePad
2. 。keyboardAppearance ＝ UIKeyboardAppearanceAlert

- (void)textViewDidBeginEditing:(UITextView *)textView{
NSArray *ws = [[UIApplication sharedApplication] windows];
for(UIView *w in ws){
NSArray *vs = [w subviews];
for(UIView *v in vs){
if([[NSString stringWithUTF8String:object_getClassName(v)] isEqualToString:@"UIKeyboard"]){
v.backgroundColor = [UIColor redColor];
}
}
}
}