Error:(30, 31) 错误: 找不到符号
符号: 类 KeyEventCompat
位置: 程序包 android.support.v4.view
解决：
KeyEventCompat类被取消了 hasNoModifiers方法已经被KeyEvent实现了
报错:
if (KeyEventCompat.hasNoModifiers(event)) {
handled = arrowScroll(FOCUS_FORWARD);
} else if (KeyEventCompat.hasModifiers(event, KeyEvent.META_SHIFT_ON)) {
handled = arrowScroll(FOCUS_BACKWARD);
}
改成:
if (event.hasNoModifiers()) {
handled = arrowScroll(FOCUS_FORWARD);
} else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
handled = arrowScroll(FOCUS_BACKWARD);
}