Android监听键盘弹出关闭事件

/**
 * 监听键盘开关
 */
private void setKeyboardListener() {
    final View rootView = getWindow().getDecorView().findViewById(android.R.id.content);
    rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {

            boolean mKeyboardUp = isKeyboardShown(rootView);
            if (mKeyboardUp) {
                // 键盘弹出
            } else {
                // 键盘收起
            }
        }
    });
}

/**
 * 当前键盘是否显示
 *
 * @param rootView rootView
 * @return bool
 */
private boolean isKeyboardShown(View rootView) {
    final int softKeyboardHeight = 100;
    Rect r = new Rect();
    rootView.getWindowVisibleDisplayFrame(r);
    DisplayMetrics dm = rootView.getResources().getDisplayMetrics();
    int heightDiff = rootView.getBottom() - r.bottom;
    return heightDiff > softKeyboardHeight * dm.density;
}

在需要的地方，如onCreate里调用setKeyboardListener即可