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我正在开发一个由Fragments 组成的应用程序,当我单击按钮时,它应该显示和隐藏。默认情况下,我已将片段设置为可见性消失,即使这对我也不起作用:

FragmentTransaction  mFragmentTransaction = getFragmentManager().beginTransaction();
mMenuFragment = new MenuFragment();
mFragmentTransaction.add(R.id.frmMenuBar, mMenuFragment); 
mFragmentTransaction.hide(mMenuFragment);
mFragmentTransaction.addToBackStack(null);
mFragmentTransaction.commit();

下面的代码我一直点击按钮。

@Override
protected void onMenuButtonClick(View Button) {
super.onMenuButtonClick(Button);
System.out.println("Botton Clciked");

if (Button.isClickable()) {
    FragmentTransaction menuTransaction = getFragmentManager().beginTransaction();
    menuTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    menuTransaction.show(mMenuFragment);
    menuTransaction.addToBackStack(null);
    menuTransaction.commit();
} else {
    FragmentTransaction menuShowTransaction = getFragmentManager().beginTransaction();
    menuShowTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    menuShowTransaction.hide(mMenuFragment);
    menuShowTransaction.addToBackStack(null);
    menuShowTransaction.commit();
}
}

请任何人帮助我。

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