java.lang.IllegalStateException: No activity 错误...

使用  

public void addFragmentToStack(int containerViewId, Fragment fragment) {
		if (mCurrentFragment != null) {
			getSupportFragmentManager().beginTransaction()
					.detach(mCurrentFragment)
					.replace(containerViewId, fragment)
					.attach(fragment).addToBackStack(null).commit();
		} else {
			FragmentTransaction ft = getSupportFragmentManager()
					
			// 设置动画效果
			ft.replace(containerViewId, fragment);
			ft.commit();
		}

		mCurrentFragment = fragment;

	}