隐藏子屏幕/片段的android底部导航视图

2 回答

• 0

  您必须在MainActivity中创建一个方法以获得可见性 . 从要显示或隐藏的片段调用该方法 .

  我遇到这种情况的一件事是，底部导航可见性没有被正确消除 . 所以我将底部导航视图放在相对布局中并隐藏该父视图 .

  回复于 2024-04-26T07:19:01+08:00
• 3

  您可以使用NavController.OnNavigatedListener来实现此行为（在Activity onCreate中设置它）：

  findNavController(R.id.container).addOnNavigatedListener { _, destination ->
      when (destination.id) {
          R.id.dashboardFragment -> showBottomNavigation()
          else -> hideBottomNavigation()
      }
  }
  
  private fun hideBottomNavigation() {
      // bottom_navigation is BottomNavigationView
      with(bottom_navigation) {
          if (visibility == View.VISIBLE && alpha == 1f) {
              animate()
                      .alpha(0f)
                      .withEndAction { visibility = View.GONE }
                      .duration = EXIT_DURATION
          }
      }
  }
  
  private fun showBottomNavigation() {
      // bottom_navigation is BottomNavigationView
      with(bottom_navigation) {
          visibility = View.VISIBLE
          animate()
                  .alpha(1f)
                  .duration = ENTER_DURATION
      }
  }
  

  回复于 2024-04-26T07:19:01+08:00