kotlin - onApplyWindowInsets(WindowInsets insets)没有被调用

我当前正在使用扩展约束布局的自定义 View ，但是我不确定在onApplyWindowInsets(WindowInsets insets) View 中不会触发此覆盖的方法，不确定会丢失什么。

  class TestCustomView @JvmOverloads constructor(
  context: Context,
  attrs: AttributeSet? = null,
  defStyleAttr: Int = 0
) : ConstraintLayout(context, attrs, defStyleAttr) {


    init {


    }
    //This method one not get called
    override fun onApplyWindowInsets(insets: WindowInsets): WindowInsets {
    return super.onApplyWindowInsets(insets)
        val statusBarHeight = insets.systemWindowInsetTop
    }


    override fun fitSystemWindows(insets: Rect): Boolean {
    if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
      // Intentionally do not modify the bottom inset. For some reason,
      // if the bottom inset is modified, window resizing stops working.
      insets.left = 0
      insets.top = 0
      insets.right = 0
    }
    return super.fitSystemWindows(insets)
  }


}

最佳答案

一旦插图被消耗掉，向下传播就停止了。看起来更高的东西正在消耗可用的东西。请参见 WindowsInset 中的 isConsumed() 。