android - 动态设置底板的最大展开高度

Question

How to set maximum expanded height in android support design bottom sheet?

这个问题是上述问题的扩展，我想设置工作表的最大展开高度，但根据屏幕尺寸动态设置。

我尝试为实现底部行为的 View 设置新的布局参数，但它没有任何好处。

Answer 1

请使用这个并冷静:)

1. const val BOTTOMSHEET_HEIGHT_TO_SCREEN_HEIGHT_RATIO = 0.80//根据您的要求更改
2. 覆盖bottomsheetFragment中的onCreateDialog()

<小时/>

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val dialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog
        dialog.setOnShowListener {
            dialog.findViewById<FrameLayout>(com.google.android.material.R.id.design_bottom_sheet)
                ?.apply {
                    val maxDesiredHeight =
                        (resources.displayMetrics.heightPixels * BOTTOMSHEET_HEIGHT_TO_SCREEN_HEIGHT_RATIO).toInt()
                    if (this.height > maxDesiredHeight) {
                        val bottomSheetLayoutParams = this.layoutParams
                        bottomSheetLayoutParams.height = maxDesiredHeight
                        this.layoutParams = bottomSheetLayoutParams
                    }
                    BottomSheetBehavior.from(this)?.apply {
                        this.state = BottomSheetBehavior.STATE_EXPANDED
                        this.skipCollapsed = true
                    }
                }
        }
        return dialog
    }