如何在进入上下文操作模式时更改状态栏颜色

Question

我的应用使用了继承Theme.MaterialComponents.Light.NoActionBar的应用主题。当用户选择一个列表项并进入上下文操作模式时，我想将操作栏更改为深灰色。我正在使用以下代码来实现相同的目的：

在themes.xml中：

<item name="windowActionModeOverlay">true</item>
<item name="actionModeStyle">@style/Widget.App.ActionMode</item>
<item name="actionModeCloseDrawable">@drawable/ic_close_24dp</item>
<item name="actionBarTheme">@style/ThemeOverlay.MaterialComponents.Dark.ActionBar</item>

在styles.xml中：

<style name="Widget.App.ActionMode" parent="Widget.AppCompat.ActionMode">
    <item name="background">@color/grey_100</item>
</style>

在我的片段中：

val callback = object: ActionMode.Callback {
    override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {
        requireActivity().menuInflater.inflate(R.menu.contextual_action_bar, menu)
        return true
    }

    override fun onPrepareActionMode(mode: ActionMode?, menu: Menu?): Boolean {return false}

    override fun onActionItemClicked(mode: ActionMode?, item: MenuItem?): Boolean {return false}

    override fun onDestroyActionMode(mode: ActionMode?) {}
}

val actionMode = requireActivity().startActionMode(callback)
actionMode?.title = "1 selected"

使用这段代码，我得到以下结果：

我们如何更改此代码以使其也更改状态栏背景和图标颜色？以下是有多少应用程序（包括 Google 文件应用程序）执行此操作的示例：

注意它如何正确地更改状态栏背景颜色以及相应的图标颜色。

我已经尝试了答案，但它并没有像许多用户在那里评论的那样顺利过渡。是否有任何标准方法可以实现所需的行为？

Answer 1

此代码段将更改背景和标题颜色

在styles.xml

<style name="Widget.App.ActionMode" parent="@style/Widget.AppCompat.ActionMode">
    <item name="background">@color/grey_100</item>
    <item name="titleTextStyle">@style/ActionModeTitleTextStyle</item>
</style>

<style name="ActionModeTitleTextStyle" parent="@style/TextAppearance.AppCompat.Widget.ActionMode.Title">
    <item name="android:textColor">@android:color/white</item>
</style>

Answer 2

上下文操作栏（CAB）为show/hidden时有两个请求：

切换状态栏图标灯模式。
同步 CAB 和状态栏之间的彩色动画。

在 CAB 和状态栏之间同步彩色动画

您可以使用 ArgbEvaluator 调整状态栏颜色变化的动画效果，调整后的持续时间趋于 CAB 持续时间（经过反复试验，它接近 300 毫秒；我没有确切值的文档线索, 但您可以根据需要进行调整):

fun switchStatusColor(colorFrom: Int, colorTo: Int, duration: Long) {
    val colorAnimation = ValueAnimator.ofObject(ArgbEvaluator(), colorFrom, colorTo)
    colorAnimation.duration = duration // milliseconds

    colorAnimation.addUpdateListener { animator ->
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
            window.statusBarColor = animator.animatedValue as Int
    }
    colorAnimation.start()
}

这需要在 onCreateActionMode & onDestroyActionMode:

中使用适当的颜色来调用

val callback = object : ActionMode.Callback {
    override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {
        menuInflater.inflate(R.menu.contextual_action_bar, menu)
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            switchStatusColor(
                window.statusBarColor,
                ContextCompat.getColor(this@MainActivity, R.color.grey_100), 300
            )

        }

        return true
    }

    override fun onPrepareActionMode(mode: ActionMode?, menu: Menu?): Boolean {
        return false
    }

    override fun onActionItemClicked(mode: ActionMode?, item: MenuItem?): Boolean {
        return false
    }

    override fun onDestroyActionMode(mode: ActionMode?) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            switchStatusColor(
                window.statusBarColor,
                ContextCompat.getColor(this@MainActivity, R.color.white), 300
            )
        }

    }

}

切换状态栏图标灯模式

对于API 30级以下（Android R），使用systemUiVisibility，WindowInsetsController对于API 30级及以上：

出于某种原因，WindowInsetsController 对我不起作用，即使使用以下 4 个版本，但幸好旧标志有效，所以我将其保持在 API 级别 > 30：

private fun switchStatusBarIconLight(isLight: Boolean) {

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        window.insetsController?.setSystemBarsAppearance(
            if (isLight) APPEARANCE_LIGHT_STATUS_BARS else 0,
            APPEARANCE_LIGHT_STATUS_BARS
        )

        WindowInsetsControllerCompat( 
            window,
            window.decorView
        ).isAppearanceLightStatusBars =
            isLight

        ViewCompat.getWindowInsetsController(window.decorView)?.apply {
            isAppearanceLightStatusBars = isLight
        }

        WindowCompat.getInsetsController(
            window,
            window.decorView
        )?.isAppearanceLightStatusBars = isLight

        window.decorView.systemUiVisibility =
            if (isLight) View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR else 0 // Deprecated in API level 30 // but only works than the above

    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (isLight) View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR else 0 // Deprecated in API level 30
    }

}

因此，工作演示：

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Setting up the status bar when the app starts
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
            window.statusBarColor = ContextCompat.getColor(this@MainActivity, R.color.white)
        switchStatusBarIconLight(true)
        

        val callback = object : ActionMode.Callback {
            override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {
                menuInflater.inflate(R.menu.contextual_action_bar, menu)
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    switchStatusColor(
                        window.statusBarColor,
                        ContextCompat.getColor(this@MainActivity, R.color.grey_100), 300
                    )
                }

                switchStatusBarIconLight(false)

                return true
            }

            override fun onPrepareActionMode(mode: ActionMode?, menu: Menu?): Boolean {
                return false
            }

            override fun onActionItemClicked(mode: ActionMode?, item: MenuItem?): Boolean {
                return false
            }

            override fun onDestroyActionMode(mode: ActionMode?) {

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    switchStatusColor(
                        window.statusBarColor,
                        ContextCompat.getColor(this@MainActivity, R.color.white), 300
                    )
                }

                switchStatusBarIconLight(true)

            }

        }
    }
        
    *
    * Animate switching the color of the status bar from the colorFrom color to the colorTo color
    * duration: animation duration.
    * */
    private fun switchStatusColor(colorFrom: Int, colorTo: Int, duration: Long) {
        val colorAnimation = ValueAnimator.ofObject(ArgbEvaluator(), colorFrom, colorTo)
        colorAnimation.duration = duration // milliseconds

        colorAnimation.addUpdateListener { animator ->
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
                window.statusBarColor = animator.animatedValue as Int
        }
        colorAnimation.start()
    }
    

    /*
    * Switch the dark mode of the status bar icons
    * When isLight is true, the status bar icons will turn light
    * */    
    private fun switchStatusBarIconLight(isLight: Boolean) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
            window.insetsController?.setSystemBarsAppearance(
                if (isLight) APPEARANCE_LIGHT_STATUS_BARS else 0,
                APPEARANCE_LIGHT_STATUS_BARS
            )
            WindowInsetsControllerCompat(
                window,
                window.decorView
            ).isAppearanceLightStatusBars =
                isLight

            ViewCompat.getWindowInsetsController(window.decorView)?.apply {
                isAppearanceLightStatusBars = isLight
            }

            WindowCompat.getInsetsController(
                window,
                window.decorView
            )?.isAppearanceLightStatusBars = isLight

            window.decorView.systemUiVisibility =
                if (isLight) View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR else 0 // Deprecated in API level 30 // but only works than the above

        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (isLight) View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR else 0 // Deprecated in API level 30
        }

    }

}

预览：

更新

另一种方法

您可以禁用动画来代替动画状态栏以与 CAB 同步。但这要求您对 CAB 使用 customView 而不是菜单。

有两个地方可以做到这一点：

显示 CAB 时

每当你调用 startSupportActionMode:

val mode = startSupportActionMode(callback)
ViewCompat.animate(mode?.customView?.parent as View).alpha(0f)

隐藏CAB时：

在onDestroyActionMode
中完成

override fun onDestroyActionMode(mode: ActionMode?) {
    // Hiding the CAB
    (mode?.customView?.parent as View).visibility = View.GONE
}

缺点是没有动画了，显示CAB有延迟，因为它只是使用alpha隐藏，所以动画仍然被消耗但因为设置了alph而看不见。这要求您在第一种方法中假定为 300 毫秒的延迟后切换状态栏颜色：

val callback = object : ActionMode.Callback {
    override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {

        val customView: View = LayoutInflater.from(this@MainActivity).inflate(
            R.layout.custom_contextual_action_bar, null
        )
        mode?.customView = customView

        Handler(Looper.getMainLooper()).postDelayed({
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                window.statusBarColor =
                    ContextCompat.getColor(this@MainActivity, R.color.grey_100)
                switchStatusBarIconLight(false)
            }
        }, 300)

        return true
    }

    override fun onPrepareActionMode(mode: ActionMode?, menu: Menu?): Boolean {
        return false
    }

    override fun onActionItemClicked(mode: ActionMode?, item: MenuItem?): Boolean {
        return false
    }

    override fun onDestroyActionMode(mode: ActionMode?) {
        // Hiding the CAB
        (mode?.customView?.parent as View).visibility = View.GONE

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            window.statusBarColor =
                ContextCompat.getColor(this@MainActivity, R.color.white)
            switchStatusBarIconLight(true)
        }

    }

}



// Call:

val mode = startSupportActionMode(callback)
ViewCompat.animate(mode?.customView?.parent as View).alpha(0f)

Answer 3

你可以试试这个：

Change status bar color with AppCompat ActionBarActivity

或者尝试以编程方式将不同的主题应用到已应用状态栏颜色的 activity。

<resources>
    <style name="AppTheme" parent="AppTheme.Base">
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>
</resources>

如何在进入上下文操作模式时更改状态栏颜色

How to change status bar color on entering contextual action mode

android

android-actionbar

contextual-action-bar

android-toolbar

在 CAB 和状态栏之间同步彩色动画

切换状态栏图标灯模式

另一种方法