(google官方系列)android如何弹出Bubble气泡页面

很久以前在google看到了一个好玩的示例

1. 环境
2. 虚拟机使用的API32
3. minSdkVersion 30

以下展示这个示例最重要的功能弹出bubble气泡 MainActivity

class MainActivity : AppCompatActivity() {
    private val NEW_MESSAGE = "new_message"
    private val DEFATUL_ID = "default_shortCutId"
    private val notificationManager: NotificationManager by lazy {
        baseContext.getSystemService()!!
    }

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

    private fun updateShortCutInfo() {
        val build = ShortcutInfoCompat.Builder(baseContext, DEFATUL_ID)
            .setShortLabel("defaultActivity")
            .setLongLived(true)
            .setIntent(
                Intent(baseContext, MainActivity::class.java)
                    .setAction(Intent.ACTION_VIEW),
            )
            .build()
        ShortcutManagerCompat.pushDynamicShortcut(baseContext, build)
    }

    private fun showNotification() {
        val user = Person.Builder().setName("user").build()
        val messagingStyle = NotificationCompat.MessagingStyle(user)
        val iconCompat =
            IconCompat.createWithResource(baseContext, R.mipmap.ic_launcher_round)
        val pendingIntent = PendingIntent.getActivity(baseContext,
            2,
            Intent(baseContext, BubbleActivity::class.java),
            PendingIntent.FLAG_MUTABLE)
        val builder = NotificationCompat.Builder(baseContext, NEW_MESSAGE).setBubbleMetadata(
            NotificationCompat.BubbleMetadata.Builder(pendingIntent, iconCompat)
                .setDesiredHeight(baseContext.resources.getDimensionPixelSize(R.dimen.bubble_height))
                .setAutoExpandBubble(true)
                .setSuppressNotification(true)
                .build()
        )
            .setSmallIcon(R.mipmap.ic_launcher_round)
            .setShortcutId(DEFATUL_ID)
            .setStyle(messagingStyle)
        notificationManager.notify(1573, builder.build())
    }

    private fun setNotification() {
        val notificationChannel =
            NotificationChannel(NEW_MESSAGE, "new Message", NotificationManager.IMPORTANCE_HIGH)
        notificationManager.createNotificationChannel(notificationChannel)
    }
}

被打开的气泡activity 气泡内部什么代码都没有布局就是简简单单的一个textview

class BubbleActivity : AppCompatActivity() {

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

<!--气泡activity必须设置
        documentLaunchMode(将有此活动的多个实例。)
        resizeableActivity(扩展的气泡由系统 UI 调整大小)
        allowEmbedded(扩展的气泡嵌入在系统UI中)-->
        <activity
            android:name=".BubbleActivity"
            android:allowEmbedded="true"
            android:documentLaunchMode="always"
            android:exported="true"
            android:resizeableActivity="true" />

ok运行