不需要Activity的AlertDialog

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原创最新推荐文章于 2025-09-15 23:34:50 发布 368 阅读 AI 写同款· GEO 优化 ›

全局的AlertDialog，不依靠activity 情景：后台service接收到某个广播后发出事件，在application中接收到事件，处理事件是要弹出一个dialog，直接显示会报错： android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application 在网上查了很久，终于找到方法，作为笔记阅读详情

 private fun loadingAlertDialog() {
        var layoutParams: WindowManager.LayoutParams? = null
        val inflate = View.inflate(FontsApp.instance, R.layout.layer_lock_dialog, null)
        val builder = AlertDialog.Builder(FontsApp.instance, R.style.Translucent_NoTitle)
                .setView(inflate)
       val create =  builder.create()
        inflate.findViewById<View>(R.id.iv_unlock).setOnClickListener {
            create.dismiss()

        }
        //rootView顶层View获取windowToken
        val windowToken: IBinder? = rootView?.windowToken
        val window = create.window
        layoutParams = window?.attributes
        layoutParams?.token = windowToken
        layoutParams?.type = 1000
        window?.attributes = layoutParams
        window?.addFlags(WindowManager.LayoutParams.ALPHA_CHANGED)
        create.show()

    }

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