Caused by: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application

在广播中启动一个Dialog时出现如下错误信息：Caused by: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application

在代码中添加了dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);错误信息没有消除，

此时在Manifest.xml文件中添加系统权限，并添加：

允许应用使用TYPE_SYSTEM_ALERT来打开窗口，并将窗口显示于其他应用的顶端

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

的权限，对话框可以起来了。

时间： 2024-10-14 06:25:19

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