Android M 检测权限对话框是否可见

Question

如何以编程方式确定权限对话框是否对用户可见，以便我知道在这种情况下该怎么做？

Answer 1

@Override
protected void onStart() {
    super.onStart();
        ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
        if ("com.android.packageinstaller.permission.ui.GrantPermissionsActivity".equals(cn.getClassName())){
            //permission dialog is displayed
        }
}`

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