识别应用程序何时首次启动 WP8 [英] Recognize when is the app first launched WP8

问题描述

有谁知道我如何识别应用程序何时首次启动?我只需要在安装后第一次启动时显示消息对话框.谢谢...

Does anybody know how can I recognize when is the app first launched? I need to show message dialog only at the first start after install. Thanks...

推荐答案

您可以使用 IsolatedStorageSettings 并检查标志.

You can use IsolatedStorageSettings and check for a flag.

  var settings = IsolatedStorageSettings.ApplicationSettings;
  if (!settings.Contains("WasLaunched")) {
    MessageBox.Show("First time to launch");
    settings.Add("WasLaunched", true);
  }

请注意，重新部署您的应用程序将重置该标志，因为它只是一个保存在独立存储中的文件，但如果您从模拟器/实际设备中启动您的应用程序，这应该可以工作.

Note that re-deploying your app will reset the flag since its just a file saved in Isolated Storage but this should work if you launch your app from within emulator/actual device.

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