我正在尝试开发一个需要能够捕获屏幕内容的应用程序。我的目标是棒棒糖以避免对 root 的要求。当尝试通过调用 getSystemService() 获取 MediaProjectionManager 的实例时，我在 Android Studio 中报告了以下错误：
Must be one of: Context.POWER_SERVICE, Context.WINDOW_SERVICE, Context.LAYOUT_INFLATER_SERVICE, Context.ACCOUNT_SERVICE, Context.ACTIVITY_SERVICE, Context.ALARM_SERVICE, Context.NOTIFICATION_SERVICE, Context.ACCESSIBILITY_SERVICE, Context.CAPTIONING_SERVICE, Context.KEYGUARD_SERVICE, Context.LOCATION_SERVICE, Context.SEARCH_SERVICE, Context.SENSOR_SERVICE, Context.STORAGE_SERVICE, Context.WALLPAPER_SERVICE, Context.VIBRATOR_SERVICE, Context.CONNECTIVITY_SERVICE, Context.WIFI_SERVICE, Context.WIFI_P2P_SERVICE, Context.NSD_SERVICE, Context.AUDIO_SERVICE, Context.MEDIA_ROUTER_SERVICE, Context.TELEPHONY_SERVICE, Context.CLIPBOARD_SERVICE, Context.INPUT_METHOD_SERVICE, Context.TEXT_SERVICES_MANAGER_SERVICE, Context.DROPBOX_SERVICE, Context.DEVICE_POLICY_SERVICE, Context.UI_MODE_SERVICE, Context.DOWNLOAD_SERVICE, Context.NFC_SERVICE, Context.BLUETOOTH_SERVICE, Context.USB_SERVICE, Context.INPUT_SERVICE, Context.DISPLAY_SERVICE, Context.USER_SERVICE, Context.PRINT_SERVICE less... (Ctrl+F1)
Reports two types of problems:
* Supplying the wrong type of resource identifier. For example, when calling Resources.getString(int id), you should be passing R.string.something, not R.drawable.something.
* Passing the wrong constant to a method which expects one of a specific set of constants. For example, when calling View#setLayoutDirection, the parameter must be android.view.View.LAYOUT_DIRECTION_LTR or android.view.View.LAYOUT_DIRECTION_RTL.
我目前不知道为什么这个常量不被认为是有效的，它作为一个自动完成选项存在，所以它存在，并且它显示在我在棒棒糖中看到的屏幕捕获的所有示例代码中。我已验证项目设置将 Android SDK 21 指定为最小值和目标。我可能会遗漏其他明显/愚蠢的东西，从而导致此错误吗？
更新：将完全相同的代码带到 Eclipse 中，它可以正常工作。所以这似乎与 Android Studio 中的某些内容有关。
