更改Android設備管理設置

Question

如果您將Android設備設置爲設置 - >安全設置，則在設備管理部分下方會顯示驗證應用程序的一些設置。

在AOSP上工作時，我試圖讓一些測試軟件工作。所以部分需要我啓用和禁用此功能。我已經有代碼，以禁用一些其他的功能，它們看起來就像這樣：

//Allow mock locations 
    Settings.Secure.putInt(getContentResolver(), 
      Settings.Secure.ALLOW_MOCK_LOCATION, 
      1); 

    //Stay on while plugged in 
    Settings.Global.putInt(getContentResolver(), 
      Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 
      BatteryManager.BATTERY_PLUGGED_USB); 

注*我以root身份運行，所以我可以更改這些設置。所以爲了澄清，我的問題是如何更改設置驗證應用程序，位於哪裏？

Answer 1

您正在查找Settings.Global.PACKAGE_VERIFIER_ENABLE。它似乎沒有在文檔站點上，但你可以在源代碼中看到它。

定義：

android.provider.Settings.java

實施例使用由默認設置應用程式：

com.android.settings.SecuritySettings.java

Answer 2

由於（與upvotes）@Paradopolis和@Geobits w^ith這個問題和答案組合。 @Geobits給出了正確的答案。我張貼我的，如果有人需要一個詳細的總結和方法來獲取/設置該選項的狀態。

PACKAGE_VERIFIER_ENABLE首先在API級14與android.provider.Settings.Secure下"verifier_enable"值定義。

API級14（4.0.1_r1）：

public static final String PACKAGE_VERIFIER_ENABLE = "verifier_enable"; 

它的值和定義的類API級17其值android.provider.Settings.Global

API級17（4.2_r1）下成爲"package_verifier_enable"之後改變：

public static final String PACKAGE_VERIFIER_ENABLE = "package_verifier_enable"; 

PACKAGE_VERIFIER_ENABLE屬性被定義爲public，但在定義時被註解隱藏。所以我們不能使用它作爲Settings.Secure.PACKAGE_VERIFIER_ENABLE或Settings.Global.PACKAGE_VERIFIER_ENABLE，但我們可以使用它的價值。

如果有人需要確定是否包驗證被選中/取消，或選中/取消其程序可以使用下面的類：

public abstract class DeviceSettings { 

    public enum SettingsCheckStatus { 
     CHECKED, UNCHECKED, UNDEFINED 
    } 

    public static SettingsCheckStatus isVerifyAppsChecked(Context context) { 
     // PACKAGE_VERIFIER_ENABLE is added after API level 14. 
     // Its value changed at API level 17 

     int packageVerifierEnabledAsInt = -1; 
     if (Build.VERSION.SDK_INT >= 17) { 
      packageVerifierEnabledAsInt = Settings.Global.getInt(context.getContentResolver(), "package_verifier_enable", -1); 
     } else if (Build.VERSION.SDK_INT >= 14) { 
      packageVerifierEnabledAsInt = Settings.Secure.getInt(context.getContentResolver(), "verifier_enable", -1); 
     } else { 
      // No package verification option before API Level 14 
     } 

     SettingsCheckStatus settingsCheckStatus = SettingsCheckStatus.UNDEFINED; 
     switch (packageVerifierEnabledAsInt) { 
     case 0: 
      settingsCheckStatus = SettingsCheckStatus.UNCHECKED; 
      break; 
     case 1: 
      settingsCheckStatus = SettingsCheckStatus.CHECKED; 
      break; 
     default: 
      break; 
     } 

     return settingsCheckStatus; 
    } 

    /** 
    * 
    * @param context 
    * @param checked 
    * @return 
    * 
    * You must add <b>android.permission.WRITE_SECURE_SETTINGS</b> to your application's manifest file to use this method. 
    * Keep in mind, lint error checking may show an error on your manifest. <a href="http://stackoverflow.com/questions/13801984/permission-is-only-granted-to-system-app">See link to solve it.</a> <br> 
    * Note that, this method <b>can only work on rooted devices or if your application is going to be a system app.<b> 
    * 
    */ 
    public static boolean setVerifyAppsChecked(Context context, boolean checked) { 
     boolean operationCompletedSuccessfully = false; 
     int packageVerifierEnabledAsInt = checked ? 1 : 0; 
     try { 
      if (Build.VERSION.SDK_INT >= 17) { 
       operationCompletedSuccessfully = Settings.Global.putInt(context.getContentResolver(), "package_verifier_enable", packageVerifierEnabledAsInt); 
      } else if (Build.VERSION.SDK_INT >= 14) { 
       operationCompletedSuccessfully = Settings.Secure.putInt(context.getContentResolver(), "verifier_enable", packageVerifierEnabledAsInt); 
      } else { 
       // No package verification option before API Level 14 
      } 
     } catch (Throwable t) { 
      // Your device is not rooted or your app is not a system app. 
     } 

     return operationCompletedSuccessfully; 
    } 
}