Android應用獲取通知欄權限是否開啓--以及跳轉到系統設置界面--解決方案

因爲項目用到推送功能，所以需求是知道用戶是否開啓了通知欄的權限，並且提供滑動按鈕進行跳轉以便用戶進行關閉或者開啓。

1.獲取通知欄權限是否開啓：

/**
 * 獲取通知欄權限是否開啓
 * 
 */

public class NotificationsUtils {
   private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";
   private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";

   @SuppressLint("NewApi")
   public static boolean isNotificationEnabled(Context context) {

      AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
      ApplicationInfo appInfo = context.getApplicationInfo();
      String pkg = context.getApplicationContext().getPackageName();
      int uid = appInfo.uid;

      Class appOpsClass = null;
      /* Context.APP_OPS_MANAGER */
      try {
         appOpsClass = Class.forName(AppOpsManager.class.getName());
         Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE,
               String.class);
         Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);

         int value = (Integer) opPostNotificationValue.get(Integer.class);
         return ((Integer) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg) == AppOpsManager.MODE_ALLOWED);

      } catch (ClassNotFoundException e) {
         e.printStackTrace();
      } catch (NoSuchMethodException e) {
         e.printStackTrace();
      } catch (NoSuchFieldException e) {
         e.printStackTrace();
      } catch (InvocationTargetException e) {
         e.printStackTrace();
      } catch (IllegalAccessException e) {
         e.printStackTrace();
      }
      return false;
   }
}

2.進入系統設置界面

protected void requestPermission(int requestCode) {
   // TODO Auto-generated method stub
   // 6.0以上系統纔可以判斷權限
   // 進入設置系統應用權限界面
      Intent intent = new Intent(Settings.ACTION_SETTINGS);
      startActivity(intent)；
}

這個功能不是特別重要，但是有時候確實有這樣的需求。
本文轉載於敕勒歌的博客，原文鏈接：
http://blog.csdn.net/qq_22637473/article/details/53466425