本文實例講述了Android開發實現判斷通知欄是否打開及前往設置頁面的方法。分享給大家供大家參考,具體如下:
項目中用到日程提醒功能,如果應用的通知欄沒有打開,則需要提示用戶前去打開通知欄,判斷通知欄是否打開代碼如下:
private boolean isNotificationEnabled(Context context) { String CHECK_OP_NO_THROW = "checkOpNoThrow"; String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION"; 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;}返回值為true時,通知欄打開,false未打開。
以下代碼為前往設置頁面:
private void goToSet(){ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.BASE) { // 進入設置系統應用權限界面 Intent intent = new Intent(Settings.ACTION_SETTINGS); startActivity(intent); return; } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {// 運行系統在5.x環境使用 // 進入設置系統應用權限界面 Intent intent = new Intent(Settings.ACTION_SETTINGS); startActivity(intent); return; }}注:測試功能時發現,若在應用設置中關閉app的通知欄/不勾選顯示通知,則Toast無法顯示
希望本文所述對大家Android程序設計有所幫助。
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