判断应用是否开启通知栏及跳转到设置页面

今天做项目用到通知，发现在oppo和360手机上，如果不去手动打开状态栏可以获取通知的设置，就算发送通知也看不到消息，但是小米手机就没事，有人说获取手机型号进行适配，但是安卓手机机型太多，那样做是在是头疼，后来有人说可以判断通知栏是否打开，这个方法不错，避免了要去判断所有的机型。

 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);
            if ((Integer) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg) == AppOpsManager.MODE_ALLOWED){
                Toast.makeText(this,"true",Toast.LENGTH_SHORT).show();
            }else {
                Toast.makeText(this,"false",Toast.LENGTH_SHORT).show();
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage("是否跳转到设置页面");
                builder.setTitle("提示");
                builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        goToSet();
                        dialog.dismiss();
                    }
                });
                builder.setNegativeButton("取消",new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
                builder.create().show();
            }
            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;
    }

在这里返回true,表示已经打开通知栏,返回false,弹出dialog选择是否跳转到设置页面,页面跳转方法如下:

 private void goToSet(){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.BASE) {
            // 进入设置系统应用权限界面
            Intent intent = new Intent(Settings.ACTION_SETTINGS);
            startActivity(intent);
            return;
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {// 运行系统在5.x环境使用
            // 进入设置系统应用权限界面
            Intent intent = new Intent(Settings.ACTION_SETTINGS);
            startActivity(intent);
            return;
        }
    }