【需求】完善推送权限

@@ -17,6 +17,7 @@ import com.mixpush.huawei.HuaweiPushProvider.HUAWEI
 import com.ewin.flutter_push.EwinMixPushReceiver
 import com.ewin.flutter_push.enums.MixListenerTypeEnum
 import com.ewin.flutter_push.utils.CommonUtil
+import com.ewin.flutter_push.utils.NotificationManagerUtils
 import com.alibaba.fastjson.JSON
 import com.mixpush.core.MixPushMessage
 import android.content.ComponentName;
@@ -76,15 +77,10 @@ class FlutterPushPlugin: FlutterPlugin, MethodCallHandler {
       })
       result.success(true)
     } else if(call.method == "checkPermission") {
-      result.success(NotificationManagerCompat.from(context).areNotificationsEnabled())
+      result.success(NotificationManagerUtils.isPermissionOpen(context))
     } else if(call.method == "getPermission") {
       CommonUtil.runMainThread {
-        val intent = Intent().apply {
-          action = Settings.ACTION_APP_NOTIFICATION_SETTINGS
-          putExtra(Settings.EXTRA_APP_PACKAGE, context.packageName)
-          addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
-        }
-        context.startActivity(intent)
+        NotificationManagerUtils.openPermissionSetting(context)
       }
       result.success(true)
     } else {

+package com.ewin.flutter_push.utils;
+
+import android.app.NotificationManager;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Build;
+import android.provider.Settings;
+
+import androidx.core.app.NotificationManagerCompat;
+
+public class NotificationManagerUtils {
+
+    public static boolean isPermissionOpen(Context context) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            return NotificationManagerCompat.from(context).getImportance() != NotificationManager.IMPORTANCE_NONE;
+        }
+        return NotificationManagerCompat.from(context).areNotificationsEnabled();
+    }
+
+    public static void openPermissionSetting(Context context) {
+        try {
+            Intent localIntent = new Intent();
+            localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            //直接跳转到应用通知设置的代码：
+            if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                localIntent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
+                localIntent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());
+                context.startActivity(localIntent);
+                return;
+            }
+            if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                localIntent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
+                localIntent.putExtra("app_package", context.getPackageName());
+                localIntent.putExtra("app_uid", context.getApplicationInfo().uid);
+                context.startActivity(localIntent);
+                return;
+            }
+            if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
+                localIntent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
+                localIntent.addCategory(Intent.CATEGORY_DEFAULT);
+                localIntent.setData(Uri.parse("package:" + context.getPackageName()));
+                context.startActivity(localIntent);
+                return;
+            }
+
+            //4.4以下没有从app跳转到应用通知设置页面的Action，可考虑跳转到应用详情页面,
+
+            if (Build.VERSION.SDK_INT >= 9) {
+                localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
+                localIntent.setData(Uri.fromParts("package", context.getPackageName(), null));
+                context.startActivity(localIntent);
+                return;
+            }
+
+            localIntent.setAction(Intent.ACTION_VIEW);
+            localIntent.setClassName("com.android.settings", "com.android.setting.InstalledAppDetails");
+            localIntent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());
+
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
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