diff --git a/app/src/main/java/com/kooritea/fcmfix/MainActivity.java b/app/src/main/java/com/kooritea/fcmfix/MainActivity.java
index 279f5b7..e00c0ff 100644
--- a/app/src/main/java/com/kooritea/fcmfix/MainActivity.java
+++ b/app/src/main/java/com/kooritea/fcmfix/MainActivity.java
@@ -161,7 +161,15 @@ public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3)
                 appListAdapter.notifyDataSetChanged();
             }
         });
+        this.initHeartbeatInterval();
+    }
 
+    private void initHeartbeatInterval(){
+        if(this.sharedPreferences.getString("heartbeatInterval","").equals("")){
+            this.sharedPreferencesEditor.putString("heartbeatInterval","117000");
+            this.sharedPreferencesEditor.commit();
+            this.setWorldReadable();
+        }
     }
 
     private void addAppInAllowList(String packageName){
diff --git a/app/src/main/java/com/kooritea/fcmfix/XposedMain.java b/app/src/main/java/com/kooritea/fcmfix/XposedMain.java
index bc19f94..c569605 100644
--- a/app/src/main/java/com/kooritea/fcmfix/XposedMain.java
+++ b/app/src/main/java/com/kooritea/fcmfix/XposedMain.java
@@ -11,7 +11,7 @@ public class XposedMain implements IXposedHookLoadPackage {
 
     public void handleLoadPackage(final XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {
         if(loadPackageParam.packageName.equals("android")){
-            XposedBridge.log("[fcmfix] com.android.server.am.ActivityManagerService");
+            XposedBridge.log("[fcmfix] start hook com.android.server.am.ActivityManagerService");
             new BroadcastFix(loadPackageParam);
         }
         if(loadPackageParam.packageName.equals("com.google.android.gms")){
diff --git a/app/src/main/java/com/kooritea/fcmfix/xposed/ReconnectManagerFix.java b/app/src/main/java/com/kooritea/fcmfix/xposed/ReconnectManagerFix.java
index 1ee42af..c35a3d8 100644
--- a/app/src/main/java/com/kooritea/fcmfix/xposed/ReconnectManagerFix.java
+++ b/app/src/main/java/com/kooritea/fcmfix/xposed/ReconnectManagerFix.java
@@ -7,6 +7,7 @@
 import android.content.IntentFilter;
 import android.os.SystemClock;
 
+import java.util.HashSet;
 import java.util.Timer;
 import java.util.TimerTask;
 
@@ -30,7 +31,14 @@ protected void beforeHookedMethod(final MethodHookParam param) throws Throwable
                 // 修改心跳间隔
                 Intent intent = (Intent) XposedHelpers.getObjectField(param.thisObject,"e");
                 if("com.google.android.gms.gcm.HEARTBEAT_ALARM".equals(intent.getAction())){
-                    param.args[0] = 117000L;
+                    String heartbeatIntervalString = getXSharedPreferences().getString("heartbeatInterval","");
+                    if(heartbeatIntervalString.equals("")){
+                        heartbeatIntervalString = "117000";
+                    }
+                    long heartbeatInterval = new Long(heartbeatIntervalString).longValue();
+                    if(heartbeatInterval>5000L){
+                        param.args[0] = heartbeatInterval;
+                    }
                 }
             }
             @Override
diff --git a/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java b/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java
index 3e3bf1b..acc06f7 100644
--- a/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java
+++ b/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java
@@ -29,6 +29,11 @@ protected XSharedPreferences getXSharedPreferences(){
     protected void printLog(String text){
         Intent log = new Intent("com.kooritea.fcmfix.log");
         log.putExtra("text",text);
-        AndroidAppHelper.currentApplication().getApplicationContext().sendBroadcast(log);
+        try{
+            AndroidAppHelper.currentApplication().getApplicationContext().sendBroadcast(log);
+        }catch (Exception e){
+            e.printStackTrace();;
+        }
+
     }
 }
diff --git a/app/src/main/res/layout/app_item.xml b/app/src/main/res/layout/app_item.xml
index 08ec9f4..7a9b5d7 100644
--- a/app/src/main/res/layout/app_item.xml
+++ b/app/src/main/res/layout/app_item.xml
@@ -60,6 +60,8 @@
         android:layout_height="match_parent"
         android:gravity="center"
         android:focusable="false"
+        android:clickable="false"
+        android:focusableInTouchMode="false"
         android:layoutDirection="rtl" />
 
 </LinearLayout>
\ No newline at end of file