diff --git a/app/src/main/java/com/stardust/scriptdroid/ui/floating/FloatyWindowManger.java b/app/src/main/java/com/stardust/scriptdroid/ui/floating/FloatyWindowManger.java
index 9d71fc1a..ee0b66e4 100644
--- a/app/src/main/java/com/stardust/scriptdroid/ui/floating/FloatyWindowManger.java
+++ b/app/src/main/java/com/stardust/scriptdroid/ui/floating/FloatyWindowManger.java
@@ -4,6 +4,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.widget.Toast;
 
+import com.stardust.autojs.util.FloatingPermission;
 import com.stardust.enhancedfloaty.FloatyService;
 import com.stardust.enhancedfloaty.FloatyWindow;
 import com.stardust.enhancedfloaty.util.FloatingWindowPermissionUtil;
@@ -16,6 +17,8 @@ import java.lang.ref.WeakReference;
 
 import ezy.assist.compat.SettingsCompat;
 
+import static com.stardust.autojs.util.FloatingPermission.manageDrawOverlays;
+
 /**
  * Created by Stardust on 2017/9/30.
  */
@@ -26,11 +29,7 @@ public class FloatyWindowManger {
 
     public static void addWindow(Context context, FloatyWindow window) {
         context.startService(new Intent(context, FloatyService.class));
-        if (!SettingsCompat.canDrawOverlays(context)) {
-            Toast.makeText(context, R.string.text_no_floating_window_permission, Toast.LENGTH_SHORT).show();
-            manageDrawOverlays(context);
-            return;
-        }
+        FloatingPermission.ensurePermissionGranted(context);
         try {
             FloatyService.addWindow(window);
             // SecurityException: https://github.com/hyb1996-guest/AutoJsIssueReport/issues/4781
@@ -43,14 +42,6 @@ public class FloatyWindowManger {
     }
 
 
-    public static void manageDrawOverlays(Context context) {
-        try {
-            SettingsCompat.manageDrawOverlays(context);
-        } catch (Exception ex) {
-            FloatingWindowPermissionUtil.goToAppDetailSettings(context, context.getPackageName());
-        }
-    }
-
     public static void closeWindow(FloatyWindow window) {
         window.close();
     }
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/Floaty.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/Floaty.java
index c4e54e7f..d4314752 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/Floaty.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/Floaty.java
@@ -5,6 +5,7 @@ import android.content.Intent;
 import android.os.Looper;
 import android.view.ContextThemeWrapper;
 import android.view.View;
+import android.widget.Toast;
 
 import com.stardust.autojs.R;
 import com.stardust.autojs.core.floaty.FloatyWindow;
@@ -12,6 +13,7 @@ import com.stardust.autojs.core.ui.JsLayoutInflater;
 import com.stardust.autojs.core.ui.JsViewHelper;
 import com.stardust.autojs.runtime.ScriptRuntime;
 import com.stardust.autojs.runtime.exception.ScriptInterruptedException;
+import com.stardust.autojs.util.FloatingPermission;
 import com.stardust.concurrent.VolatileDispose;
 import com.stardust.enhancedfloaty.FloatyService;
 import com.stardust.util.UiHandler;
@@ -20,6 +22,8 @@ import com.stardust.util.ViewUtil;
 import java.util.Iterator;
 import java.util.concurrent.CopyOnWriteArraySet;
 
+import ezy.assist.compat.SettingsCompat;
+
 /**
  * Created by Stardust on 2017/12/5.
  */
@@ -44,6 +48,11 @@ public class Floaty {
     }
 
     public JsFloatyWindow window(View view) {
+        try {
+            FloatingPermission.waitForPermissionGranted(view.getContext());
+        } catch (InterruptedException e) {
+            throw new ScriptInterruptedException();
+        }
         JsFloatyWindow window = new JsFloatyWindow(view);
         mWindows.add(window);
         return window;
diff --git a/autojs/src/main/java/com/stardust/autojs/util/FloatingPermission.java b/autojs/src/main/java/com/stardust/autojs/util/FloatingPermission.java
new file mode 100644
index 00000000..7b5abcda
--- /dev/null
+++ b/autojs/src/main/java/com/stardust/autojs/util/FloatingPermission.java
@@ -0,0 +1,61 @@
+package com.stardust.autojs.util;
+
+import android.content.Context;
+import android.os.Handler;
+import android.os.Looper;
+import android.widget.Toast;
+
+import com.stardust.R;
+import com.stardust.autojs.runtime.exception.ScriptInterruptedException;
+import com.stardust.enhancedfloaty.util.FloatingWindowPermissionUtil;
+import com.stardust.lang.ThreadCompat;
+
+import ezy.assist.compat.SettingsCompat;
+
+/**
+ * Created by Stardust on 2018/1/30.
+ */
+
+public class FloatingPermission {
+
+
+    public static void ensurePermissionGranted(Context context) {
+        if (!SettingsCompat.canDrawOverlays(context)) {
+            Toast.makeText(context, R.string.text_no_floating_window_permission, Toast.LENGTH_SHORT).show();
+            manageDrawOverlays(context);
+            return;
+        }
+    }
+
+    public static void waitForPermissionGranted(Context context) throws InterruptedException {
+        if (SettingsCompat.canDrawOverlays(context)) {
+            return;
+        }
+        Runnable r = () -> {
+            manageDrawOverlays(context);
+            Toast.makeText(context, R.string.text_no_floating_window_permission, Toast.LENGTH_SHORT).show();
+        };
+        if (Looper.myLooper() != Looper.getMainLooper()) {
+            new Handler(Looper.getMainLooper()).post(r);
+        } else {
+            r.run();
+        }
+        while (true) {
+            if (SettingsCompat.canDrawOverlays(context))
+                return;
+            Thread.sleep(200);
+        }
+
+    }
+
+
+    public static void manageDrawOverlays(Context context) {
+        try {
+            SettingsCompat.manageDrawOverlays(context);
+        } catch (Exception ex) {
+            FloatingWindowPermissionUtil.goToAppDetailSettings(context, context.getPackageName());
+        }
+    }
+
+
+}
diff --git a/common/src/main/res/values/strings.xml b/common/src/main/res/values/strings.xml
index 9e44af55..9c91ca5d 100644
--- a/common/src/main/res/values/strings.xml
+++ b/common/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">common</string>
+    <string name="text_no_floating_window_permission">没有悬浮窗权限</string>
 </resources>