diff --git a/vulkan/Application.cpp b/vulkan/Application.cpp
index 0d9cb4f..b46554d 100644
--- a/vulkan/Application.cpp
+++ b/vulkan/Application.cpp
@@ -1,9 +1,11 @@
 #include "Application.h"
-#ifndef _WIN32
+
+#ifdef _WIN32
 
 #else
 	#include <game-activity/native_app_glue/android_native_app_glue.h>
 	#include <game-activity/GameActivity.h>
+    #include <vulkan/vulkan_android.h>
 	#include "../app/src/main/cpp/AndroidOut.h"
 #endif
 
@@ -78,9 +80,9 @@ void Application::run()
 	cleanup();
 }
 
-#ifndef _WIN32
+#ifdef _WIN32
 #else
-	extern android_app* g_android_app
+	extern android_app* g_android_app;
 #endif
 
 void Application::createSurface() {
@@ -89,10 +91,6 @@ void Application::createSurface() {
 		throw std::runtime_error("failed to create window surface!");
 	}
 #else
-	if (instance == VK_NULL_HANDLE || !g_android_app)
-	{
-		return VK_NULL_HANDLE;
-	}
 
 	VkSurfaceKHR surface{};
 
@@ -388,11 +386,32 @@ void Application::createLogicalDevice() {
 	vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
 }
 
+//vk::Extent2D choose_extent(vk::Extent2D        request_extent,
+//	const vk::Extent2D& min_image_extent,
+//	const vk::Extent2D& max_image_extent,
+//	const vk::Extent2D& current_extent)
+//{
+//	if (current_extent.width == 0xFFFFFFFF)
+//	{
+//		return request_extent;
+//	}
+//
+//	if (request_extent.width < 1 || request_extent.height < 1)
+//	{
+//		return current_extent;
+//	}
+//
+//	request_extent.width = clamp(request_extent.width, min_image_extent.width, max_image_extent.width);
+//	request_extent.height = clamp(request_extent.height, min_image_extent.height, max_image_extent.height);
+//
+//	return request_extent;
+//}
+
 void Application::createSwapChain() {
 	// 选择交换链格式、颜色空间和分辨率
 	VkSurfaceFormatKHR surfaceFormat = { VK_FORMAT_B8G8R8A8_SRGB, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR };
 	VkPresentModeKHR presentMode = VK_PRESENT_MODE_FIFO_KHR;
-	VkExtent2D extent = { kWidth, kHeight };
+	VkExtent2D extent = { 0, 0 };
 
 	// 创建交换链
 	VkSwapchainCreateInfoKHR createInfo{};
@@ -401,7 +420,7 @@ void Application::createSwapChain() {
 	createInfo.minImageCount = 2; // 双缓冲
 	createInfo.imageFormat = surfaceFormat.format;
 	createInfo.imageColorSpace = surfaceFormat.colorSpace;
-	createInfo.imageExtent = extent;
+	//createInfo.imageExtent = choose_extent(extent, surface_capabilities.minImageExtent, surface_capabilities.maxImageExtent, surface_capabilities.currentExtent);;
 	createInfo.imageArrayLayers = 1;
 	createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 
diff --git a/vulkan/Application.h b/vulkan/Application.h
index 1993c9a..547d4d0 100644
--- a/vulkan/Application.h
+++ b/vulkan/Application.h
@@ -16,6 +16,18 @@
 #include <vector>
 #include <optional>
 #include <set>
+#include <assert.h>
+#include <vulkan/vulkan_structs.hpp>
+
+#define VK_CHECK(x)                                                                    \
+	do                                                                                 \
+	{                                                                                  \
+		VkResult err = x;                                                              \
+		if (err)                                                                       \
+		{                                                                              \
+			assert(false);                                                              \
+		}                                                                              \
+	} while (0)
 
 struct QueueFamilyIndices {
     std::optional<uint32_t> graphicsFamily;
@@ -26,6 +38,7 @@ struct QueueFamilyIndices {
     }
 };
 
+
 class Application
 {
 private: