diff --git a/.gitignore b/.gitignore
index f10c2379f8fc29dd8ee6aa44e40cac3fa1345c9a..97dade09e4bc5c4796a079b891c4d2e25992a785 100644
--- a/.gitignore
+++ b/.gitignore
@@ -88,4 +88,4 @@ metal/images/
 *.a
 metal/paddle-mobile/paddle-mobile/CPU/libpaddle-mobile.a
 *.xcuserdatad/
-xcuserdata/
+*/xcuserdata/
diff --git a/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/paddle-mobile-demo.xcscheme b/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/paddle-mobile-demo.xcscheme
deleted file mode 100644
index 46c65bd36a9ab7027b1cb7a81533dcd553ccb62e..0000000000000000000000000000000000000000
--- a/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/paddle-mobile-demo.xcscheme
+++ /dev/null
@@ -1,91 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0940"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "FC039B7D20E11C550081E9F8"
-               BuildableName = "paddle-mobile-demo.app"
-               BlueprintName = "paddle-mobile-demo"
-               ReferencedContainer = "container:paddle-mobile-demo.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "FC039B7D20E11C550081E9F8"
-            BuildableName = "paddle-mobile-demo.app"
-            BlueprintName = "paddle-mobile-demo"
-            ReferencedContainer = "container:paddle-mobile-demo.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "FC039B7D20E11C550081E9F8"
-            BuildableName = "paddle-mobile-demo.app"
-            BlueprintName = "paddle-mobile-demo"
-            ReferencedContainer = "container:paddle-mobile-demo.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "FC039B7D20E11C550081E9F8"
-            BuildableName = "paddle-mobile-demo.app"
-            BlueprintName = "paddle-mobile-demo"
-            ReferencedContainer = "container:paddle-mobile-demo.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
diff --git a/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/xcschememanagement.plist b/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index 3ac3272f7fe5e82e15488422c949e3df19853f90..0000000000000000000000000000000000000000
--- a/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>paddle-mobile-demo.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>1</integer>
-		</dict>
-	</dict>
-	<key>SuppressBuildableAutocreation</key>
-	<dict>
-		<key>FC039B7D20E11C550081E9F8</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-	</dict>
-</dict>
-</plist>
diff --git a/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/xiaohaichun.xcuserdatad/xcschemes/xcschememanagement.plist b/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/xiaohaichun.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index 5fccf469f28075666d7fa1e766623014b4f856ff..0000000000000000000000000000000000000000
--- a/metal/paddle-mobile-demo/paddle-mobile-demo.xcodeproj/xcuserdata/xiaohaichun.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>paddle-mobile-demo.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>6</integer>
-		</dict>
-	</dict>
-</dict>
-</plist>
diff --git a/metal/paddle-mobile-unit-test/paddle-mobile-unit-test.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/xcschememanagement.plist b/metal/paddle-mobile-unit-test/paddle-mobile-unit-test.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index 994fb8e4886aba91298c168a1b06888d8825b655..0000000000000000000000000000000000000000
--- a/metal/paddle-mobile-unit-test/paddle-mobile-unit-test.xcodeproj/xcuserdata/liuruilong.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>paddle-mobile-unit-test.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>6</integer>
-		</dict>
-	</dict>
-</dict>
-</plist>
diff --git a/metal/paddle-mobile-unit-test/paddle-mobile-unit-test.xcodeproj/xcuserdata/xiaohaichun.xcuserdatad/xcschemes/xcschememanagement.plist b/metal/paddle-mobile-unit-test/paddle-mobile-unit-test.xcodeproj/xcuserdata/xiaohaichun.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index c32186342198f0bb9e7a074d2aa058b971378d19..0000000000000000000000000000000000000000
--- a/metal/paddle-mobile-unit-test/paddle-mobile-unit-test.xcodeproj/xcuserdata/xiaohaichun.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>paddle-mobile-unit-test.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>5</integer>
-		</dict>
-	</dict>
-</dict>
-</plist>