diff --git a/.idea/modules.xml b/.idea/modules.xml
index 3f14239..0ddf669 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -3,9 +3,10 @@
   <component name="ProjectModuleManager">
     <modules>
       <module fileurl="file://D:\Project\ble-android-demo\BTDemo.iml" filepath="D:\Project\ble-android-demo\BTDemo.iml" />
-      <module fileurl="file://$PROJECT_DIR$/BTDemo.iml" filepath="$PROJECT_DIR$/BTDemo.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
+      <module fileurl="file://D:\Project\ble-android-demo\app\app.iml" filepath="D:\Project\ble-android-demo\app\app.iml" />
       <module fileurl="file://$PROJECT_DIR$/ble-android-demo.iml" filepath="$PROJECT_DIR$/ble-android-demo.iml" />
+      <module fileurl="file://D:\Project\ble-android-demo\ble-android-demo.iml" filepath="D:\Project\ble-android-demo\ble-android-demo.iml" />
     </modules>
   </component>
 </project>
\ No newline at end of file
diff --git a/app/src/main/java/xyz/mtfos/btdemo/PrinterBle.java b/app/src/main/java/xyz/mtfos/btdemo/PrinterBle.java
index b3bae0e..b74826c 100644
--- a/app/src/main/java/xyz/mtfos/btdemo/PrinterBle.java
+++ b/app/src/main/java/xyz/mtfos/btdemo/PrinterBle.java
@@ -59,6 +59,8 @@ public class PrinterBle {
     final public static int ALIGN_RIGHT = 0x02;
 
     private int lastAlign = 0x00;
+    private int lastWidth = 1;
+    private int lastHeigh = 1;
 
     // 藍芽狀態
     public int mState = 0x00;
@@ -412,20 +414,29 @@ public class PrinterBle {
 
     public PrinterBle setSize(int w, int h) {
         if (w < 1 || h < 1 || w > 3 || h > 3) return this;
+        lastWidth = w;
+        lastHeigh = h;
         return addText(String.format("__&s%d,%d__", w, h));
     }
 
     public PrinterBle addHR() {
         int align = this.lastAlign;
+        int w = lastWidth;
+        int h = lastHeigh;
         setAlign(ALIGN_CENTER);
+        resetSize();
         textNewLine();
         addTextln(StringUtils.repeat('-', 20));
         setAlign(align);
+        setSize(w, h);
         return this;
     }
 
-    public void resetSize() {
+    public PrinterBle resetSize() {
+        lastHeigh = 1;
+        lastWidth = 1;
         setSize(1, 1);
+        return this;
     }
 
     public ArrayList<String> getDataQueue() {
diff --git a/build.gradle b/build.gradle
index 487c656..d4f002d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-beta2'
+        classpath 'com.android.tools.build:gradle:3.0.0-beta4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 3da01cd..1b7e0ca 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Aug 07 11:04:39 CST 2017
+#Sun Sep 03 09:43:10 CST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-rc-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip