diff --git a/app/src/main/java/xyz/mtfos/btdemo/MainActivity.kt b/app/src/main/java/xyz/mtfos/btdemo/MainActivity.kt
index f4fafd1..3461ddf 100644
--- a/app/src/main/java/xyz/mtfos/btdemo/MainActivity.kt
+++ b/app/src/main/java/xyz/mtfos/btdemo/MainActivity.kt
@@ -38,15 +38,15 @@ class MainActivity : Activity() {
 
         ble?.setOnStateChangeListener {
             System.out.println("Now State is >>>> " + it)
-            if(it == PrinterBle.CONNECTING) {
+            if (it == PrinterBle.CONNECTING) {
                 disconnectBtn.isEnabled = true
             }
-            if(it == PrinterBle.CONNECTED) {
+            if (it == PrinterBle.CONNECTED) {
                 btn.isEnabled = true
                 connectBtn.isEnabled = false
                 disconnectBtn.isEnabled = true
             }
-            if(it == PrinterBle.DISCONNECTED) {
+            if (it == PrinterBle.DISCONNECTED) {
                 btn.isEnabled = false
                 connectBtn.isEnabled = true
                 disconnectBtn.isEnabled = false
@@ -65,7 +65,7 @@ class MainActivity : Activity() {
         btn.setOnClickListener {
             val txt: String = intxt.text.toString()
             ble?.setAlign(PrinterBle.ALIGN_CENTER)?.addText(txt)
-    ble?.sendQueue()
+            ble?.sendQueue()
         }
 
         connectBtn.setOnClickListener {
@@ -86,16 +86,16 @@ class MainActivity : Activity() {
     }
 
     fun scanConnect() {
-        if(ble?.init()!!){
+        if (ble?.init()!!) {
             ble?.startScan()
         }
     }
 
     fun disconnect() {
-        if(ble?.mState!! == PrinterBle.SCANNING) {
+        if (ble?.mState!! == PrinterBle.SCANNING) {
             ble?.stopScan()
         }
-        if(ble?.mState!! == PrinterBle.CONNECTED) {
+        if (ble?.mState!! == PrinterBle.CONNECTED) {
             ble?.disconnect()
         }
     }