diff --git a/app/src/main/java/com/hcy/tomeetu/MainActivity.java b/app/src/main/java/com/hcy/tomeetu/MainActivity.java
deleted file mode 100644
index cf7f250..0000000
--- a/app/src/main/java/com/hcy/tomeetu/MainActivity.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.hcy.tomeetu;
-
-import android.support.v7.app.AppCompatActivity;
-import android.os.Bundle;
-
-public class MainActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-    }
-}
diff --git a/app/src/main/java/com/hcy/tomeetu/MainActivity.kt b/app/src/main/java/com/hcy/tomeetu/MainActivity.kt
new file mode 100644
index 0000000..bf813e7
--- /dev/null
+++ b/app/src/main/java/com/hcy/tomeetu/MainActivity.kt
@@ -0,0 +1,19 @@
+package com.hcy.tomeetu
+
+import android.content.Intent
+import android.support.v7.app.AppCompatActivity
+import android.os.Bundle
+import kotlinx.android.synthetic.main.activity_main.*
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        bt_main_totest.setOnClickListener {
+            val intent = Intent(this@MainActivity, TestActivity::class.java)
+            startActivity(intent)
+        }
+
+    }
+}
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 57d7206..1fee4ac 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,18 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
+    android:gravity="center"
     android:layout_height="match_parent"
     tools:context="com.hcy.tomeetu.MainActivity">
 
-    <TextView
+    <Button
+        android:id="@+id/bt_main_totest"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:text="跳转"
+      />
 
-</android.support.constraint.ConstraintLayout>
+</LinearLayout>