diff --git a/students/com1714080901121/app/src/main/java/edu/hzuapps/androidlabs/com1714080901121/Com1714080901121FirstActivity.java b/students/com1714080901121/app/src/main/java/edu/hzuapps/androidlabs/com1714080901121/Com1714080901121FirstActivity.java
new file mode 100644
index 000000000..e9aa9c7d4
--- /dev/null
+++ b/students/com1714080901121/app/src/main/java/edu/hzuapps/androidlabs/com1714080901121/Com1714080901121FirstActivity.java
@@ -0,0 +1,76 @@
+package edu.hzuapps.androidlabs.com1714080901121signinapp;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+public class Com1714080901121FirstActivity extends Activity implements OnClickListener {
+    private EditText et_info;
+    private Button btn_save;
+    private Button btn_read;
+
+    @SuppressLint("CutPasteId")
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.com1714080901121homepage);
+        et_info = (EditText) findViewById(R.id.et_info);
+        btn_save = (Button) findViewById(R.id.btn_save);
+        btn_read = (Button) findViewById(R.id.btn_read);
+        btn_save.setOnClickListener(new ButtonListener());
+        btn_read.setOnClickListener(new ButtonListener());
+    }
+
+    // ����Button��ť�ĵ���¼�
+    private class ButtonListener implements OnClickListener {
+        public void onClick(View v) {
+            switch (v.getId()) {
+                case R.id.btn_save:
+                    String saveinfo = et_info.getText().toString().trim();
+                    FileOutputStream fos;
+                    try {
+                        fos = openFileOutput("data.txt", Context.MODE_APPEND);
+                        fos.write(saveinfo.getBytes());
+                        fos.close();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    Toast.makeText(Com1714080901121FirstActivity.this, "数据保存成功", 0).show();
+                    break;
+                case R.id.btn_read:
+                    String content = "";
+                    try {
+                        FileInputStream fis = openFileInput("data.txt");
+                        byte[] buffer = new byte[fis.available()];
+                        fis.read(buffer);
+                        content = new String(buffer);
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    Toast.makeText(Com1714080901121FirstActivity.this, "保存的数据是" + content, 0)
+                            .show();
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
+    public void read(View view) {
+
+    }
+
+    @Override
+    public void onClick(View v) {
+        // TODO Auto-generated method stub
+
+    }
+}
\ No newline at end of file
diff --git a/students/com1714080901121/app/src/main/res/layout/com1714080901121homepage.xml b/students/com1714080901121/app/src/main/res/layout/com1714080901121homepage.xml
new file mode 100644
index 000000000..88b0aa3f2
--- /dev/null
+++ b/students/com1714080901121/app/src/main/res/layout/com1714080901121homepage.xml
@@ -0,0 +1,70 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/green"
+    tools:context=".Com1714080901121FirstActivity" >
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="198dp"
+        android:layout_height="38dp"
+        android:layout_alignParentTop="true"
+        android:layout_marginLeft="100dp"
+        android:layout_marginTop="103dp"
+        android:text="运动健身打卡系统"
+        android:textColor="#000000"
+        android:textSize="24dp" />
+
+    <TextView
+        android:id="@+id/textView1"
+        android:layout_width="288dp"
+        android:layout_height="102dp"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true"
+        android:layout_marginLeft="80dp"
+        android:layout_marginTop="167dp"
+        android:text="请输入您要打卡的时间："
+        android:textColor="#000000"
+        android:textSize="30dp" />
+
+    <Button
+        android:id="@+id/btn_read"
+        android:layout_width="143dp"
+        android:layout_height="68dp"
+        android:layout_below="@+id/et_info"
+        android:layout_alignRight="@+id/et_info"
+        android:layout_marginTop="77dp"
+        android:layout_marginRight="17dp"
+        android:background="@drawable/blue"
+        android:onClick="read"
+        android:text="读取信息"
+        android:textColor="#ffffff"
+        android:textSize="30dp" />
+
+    <Button
+        android:id="@+id/btn_save"
+        android:layout_width="wrap_content"
+        android:layout_height="67dp"
+        android:layout_below="@+id/et_info"
+        android:layout_alignParentLeft="true"
+        android:layout_marginLeft="219dp"
+        android:layout_marginTop="76dp"
+        android:background="@drawable/blue"
+        android:text="保存信息"
+        android:textColor="#ffffff"
+        android:textSize="30dp" />
+
+    <EditText
+        android:id="@+id/et_info"
+        android:layout_width="146dp"
+        android:layout_height="47dp"
+        android:layout_below="@+id/textView1"
+        android:layout_alignParentLeft="true"
+        android:layout_marginLeft="78dp"
+        android:layout_marginTop="-49dp"
+        android:ems="10">
+
+        <requestFocus />
+    </EditText>
+</RelativeLayout>
\ No newline at end of file