Android studio 职工考勤系统代码

以下是一个简单的Android Studio职工考勤系统的代码示例，包括了登录界面、考勤打卡界面、考勤记录查询界面等基本功能。

XML布局文件：

登录界面：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <EditText
        android:id="@+id/username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/username_hint"
        android:inputType="text" />

    <EditText
        android:id="@+id/password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/password_hint"
        android:inputType="textPassword" />

    <Button
        android:id="@+id/login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/login_button" />

</LinearLayout>

考勤打卡界面：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/greeting"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/greeting"
        android:textSize="20sp"
        android:layout_marginTop="100dp"
        android:gravity="center" />

    <Button
        android:id="@+id/check_in_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/check_in_button"
        android:layout_below="@id/greeting"
        android:layout_marginTop="50dp"
        android:layout_marginLeft="50dp"
        android:layout_marginRight="50dp"
        android:background="@color/colorPrimary"
        android:textColor="@android:color/white" />

    <Button
        android:id="@+id/check_out_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/check_out_button"
        android:layout_below="@id/check_in_button"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="50dp"
        android:layout_marginRight="50dp"
        android:background="@color/colorPrimary"
        android:textColor="@android:color/white" />

</RelativeLayout>

考勤记录查询界面：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/title"
        android:textSize="20sp"
        android:gravity="center"
        android:layout_marginTop="50dp"
        android:layout_marginBottom="20dp" />

    <ListView
        android:id="@+id/attendance_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

Java代码：

登录界面：

public class LoginActivity extends AppCompatActivity {

    private EditText mUsernameEditText;
    private EditText mPasswordEditText;
    private Button mLoginButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        mUsernameEditText = findViewById(R.id.username);
        mPasswordEditText = findViewById(R.id.password);
        mLoginButton = findViewById(R.id.login);

        mLoginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String username = mUsernameEditText.getText().toString();
                String password = mPasswordEditText.getText().toString();

                if (TextUtils.isEmpty(username)) {
                    mUsernameEditText.setError(getString(R.string.username_error));
                    return;
                }

                if (TextUtils.isEmpty(password)) {
                    mPasswordEditText.setError(getString(R.string.password_error));
                    return;
                }

                // TODO: Add login logic here
            }
        });
    }
}

考勤打卡界面：

public class CheckInActivity extends AppCompatActivity {

    private TextView mGreetingTextView;
    private Button mCheckInButton;
    private Button mCheckOutButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_check_in);

        mGreetingTextView = findViewById(R.id.greeting);
        mCheckInButton = findViewById(R.id.check_in_button);
        mCheckOutButton = findViewById(R.id.check_out_button);

        // TODO: Add greeting message based on current time

        mCheckInButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO: Add check-in logic here
            }
        });

        mCheckOutButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO: Add check-out logic here
            }
        });
    }
}

考勤记录查询界面：

public class AttendanceActivity extends AppCompatActivity {

    private TextView mTitleTextView;
    private ListView mAttendanceListView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_attendance);

        mTitleTextView = findViewById(R.id.title);
        mAttendanceListView = findViewById(R.id.attendance_list);

        // TODO: Load attendance records from database and display them in the list view
    }
}

在上面的Java代码中，我们可以看到一些基本的逻辑，例如在登录界面中检查用户名和密码是否为空、在考勤打卡界面中根据当前时间显示不同的问候语、在考勤记录查询界面中加载考勤记录并显示在列表视图中。当然，这些代码只是一个简单的示例，实际的职工考勤系统可能需要更多的功能和逻辑。

希望这个简单的代码示例对您有所帮助！