请帮我写完整的可以运行的代码。使用一个Timepicker控件和一个imagebutton实现闹钟功能。

好的，以下是可以运行的代码：

XML布局文件：

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

    <TimePicker
        android:id="@+id/timePicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true" />

    <ImageButton
        android:id="@+id/imageButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/timePicker"
        android:layout_centerHorizontal="true"
        android:src="@drawable/ic_alarm"
        android:contentDescription="@string/alarm_button_description"/>

</RelativeLayout>

Java代码：

public class MainActivity extends AppCompatActivity {

    private TimePicker timePicker;
    private ImageButton imageButton;

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

        timePicker = findViewById(R.id.timePicker);
        imageButton = findViewById(R.id.imageButton);

        imageButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int hour = timePicker.getCurrentHour();
                int minute = timePicker.getCurrentMinute();

                Calendar calendar = Calendar.getInstance();
                calendar.set(Calendar.HOUR_OF_DAY, hour);
                calendar.set(Calendar.MINUTE, minute);
                calendar.set(Calendar.SECOND, );

                Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);
                PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, , intent, );

                AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
                alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

                Toast.makeText(MainActivity.this, "Alarm set for " + hour + ":" + minute, Toast.LENGTH_SHORT).show();
            }
        });
    }
}

请注意，这只是一个简单的示例代码，您可以根据您的需求进行修改和扩展。