给出xml布局文件和Java类
时间: 2023-10-08 07:06:31 浏览: 42
好的,下面是一个简单的实现,包括XML布局文件和Java类:
XML布局文件(alarm_layout.xml):
```
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设置闹钟时间" />
<TimePicker
android:id="@+id/timePicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/startButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="开始闹钟" />
</LinearLayout>
```
Java类(AlarmActivity.java):
```
public class AlarmActivity extends AppCompatActivity {
private PendingIntent pendingIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.alarm_layout);
// 获取TimePicker对象
TimePicker timePicker = (TimePicker) findViewById(R.id.timePicker);
// 获取Calendar对象
final Calendar calendar = Calendar.getInstance();
// 获取AlarmManager对象
final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// 获取Button对象
Button startButton = (Button) findViewById(R.id.startButton);
// 设置Button的点击事件
startButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 设置闹钟时间
calendar.set(Calendar.HOUR_OF_DAY, timePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, timePicker.getCurrentMinute());
// 创建Intent对象
Intent intent = new Intent(AlarmActivity.this, AlarmBroadcastReceiver.class);
// 创建PendingIntent对象
pendingIntent = PendingIntent.getBroadcast(AlarmActivity.this, 0, intent, 0);
// 设置闹钟
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);
// 显示Toast提示
Toast.makeText(AlarmActivity.this, "闹钟已设置", Toast.LENGTH_SHORT).show();
}
});
}
}
```
其中,AlarmBroadcastReceiver类是一个继承自BroadcastReceiver的类,用于在闹钟触发时播放铃声。您可以在该类中使用MediaPlayer类播放铃声。