要實現(xiàn)備忘錄鬧鐘功能,可以使用Android的AlarmManager和NotificationManager兩個類。
<uses-permission android:name="android.permission.SET_ALARM" />
<uses-permission android:name="android.permission.VIBRATE" />
創(chuàng)建一個新的Activity或者Fragment來處理備忘錄信息的編輯和保存。
在該Activity或者Fragment中,使用DatePicker和TimePicker來選擇日期和時間。
當用戶選擇完日期和時間后,使用AlarmManager來設置鬧鐘。以下是一個設置鬧鐘的示例代碼:
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(getApplicationContext(), AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);
// 設置鬧鐘時間
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.YEAR, year);
calendar.set(Calendar.MONTH, month);
calendar.set(Calendar.DAY_OF_MONTH, day);
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, 0);
// 設置鬧鐘
alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// 創(chuàng)建通知
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("備忘錄")
.setContentText("提醒內容")
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setAutoCancel(true);
// 發(fā)送通知
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(0, builder.build());
}
}
<application>
標簽中添加以下代碼:<receiver android:name=".AlarmReceiver" />
這樣就實現(xiàn)了備忘錄鬧鐘功能。用戶選擇日期和時間后,鬧鐘將會在指定的時間觸發(fā),創(chuàng)建一個通知提醒用戶。