我怎样才能制作这个闹钟应用程序。能够在一天中的任何时间和准确的时间设置闹钟？

Question

我是 android 开发的新手，对 java 知之甚少，我在互联网上看到了这个闹钟应用程序教程。应用程序有问题。它不能将时间设置在 phone 当前时间之前，并且不会在确切时间开始。如何制作此应用程序，使其可以在 24 小时内并在准确的时间设置闹钟？

AlarmActivity.java

package com.javapapers.androidalarmclock;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.ToggleButton;

import java.util.Calendar;

public class AlarmActivity extends Activity {

AlarmManager alarmManager;
private PendingIntent pendingIntent;
private TimePicker alarmTimePicker;
private static AlarmActivity inst;
private TextView alarmTextView;

public static AlarmActivity instance() {
    return inst;
}

@Override
public void onStart() {
    super.onStart();
    inst = this;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);
    alarmTimePicker = (TimePicker) findViewById(R.id.alarmTimePicker);
    alarmTextView = (TextView) findViewById(R.id.alarmText);
    ToggleButton alarmToggle = (ToggleButton)     findViewById(R.id.alarmToggle);
    alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
}

public void onToggleClicked(View view) {
    if (((ToggleButton) view).isChecked()) {
        Log.d("MyActivity", "Alarm On");
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY,   alarmTimePicker.getCurrentHour());
        calendar.set(Calendar.MINUTE, alarmTimePicker.getCurrentMinute());
        Intent myIntent = new Intent(AlarmActivity.this, AlarmReceiver.class);
        pendingIntent = PendingIntent.getBroadcast(AlarmActivity.this, 0, myIntent, 0);
        alarmManager.set(AlarmManager.RTC, calendar.getTimeInMillis(), pendingIntent);
    } else {
        alarmManager.cancel(pendingIntent);
        setAlarmText("");
        Log.d("MyActivity", "Alarm Off");
    }
}

public void setAlarmText(String alarmText) {
    alarmTextView.setText(alarmText);
}
}

AlarmReceiver.java

package com.javapapers.androidalarmclock;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.support.v4.content.WakefulBroadcastReceiver;

public class AlarmReceiver extends WakefulBroadcastReceiver {

@Override
public void onReceive(final Context context, Intent intent) {
    //this will update the UI with message
    AlarmActivity inst = AlarmActivity.instance();
    inst.setAlarmText("Alarm! Wake up! Wake up!");

    //this will sound the alarm tone
    //this will sound the alarm once, if you wish to
    //raise alarm in loop continuously then use MediaPlayer and setLooping(true)
    Uri alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
    if (alarmUri == null) {
        alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    }
    Ringtone ringtone = RingtoneManager.getRingtone(context, alarmUri);
    ringtone.play();

    //this will send a notification message
    ComponentName comp = new ComponentName(context.getPackageName(),
            AlarmService.class.getName());
    startWakefulService(context, (intent.setComponent(comp)));
    setResultCode(Activity.RESULT_OK);
}
}

AlarmService.java

package com.javapapers.androidalarmclock;

import android.app.IntentService;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

public class AlarmService extends IntentService {
private NotificationManager alarmNotificationManager;

public AlarmService() {
    super("AlarmService");
}

@Override
public void onHandleIntent(Intent intent) {
    sendNotification("Wake Up! Wake Up!");
}

private void sendNotification(String msg) {
    Log.d("AlarmService", "Preparing to send notification...: " + msg);
    alarmNotificationManager = (NotificationManager) this
            .getSystemService(Context.NOTIFICATION_SERVICE);

    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, AlarmActivity.class), 0);

    NotificationCompat.Builder alamNotificationBuilder = new   NotificationCompat.Builder(
            this).setContentTitle("Alarm").setSmallIcon(R.drawable.ic_launcher)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
            .setContentText(msg);


    alamNotificationBuilder.setContentIntent(contentIntent);
    alarmNotificationManager.notify(1, alamNotificationBuilder.build());
    Log.d("AlarmService", "Notification sent.");
}
}

请帮忙！我很绝望。

Answer 1

如果你想有24小时的跨度，你还需要设置天，这就是为什么你不能把时间设置在phone当前时间之前。

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, alarmTimePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, alarmTimePicker.getCurrentMinute());
if(calendar.getTimeInMillis() < System.currentTimeMillis())
       calendar.add(Calendar.DAY, 1);

Answer 2

我只想分享我发现的关于闹钟延迟问题的答案

我怎样才能制作这个闹钟应用程序。能够在一天中的任何时间和准确的时间设置闹钟？

How can I make this Alarm Clock app. to be able to set alarm at any time of the day and exactly at that time?

java

android

eclipse

android-alarms