Question

如何在特定时间和日期开始闹钟，我使用TimePicker和DatePicker获得时间和日期。即使我可以在用户指定的时间启动闹钟，但我无法在用户指定的日期执行此操作。我怎样才能达到目标？我已经完成的代码。

package com.example.modifiedalarm;
import java.util.Calendar;
import java.util.Locale;
import java.util.TimeZone;
import android.os.Bundle;
import android.provider.AlarmClock;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.Toast;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.content.Intent;

public class MainActivity extends Activity {
    Button b1, b2, b3;
    Calendar c;
    String abcd;
    TextView ed, tv;
    int hr, min, year, month, date;
    int time = 0;
    int daa = 0;

private PendingIntent pendingIntent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        b1 = (Button) findViewById(R.id.button1);
        b2 = (Button) findViewById(R.id.button2);
        b3 = (Button) findViewById(R.id.button3);
        ed = (TextView) findViewById(R.id.settime);
        tv = (TextView) findViewById(R.id.gettime);
        c = Calendar.getInstance();

        hr = c.get(Calendar.HOUR_OF_DAY);
        min = c.get(Calendar.MINUTE);
        year = c.get(Calendar.YEAR);
        month = c.get(Calendar.MONTH);
        date = c.get(Calendar.DAY_OF_MONTH);

        b2.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent i = new Intent(AlarmClock.ACTION_SET_ALARM);
            i.putExtra(AlarmClock.EXTRA_MESSAGE, "New Alarm");
            i.putExtra(AlarmClock.EXTRA_HOUR, hr);
            i.putExtra(AlarmClock.EXTRA_MINUTES, min);
            startActivity(i);
}});                

        b1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                // showDialog(time);
                new TimePickerDialog(MainActivity.this, timeval, hr, min, true)
                        .show();

            }

        });

        b3.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub

                new DatePickerDialog(MainActivity.this, dateval, year, month,
                        date).show();
            }
        });
    }


    OnDateSetListener dateval = new OnDateSetListener() {

        @Override
        public void onDateSet(DatePicker view, int Year, int monthOfYear,
                int dayOfMonth) {
            // TODO Auto-generated method stub
            year = Year;
            month = monthOfYear;
            date = dayOfMonth;
            updatedate();
        }
    };


    OnTimeSetListener timeval = new OnTimeSetListener() {
        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // TODO Auto-generated method stub
            hr = hourOfDay;
            min = minute;
            updatetime();
        }
    };

    public void updatedate() {
        tv.setText(new StringBuilder().append(date).append("/").append(month).append("/").append(year));
        String og=tv.getText().toString();
        //int ogx=Integer.parseInt(og);
        Toast.makeText(MainActivity.this, "the date is "+og, Toast.LENGTH_LONG).show();
        datecompare();

}   private void datecompare() {

    }
private void updatetime() {
        // TODO Auto-generated method stub
        ed.setText(new StringBuilder().append(hr).append(":").append(min));
        String b=hr + ":" + min;
        }

}

例如：我想在05-04-2013 12:00 pm设置闹钟..我怎样才能实现？

Answer 1

以下是我从现在起5分钟后设置退出警报的方法

Calendar cal1 = Calendar.getInstance(); 
cal1.add(Calendar.MINUTE, 5);

您可以使用 Calendar 中提供的方法和字段对日期执行更多操作。例如：

Calendar cal = Calendar.getInstanc();
cal.set(Calendar.MONTH, JANUARY);

设置月份。检查该链接，您可以看到可以设置它的所有不同方法。使用set()设置字段（月，日等）并使用add()添加到字段中。这应该可以帮助你开始

修改

无论您在何处设置待定意图，只需使用已设置为值的变量

private void updatedate() { // TODO Auto-generated method stub c.set(Calendar.Month, month); // `c` is the `Calendar` instance you defined earlier. Now we are setting the month on that instance c.set(Calendar.DAY_OF_MONTH, date); }

然后点击Button

b2.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { long alarmTime = cal.getTimeInMillis(); // convert your calendar instance with the dates set to millis Intent i = new Intent(AlarmClock.ACTION_SET_ALARM); i.putExtra(AlarmClock.EXTRA_MESSAGE, "New Alarm"); i.putExtra("alarmTime", alarmTime); //"alarmTime" will be used to get the time to set the alarm in your AlarmClock class startActivity(i); }});

如果你已经在设定时间，那么你知道怎么做。希望这可以帮助你

Answer 2

    AlarmManager:
    Calendar cal = Calendar.getInstance();

            long when =0; 
            intent = new Intent(this, AlarmReceiver.class);
            intent.putExtra("eventName", eventName);
            intent.putExtra("eventDescription",eventDescription);

            // Get the AlarmManager service
            AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);

            RadioGroup rg=(RadioGroup)findViewById(R.id.Setting_rgRepeatMode);
            selectedRadio=(RadioButton)findViewById(rg.getCheckedRadioButtonId());
            long repeatTime=0;

                cal.set(mYear,mMonth,mDay,mHour,mMinute,0);
                intent.putExtra("Flag",true);
                PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
                when=cal.getTimeInMillis();
                am.set(AlarmManager.RTC_WAKEUP,when, pendingIntent);
                return;

    BroadCastReceiver:

        public class MyBroadcastReceiver extends BroadcastReceiver {
       try {
//Here you can write your logic
                    Toast.makeText(context,bundle.getString("eventName"), Toast.LENGTH_SHORT).show();

            NotificationManager notificationManager =(NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
            int icon = R.drawable.event;
            CharSequence notiText = "Event Notification";
            long time = System.currentTimeMillis();
            @SuppressWarnings("deprecation")
            Notification notification = new Notification(icon, notiText,time);
            notification.defaults |= Notification.DEFAULT_SOUND;
            notification.flags |= Notification.FLAG_AUTO_CANCEL;
            Intent notificationIntent = new Intent(context, Setting.class);
            PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
            notification.setLatestEventInfo(context,intent.getStringExtra("eventName"),intent.getStringExtra("eventDescription"), contentIntent);
            int SERVER_DATA_RECEIVED =  1;
            Calendar cal=Calendar.getInstance();
            Toast.makeText(context,"aavechhe "+intent.getBooleanExtra("Flag",false),Toast.LENGTH_SHORT).show();
            if(intent.getIntExtra("month",0)==cal.get(Calendar.DAY_OF_MONTH))
            {
                Toast.makeText(context,"aavechhe "+cal.get(Calendar.DAY_OF_MONTH),Toast.LENGTH_SHORT).show();
                notificationManager.notify(SERVER_DATA_RECEIVED, notification);
            }
            if(intent.getBooleanExtra("Flag",false))
                notificationManager.notify(SERVER_DATA_RECEIVED, notification);

        } catch (Exception e) {
            Toast.makeText(context, "There was an error somewhere, but we still received an alarm", Toast.LENGTH_SHORT).show();
            e.printStackTrace();

        }

Answer 3

您可以在此链接中找到您的主题：的 How to start an immediate alarm on Android

谢谢

如何在特定日期和时间启动警报？

3 个答案: