我正在开发一个用户可以安排培训日期和时间的应用程序。用户可以在使用应用程序时安排多个培训日期和时间。比如说，用户将安排两次训练，TR1和TR2。当TR1日期和时间匹配时，将向用户发送通知并点击通知，用户将被引导至培训活动。 TR2在达到培训的日期和时间时也会发生同样的情况。
为了安排通知，我使用 AlarmManager 。我面临的问题是，如果我安排多次培训，我只会收到最后一次通知。
生成通知的活动 ：
public class SettingsActivity extends Activity {
//objects for use
DateFormat fmtDateAndTime=DateFormat.getDateTimeInstance();
TextView dateAndTimeLabel;
Calendar dateAndTime=Calendar.getInstance();
ImageView confirm;
String dateTime;
EditText duration;
//Alarm manager object for notification
AlarmManager am;
//notification date and time
int hour;
int minute;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings_portrait);
duration=(EditText)findViewById(R.id.duration_editText);
dateAndTimeLabel=(TextView)findViewById(R.id.timeTxt);
updateLabel();
updateNotification();
am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// On Click Confirm
confirm=(ImageView)findViewById(R.id.confirm_imageView);
confirm.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
getDateTime();
setOneTimeAlarm();
}
});
}
//date picker
public void chooseDate(View v) {
new DatePickerDialog(SettingsActivity.this, d,
dateAndTime.get(Calendar.YEAR),
dateAndTime.get(Calendar.MONTH),
dateAndTime.get(Calendar.DAY_OF_MONTH))
.show();
}
//time picker
public void chooseTime(View v) {
new TimePickerDialog(SettingsActivity.this, t,
dateAndTime.get(Calendar.HOUR_OF_DAY),
dateAndTime.get(Calendar.MINUTE),
true)
.show();
}
private void updateLabel() {
dateAndTimeLabel.setText(fmtDateAndTime
.format(dateAndTime.getTime()));
}
DatePickerDialog.OnDateSetListener d=new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
dateAndTime.set(Calendar.YEAR, year);
dateAndTime.set(Calendar.MONTH, monthOfYear);
dateAndTime.set(Calendar.DAY_OF_MONTH, dayOfMonth);
updateLabel();
updateNotification();
}
};
TimePickerDialog.OnTimeSetListener t=new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hourOfDay,
int minute) {
dateAndTime.set(Calendar.HOUR_OF_DAY, hourOfDay);
dateAndTime.set(Calendar.MINUTE, minute);
updateLabel();
updateNotification();
}
};
// Notification Function
// private void Notification(String notificationTitle, String notificationMessage)
// {
// NotificationManager notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
// Notification notification = new Notification(R.drawable.ic_launcher, "Training Scheduled!", System.currentTimeMillis());
// //on click notification goto dinnerden activity
// Intent notificationIntent = new Intent(this, SettingsActivity.class);
// PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
//
// notification.setLatestEventInfo(SettingsActivity.this, notificationTitle, notificationMessage, pendingIntent);
// notificationManager.notify(10001, notification);
// }
//getting date time from textview
void getDateTime()
{
dateTime= dateAndTimeLabel.getText().toString()+" Duration HRS: "+duration.getText().toString();
makeAToast(dateTime);
//Notification("Training Scheduled at:",dateTime);
}
void updateNotification()
{
hour= dateAndTime.get(Calendar.HOUR_OF_DAY);
minute=dateAndTime.get(Calendar.MINUTE);
}
public void setOneTimeAlarm() {
// the time set
Calendar calendar = Calendar.getInstance();
// hour= dateAndTime.get(Calendar.HOUR_OF_DAY);
// minute=dateAndTime.get(Calendar.MINUTE);
// int hour= dateAndTime.get(Calendar.HOUR_OF_DAY);
// int minute=dateAndTime.get(Calendar.MINUTE);
// noon tomorrow
//calendar.add(Calendar.DAY_OF_YEAR, 1);
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, 0);
Intent intent = new Intent(this, TimeAlarm.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_ONE_SHOT);
am.set(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), pendingIntent);
}
public void setRepeatingAlarm() {
Intent intent = new Intent(this, TimeAlarm.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_CANCEL_CURRENT);
am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),
(5 * 1000), pendingIntent);
}
public void makeAToast(String str) {
Toast toast = Toast.makeText(this,str, Toast.LENGTH_LONG);
toast.setGravity(Gravity.BOTTOM, 0, 0);
toast.setDuration(1000000);
toast.show();
}
}
创建通知的类：
public class TimeAlarm extends BroadcastReceiver {
NotificationManager nm;
@Override
public void onReceive(Context context, Intent intent) {
nm = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
CharSequence from = "Scheduled Training";
CharSequence message = "Please attend the scheduled training";
// Intent welcomeIntent = new Intent(context, CustomAlarm.class);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
new Intent(), 0);
Notification notif = new Notification(R.drawable.ic_launcher,
"Crazy About Android...", System.currentTimeMillis());
notif.setLatestEventInfo(context, from, message, contentIntent);
nm.notify(1, notif);
}
}
活动的布局 ：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="488dp" >
<ImageView
android:id="@+id/confirm_imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:src="@drawable/schedule_button" />
<TextView
android:id="@+id/timeTxt"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginTop="41dp"
android:text="@string/time_show" />
<Button
android:id="@+id/timeBtn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/timeTxt"
android:layout_marginTop="34dp"
android:onClick="chooseTime"
android:text="@string/time" />
<Button
android:id="@+id/dateBtn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/timeBtn"
android:layout_marginTop="38dp"
android:onClick="chooseDate"
android:text="@string/date" />
<EditText
android:id="@+id/duration_editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/dateBtn"
android:layout_marginTop="36dp"
android:ems="10"
android:hint="@string/duration_hint"
android:inputType="number" />
<TextView
android:id="@+id/duration_textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/duration_editText"
android:layout_alignBottom="@+id/duration_editText"
android:layout_alignParentLeft="true"
android:text="@string/duration"
android:textAppearance="?android:attr/textAppearanceMedium" />
</RelativeLayout>
</LinearLayout>
</ScrollView>
manifest.xml 的一部分：
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<receiver android:name="com.project.nuroq.android.app.TimeAlarm" />
我想在特定时间（已实施）和日期（尚未实施）发出通知，这是现在没有发生的。最后一个只是被解雇了！
我哪里错了？提前谢谢！
答案 0 :(得分：1)
您必须为每个通知使用不同的ID。如果像你一样，所有人都使用相同的ID值，那么，根据notify() docs，前一个会被新的替换：
发布要在状态栏中显示的通知。如果是通知 具有相同ID的已经由您的应用程序发布并具有 尚未取消，将被更新的信息取代。