我正在尝试安排任务＆＃34;敬酒消息＆＃34;出现在用户选择的时间内，但在此之后没有显示任何内容，我无法查看代码中的错误。 这是我的代码
public class TimePickerFragment extends DialogFragment implements
TimePickerDialog.OnTimeSetListener {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
//set The Calendar to to the wanted time!
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.AM_PM, Calendar.AM);
Intent setMsg = new Intent(MainActivity.this, TaskReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, setMsg, 0);
AlarmManager manager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
manager.setExact(AlarmManager.ELAPSED_REALTIME, calendar.getTimeInMillis(), pendingIntent);
}
}
public class TaskReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "it is working!", Toast.LENGTH_SHORT).show();
}
}
如果有更好的方法来安排这样的任务，请继续介绍它。
答案 0 :(得分：0)
在您的代码中使用它 而不是manager.setExact methode
manager.setRepeating（AlarmManager.RTC_WAKEUP，System.currentTimeMillis（），interval，pendingIntent）;
答案 1 :(得分：0)
#include "stdafx.h"
#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
// Global variables
string name;
int nic;
int contact;
string address;
int customerId;
string status;
string todaysVehicle;
string vnum;
string serviceType;
int GetInput()
{
int choice;
cin >> choice;
return choice;
}
struct list
{
string name;
int nic;
int contact;
string address;
int customerId;
string status;
string todaysVehicle;
string vnum;
string serviceType;
list *next;
};
// List Function Prototypes
bool empty(list *head);
void DisplayMenu();
void firsttElement(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum);
void insertCusomter(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum);
void removeCustomer(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum);
void customerList(list *current);
bool empty(list *head){
if (head == NULL)
return true;
else
return false;
}
// Main menu of the program
void DisplayMenu(){
}
void firstElement(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum){
list *temp1 = new list;
temp1->nic = nic;
temp1->next = NULL;
head = temp1;
last = temp1;
list *temp2 = new list;
temp2->name = name;
temp2->next = NULL;
head = temp2;
last = temp2;
list *temp3 = new list;
temp3->nic = contact;
temp3->next = NULL;
head = temp3;
last = temp3;
list *temp4 = new list;
temp4->address = address;
temp4->next = NULL;
head = temp4;
last = temp4;
list *temp5 = new list;
temp5->nic = customerId;
temp5->next = NULL;
head = temp5;
last = temp5;
list *temp6 = new list;
temp6->todaysVehicle = todaysVehicle;
temp6->next = NULL;
head = temp6;
last = temp6;
list *temp7 = new list;
temp7->vnum = vnum;
temp7->next = NULL;
head = temp7;
last = temp7;
}
void insertCustomer(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum){
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->nic = nic;
temp->next = NULL;
last->next = temp;
last = temp;
}
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->name = name;
temp->next = NULL;
last->next = temp;
last = temp;
}
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->address = address;
temp->next = NULL;
last->next = temp;
last = temp;
}
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->nic = contact;
temp->next = NULL;
last->next = temp;
last = temp;
}
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->nic = customerId;
temp->next = NULL;
last->next = temp;
last = temp;
}
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->todaysVehicle = todaysVehicle;
temp->next = NULL;
last->next = temp;
last = temp;
}
if (empty(head))
firstElement(head, last, nic, name, contact, address, customerId, todaysVehicle, vnum);
else {
list *temp = new list;
temp->vnum = vnum;
temp->next = NULL;
last->next = temp;
last = temp;
}
}
void removeCustomer(list *&head, list *&last){
if (empty(head))
cout << "There are no Customers in the Database! \n";
else if (head == last){
delete head;
head = NULL;
last = NULL;
}
else{
list *temp = head;
head = head->next;
delete temp;
}
}
void customerList(list *current){
if (empty(current))
cout << "The list is empty \n;";
else
{
cout << "The list contains: \n";
while (current != NULL){
cout << current->customerId << endl;
cout << current->nic << endl;
cout << current->name << endl;
cout << current->vnum << endl;
cout << current->todaysVehicle << endl;
cout << current->vnum << endl;
cout << current->contact << endl;
current = current->next;
}
}
}
// Main Fucntion
int main(int argc, _TCHAR* argv[], void insertCustomer(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum), void removeCustomer(list *&head, list *&last), void customerList(list *current)){
list *head = NULL;
list *last = NULL;
int choice;
do{
system("cls");
cout << "Clean Park Daily Car Services\n";
cout << "******************************\n";
cout << "Please make your selection\n";
cout << " \n";
cout << "1 - Register Customer\n";
cout << "2 - Request for Serivce\n";
cout << "3 - UnRegister Customer\n";
cout << "4 - Update Customer\n";
cout << "5 - View Customer\n";
cout << "6 - View all Customers\n";
cout << "7 - Exit\n";
cout << "\n";
cout << "Choice: ";
cin >> choice;
DisplayMenu();
switch (choice){
case 1: // Register a new customer
system("CLS");
cout << "PLease enter Customer National Id: \n";
cin >> nic;
cout << " Enter Customer Name: \n";
cin >> name;
cout << "Enter Customer Contact Number: \n";
cin >> contact;
cout << "Enter Customer Address: \n";
cin >> address;
cout << "Enter Customer Number: \n";
cin >> customerId;
cout << "Enter Vehicle's Date: \n";
cin >> todaysVehicle;
cout << "Enter Vehicle Number: \n";
cin >> vnum;
void insertCustomer(list *&head, list *&last, int nic, string name, int contact, string address, int customerId, string todaysVehicle, string vnum);
break;
case 2: // Request for Service
system("CLS");
case 3: // Remove customer
system("CLS");
removeCustomer(*&head, *&last);
break;
case 4: // Update customer
system("CLS");
case 5: // View Customer
system("CLS");
case 6: // View All Customers
system("CLS");
void customerList(list *current);
break;
case 7: // Exit Application
cout << "Goodbye!.." << endl;
exit(0);
default:
cout << "System exit \n";
}
} while (choice != 7);
return 0;
}