Question

我查看了整个代码，一切似乎都正常工作，没有错误，这使得找到解决方案变得更加困难。

我已将我的代码移到另一个项目中。

这是我的广播接收器类：

public class MyBroadcastReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    Notification.Builder builder = new Notification.Builder(context);
    builder.setContentTitle(intent.getStringExtra("Next"));
    builder.setContentText(intent.getStringExtra("String"));
    builder.setSmallIcon(R.drawable.notify);

    NotificationManager notificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(325, builder.build());
}
}

我在我的主要活动中称之为：

    private void notifyUser() {
    Intent intent = new Intent(this, MyBroadcastReceiver.class);
    intent.putExtra("Next", getResources().getString(R.string.lesson_next));

    int days_int = (sun) ? 1:2;

    for (int i = 0; i < days_length; i++) {
        Calendar[] calendars = getCalendars(i, days_int + i);
        ArrayList<String> arrayList = schedules.get(i);
        for (int j = 0; j < calendars.length; j++) {
            String s = arrayList.get(j);
            if (!s.equals(getResources().getString(R.string.lesson_window))) {
                intent.putExtra("String", s);
                notifyUserTag(intent, 135124 + count, calendars[j].getTimeInMillis());
                count++;
            }
        }
    }
}

private void notifyUserTag(Intent intent, int id, long currentTimeMillis) {
    PendingIntent pendingIntent = PendingIntent.getBroadcast(
            this.getApplicationContext(), id, intent, 0);
    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, currentTimeMillis,
            AlarmManager.INTERVAL_DAY * 7, pendingIntent);
}

private Calendar[] getCalendars(int i, int day) {
    int[] nums = lessonNum(schedules.get(i)); int len = nums.length;
    Calendar[] calendars = new Calendar[len];
    for (int k = 0; k < len; k++)
        calendars[k] = setCalendar(nums[k], day);
    return calendars;
}

private int[] lessonNum(ArrayList<String> stringArrayList) {
    int size = stringArrayList.size();
    int[] nums = new int[size];
    for (int i = 0; i < size; i++)
        nums[i] = lessonNumTry(i, stringArrayList);
    return nums;
}

private int lessonNumTry(int i, ArrayList<String> arrayList) {
    try {
        if (Integer.parseInt(arrayList.get(i).substring(1,2)) == 0)
            return 10;
    }
    catch (NumberFormatException e) {
        return Integer.parseInt(arrayList.get(i).substring(0,1));
    }
    return -1;
}

private Calendar setCalendar(int i, int day) {
    Calendar calendar = Calendar.getInstance();
    switch (i) {
        case 0:
            calHelper(calendar, day, 6, 0);
            break;
        case 1:
            calHelper(calendar, day, 7, 0);
            break;
        case 2:
            calHelper(calendar, day, 8, 0);
            break;
        case 3:
            calHelper(calendar, day, 8, 55);
            break;
        case 4:
            calHelper(calendar, day, 9, 50);
            break;
        case 5:
            calHelper(calendar, day, 10, 55);
            break;
        case 6:
            calHelper(calendar, day, 11, 50);
            break;
        case 7:
            calHelper(calendar, day, 12, 45);
            break;
        case 8:
            calHelper(calendar, day, 13, 40);
            break;
        case 9:
            calHelper(calendar, day, 14, 25);
            break;
        case 10:
            calHelper(calendar, day, 15, 15);
            break;
    }
    return calendar;
}

private void calHelper(Calendar calendar, int day, int hour, int minute) {
    long currTime = calendar.getTimeInMillis();
    calendar.set(Calendar.DAY_OF_WEEK, day);
    calendar.set(Calendar.HOUR_OF_DAY, hour);
    calendar.set(Calendar.MINUTE, minute);
    calendar.set(Calendar.SECOND, 0);
    long getTime = calendar.getTimeInMillis();
    if (getTime < currTime)
        calendar.setTimeInMillis(getTime + 604800000);
}

发送通知的函数（notifyUser（））应该获得一组日历，每个日历指定一天/小时/分钟，并设置警报以在那时每周启动广播接收器。我在旧项目中使用了完全相同的代码并且它工作正常，但现在却没有。我的旧项目和新项目之间的主要变化是新的使用数据库来存储数据（sqlite3）而旧的使用文件，我不认为这与广播接收器不是这样的事实相关被呼叫/显示/正在进行的任何事情。

在清单中我有这个

<receiver android:name=".MyBroadcastReceiver" />

任何帮助将不胜感激！

Answer 1

如果你在清单中说明

<receiver android:name=".MyBroadcastReceiver" />

MyBroadcastReceiver必须位于代码根目录中，而不是位于子包中。它在根包中吗？您可能希望在清单中输入整个包名称，例如：

<receiver android:name="org.myapp.receivers.MyBroadcastReceiver" />

Answer 2

您尚未使用sendBroadcast(intent);

开始使用notifyUser（）方法

Answer 3

您在定义意图后错过了发送广播意图。在定义你的意图后添加这一行：

sendBroadcast(intent);

Answer 4

在清单中注册具有以下意图过滤器的接收器。

<action android:name="android.intent.action.BOOT_COMPLETED"/>

将代码移动到另一个项目后，广播接收器无法正常工作

4 个答案: