Question

我有关于重新安排任务的问题（有警报）我试图在未来的确切时间和日期设置任务然后关闭模拟器然后在等待弹出布局之后重新打开它当时间和日期到期时，我得到错误，表示无法在屏幕上打开（app / activity），同样在logcat中我看不到错误（可能应用程序已关闭），所以我是不确定我到底做错了什么。

以下是我用于服务的代码

public class ChibiReminderService extends WakefulIntentService {
 Date date;
 private long milliseconds = 0;
 public ChibiReminderService() {
        super("ChibiReminderService");`
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        DatabaseSched db = DatabaseSched.getInstance(this); //get access to the instance of DatabaseSched
        sched_lists alarm = new sched_lists();

        List<DatabaseSource> tasks = db.getListSched(); //Get a list of all the tasks there
        for (DatabaseSource task : tasks) {
            // Cancel existing alarm
            alarm.cancelAlarm(this, task.getId());
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm a");

             try {
                  date = format.parse(task.getDueDateTime());
                 milliseconds = date.getTime();
             } catch (Exception e) {
                 e.printStackTrace();
             }

            //regular alarms
            if(milliseconds >= System.currentTimeMillis()){
                alarm.setAlarm(this, task.getId());
            }
        }
        super.onHandleIntent(intent);
    }
}

OnBootReceiver

public class OnBootReceiver extends BroadcastReceiver {

 @Override
 public void onReceive(Context context, Intent intent) {
    // TODO Auto-generated method stub
    WakefulIntentService.acquireStaticLock(context); //acquire a partial WakeLock
    context.startService(new Intent(context, ChibiReminderService.class)); //start ChibiReminderService
 }

}

清单

  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.majimechibireminder2"
    android:versionCode="1"
    android:versionName="1.0" android:installLocation="preferExternal">

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="19" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" android:persistent="true">
      <receiver android:name=".OnBootReceiver" >
         <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
         </intent-filter>
     </receiver>

      <receiver android:name=".AlarmReceiver"></receiver>
       <service android:name=".ChibiReminderService" >
     </service>

下面

Answer 1

您需要在缺少的数据库连接上显式调用close，因此请在getListSched函数

的末尾添加它

List<DatabaseSource> getListSched(){
.. 
..// your code 
     yourSQLiteDatabaseObject.close();
}

或

如果您的yourSQLiteDatabaseObject实例是公开的，那么您可以在循环

之前执行此操作

 List<DatabaseSource> tasks = db.getListSched();
 db.yourSQLiteDatabaseObject.close();
        for (DatabaseSource task : tasks) {

注意：yourSQLiteDatabaseObject将成为SQLiteDatabase课程中DatabaseSched的对象，或者您需要查找该链，如果它不在DatabaseSched课程中;

BOOT_COMPLETED后无法启动意图

1 个答案: