Question

我可以从Android NotificationListenerService打开Room数据库吗？

当我尝试在NotificationListenerService中打开数据库时，我的应用程序崩溃，说

time_t timer

这些错误是什么意思？

如果我删除inMemoryDatabaseBuilder行，它将正常工作。我最初是从一个普通的databaseBuilder开始的，但是我正在尝试使用内存中的一个，以防万一是问题所在（看来不是问题所在）。

如果我只是W/ActivityManager: Force finishing activity com.xyz.abc.notificationmanager/.MainActivity W/InputDispatcher: channel '79ec910 com.xyz.abc.notificationmanager/com.xyz.abc.notificationmanager.MainActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9 E/InputDispatcher: channel '79ec910 com.xyz.abc.notificationmanager/com.xyz.abc.notificationmanager.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!而不用val db = Room.inMemoryDatabaseBuilder(applicationContext, TheDatabase::class.java)，它不会崩溃。

代码：

数据库：

.build()

NotificationListenerService：

package com.xyz.abc.notificationmanager
import android.arch.persistence.room.*

@Entity(tableName="matches")
class SettingsMatch {
    @PrimaryKey(autoGenerate=true)
    var id: Long = 0

    @ColumnInfo(name="package_name")
    var packageName: String? = null

    @ColumnInfo(name="group_id")
    var groupId: Long? = null

    @ColumnInfo(name="comment")
    var comment: String? = null

    @ColumnInfo(name="search_title")
    var searchTitle: String? = null

    @ColumnInfo(name="search_content")
    var searchContent: String? = null
}

@Entity(tableName="groups", foreignKeys=arrayOf(
    ForeignKey(entity=SettingsMatch::class, parentColumns=arrayOf("id"), childColumns=arrayOf("group_id"))
))
class SettingsGroup {
    @PrimaryKey(autoGenerate=true)
    var id: Long = 0

    @ColumnInfo(name="comment")
    var comment: String? = null

    @ColumnInfo(name="min_secs_between_alerts")
    var minSecsBetweenAlerts: Int = 0

    @ColumnInfo(name="last_alert_time")
    var lastAlertTime: Int = 0

    @ColumnInfo(name="alert_when_screen_on")
    var alertWhenScreenOn: Boolean = true

    @ColumnInfo(name="volume_percent")
    var volumePercent: Int = 100

    @ColumnInfo(name="vibration_pattern")
    var vibrationPattern: LongArray = longArrayOf(0)
}

@Dao
interface SettingsMatchDao {
    @get:Query("SELECT * FROM matches")
    val all: List<SettingsMatch>

    @Query("SELECT * FROM matches WHERE package_name=:packageName")
    fun loadAllByPackageName(packageName: String): List<SettingsMatch>

    @Query("SELECT * FROM matches "
            + "WHERE package_name=:packageName AND "
            + "(:searchTitle LIKE CONCAT('%', search_title, '%') OR :searchContent LIKE CONCAT('%', search_content, '%')) "
            + "LIMIT 1")
    fun loadByPackageNameTitleContent(packageName: String, searchTitle: String, searchContent: String): SettingsMatch

    @Insert
    fun insert(settingsMatch: SettingsMatch): Long

    @Delete
    fun delete(settingsMatch: SettingsMatch)
}

@Dao
interface SettingsGroupDao {
    @get:Query("SELECT * FROM groups")
    val all: List<SettingsGroup>

    @Query("SELECT * FROM groups WHERE id=:id LIMIT 1")
    fun loadByGroupId(id: Int): SettingsGroup

    @Query("SELECT * FROM groups "
            + "INNER JOIN matches ON matches.group_id = groups.id "
            + "WHERE package_name=:packageName AND "
            + "(:searchTitle LIKE CONCAT('%', search_title, '%') OR :searchContent LIKE CONCAT('%', search_content, '%')) "
            + "LIMIT 1")
    fun loadByPackageNameTitleContent(packageName: String, searchTitle: String, searchContent: String): SettingsGroup

    @Insert
    fun insert(settingsGroup: SettingsGroup): Long

    @Delete
    fun delete(settingsGroup: SettingsGroup)
}

@Database(entities=arrayOf(SettingsMatch::class, SettingsGroup::class), version=1)
abstract class TheDatabase : RoomDatabase() {
    abstract fun matchDao(): SettingsMatchDao
    abstract fun groupDao(): SettingsGroupDao
}

构建会议室数据库对象会导致“强制完成活动”

0 个答案: