Android RoomDB 自定义更新查询给出 android.database.sqlite.SQLiteConstraintException：NOT NULL 约束失败：

Question

当我尝试使用两个字符串参数运行 updateAlarmTriggered 查询时，出现以下错误：

Logcat输出

E/SQLiteLog: (1299) abort at 33 in [UPDATE alarmTable SET triggered = 1 AND triggerTime = ? WHERE date = ?]: NOT NULL constraint failed: alarmTable.triggered

android.database.sqlite.SQLiteConstraintException: NOT NULL constraint failed: alarmTable.triggered (code 1299)

这是我的 Dao 和 Entity 类:

AlarmDao.java

@Query("UPDATE alarmTable SET triggered = 1 AND triggerTime = :triggerTime WHERE date = :alarmDate")
    void updateAlarmTriggered(String alarmDate, String triggerTime);

AlarmEntity.java

@PrimaryKey
@NonNull
private String date;

@NonNull
private int triggered;

@Nullable
private String triggerTime;

@NonNull
public String getDate() {return date; }

public void setDate(@NonNull String date) {this.date = date; }

@NonNull
public int getTriggered() {return triggered; }

public void setTriggered(@NonNull int triggered) { this.triggered =triggered; }

我初始化新实体：

@Insert
    void insertAlarm(AlarmEntity alarmEntity);

而 alarmEntity 对象 I:

 AlarmEntity newAlarm = new AlarmEntity();
 newAlarm.setDate(time.substring(4,20) + time.substring(30,34));
 newAlarm.setTriggered(0);
 newAlarm.setDeleted(0);

我无法弄清楚 NOT NULL 约束在 alarmTable.triggered 上失败的原因，因为这就是我在 updateQuery 中将其设置为 1 的原因。

Answer 1

要更新多列，请使用逗号 , 分隔列。喜欢关注

@Query("UPDATE alarmTable SET triggered = 1, triggerTime = :triggerTime WHERE date = :alarmDate")
void updateAlarmTriggered(String alarmDate, String triggerTime);

Android RoomDB 自定义更新查询给出 android.database.sqlite.SQLiteConstraintException：NOT NULL 约束失败：

Android RoomDB custom update query gives android.database.sqlite.SQLiteConstraintException: NOT NULL constraint failed:

java

sqlite

android

android-sqlite

android-room