Room 数据库的问题

[yougaohui]

@database(entities = {User.class, Bus.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {

public abstract UserDao userDao();

public abstract BusDao busDao();

public static AppDatabase get(AppComponent component) {
    return (AppDatabase) component.dbManager().database();
}

}

@entity(tableName = "Bus")
public class Bus {
@PrimaryKey(autoGenerate = true)
private int ids;
@SerializedName("name")
String name;

public int getIds() {
    return ids;
}

public void setIds(int ids) {
    this.ids = ids;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

}

@entity(tableName = "User")
public class User {

@PrimaryKey(autoGenerate = true)
private int id;

// ID
@SerializedName("userId")
private String userId;

// 名字
@ColumnInfo(name = "name")
private String name;

// 排除这个字段，不存入数据库
@Ignore
Bitmap bitmap;

public User() {

}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getUserId() {
    return userId;
}

public void setUserId(String userId) {
    this.userId = userId;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public Bitmap getBitmap() {
    return bitmap;
}

public void setBitmap(Bitmap bitmap) {
    this.bitmap = bitmap;
}

}
我这样操作数据库，要抛出Room cannot verify the data integrity. Looks like you've changed schema but forgot to update the version number. You can simply fix this by increasing the version number.这个异常。难道这个框架只能初始化一个类在AppDatabase 里面吗？可以qq联系你吗沟通一下这个心数据库的用法，我网上查了很多资料，都没发现什么原因导致的，有的说是数据库更新。感觉不是那么回事啊

[yougaohui]

@database(entities = {User.class, Bus.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {

public abstract UserDao userDao();

public abstract BusDao busDao();

public static AppDatabase get(AppComponent component) {
    return (AppDatabase) component.dbManager().database();
}

}

@entity(tableName = "Bus")
public class Bus {
@PrimaryKey(autoGenerate = true)
private int ids;
@SerializedName("name")
String name;

public int getIds() {
    return ids;
}

public void setIds(int ids) {
    this.ids = ids;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

}

@entity(tableName = "User")
public class User {

@PrimaryKey(autoGenerate = true)
private int id;

// ID
@SerializedName("userId")
private String userId;

// 名字
@ColumnInfo(name = "name")
private String name;

// 排除这个字段，不存入数据库
@Ignore
Bitmap bitmap;

public User() {

}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getUserId() {
    return userId;
}

public void setUserId(String userId) {
    this.userId = userId;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public Bitmap getBitmap() {
    return bitmap;
}

public void setBitmap(Bitmap bitmap) {
    this.bitmap = bitmap;
}

}
我这样操作数据库，要抛出Room cannot verify the data integrity. Looks like you've changed schema but forgot to update the version number. You can simply fix this by increasing the version number.这个异常。难道这个框架只能初始化一个类在AppDatabase 里面吗？可以qq联系你吗沟通一下这个心数据库的用法，我网上查了很多资料，都没发现什么原因导致的，有的说是数据库更新。感觉不是那么回事啊

找到原因了，原来数据库文件保存到sd卡根目录里面，没删除，我卸载后也删除不了，所以一直用的第一次初始化那个表的数据库，需要手动删除才行。