Room数据库

@Entity(tableName = "videosss")
public class Video {
    @PrimaryKey(autoGenerate = true)
    private long id;
    @ColumnInfo
    private String videoimage;
    @ColumnInfo
    private String videopath;
    @ColumnInfo
    private String caption;

}

public interface VidaoDao {

    @Query("select * from videosss")
    List<Video> getVideoData();

    @Insert
    void insert(Video...videos);

    @Delete
    void delete(Video...videos);

    @Update
    void updata(Video...videos);
}

public class DBUtils {

    public static AppDatabase app;

    public static AppDatabase getApp(){
        if (app == null) {
            app = Room.databaseBuilder(App.getContext(),AppDatabase.class,"douyin").build();
        }
        return app;
    }
}

@Database(entities = {Video.class},version = 1,exportSchema = false)
public abstract class AppDatabase extends RoomDatabase {
    public abstract VidaoDao vidaoDao();
}

class ActivityMain {

DBUtils.getApp().vidaoDao().insert(video);

}