小编xeo*_*rno的帖子

struct
{
    unsigned resizesCellWidths:1;
    unsigned numColumns:6;
    unsigned separatorStyle:3;
    unsigned allowsSelection:1;
    unsigned backgroundViewExtendsUp:1;
    unsigned backgroundViewExtendsDown:1;
    unsigned usesPagedHorizontalScrolling:1;
    unsigned updating:1;
    unsigned ignoreTouchSelect:1;
    unsigned needsReload:1;
    unsigned allCellsNeedLayout:1;
    unsigned isRotating:1;
    unsigned clipsContentWidthToBounds:1;
    unsigned isAnimatingUpdates:1;
    unsigned requiresSelection:1;
    unsigned contentSizeFillsBounds:1;
    unsigned delegateWillDisplayCell:1;
    unsigned delegateWillSelectItem:1;
    unsigned delegateWillSelectItemMultiTouch:1;
    unsigned delegateWillDeselectItem:1;
    unsigned delegateDidSelectItem:1;
    unsigned delegateDidSelectItemMultiTouch:1;
    unsigned delegateDidDeselectItem:1;
    unsigned delegateGestureRecognizerActivated:1;
    unsigned delegateAdjustGridCellFrame:1;
    unsigned delegateDidEndUpdateAnimation:1;
    unsigned dataSourceGridCellSize:1;
    unsigned int isEditing:1;
    unsigned __RESERVED__:1;
} _flags;

1. 这个结构的目的是什么？
2. 什么是:1在每行的结束符号意味着什么？
3. unsigned当没有显式类型时,修饰符的含义是什么？

谢谢

我有一个SQLite请求要做,我不知道该怎么做.

这里是 :

SELECT videoid,inappid FROM store,video 
WHERE store.paid='1' AND store.checked='1' 
AND video.inappid=store.inappid AND video.download =='0' 
ORDER BY video.inappid DESC,video.videoid;

- > SQL错误答案:DB错误:1"模糊列名:inappid"

我解释一下:商店和视频是2个表.在商店中,有'inappid'引用的产品(com.mysite.myapp.000).'inappid'列名是表中的键,是唯一的.付费和检查只是商店表中的布尔值.

在视频中,有...视频,每个视频都有一个唯一的键'videoid'.一个'inappid'列,引用商店表中的inappid.

所以我的要求是:在商店表中选择我所有的inappid params元素,其中付费和已检查为TRUE,并在视频表中选择此视频的所有视频视频,此视频尚未下载.

我知道我必须使用JOIN和ON元素,但我不知道如何

请帮忙哦.

为了创建磁贴管理系统,我在res/drawable目录中有一包图像.如何动态加载该资源？

喜欢 : F_16.0_0_112.jpg. ("F_"+zoom"+"._"+XCoord+"_"+YCoord".jpg")

有像getDrawable(String)这样的函数吗？