我在使用谷歌地图v2绘制圆圈时遇到问题.圆形显示正确,但圆的边缘不平滑,它们非常清晰,有没有办法将Antialising应用于形状?谢谢
我的代码:
CircleOptions circleOptions = new CircleOptions()
.center(point)
.radius(500)
.fillColor(0x7F0000FF)
.strokeColor(Color.rgb(71, 143, 150))
.strokeWidth(2);
Run Code Online (Sandbox Code Playgroud) 我在调整我的UICollectionViewCells时遇到问题.我有6个完美对齐的细胞.然而,当我改变任何一个的大小时,最后一个单元格失去了它的水平对齐,我不知道为什么.这是我更改任何单元格高度时的结果:
如您所见,在此示例中,我正在更改第3个单元格的高度,并且最后一个单元格不再水平对齐.这是我的代码:
- (void)viewDidLoad
{
...
FlowLayout *flowLayout = [[FlowLayout alloc] init];
flowLayout.itemSize = CGSizeMake(152, 260);
flowLayout.sectionInset = UIEdgeInsetsMake( 5, 5, 5, 5);
flowLayout.minimumInteritemSpacing = 2.0f;
flowLayout.minimumLineSpacing = 8.0f;
flowLayout.scrollDirection = UICollectionViewScrollDirectionVertical;
self.collectionView.collectionViewLayout = flowLayout;
...
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:
(UICollectionViewLayout*)collectionViewLayout
sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.row == 2){
return CGSizeMake(152, 200);
}
return CGSizeMake(152, 270);
}
Run Code Online (Sandbox Code Playgroud) 我需要在Objective-C中使用带有NSArray的IN子句来执行Select语句.像这样的东西
NSArray *countries = [NSArray arrayWithObjects:@"USA", @"Argentina", @"England", nil];
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) {
const char *sqlStatement =
[[NSString stringWithFormat:@"select currencies from money where country IN countries] UTF8String];
....
Run Code Online (Sandbox Code Playgroud)
其中IN国家是带有字符串值的NSArray.这是真的吗?