如何从iPhone SQLite数据库获取整数值通常我们使用以下是varchar或string但是我们如何获得NSInteger值？
const char *sql = "select * from questions";
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK) {
while(sqlite3_step(selectstmt) == SQLITE_ROW) {
NSInteger primaryKey = sqlite3_column_int(selectstmt, 0);
DataController *coffeeObj = [[DataController alloc] initWithPrimaryKey:primaryKey];
coffeeObj.restaurantLocation = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)];
coffeeObj.foodQualityRating = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)];
restaurantlocation和foodquality rating或NSString我在Integer中有调查ID我们如何从表中获取它.
我正在从我想要的iphone应用程序发送电子邮件
现在身体领域MyScroe和我的时间在同一条线上显示我希望他们应该在单独的线上各自如何显示
NSString * emailBody = [NSString stringWithFormat:@"My Score: %d/%d, My Time: %@", numberOfCorrectAnswer, [[[DataManager sharedInstance] questions] count], time];
[picker setMessageBody:emailBody isHTML:NO];
我正在用HTML创建一个图表.我使用的是API amCharts,但问题是它在图表中显示了文本"amchart".
如何删除该文本以使其看起来不错？
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Charts</title>
<link rel="stylesheet" href="style.css" type="text/css">
<script src="amcharts.js" type="text/javascript"></script>
<script type="text/javascript">
var chart;
var chartData = [{
country: "USA",
visits: 400,
color: "#FF0F00"
}, {
country: "China",
visits: 380,
color: "#FF6600"
}, {
country: "Japan",
visits: 360,
color: "#FF9E01"
}, {
country: "Germany",
visits: 340,
color: "#FCD202"
}, {
country: "UK",
visits: 320,
color: "#F8FF01"
}, {
country: "France",
visits: 300,
color: "#B0DE09"
}, {
country: "India",
visits: 240,
color: "#04D215"
}, …