手机开发之xcode 开发快速小手册

知识库

加载一张图片

UIImageView *imageView =[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 200, 200)];

imageView.image=[UIImage imageNamed:@"22.png"];
[self.view addSubview:imageView];

弹出窗口

NSString *msg = @”f*au*ck U”;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@”message” message:msg delegate:self cancelButtonTitle:@”No” otherButtonTitles:@”Yes”, nil]; [alert show];

集成一个弹窗方法
NSString *a = [NSString stringWithFormat:@"group s %d",index];
[self alert:a];

字符串数字转换

1，字符串拼接

NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];
2，字符转int

int intString = [newString intValue];

3，int转字符

NSString *stringInt = [NSString stringWithFormat:@"%d",intString];

解决中文乱码问题，POST也可以用，textfield也可以用的。
[NSString stringWithCString:[str UTF8String] encoding:NSUTF8StringEncoding];