IOS Ethereum

6. This is virtual currency. It's too risky. You'd better not play it

7. 客户端代码是这样的
#import "ViewController.h"
@implementation ViewController
-(void)aaa:(UIButton *)btn
{
NSString *method=[NSString stringWithFormat:@"login"];
NSString *username=[NSString stringWithFormat:@"123"];
笭肠蒂段郦灯垫犬叮华 NSString *password=[NSString stringWithFormat:@"123"];
NSString *urlString= [NSString stringWithFormat:@"",@"method=",method,@"username=",username,@"password=",password];

ASIFormDataRequest *requestForm = [[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:urlString]];
//设置需要POST的数据，这里提交两个数据，A=a&B=b
//[requestForm setPostValue:@"a" forKey:@"A"];
//[requestForm setPostValue:@"b" forKey:@"B"];
[requestForm startSynchronous];

//输入返回的信息
NSLog(@"response\n%@",[requestForm responseString]);
[requestForm release];
}
- (void)viewDidLoad
{
[super viewDidLoad];
button1=[[UIButton alloc]initWithFrame:CGRectMake(200, 200, 50, 50)];
button1.backgroundColor=[UIColor redColor];
[self.view addSubview:button1];
[button1 addTarget:self action:@selector(aaa:) forControlEvents:UIControlEventTouchUpInside];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL):(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != );
}
@end
客户端想要访问服务器
必须加上服务器的ip 服务端我是这样实现的
服务器是用java开发的
public
void doLogin(HttpServletRequest request,HttpServletResponse response) throws
IOException{
String
username=request.getParameter("username");
String
password=request.getParameter("password");
String
getStr=request.getParameter("A");
System.out.println("用户名:"+username+
"密码:"+password);
getAddr(request);
PrintWriter
out=response.getWriter();
String msg=null;
if(username!=null&&username.equals("123")&&password!=null
&&password.equals("123")&&
getStr!=null&&getStr.equals("a")){
msg="登陆成功";
}
else
{
msg="登陆失败";
}

out.print(msg);
out.flush();
out.close();
}

8. At present, Iost has officially become the top 4 DAPP public chain platform outside eth, EOS and TRX, and the daily transaction number of Iost main network has exceeded that of Ethereum, ranking third in the world. In the future, Iost will build the world's first blockchain project based on capacity expansion and build the world's largest decentralized system.

9. Eth generally follows the price trend of bitcoin. Comparing the betas of the rise and fall of eth, we can see that for most of the past 18 months, the volatility of eth when the price of BTC falls is greater than that when the price of BTC rises. However, we are beginning to see the beta increase when eth rises. Considering the high internal correlation of cryptocurrency, we can make a prediction that at least in the short term, if the market rebounds, ETH's rebound is likely to exceed that of BTC.

10. In the main chain, Iost has officially become the top 4 DAPP public chain platform outside eth, EOS and TRX, and the daily transaction number of Iost main network has exceeded that of Ethereum, ranking third in the world. In the future, Iost will build the world's first blockchain project based on capacity expansion and build the world's largest decentralized system.