iOS點擊發送短信按鈕跳轉到手機短信界面實現發送短信

#import "ViewController.h"

@interface ViewController ()
@end
@implementation ViewController

(void)viewDidLoad {
  [super viewDidLoad];
  NSLog(@"%@",NSHomeDirectory());
  UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
  button.frame = CGRectMake(100, 100, 40, 30);
  [button setTitle:@"發送" forState:UIControlStateNormal];
  [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  button.backgroundColor=[UIColor redColor];
  [self.view addSubview:button];
  [button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];
}

(void)buttonClick {
//首先判斷當前設備是否可以發送短信
  if([MFMessageComposeViewController canSendText])
  {

  MFMessageComposeViewController *mc=[[MFMessageComposeViewController alloc] init];

  //設置委托
  mc.messageComposeDelegate=self;

  //短信內容
  mc.body=[[NSString alloc] initWithUTF8String:"你好啊" ];

  //設置短信收件方
  mc.recipients=[NSArray arrayWithObject:@"10010"];

  [self presentViewController:mc animated:YES completion:nil];

}else{

  [[[UIAlertView alloc] initWithTitle:nil message:@"抱歉，沒有此功能" delegate:self cancelButtonTitle:@"?"
                    otherButtonTitles:nil, nil] show];


}
}


//短信發送的處理結果
-(void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{
    switch (result)
    {
        case MessageComposeResultSent:
            NSLog(@"text message sent successfully");
            break;
        case MessageComposeResultCancelled:
            NSLog(@"text message cancelled");
            [self dismissViewControllerAnimated:YES completion:nil];
            break;
        case MessageComposeResultFailed:
            NSLog(@"text message failed");
            break;
        default:
            NSLog(@"error happens");
            break;

    }
}
@end</pre>