即時通訊新的iphone,我有自定義後退按鈕在相機視圖和使用poptoviewcontroller,它不工作,但我想當我點擊後退按鈕導航主屏幕,如何?請任何人幫助我。如何從iPhone中的相機視圖導航前一個屏幕?
我試過的源代碼
backbtn=[UIButton buttonWithType:UIButtonTypeCustom];
backbtn.frame=CGRectMake(40, 10, 80, 40);
[backbtn setBackgroundImage:[UIImage imageNamed:@"backspace.png"] forState:UIControlStateNormal];
[backbtn addTarget:self action:@selector(gotoprevious) forControlEvents:UIControlEventTouchUpInside];
[buttonView addSubview:backbtn];
-(void)gotoprevious
{
NSLog(@"Go to prevoius screen");
Homepage *homepage=[[Homepage alloc]init];
[self.navigationController popToViewController:homepage animated:YES];
}