獲得SIGABRT for UIImagePickerControllerSourceTypeCamera

Question

我試圖做一個非常簡單的iPhone應用程序，顯示設備的實時相機視圖，並添加了以下代碼，我發現通過研究。

-(void)viewDidLoad{ 
UIImagePickerController *imagePicker = 
[[UIImagePickerController alloc] init]; 

imagePicker.delegate = self; 

imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; 

imagePicker.allowsEditing = YES; 

[self presentModalViewController:imagePicker animated:YES]; 

[imagePicker release]; 

}

這隻會導致SIGABRT錯誤，我沒有線索做什麼用。

由於上述代碼似乎是必須實現攝像頭視圖，是否還有其他的東西，我錯過了？沒想到簡單地加載相機視圖會給我帶來壓力... 請幫我一把。

ps.I'm使用xcode 4 btw。

Answer 1

檢查這增加

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { 
UIImagePickerController *imagePicker = 
[[UIImagePickerController alloc] init]; 

imagePicker.delegate = self; 

imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; 

imagePicker.allowsEditing = YES; 

[self presentModalViewController:imagePicker animated:YES]; 

[imagePicker release]; 

} 

else 
{ 
//..... 
}