在處理個人資料 - 頭像的時候，通常有兩個選項，一個是調用系統相機，一個是調用系統相冊。這里要使用的就是UIImagePickerController方法。

在頭像位置的imageView添加一個手勢，或者添加一個透明的按鈕，用來實現click方法，直接上代碼：

- (IBAction)click:(id)sender{//創建提醒視圖 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提醒" message:nil preferredStyle:UIAlertControllerStyleActionSheet];UIAlertAction *alertAction = [UIAlertAction actionWithTitle:@"相機" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {//判斷設備是否存在攝像頭，有就調用系統相機，沒有，就提醒用戶if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {//創建相機 UIImagePickerController *picker = [[UIImagePickerController alloc] init];//文件由來 picker.sourceType = UIImagePickerControllerSourceTypeCamera; //指定數據來源來自于相機 picker.delegate = self;// 指定代理 picker.allowsEditing = YES; //允許編輯//模態彈出 [self presentViewController:picker animated:YES completion:nil];}else{//沒有攝像頭，提醒用戶 您的設備沒有攝像頭 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"您的設備沒有攝像頭" message:nil preferredStyle:UIAlertControllerStyleAlert];UIAlertAction *alertAction1 = [UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleDestructive handler:nil];[alertController addAction:alertAction1];[self presentViewController:alertController animated:YES completion:nil];}}];[alertController addAction:alertAction];UIAlertAction *alertAction2 = [UIAlertAction actionWithTitle:@"相冊" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {UIImagePickerController *pickerC = [[UIImagePickerController alloc] init];pickerC.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;//指定數據來源為相冊 pickerC.delegate = self; //指定代理 pickerC.allowsEditing = YES; // 允許編輯 [self presentViewController:pickerC animated:YES completion:nil];}];[alertController addAction:alertAction2];[self presentViewController:alertController animated:YES completion:nil];}//選取圖片之后執行的方法- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{NSLog(@"%@",info);UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];self.photoImage.image = image;[picker dismissViewControllerAnimated:YES completion:nil];}

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轉載于:https://www.cnblogs.com/Walking-Jin/p/5468379.html

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