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| #import "ViewController.h"
@interface ViewController ()
@end
#define BTN_CAMERA 0
#define BTN_READ 1
#define BTN_WRITE 2
@implementation ViewController
//初期化
- (void)viewDidLoad {
[super viewDidLoad];
//カメラボタンの生成
UIButton *btnCamera = [self makeButton:CGRectMake(self.view.center.x - 100, self.view.center.y - 200, 200, 40)
text:@"カメラ起動"
tag:BTN_CAMERA];
[self.view addSubview:btnCamera];
//フォト読み込みボタンの生成
UIButton *btnRead = [self makeButton:CGRectMake(self.view.center.x - 100, self.view.center.y - 140, 200, 40)
text:@"フォトライブラリを開く"
tag:BTN_READ];
[self.view addSubview:btnRead];
//フォト書き込みボタンの生成
UIButton* btnWrite=[self makeButton:CGRectMake(self.view.center.x - 100, self.view.center.y - 80, 200, 40)
text:@"写真を書き込む"
tag:BTN_WRITE];
[self.view addSubview:btnWrite];
//イメージビューの生成
_imageView= [self makeImageView:CGRectMake(self.view.center.x - 100, 320, 200, 200)
image:nil];
[self.view addSubview:_imageView];
}
//アラートの表示
- (void)showAlert:(NSString *)title text:(NSString *)text {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:text
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
//テキストボタンの生成
- (UIButton *)makeButton:(CGRect)rect text:(NSString *)text tag:(int)tag {
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:text forState:UIControlStateNormal];
[button setFrame:rect];
[button setTag:tag];
[button addTarget:self
action:@selector(clickButton:)
forControlEvents:UIControlEventTouchUpInside];
return button;
}
//イメージビューの生成
- (UIImageView *)makeImageView:(CGRect)rect image:(UIImage *)image {
UIImageView *imageView= [[UIImageView alloc] init];
[imageView setFrame:rect];
[imageView setImage:image];
[imageView setContentMode:UIViewContentModeScaleAspectFit];
return imageView;
}
//イメージピッカーのオープン
- (void)openPicker:(UIImagePickerControllerSourceType)sourceType {
//カメラとフォトアルバムの利用可能チェック
if (![UIImagePickerController isSourceTypeAvailable:sourceType]) {
[self showAlert:@"" text:@"利用できません"];
return;
}
//イメージピッカー
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = sourceType;
picker.delegate = self;
//ビューコントローラのビューを開く
[self presentViewController:picker animated:YES completion:nil];
}
//イメージピッカーのイメージ取得時に呼ばれる
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info {
//イメージの指定
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
[_imageView setImage:image];
//ビューコントローラのビューを閉じる
[[picker presentingViewController] dismissViewControllerAnimated:YES completion:nil];
}
//イメージピッカーのキャンセル時に呼ばれる
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)pickerCtl {
//ビューコントローラのビューを閉じる
[[pickerCtl presentingViewController] dismissViewControllerAnimated:YES completion:nil];
}
//ボタンクリック時のイベント処理
- (IBAction)clickButton:(UIButton *)sender {
if (sender.tag == BTN_CAMERA) {
[self openPicker:UIImagePickerControllerSourceTypeCamera];
} else if (sender.tag == BTN_READ) {
[self openPicker:UIImagePickerControllerSourceTypePhotoLibrary];
} else if (sender.tag == BTN_WRITE) {
UIImage *image = [_imageView image];
if (image == nil) return;
//イメージのフォトアルバムへの書き込み
UIImageWriteToSavedPhotosAlbum(image,
self,
@selector(finishExport:didFinishSavingWithError:contextInfo:),
NULL);
}
}
//フォト書き込み完了
- (void)finishExport:(UIImage *)image didFinishSavingWithError:(NSError *)error
contextInfo:(void *)contextInfo {
if (error == nil) {
[self showAlert:@"" text:@"フォト書き込み完了"];
} else {
[self showAlert:@"" text:@"フォト書き込み失敗"];
}
}
@end
|
