這是我自己寫的一個相機相冊調用分類。使用起來挺方便的。直接上代碼吧。
調用方法：
#import "UIViewController+ImagePickerAndCamera.h"
//在需要調用相機相冊的地方使用這個方法即可
[self createActionSheetForChooseImage:^(UIImage *image) {
//在這里處理圖片
}];
源碼：
#import@interface UIViewController (ImagePickerAndCamera)@property (nonatomic, copy) void (^CompleteBlock)(UIImage*);
// 創建彈出框來選擇圖片（相機相冊兩種方式）
- (void)createActionSheetForChooseImage:(void(^)(UIImage *))completeBlock;
@end
#import "UIViewController+ImagePickerAndCamera.h"#import#import "UIImage+UIImageExt.h"#import#importconst void * associateKey = @"ImagePickerAndCameraAssociateKey";
@implementation UIViewController (ImagePickerAndCamera)
- (void)setCompleteBlock:(void (^)(UIImage *))CompleteBlock{
objc_setAssociatedObject(self, associateKey, CompleteBlock, OBJC_ASSOCIATION_COPY_NONATOMIC);
}
- (void(^)(UIImage*))CompleteBlock{
return? objc_getAssociatedObject(self, associateKey);
}
// 創建彈出框來選擇圖片（相機相冊兩種方式）
- (void)createActionSheetForChooseImage:(void(^)(UIImage *))completeBlock{
UIAlertController *alertCtrl = [UIAlertController alertControllerWithTitle:@"提示" message:@"請選擇下列兩種方式的一種修改頭像" preferredStyle:UIAlertControllerStyleActionSheet];
__weak typeof(self) weakSelf = self;
[alertCtrl addAction:[UIAlertAction actionWithTitle:@"相冊" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[weakSelf localPhoto];
}]];
[alertCtrl addAction:[UIAlertAction actionWithTitle:@"拍攝" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[weakSelf takePhoto];
}]];
[alertCtrl addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];
[self presentViewController:alertCtrl animated:YES completion:nil];
self.CompleteBlock = [completeBlock copy];
}
// 打開相機
- (void)takePhoto{
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])
{
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (authStatus == AVAuthorizationStatusAuthorized || authStatus == AVAuthorizationStatusNotDetermined) {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
//設置拍照后的圖片可被編輯
picker.allowsEditing = YES;
picker.sourceType = sourceType;
[self presentViewController:picker animated:YES completion:nil];
}
else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"請前往設置開啟拍攝權限" message:@"沒有拍攝權限，無法調用拍照功能" delegate:self cancelButtonTitle:@"不了" otherButtonTitles:@"好的", nil];
alert.tag = 10;
[alert show];
}
}
else
{
}
}
// 打開本地相冊
- (void)localPhoto{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypePhotoLibrary])
{
ALAuthorizationStatus authStatus = [ALAssetsLibrary authorizationStatus];
if (authStatus == ALAuthorizationStatusAuthorized? || authStatus == ALAuthorizationStatusNotDetermined) {
picker.delegate = self;
//設置選擇后的圖片可被編輯
picker.allowsEditing = YES;
[self presentViewController:picker animated:YES completion:nil];
}
else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"請前往設置開啟相冊權限" message:@"沒有相冊權限，無法調用相冊功能" delegate:self cancelButtonTitle:@"不了" otherButtonTitles:@"好的", nil];
alert.tag = 10;
[alert show];
}
}
else{
}
}
//當選擇一張圖片后進入這里
-(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
//當選擇的類型是圖片
if ([type isEqualToString:@"public.image"])
{
//先把圖片轉成NSData
UIImage* image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
NSData *data;
if (UIImageJPEGRepresentation(image,0.3) != nil)
{
data = UIImageJPEGRepresentation(image, 0.3);
}
else
{
data = UIImagePNGRepresentation(image);
}
image = [UIImage imageWithData:data];
UIImage *image1 = [image imageByScalingAndCroppingForSize:CGSizeMake(300, 300)];
//關閉相冊界面
[picker dismissViewControllerAnimated:YES completion:nil];
self.CompleteBlock(image1);
}
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[picker dismissViewControllerAnimated:YES completion:nil];
}
@end
第一次寫簡書，別打那么慘號碼？
