話不多說，應該都是大家經常使用的功能，就總結了下，分享給朋友們，希望多提寶貴意見
1.通過相機和從相片中選擇設置頭像
//MARK:通過相機和從相片中選擇設置頭像
//彈出提示框，選擇獲取頭像的方式
//從相冊獲取圖片
- (void)takePictureClick:(UIButton *)sender
{
// /*注：使用，需要實現以下協議：UIImagePickerControllerDelegate,
// UINavigationControllerDelegate
// */
// UIImagePickerController *picker = [[UIImagePickerController alloc]init];
// //設置圖片源(相簿)
// picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
// //設置代理
// picker.delegate = self;
// //設置可以編輯
// picker.allowsEditing = YES;
// //打開拾取器界面
// [self presentViewController:picker animated:YES completion:nil];
UIActionSheet* actionSheet = [[UIActionSheetalloc]
initWithTitle:@"請選擇文件來源"
delegate:self
cancelButtonTitle:@"取消"
destructiveButtonTitle:nil
otherButtonTitles:@"照相機",@"攝像機",@"本地相簿",@"本地視頻",nil];
[actionSheet showInView:self.view];
}
#pragma 點擊按鈕選擇選取圖片的方法
- (void)actionclickedButtonAtIndex:(NSInteger)buttonIndex
{
NSLog(@"buttonIndex = [%ld]",(long)buttonIndex);
switch (buttonIndex) {
case0://照相機
{
UIImagePickerController *imagePicker = [[UIImagePickerControlleralloc] init];
imagePicker.delegate =self;
imagePicker.allowsEditing =YES;
imagePicker.sourceType =UIImagePickerControllerSourceTypeCamera;
// [self presentModalViewController:imagePicker animated:YES];
[selfpresentViewController:imagePickeranimated:YEScompletion:nil];
}
break;
case1://攝像機
{
UIImagePickerController *imagePicker = [[UIImagePickerControlleralloc] init];
imagePicker.delegate =self;
imagePicker.allowsEditing =YES;
imagePicker.sourceType =UIImagePickerControllerSourceTypeCamera;
imagePicker.videoQuality =UIImagePickerControllerQualityTypeLow;
// [self presentModalViewController:imagePicker animated:YES];
[selfpresentViewController:imagePickeranimated:YEScompletion:nil];
}
break;
case2://本地相簿
{
UIImagePickerController *imagePicker = [[UIImagePickerControlleralloc] init];
imagePicker.delegate =self;
imagePicker.allowsEditing =YES;
imagePicker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
// [self presentModalViewController:imagePicker animated:YES];
[selfpresentViewController:imagePickeranimated:YEScompletion:nil];
}
break;
case3://本地視頻
{
UIImagePickerController *imagePicker = [[UIImagePickerControlleralloc] init];
imagePicker.delegate =self;
imagePicker.allowsEditing =YES;
imagePicker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
// [self presentModalViewController:imagePicker animated:YES];
[selfpresentViewController:imagePickeranimated:YEScompletion:nil];
}
break;
default:
break;
}
}
#pragma mark -
#pragma UIImagePickerController Delegate方法
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(__bridge NSString *)kTTypeImage]) {
UIImage *img = [infoobjectForKey:UIImagePickerControllerEditedImage];
[selfperformSelector:@selector(saveImage:) withObject:img afterDelay:0.5];
}
elseif ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(__bridge NSString *)kUTTypeMovie]) {
NSString *videoPath = [[infoobjectForKey:UIImagePickerControllerMediaURL]path];
self.fileData = [NSData dataWithContentsOfFile:videoPath];
}
// [picker dismissModalViewControllerAnimated:YES];
[picker dismissViewControllerAnimated:YEScompletion:nil];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
// [picker dismissModalViewControllerAnimated:YES];
[picker dismissViewControllerAnimated:YEScompletion:nil];
}
- (void)saveImage:(UIImage *)image {
// NSLog(@"保存頭像！");
// [userPhotoButton setImage:image forState:UIControlStateNormal];
BOOL success;
NSFileManager *fileManager = [NSFileManagerdefaultManager];
NSError *error;
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [pathsobjectAtIndex:0];
NSString *imageFilePath = [documentsDirectorystringByAppendingPathComponent:@"selfPhoto.jpg"];
NSLog(@"imageFile->>%@",imageFilePath);
success = [fileManager fileExistsAtPath:imageFilePath];
if(success) {
success = [fileManager removeItemAtPath:imageFilePatherror:&error];
}
// UIImage *smallImage=[self scaleFromImage:image toSize:CGSizeMake(80.0f, 80.0f)];//將圖片尺寸改爲80*80
UIImage *smallImage = [selfthumbnailWithImageWithoutScale:imagesize:CGSizeMake(93,93)];
[UIImageJPEGRepresentation(smallImage,1.0f) writeToFile:imageFilePathatomically:YES];//寫入文件
UIImage *selfPhoto = [UIImageimageWithContentsOfFile:imageFilePath];//讀取圖片文件
// [userPhotoButton setImage:selfPhoto forState:UIControlStateNormal];
self.imv.image = selfPhoto;
}
// 改變圖像的尺寸，方便上傳服務器
- (UIImage *) scaleFromImage: (UIImage *) image toSize: (CGSize) size
{
UIGraphicsBeginImageContext(size);
[image drawInRect:CGRectMake(0,0, size.width, size.height)];
UIImage *newImage =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
//MARK: 2.保持原始圖片的長寬比，生成需要尺寸的圖片
//2.保持原來的長寬比，生成一個縮略圖
- (UIImage *)thumbnailWithImageWithoutScale:(UIImage *)image size:(CGSize)asize
{
UIImage *newimage;
if (nil == image) {
newimage = nil;
}
else{
CGSize oldsize = image.size;
CGRect rect;
if (asize.width/asize.height > oldsize.width/oldsize.height) {
rect.size.width = asize.height*oldsize.width/oldsize.height;
rect.size.height = asize.height;
rect.origin.x = (asize.width - rect.size.width)/2;
rect.origin.y =0;
}
else{
rect.size.width = asize.width;
rect.size.height = asize.width*oldsize.height/oldsize.width;
rect.origin.x =0;
rect.origin.y = (asize.height - rect.size.height)/2;
}
UIGraphicsBeginImageContext(asize);
CGContextRef context =UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [[UIColorclearColor] CGColor]);
UIRectFill(CGRectMake(0,0, asize.width, asize.height));//clear background
[image drawInRect:rect];
newimage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
return newimage;
}
//MARK:3.顯示圓形頭像
- (void)showRound{
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [pathsobjectAtIndex:0];
NSString *imageFilePath = [documentsDirectorystringByAppendingPathComponent:@"selfPhoto.jpg"];
NSLog(@"imageFile->>%@",imageFilePath);
UIImage *selfPhoto = [UIImageimageWithContentsOfFile:imageFilePath];
self.imv.image = selfPhoto;
[self.imv.layersetCornerRadius:CGRectGetHeight([self.imvbounds]) / 2]; //修改半徑，實現頭像的圓形化
self.imv.layer.masksToBounds = YES;
}