1.问题描述
1.访问相机和相册的时候，如果用户拒绝访问，则进入显示系统的页面，想改里面的导航拦右边的取消按钮的颜色
2.初次下载app时相机和相册的访问权限的设置操作（注意分为：根据状态来判断 || 根据允许和不允许的操作回调来判断）
2.解决
- 改变颜色
[[UINavigationBar appearance] setBarTintColor: [UToColor whiteColor]];
[[UINavigationBar appearance] setTintColor:[UToColor blackColor]];
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UToColor blackColor],NSFontAttributeName:[UToFont defaultAdaptationFontWithSize:16.0]}];
- 权限设置问题
1.根据按钮的回调方法来判断:(即用户还没有点击过允许和不允许，现在进行点击来获取相应展示)
// 相机
[_selectHeadImgView camerBtnClick:^(UIButton *sender){// 相机
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {//相机权限
if (granted) {
UIImagePickerController *imagePickerVC = [[UIImagePickerController alloc] init];
imagePickerVC.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerVC.modalPresentationStyle = UIModalPresentationCurrentContext;
[[UINavigationBar appearance] setBarTintColor: [UToColor whiteColor]];
[[UINavigationBar appearance] setTintColor:[UToColor blackColor]];
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UToColor blackColor],NSFontAttributeName:[UToFont defaultAdaptationFontWithSize:16.0]}];
imagePickerVC.allowsEditing = YES;
imagePickerVC.delegate = self;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self presentViewController:imagePickerVC animated:YES completion:NULL];
});
} else {
UToAlert *aler =[UToAlert AlertTitle:@"无法使用相机" content:@"请在iPhone的“设置-隐私-相机”中允许访问相机。" cancelButton:@"" okButton:@"确定" complete:nil];
[aler showAlertWithController:self];
}
}];
}
}];
// 相册
[_selectHeadImgView photoBtnClick:^(UIButton *sender){// 照片
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
if (status == PHAuthorizationStatusAuthorized) {
} else {
}
UIImagePickerController * imagePickerVC = [[UIImagePickerController alloc]init];
imagePickerVC.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[[UINavigationBar appearance] setBarTintColor: [UToColor whiteColor]];
[[UINavigationBar appearance] setTintColor:[UToColor blackColor]];
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UToColor blackColor],NSFontAttributeName:[UToFont defaultAdaptationFontWithSize:16.0]}];
imagePickerVC.allowsEditing = YES;
imagePickerVC.modalPresentationStyle = UIModalPresentationCurrentContext;
imagePickerVC.delegate = self;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self presentViewController:imagePickerVC animated:YES completion:NULL];
});
}];
}
}];
2.根据状态来判断：(即用户已经做过允许与不允许的操作之后，再根据这个用户的反馈状态来判断展示)
屏幕快照 2017-11-06 下午5.15.06.png
屏幕快照 2017-11-06 下午5.15.46.png
屏幕快照 2017-11-06 下午5.15.24.png
屏幕快照 2017-11-06 下午5.15.36.png
3.访问相机、相册的普通用法
3.1 先引入头文件
#import
#import
3.2 引入协议
UIImagePickerControllerDelegate,
UINavigationControllerDelegate,
UIActionSheetDelegate
3.3 例如创建一个上传更改头像的按钮
_headBtn = [[UIButton alloc]init];
[self.view addSubview:_headBtn];
[_headBtn setTitle:@"点击上传" forState:0];
_headBtn.titleLabel.font = [UToFont defaultAdaptationFontWithSize:12];
_headBtn.backgroundColor = [UToColor orangeColor];
[_headBtn addTarget:self action:@selector(changeheadImgClicked:) forControlEvents:UIControlEventTouchUpInside];
[_headBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.mas_equalTo(15);
make.centerX.mas_equalTo(_topBgView);
make.width.height.mas_equalTo(60);
}];
[_headBtn layoutIfNeeded];
_headBtn.layer.cornerRadius = 30;
_headBtn.layer.masksToBounds = YES;
3.4 选择照片/相机的回调
// 选择头像回调
- (void)changeheadImgClicked:(UIButton *)sender {
_selectHeadImgView = [[UToSelectHeadImgView alloc]init];// 弹框的视图
[self.view.window addSubview:_selectHeadImgView];
[_selectHeadImgView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.mas_equalTo(0);
make.right.mas_equalTo(0);
make.top.mas_equalTo(0);
make.bottom.mas_equalTo(0);
}];
[_selectHeadImgView camerBtnClick:^(UIButton *sender){// 相机
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {//相机权限
if (granted) {
UIImagePickerController *imagePickerVC = [[UIImagePickerController alloc] init];
imagePickerVC.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerVC.modalPresentationStyle = UIModalPresentationCurrentContext;
[[UINavigationBar appearance] setBarTintColor: [UToColor whiteColor]];
[[UINavigationBar appearance] setTintColor:[UToColor blackColor]];
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UToColor blackColor],NSFontAttributeName:[UToFont defaultFontWithSize:18.0]}];
imagePickerVC.allowsEditing = YES;
imagePickerVC.delegate = self;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self presentViewController:imagePickerVC animated:YES completion:NULL];
});
} else {
UToAlert *aler =[UToAlert AlertTitle:@"无法使用相机" content:@"请在iPhone的“设置-隐私-相机”中允许访问相机。" cancelButton:nil okButton:@"确定" complete:nil];
[aler showAlertWithController:self];
}
}];
}
}];
[_selectHeadImgView photoBtnClick:^(UIButton *sender){// 照片
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
if (status == PHAuthorizationStatusAuthorized) {
} else {
}
UIImagePickerController * imagePickerVC = [[UIImagePickerController alloc]init];
imagePickerVC.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[[UINavigationBar appearance] setBarTintColor: [UToColor whiteColor]];
[[UINavigationBar appearance] setTintColor:[UToColor blackColor]];
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UToColor blackColor],NSFontAttributeName:[UToFont defaultFontWithSize:18.0]}];
imagePickerVC.allowsEditing = YES;
imagePickerVC.modalPresentationStyle = UIModalPresentationCurrentContext;
imagePickerVC.delegate = self;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self presentViewController:imagePickerVC animated:YES completion:NULL];
});
}];
}
}];
}
3.5 选完照片回调
// 选完照片回调
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissViewControllerAnimated:YES completion:nil];
if ([info[UIImagePickerControllerMediaType]isEqualToString:(NSString *)kUTTypeImage]) {
UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
// UToImageDataModel * model = [[UToImageDataModel alloc]initWithUToRequestType:UToRequestTypeClientPhotoAlter parmeter:nil];
// model.data = UIImageJPEGRepresentation(image, 0.1);
// [self.netWork request:model userToken:[UToUser sharedUToUser].token Identifier:AlterPhotoInfoIdentifier];
// _headImgView.image = image;
[_headBtn setImage:image forState:0];
// [self.hud hideAnimated:NO];
// self.hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
// self.hud.mode = MBProgressHUDModeDeterminateHorizontalBar;
// self.hud.delegate = self;
// self.hud.label.text = NSLocalizedStringEx(@"LOADING", nil);
}
}
3.6 其他相关
- (UIImage *)fixOrientation:(UIImage *)aImage {
// No-op if the orientation is already correct
if (aImage.imageOrientation == UIImageOrientationUp)
return aImage;
// We need to calculate the proper transformation to make the image upright.
// We do it in 2 steps: Rotate if Left/Right/Down, and then flip if Mirrored.
CGAffineTransform transform = CGAffineTransformIdentity;
switch (aImage.imageOrientation) {
case UIImageOrientationDown:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.width, aImage.size.height);
transform = CGAffineTransformRotate(transform, M_PI);
break;
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.width, 0);
transform = CGAffineTransformRotate(transform, M_PI_2);
break;
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, 0, aImage.size.height);
transform = CGAffineTransformRotate(transform, -M_PI_2);
break;
default:
break;
}
switch (aImage.imageOrientation) {
case UIImageOrientationUpMirrored:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.width, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
case UIImageOrientationLeftMirrored:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.height, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
default:
break;
}
// Now we draw the underlying CGImage into a new context, applying the transform
// calculated above.
CGContextRef ctx = CGBitmapContextCreate(NULL, aImage.size.width, aImage.size.height,
CGImageGetBitsPerComponent(aImage.CGImage), 0,
CGImageGetColorSpace(aImage.CGImage),
CGImageGetBitmapInfo(aImage.CGImage));
CGContextConcatCTM(ctx, transform);
switch (aImage.imageOrientation) {
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
// Grr...
CGContextDrawImage(ctx, CGRectMake(0,0,aImage.size.height,aImage.size.width), aImage.CGImage);
break;
default:
CGContextDrawImage(ctx, CGRectMake(0,0,aImage.size.width,aImage.size.height), aImage.CGImage);
break;
}
// And now we just create a new UIImage from the drawing context
CGImageRef cgimg = CGBitmapContextCreateImage(ctx);
UIImage *img = [UIImage imageWithCGImage:cgimg];
CGContextRelease(ctx);
CGImageRelease(cgimg);
return img;
}
- (void)viewDidLoad {
[super viewDidLoad];
[self resetNavgationBarTitle:@"个人资料"];
self.view.backgroundColor = [UToColor backGrayColor];
// 头像上传成功通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(userUpdateComplete) name:UToUpdateInfoSuccessNotification object:nil];
}
// 头像上传成功的通知回调
- (void)userUpdateComplete {
[_headImgView sd_setImageWithURL:[NSURL URLWithString:[UToUser sharedUToUser].avatarPath] placeholderImage:[UIImage imageNamed:@"pople"] options:SDWebImageRetryFailed];
[_personMessageTableView reloadData];
}