iPhone相册、相机权限是个老生常谈的话题,最近项目种涉及到了权限及提示跳转,下面是整理的一些资料。
环境:
编译器:Xcode 9.2
iPhone:10.3.3、11.2.1
1、添加权限
<key>NSCameraUsageDescription</key>
<string>上传个人头像会使用相机功能</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>上传个人头像会使用相册功能</string>
2、判断权限
// 相机权限 需要导入#import <AVFoundation/AVCaptureDevice.h>
AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (status == AVAuthorizationStatusRestricted || status == AVAuthorizationStatusDenied){// 指引开启
[self.view alertController:self title:nil message:@"请在iPhone的“设置-隐私-相机”选项中,允许访问你的相机" sureTitle:@"好的" cancelTitle:@"设置" sureHandler:^(UIAlertAction * _Nonnull action) {
} cancelHandler:^(UIAlertAction * _Nonnull action) {
}
// 相册权限 需要导入#import <Photos/PHPhotoLibrary.h>
PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
if (status == PHAuthorizationStatusRestricted || status == PHAuthorizationStatusDenied){
[self.view alertController:self title:nil message:@"请在iPhone的“设置-隐私-照片”选项中,允许访问你的相册" sureTitle:@"好的" cancelTitle:@"设置" sureHandler:^(UIAlertAction * _Nonnull action) {
} cancelHandler:^(UIAlertAction * _Nonnull action) {
}
3、跳转设置界面
有3种跳转的方式
方式一:prefs:root=某项服务
方式二:prefs:root=bundleID
方式三: UIApplicationOpenSettingsURLString
前两项用openURL,返回error,网上找了很多方法(比如:设置URL Scheme),都不成功;后来发现iOS 10可以这样设置:
NSURL *url = [NSURL URLWithString:@"App-Prefs:root=bundle id"];
if ([[UIApplication sharedApplication] canOpenURL:url]) {
[[UIApplication sharedApplication] openURL:url];
}
还有一种:(貌似审核过不了)
NSURL *url = [NSURL URLWithString:@"Prefs:root=bundle id"];
Class LSApplicationWorkspace = NSClassFromString(@"LSApplicationWorkspace");
[[LSApplicationWorkspace performSelector:@selector(defaultWorkspace)] performSelector:@selector(openSensitiveURL:withOptions:) withObject:url withObject:nil];
iOS 11,用下面的方法:
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
注:经测试,有些机器系统10.3.3用 UIApplicationOpenSettingsURLString 可以进入app权限设置,有些不可以。。。
相关资料:
https://www.jianshu.com/p/4ae5189be228
https://stackoverflow.com/questions/39782510/open-wifi-settings-by-prefsroot-wifi-failed-in-ios-10
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