在开发中，我们可能会遇到这样的情况，用户自己关闭了所有的操作权限，以后要使用我们的App,总是得不到想要的结果。这个时候，对用户操作权限的获取，并进行必要的提示就必不可少了。
84B2A9705B046412E1D8F9591830C8FB.png
苹果对用户权限逻辑的修改
在iOS10中，如果你的App想要访问用户的相机、相册、麦克风、通讯录等等权限，都需要进行相关的配置，不然会直接crash（闪退）。
需要在info.plist中添加App需要的一些设备权限。
NSCalendarsUsageDescription
访问日历
NSCameraUsageDescription
访问相机
NSContactsUsageDescription
访问联系人
NSLocationAlwaysUsageDescription
我们需要通过您的地理位置信息获取您周边的相关数据,提供精准服务
NSLocationWhenInUseUsageDescription
我们需要通过您的地理位置信息获取您周边的相关数据,提供精准服务
NSMicrophoneUsageDescription
访问麦克风
NSPhotoLibraryUsageDescription
访问相册
那么在这种情况下，就需要对用户权限的获取状态和逻辑进行修改。下边是我对整个App用户请求权限的封装。代码还是很简单的。
用户权限状态的几种枚举类型
AuthorizationStatusNotDetermined // 用户从未进行过授权等处理，首次访问相应内容会提示用户进行授权
AuthorizationStatusAuthorized = 0, // 用户已授权，允许访问
AuthorizationStatusDenied, // 用户拒绝访问
AuthorizationStatusRestricted, // 应用没有相关权限，且当前用户无法改变这个权限，比如:家长控制
常见的几种可以获取系统权限的对象
typedef NS_ENUM(NSInteger, KSystemPermissions) {
KAVMediaTypeVideo = 0, // 相机
KALAssetsLibrary, //相册
KCLLocationManager, //地理位置信息
KAVAudioSession, //音频
KABAddressBook //手机通讯录
};
大致的思路就是根据 传入的需要获取权限的对象， 弹出响应的提示语，让用户根据需要决定是否去设置中开启相应的权限。
由于代码比较简单，这里就大致提一下，具体可以将Demo 下载下来。
我写的Demo地址： SystemAuthorizationManager。稍后会使用pods的形式，集成到工程中。
//
// SystemPermissionsManager.h
// SystemPermissionsManager
//
// Created by Kenvin on 2016/11/24.
// Copyright © 2016年 上海方创金融股份信息服务有限公司. All rights reserved.
//
#import
typedef NS_ENUM(NSInteger, KSystemPermissions) {
KAVMediaTypeVideo = 0, // 相机
KALAssetsLibrary, //相册
KCLLocationManager, //地理位置信息
KAVAudioSession, //音频
KABAddressBook //手机通讯录
};
@interface SystemPermissionsManager : NSObject
+ (instancetype)sharedManager ;
/**
* 根据场景选择合适的提示系统权限类型
*
* @param systemPermissions 系统权限类型
*
* @return 是否具有权限
*/
- (BOOL)requestAuthorization:(KSystemPermissions)systemPermissions;
@end
//
// SystemPermissionsManager.m
// SystemPermissionsManager
//
// Created by Kenvin on 2016/11/24.
// Copyright © 2016年 上海方创金融股份信息服务有限公司. All rights reserved.
//
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#import
#import
#import "SystemPermissionsManager.h"
#import
#import
#import
#import
#import
#import
#import "BlockAlertView.h"
static NSString *const APPNAME = @""; //填写自己APP NAME
static SystemPermissionsManager *systemPermissionsManager = nil;
@interface SystemPermissionsManager ()
@property(nonatomic,strong) CLLocationManager *locationManager;
@end
@implementation SystemPermissionsManager
+ (instancetype)sharedManager {
static dispatch_once_t onceToken = 0;
dispatch_once(&onceToken, ^{
systemPermissionsManager = [[SystemPermissionsManager alloc] init];
});
return systemPermissionsManager;
}
+ (instancetype)allocWithZone:(struct _NSZone *)zone{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
systemPermissionsManager = [super allocWithZone:zone];
});
return systemPermissionsManager;
}
- (id)init {
self = [super init];
if (self) {
//如果不需要定位的话，请删除与定位相关的代码即可。
[self setup];
}
return self;
}
- (void)setup {
//定位
_locationManager = [[CLLocationManager alloc] init];
_locationManager.delegate = self;
_locationManager.desiredAccuracy = kCLLocationAccuracyBest;
_locationManager.distanceFilter = 1.0;
if([_locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
[_locationManager requestAlwaysAuthorization]; // 永久授权
}
if ([CLLocationManager locationServicesEnabled]) {
if ([[[UIDevice currentDevice] systemVersion] doubleValue] >= 8.0) {
[_locationManager requestAlwaysAuthorization];
}
CLAuthorizationStatus status = CLLocationManager.authorizationStatus;
if (status == kCLAuthorizationStatusRestricted || status == kCLAuthorizationStatusDenied) {
}else{
}
}else{
}
}
-(id)copyWithZone:(struct _NSZone *)zone{
return systemPermissionsManager;
}
- (BOOL)requestAuthorization:(KSystemPermissions)systemPermissions{
switch (systemPermissions) {
case KAVMediaTypeVideo:{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
NSString *mediaType = AVMediaTypeVideo;
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
if(authStatus == ALAuthorizationStatusDenied){
NSString *tips = [NSString stringWithFormat:@"请在iPhone的”设置-隐私-相机“选项中，允许%@访问你的手机相机",APPNAME];
[self executeAlterTips:tips isSupport:YES];
return NO;
}else if(authStatus == ALAuthorizationStatusRestricted ){
[self executeAlterTips:nil isSupport:NO];
return NO;
}else if(authStatus == ALAuthorizationStatusNotDetermined ){
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
if (granted) {
}else{
}
}];
}
}
}
break;
case KALAssetsLibrary:{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
if ([UIDevice currentDevice].systemVersion.floatValue < 8.0) {
ALAuthorizationStatus authStatus = [ALAssetsLibrary authorizationStatus];
if ( authStatus ==ALAuthorizationStatusDenied){
//无权限
NSString *tips = [NSString stringWithFormat:@"请在iPhone的”设置-隐私-相册“选项中，允许%@访问你的手机相册",APPNAME];
[self executeAlterTips:tips isSupport:YES];
return NO;
}else if (authStatus == ALAuthorizationStatusRestricted){
[self executeAlterTips:nil isSupport:NO];
return NO;
}
}else{
PHAuthorizationStatus authorizationStatus = [PHPhotoLibrary authorizationStatus];
if (authorizationStatus == PHAuthorizationStatusRestricted) {
[self executeAlterTips:nil isSupport:NO];
return NO;
}else if(authorizationStatus == PHAuthorizationStatusDenied){
NSString *tips = [NSString stringWithFormat:@"请在iPhone的”设置-隐私-相册“选项中，允许%@访问你的手机相册",APPNAME];
[self executeAlterTips:tips isSupport:YES];
return NO;
}else if (authorizationStatus == PHAuthorizationStatusNotDetermined){
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
}];
}
}
}
}
break;
case KCLLocationManager:{
CLAuthorizationStatus authStatus = CLLocationManager.authorizationStatus;
if ( authStatus == kCLAuthorizationStatusDenied) {
NSString *tips = [NSString stringWithFormat:@"请在iPhone的”设置-隐私-定位“选项中，允许%@访问你的定位",APPNAME];
[self executeAlterTips:tips isSupport:YES];
return NO;
}else if(authStatus == kCLAuthorizationStatusRestricted ){
[self executeAlterTips:nil isSupport:NO];
return NO;
}
}
break;
case KAVAudioSession:{
if (![self canRecord]) {
NSString *tips = [NSString stringWithFormat:@"请在iPhone的”设置-隐私-麦克风“选项中，允许%@访问你的麦克风",APPNAME];
[self executeAlterTips:tips isSupport:YES];
return NO;
}
}
break;
case KABAddressBook:{
ABAuthorizationStatus authStatus = ABAddressBookGetAuthorizationStatus();
NSString *tips = [NSString stringWithFormat:@"请在iPhone的”设置-隐私-联系人“选项中，允许%@访问你的手机通讯录",APPNAME];
if ( authStatus ==kABAuthorizationStatusDenied){
//无权限
[self executeAlterTips:tips isSupport:YES];
return NO;
}else if (authStatus == kABAuthorizationStatusRestricted ){
[self executeAlterTips:nil isSupport:NO];
return NO;
}else if(authStatus == kABAuthorizationStatusNotDetermined){
__block ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);
if (addressBook == NULL) {
[self executeAlterTips:nil isSupport:NO];
return NO;
}
ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
if (granted) {
}else{
}
if (addressBook) {
CFRelease(addressBook);
addressBook = NULL;
}
});
}
}
break;
default:
break;
}
return YES;
}
- (BOOL)canRecord{
__block BOOL bCanRecord = YES;
if ([[UIDevice currentDevice] systemVersion].floatValue > 7.0){
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
if ([audioSession respondsToSelector:@selector(requestRecordPermission:)]) {
[audioSession performSelector:@selector(requestRecordPermission:) withObject:^(BOOL granted) {
if (granted) {
bCanRecord = YES;
} else {
bCanRecord = NO;
}
}];
}
}
return bCanRecord;
}
- (void)executeAlterTips:(NSString *)alterTips isSupport:(BOOL)isSupport{
dispatch_async(dispatch_get_main_queue(), ^{
NSString *alterContent = @"";
if (isSupport) {
alterContent = alterTips;
[BlockAlertView alertWithTitle:alterContent
message:@""
cancelButtonWithTitle:@"取消"
cancelBlock:^{
} confirmButtonWithTitle:@"去设置" confrimBlock:^{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]
options:@{@"url":@""}
completionHandler:^(BOOL success) {
}];
}];
}else{
alterContent = @"权限受限";
[BlockAlertView alertWithTitle:alterContent
message:@""
cancelButtonWithTitle:nil
cancelBlock:^{
} confirmButtonWithTitle:@"确定"
confrimBlock:^{
}];
}
});
}
@end
#pragma clang diagnostic pop
如何使用，方法如下
[[SystemPermissionsManager sharedManager] requestAuthorization:KALAssetsLibrary];