作者：Jack_lin
链接：https://www.jianshu.com/p/27e57922232b
APP开发避免不开系统权限的问题，如何在APP以更加友好的方式向用户展示系统权限，似乎也是开发过程中值得深思的一件事；
那如何提高APP获取iOS系统权限的通过率呢？有以下几种方式:
1.在用户打开APP时就向用户请求权限；
2.告知用户授权权限后能够获得好处之后，再向用户请求权限；
3.在绝对必要的情况下才向用户请求权限，例如：用户访问照片库时请求访问系统相册权限；
4.在展示系统权限的对话框前，先向用户显示自定义的对话框，若用户选择不允许，默认无操作，若用户选择允许，再展示系统对话框。
上述情况在开发过程中是经常遇到的，不同方式的选择会影响最后用户交互体验。这一点感悟正是源于上一周工作遇到的问题：适配iOS10，如何获取应用联网权限用以管理系统对话框的显示管理。当我把这个问题解决后，感觉有必要将常用的iOS系统权限做一个总结，以便后用。
联网权限
相册权限
相机、麦克风权限
定位权限
推送权限
通讯录权限
日历、备忘录权限
引入头文件 @import CoreTelephony;
应用启动后，检测应用中是否有联网权限
CTCellularData *cellularData = [[CTCellularData alloc]init];
cellularData.cellularDataRestrictionDidUpdateNotifier = ^(CTCellularDataRestrictedState state){
//获取联网状态
switch (state) {
case kCTCellularDataRestricted:
NSLog(@"Restricrted");
break;
case kCTCellularDataNotRestricted:
NSLog(@"Not Restricted");
break;
case kCTCellularDataRestrictedStateUnknown:
NSLog(@"Unknown");
break;
default:
break;
};
};
查询应用是否有联网功能
CTCellularData *cellularData = [[CTCellularData alloc]init];
CTCellularDataRestrictedState state = cellularData.restrictedState;
switch (state) {
case kCTCellularDataRestricted:
NSLog(@"Restricrted");
break;
case kCTCellularDataNotRestricted:
NSLog(@"Not Restricted");
break;
case kCTCellularDataRestrictedStateUnknown:
NSLog(@"Unknown");
break;
default:
break;
}
导入头文件@import AssetsLibrary;
检查是否有相册权限
ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];
switch (status) {
case ALAuthorizationStatusAuthorized:
NSLog(@"Authorized");
break;
case ALAuthorizationStatusDenied:
NSLog(@"Denied");
break;
case ALAuthorizationStatusNotDetermined:
NSLog(@"not Determined");
break;
case ALAuthorizationStatusRestricted:
NSLog(@"Restricted");
break;
default:
break;
}
导入头文件@import Photos;
检查是否有相册权限
PHAuthorizationStatus photoAuthorStatus = [PHPhotoLibrary authorizationStatus];
switch (photoAuthorStatus) {
case PHAuthorizationStatusAuthorized:
NSLog(@"Authorized");
break;
case PHAuthorizationStatusDenied:
NSLog(@"Denied");
break;
case PHAuthorizationStatusNotDetermined:
NSLog(@"not Determined");
break;
case PHAuthorizationStatusRestricted:
NSLog(@"Restricted");
break;
default:
break;
}
![Uploading 144446-b8aca7ba38c5f8c0_695906.png . . .]获取相册权限
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
if (status == PHAuthorizationStatusAuthorized) {
NSLog(@"Authorized");
}else{
NSLog(@"Denied or Restricted");
}
}];
导入头文件@import AVFoundation;
检查是否有相机或麦克风权限
AVAuthorizationStatus AVstatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];//相机权限
AVAuthorizationStatus AVstatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];//麦克风权限
switch (AVstatus) {
case AVAuthorizationStatusAuthorized:
NSLog(@"Authorized");
break;
case AVAuthorizationStatusDenied:
NSLog(@"Denied");
break;
case AVAuthorizationStatusNotDetermined:
NSLog(@"not Determined");
break;
case AVAuthorizationStatusRestricted:
NSLog(@"Restricted");
break;
default:
break;
}
获取相机或麦克风权限
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {//相机权限
if (granted) {
NSLog(@"Authorized");
}else{
NSLog(@"Denied or Restricted");
}
}];
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {//麦克风权限
if (granted) {
NSLog(@"Authorized");
}else{
NSLog(@"Denied or Restricted");
}
}];
