[iOS 系统]系统音频.相册.相机 权限判断

自己写的demo
留下以供自己回顾

需要添加的库

#import <AudioToolbox/AudioToolbox.h>#import <AVFoundation/AVFoundation.h>#import <AssetsLibrary/AssetsLibrary.h>

.m文件实现

#import "ViewController.h"#import <AudioToolbox/AudioToolbox.h>#import <AVFoundation/AVFoundation.h>#import <AssetsLibrary/AssetsLibrary.h>#define SoundID 1317@interface ViewController (){}@property (weak, nonatomic) IBOutlet UITextField *soundtextfiled;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    for (UIView *v in self.view.subviews) {        if ([v isKindOfClass:[UITextField class]]) {            UITextField *t = (UITextField*)v;            [t resignFirstResponder];        }    }}// 点击发出系统音- (IBAction)sound:(id)sender {    AudioServicesPlaySystemSound([_soundtextfiled.text intValue]);}// 点击触发系统震- (IBAction)vibration:(id)sender {    AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);}//点击检测相机权限- (IBAction)camera:(id)sender {    //ios7之前系统默认拥有权限    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {        AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];        if (authStatus == AVAuthorizationStatusDenied) {            _soundtextfiled.placeholder = @"您还未为本App开通相机权限";        }else{            _soundtextfiled.placeholder = @"本App拥有相机开启权限";        }    }}// 点击检测相册权限- (IBAction)photo:(id)sender {    //iOS8 以下系统默认有权限    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8) {        ALAuthorizationStatus authStates = [ALAssetsLibrary authorizationStatus];        if ( authStates ==  ALAuthorizationStatusDenied) {            _soundtextfiled.placeholder = @"您没有访问相册的权限";        }        else{            _soundtextfiled.placeholder = @"您拥有访问相册的权限";        }    }}@end