iOS 常见错误(持续更新)

问题：Unbalanced calls to begin/end appearance transitions for
解决：
如果是自定义的UITabBarController需要加入以下方法

#pragma mark - view周期
-(void)viewWillAppear:(BOOL)animated
{
    [self.selectedViewController beginAppearanceTransition: YES animated: animated]; 
}

-(void) viewDidAppear:(BOOL)animated
{
    [self.selectedViewController endAppearanceTransition];
}

-(void) viewWillDisappear:(BOOL)animated
{
    [self.selectedViewController beginAppearanceTransition: NO animated: animated];
}

-(void) viewDidDisappear:(BOOL)animated
{
    [self.selectedViewController endAppearanceTransition];
}

问题：subsystem: com.apple.UIKit, category: Touch, enable_level: 0, persist_level: 0, default_ttl: 1, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 1, privacy_setting: 2, enable_private_data: 0
解决：

添加键值为：OS_ACTIVITY_MODE
Value值为：disable

问题：Xcode8之后访问相册、相机、位置、麦克风、蓝牙等权限
解决：

NSBluetoothPeripheralUsageDescription
访问蓝牙

NSCalendarsUsageDescription
访问日历

NSCameraUsageDescription
相机

NSPhotoLibraryUsageDescription
相册

NSContactsUsageDescription
通讯录

NSLocationAlwaysUsageDescription
始终访问位置

NSLocationUsageDescription
位置

NSLocationWhenInUseUsageDescription
在使用期间访问位置

NSMicrophoneUsageDescription
麦克风

NSAppleMusicUsageDescription
访问媒体资料库

NSHealthShareUsageDescription
访问健康分享

NSHealthUpdateUsageDescription
访问健康更新

NSMotionUsageDescription
访问运动与健身

NSRemindersUsageDescription
访问提醒事项


问题：Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates.

解决：将跳转的相机VC属性设置成
picker.modalPresentationStyle = UIModalPresentationOverCurrentContext;

问题：[MC] Reading from public effective user settings.

解决：设置权限的plist需要给一个描述