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For much of your time developing with Xamarin.Mac, you can think, read, and write in C# without much concern with the underlying Objective-C APIs. However, sometimes you’ll need to read the API documentation from Apple, translate an answer from Stack Overflow to a solution for your problem, or compare to an existing sample.
Reading enough Objective-C to be dangerous
Sometimes it will be necessary to read an Objective-C definition or method call and translate that to the equivalent C# method. Let’s take a look at an Objective-C function definition and break down the pieces. This method (a selector in Objective-C) can be found on
NSTableView
:Permission reset mac app. The declaration can be read left to right:
- The
-
prefix means it is an instance (non-static) method. + means it is a class (static) method (BOOL)
is the return type (bool in C#)canDragRowsWithIndexes
is the first part of the name.(NSIndexSet *)rowIndexes
is the first param and with it’s type. The first parameter is in the format:(Type) paramName
atPoint:(NSPoint)mouseDownPoint
is the second param and its type. Every parameter after the first is the format:selectorPart:(Type) paramName
- The full name of this message selector is:
canDragRowsWithIndexes:atPoint:
. Note the:
at the end - it is important. - The actual Xamarin.Mac C# binding is:
bool CanDragRows (NSIndexSet rowIndexes, PointF mouseDownPoint)
This selector invocation can be read the same way: How to url import in mac excel app 2019 2020.
- The instance
v
is having itscanDragRowsWithIndexes:atPoint
selector called with two parameters,set
andpoint
, passed in. - In C#, The method invocation looks like this:
v.CanDragRows (set, point);
Finding the C# member for a given selector
Now that you’ve found the Objective-C selector you need to invoke, the next step is mapping that to the equivalent C# member. There are four approaches you can try (continuing with the
NSTableView CanDragRows
example):![Api documentation tools Api documentation tools](https://beego.me/docs/images/docs.png)
- Use the auto completion list to quickly scan for something of the same name. Since we know it is an instance of
NSTableView
you can type: https://oebrzkk.weebly.com/blog/the-best-diary-app-for-mac.NSTableView x;
x.
[ctrl+space if the list does not appear).CanDrag
[enter]- Right-click the method, go to declaration to open the Assembly Browser where you can compare the
Export
attribute to the selector in question
- Search the entire class binding. Since we know it is an instance of
NSTableView
you can type:NSTableView x;
- Right-click
NSTableView
, go to declaration to Assembly Browser - Search for the selector in question
- You can use the Xamarin.Mac API online documentation .
- Miguel provides a 'Rosetta Stone' view of the Xamarin.Mac APIs here that you can search through for a given API. If your API is not AppKit or macOS specific, you may find it there.
Apps Empowering Consumers to Manage Medications, Diseases, Nutrition and More Coming This Fall
Today Apple delivered a Health Records API for developers and researchers to create an ecosystem of apps that use health record data to better manage medications, nutrition plans, diagnosed diseases and more. The Health Records feature allows patients of more than 500 hospitals and clinics to access medical information from various institutions organized into one view on their iPhone. For the first time, consumers will be able to share medical records from multiple hospitals with their favorite trusted apps, helping them improve their overall health.
“Medical information may be the most important personal information to a consumer, and offering access to Health Records was the first step in empowering them. Now, with the potential of Health Records information paired with HealthKit data, patients are on the path to receiving a holistic view of their health,” said Jeff Williams, Apple’s chief operating officer. “With the Health Records API open to our incredible community of developers and researchers, consumers can personalize their health needs with the apps they use every day.”
Health Records data is encrypted on iPhone and protected with the consumer’s iPhone passcode. When consumers choose to share their health record data with trusted apps, the data flows directly from HealthKit to the third-party app and is not sent to Apple’s servers.
Developers building health apps can individualize experiences, with the user’s permission, based on the user’s unique health history across key categories, including:
Medication Tracking: Medisafe, a medication management app, will connect with the Health Records feature so consumers can easily import their prescription list without manual entry, quickly enabling pill reminders and allowing the user to receive relevant medication information. Medisafe will be able to warn patients of problematic drug-drug interactions because they have the comprehensive view of the patient’s exact medication list from several hospitals and clinics.
Disease Management: A diabetes app could access a patient’s lab results from their Health Records as well as their diet and exercise details through the existing iOS HealthKit integration, allowing for a more complete picture of the consumer and the best ways to encourage them to stay on track.
Nutrition Planning: A healthy eating app could offer consumers tailored programs based on their high blood pressure or cholesterol results by serving up low salt or high fiber meal plans.
Medical Research: With the new Health Records API, doctors can integrate patient medical data into their ResearchKit study apps for a more complete view of their participants’ health background. Traditionally, researchers used arduous survey questionnaires to determine pre-existing conditions, which puts the burden on the patient to remember the details. Now, with the participants’ approval, researchers can access that patient-specific information to ensure more comprehensive research. This integration continues Apple’s commitment to providing the medical community with ResearchKit tools that could further their discoveries.
Images of Health Records https://oebrzkk.weebly.com/blog/best-mac-rdp-app.
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