Android UI Design

The example "macOS Sierra - Apps" shows usage of built-in app icons in Apple macOS operating system user interface (UI) design.
"The apps built into every Mac let you explore the world, connect with people, and work more efficiently. In OS X Yosemite, your apps have a simpler, more elegant look." [apple.com/ osx/ better-apps/ ]
The graphic user interface (GUI) example "macOS Sierra - Apps" was created using the ConceptDraw PRO software extended with the macOS User Interface solution from the Software Development area of ConceptDraw Solution Park.

The vector stencils library "Messages" contains 10 Message dialog elements.
Use this notification dialog UI icon set to design graphic user interface (GUI) of your Windows 8 software application.
"A message dialog is an overlay UI element that provides a stable and contextual surface that is always modal and explicitly dismissed. Message dialogs appear at a consistent location on the screen. ...
Error messages that apply to the overall app context use message dialogs. ...
- Use message dialogs to convey urgent information that the user must see and acknowledge before continuing. ...
- Use message dialogs to present blocking questions that require the user's input. A blocking question is a question where the application cannot make a choice on the user's behalf, and cannot continue to fulfill it's value proposition to the user. A blocking question should present clear choices to the user. It is not a question that can be ignored or postponed.
- Use message dialogs to ask for explicit action from the user or to deliver a message that is important for the user to acknowledge. ...
- Use custom dialogs when the app or the system must invest a significant amount of time in the ensuing actions such that an accidental dismiss would be detrimental to the user's confidence.
- All dialogs should clearly identify the user's objective in the first line of the dialog's text (with or without a title).
- Don't use message dialogs when the app needs to confirm the user's intention for an action that the user has taken. Instead, a flyout is the appropriate surface. ...
- Don't use message dialogs for errors that are contextual to a specific place on the page, such as validation errors (in password fields, for example), use the app's canvas itself to show inline errors." [msdn.microsoft.com/ en-us/ library/ windows/ apps/ hh738363.aspx]
The notification dialogs example "Messages - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Windows 8 User Interface solution from the Software Development area of ConceptDraw Solution Park.

The vector stencils library "Yosemite Apps" contains 20 OS X Yosemite user interface (UI) app icons.
Use these software application shortcuts to design graphic user interface (GUI) of your app for Mac OS X 10.10.
"Make a great first impression with a beautiful app icon. Your app icon is the first experience users have with your app, and it can have a marked effect on their expectations. Think of your app icon as your calling card, and spend the resources necessary to ensure that it makes the right impression on users. Decide whether your app is best represented by a realistic or graphic style icon." [developer.apple.com/ library/ mac/ documentation/ UserExperience/ Conceptual/ OSXHIGuidelines/ IconsGraphics.html#/ / apple_ ref/ doc/ uid/ 20000957-CH14-SW1]
The app icons example "Design elements - Yosemite Apps" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mac OS User Interface solution from the Software Development area of ConceptDraw Solution Park.

The vector stencils library "Android system icons - notification" contains 34 system icons of notifications.
Use this icon set to design user interface of your Android application.
The icons example "Design elements - Android system icons (notification)" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the "Android 5 UI" solution from the "Software Development" area of ConceptDraw Solution Park.