we know iOS system notification alert methods commonly used pop-up window or in a circular background of the icon displayed on the figures, and in iOS5, notification alerts are improvements to the taskbar, when the system receives a new notification ( .For example, SMS, Twitter replies, etc.), the taskbar becomes two lines high, in the following line shows the number and content of the notice, the following is a spy, after tonight we will be able to see more .exciting picture:

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