Is there any way to do a popup menu that is activated by a process within the program, such as the JPopupMenu class of Swing? All I can find in the android literature is an options menu that can only be activated开发者_开发问答 by pressing a menu button, and the context menu that can only be activated by a long press.
You can use a TranslateAnimation
Maybe this is also helpful: http://developerlife.com/tutorials/?p=343
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It seems to me Apple won\'t allow this, but I need to make sure. For an app we\'re building, we want to ask the user to enter payment information (including credit card details) to pay for tickets. T
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是否在对方手机上显示已读，是由用户自行设置的。依次打开iPhone的“设置-信息”，会有一个“发送已读回执”的选项。将其打开，对方就能看到你，是否已经阅读了本条iMessage信息。将其关闭，对方就看不到。
微信重新建群怎么开发者_Go百科建？ 产品名称：苹果手机 产品型号：iPhone 11 系统版本：iOS 13
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