touch-event | 易学教程

Use a custom contextual action bar for WebView text selection

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I have used this guide from Google and this tutorial to produce my own contextual action bar. private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() { // Called when the action mode is created; startActionMode() was called @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { // Inflate a menu resource providing context menu items MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.annotation_menu, menu); return true; } // Called each time the action mode is shown. // Always called after onCreateActionMode, but // may be called

Handling Touch Event in UILabel and hooking it up to an IBAction

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问题 Ok, so I have a UILabel created in interface builder that displays some some default text of \"tap to begin\". When the user taps the UILabel I want it to trigger an IBAction method: -(IBAction)next; which updates the text on the label to say something new. It would be really convenient if this allowed me to simply drag a connection from my method to my label and then select touch up inside, as with a button. but alas, no cigar. so anyways, I guess my question is, am I going to have to

prevent touchstart when swiping

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问题 I have a scrollable list on a mobile device. They want people to be able to scroll the list via swiping, and also select a row by tapping. The catch is combining the two. I don\'t want a row to be selected if you are actually scrolling the list. Here\'s what I\'ve found: Doesn\'t trigger when scrolling: click mouseup Does trigger when scrolling: mousedown touchstart touchend The simple solution is to just stick with the click event. But what we\'re finding is that on certain blackberry

how to programmatically fake a touch event to a UIButton?

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问题 I\'m writing some unit tests and, because of the nature of this particular app, it\'s important that I get as high up the UI chain as possible. So, what I\'d like to do is programmatically trigger a button-press, as if the user had pressed the button in the GUI . (Yes, yes -- I could just call the IBAction selector but, again, the nature of this particular app makes it important that I fake the actual button press, such that the IBAction be called from the button, itself.) What\'s the

How to distinguish between move and click in onTouchEvent()?

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问题 In my application, I need to handle both move and click events. A click is a sequence of one ACTION_DOWN action, several ACTION_MOVE actions and one ACTION_UP action. In theory, if you get an ACTION_DOWN event and then an ACTION_UP event - it means that the user has just clicked your View. But in practice, this sequence doesn\'t work on some devices. On my Samsung Galaxy Gio I get such sequences when just clicking my View: ACTION_DOWN, several times ACTION_MOVE, then ACTION_UP. I.e. I get

Android overlay to grab ALL touch, and pass them on?

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问题 I\'m basically trying to get all touch event data from something like a system overlay, move my sprites around based on this touch data, then allow the OS/homescreen/browser to act upon the data as it should(or vice versa). I have found similar questions, but nothing that leads me anywhere I haven\'t already been: Getting the View that is receiving all the touch events (Implemented, with results below) Creating a system overlay window (always on top) What I can do: I can EITHER grab ALL the

Use a custom contextual action bar for WebView text selection

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问题 I have used this guide from Google and this tutorial to produce my own contextual action bar. private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() { // Called when the action mode is created; startActionMode() was called @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { // Inflate a menu resource providing context menu items MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.annotation_menu, menu); return true; } // Called