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copied!<p>This works with your MapActivity and will allow you to:</p> <ol> <li>Set your own time threshold for what constitutes a long press on the map (0.8 seconds is good for me). </li> <li>Not interpret a scroll, multi-touch, or non-multi-touch event as a long press. It also let's you set a tolerance for someone's finger to ever so slightly move on the screen as they are holding down a long press. </li> </ol> <hr> <p>This solution is based on <a href="http://www.kind-kristiansen.no/2011/android-handling-longpresslongclick-on-map-revisited/" rel="nofollow">Roger Kristiansen's solution</a>. I added x and y point detection so that scrolling is not seen as a long press. This solution is not as elegant as Roger's because I use class variables and put the code in my existing MapActivity instead of extending MapView and creating a listener like he did. But if you want to stick with his code but have better non-multi-touch support, just take the x and y point stuff out of mine and add it to his.</p> <hr> <p>Class variables set at the top of my MapActivity:</p> <pre><code>//variable for determining long press and then automatically adding a pin to the map private int minMillisecondThresholdForLongClick = 800; private long startTimeForLongClick = 0; private float xScreenCoordinateForLongClick; private float yScreenCoordinateForLongClick; private float xtolerance=10;//x pixels that your finger can be off but still constitute a long press private float ytolerance=10;//y pixels that your finger can be off but still constitute a long press private float xlow; //actual screen coordinate when you subtract the tolerance private float xhigh; //actual screen coordinate when you add the tolerance private float ylow; //actual screen coordinate when you subtract the tolerance private float yhigh; //actual screen coordinate when you add the tolerance </code></pre> <p>Add this function in your MapActivity:</p> <pre><code> @Override public boolean dispatchTouchEvent(MotionEvent ev) { /* We want to capture the place the user long pressed on the map and add a marker (pin) on the map at that lat/long. * This solution: * 1. Allows you to set the time threshold for what constitutes a long press * 2. Doesn't get fooled by scrolling, multi-touch, or non-multi-touch events * Thank you Roger Kind Kristiansen for the main idea */ //get the action from the MotionEvent: down, move, or up int actionType = ev.getAction(); if (actionType == MotionEvent.ACTION_DOWN) { //user pressed the button down so let's initialize the main variables that we care about: // later on when the "Action Up" event fires, the "DownTime" should match the "startTimeForLongClick" that we set here // the coordinate on the screen should not change much during the long press startTimeForLongClick=ev.getEventTime(); xScreenCoordinateForLongClick=ev.getX(); yScreenCoordinateForLongClick=ev.getY(); } else if (actionType == MotionEvent.ACTION_MOVE) { //For non-long press actions, the move action can happen a lot between ACTION_DOWN and ACTION_UP if (ev.getPointerCount()>1) { //easiest way to detect a multi-touch even is if the pointer count is greater than 1 //next thing to look at is if the x and y coordinates of the person's finger change. startTimeForLongClick=0; //instead of a timer, just reset this class variable and in our ACTION_UP event, the DownTime value will not match and so we can reset. } else { //I know that I am getting to the same action as above, startTimeForLongClick=0, but I want the processor //to quickly skip over this step if it detects the pointer count > 1 above float xmove = ev.getX(); //where is their finger now? float ymove = ev.getY(); //these next four values allow you set a tiny box around their finger in case //they don't perfectly keep their finger still on a long click. xlow = xScreenCoordinateForLongClick - xtolerance; xhigh= xScreenCoordinateForLongClick + xtolerance; ylow = yScreenCoordinateForLongClick - ytolerance; yhigh= yScreenCoordinateForLongClick + ytolerance; if ((xmove<xlow || xmove> xhigh) || (ymove<ylow || ymove> yhigh)){ //out of the range of an acceptable long press, reset the whole process startTimeForLongClick=0; } } } else if (actionType == MotionEvent.ACTION_UP) { //determine if this was a long click: long eventTime = ev.getEventTime(); long downTime = ev.getDownTime(); //this value will match the startTimeForLongClick variable as long as we didn't reset the startTimeForLongClick variable because we detected nonsense that invalidated a long press in the ACTION_MOVE block //make sure the start time for the original "down event" is the same as this event's "downTime" if (startTimeForLongClick==downTime){ //see if the event time minus the start time is within the threshold if ((eventTime-startTimeForLongClick)>minMillisecondThresholdForLongClick){ //make sure we are at the same spot where we started the long click float xup = ev.getX(); float yup = ev.getY(); //I don't want the overhead of a function call: xlow = xScreenCoordinateForLongClick - xtolerance; xhigh= xScreenCoordinateForLongClick + xtolerance; ylow = yScreenCoordinateForLongClick - ytolerance; yhigh= yScreenCoordinateForLongClick + ytolerance; if ((xup>xlow && xup<xhigh) && (yup>ylow && yup<yhigh)){ //**** safe to process your code for an actual long press **** //comment out these next rows after you confirm in logcat that the long press works long totaltime=eventTime-startTimeForLongClick; String strtotaltime=Long.toString(totaltime); Log.d("long press detected: ", strtotaltime); /* //Now get the latitude/longitude of where you clicked. Replace all the code below if you already know how to translate a screen coordinate to lat/long. I know it works though. //***************** //I have my map under a tab so I have to account for the tab height and the notification bar at the top of the phone. // Maybe there are other ways so just ignore this if you already know how to get the lat/long of the pixels that were pressed. int TabHeightAdjustmentPixels=tabHost.getTabWidget().getChildAt(0).getLayoutParams().height; int EntireTabViewHeight = tabHost.getHeight(); Display display = getWindowManager().getDefaultDisplay(); int EntireScreenHeight = display.getHeight(); int NotificationBarHeight=EntireScreenHeight-EntireTabViewHeight; //the projection is mapping pixels to where you touch on the screen. Projection proj = mapView.getProjection(); GeoPoint loc = proj.fromPixels((int)(ev.getX(ev.getPointerCount()-1)), (int)(ev.getY(ev.getPointerCount()-1)-TabHeightAdjustmentPixels-NotificationBarHeight)); int longitude=loc.getLongitudeE6(); int latitude=loc.getLatitudeE6(); //***************** //**** here's where you add code to: // put a marker on the map, save the point to your SQLite database, etc */ } } } } return super.dispatchTouchEvent(ev); } </code></pre>

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