SemiClosedSlidingDrawer onClick not dispatched when semi-collapsed - android

i'm using a SemiClosedSlidingDrawer (http://pastebin.com/FtVyrcEb) and i've added on content part some buttons on the top of slider which are always visibles.
The problems is that they are clickable (or click event is dispatched) only when slider is fully opened... When slider is "semi-opened" click event not seems dispached to button... I have inspected with debugger into onInterceptTouchEvent() and in both cases (opened/semi-collapsed) the following code
#Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if (mLocked) {
return false;
}
final int action = event.getAction();
float x = event.getX();
float y = event.getY();
final Rect frame = mFrame;
final View handle = mHandle;
handle.getHitRect(frame);
//FOLLOWING THE CRITICAL CODE
if (!mTracking && !frame.contains((int) x, (int) y)) {
return false;
}
return false but only when slider is opened event was dispached...
It checks if a (x,y) relative to the click are contained in a rectangle created starting from the HandleButton view of sliding drawer...
final Rect frame = mFrame;
final View handle = mHandle;
handle.getHitRect(frame);
and this is obviously false because i'm clicking on a button contained inside the content part of slidingdrawer and that's ok...
As i said above the problem is that in semi-collapsed state, buttons contained in content part are not receiving the event...
Have you any idea how can i solve this issue?
Can be some state of slidingdrawer that avoid to click childs when collapsed?
Thanks in advance...

Right, I think I've figured out a way to do this.
First you need to modify onInterceptTouchEvent() to return true whenever the user presses the visible content during the semi-opened state. So, for instance, if your SemiClosedSlidingDrawer view is located at the very bottom of the screen, you can use a simple detection algorithm, like this:
public boolean onInterceptTouchEvent(MotionEvent event) {
...
handle.getHitRect(frame);
// NEW: Check if the user pressed on the "semi-open" content (below the handle):
if(!mTracking && (y >= frame.bottom) && action == MotionEvent.ACTION_DOWN) {
return true;
}
if (!mTracking && !frame.contains((int) x, (int) y)) {
...
}
Now the touch events during the user's interaction with the semi-opened content will be dispatched to onTouchEvent(). Now we just need to intercept these events and "manually" redirect them to the right view (note that we also need to offset the coordinates for the child view):
public boolean onTouchEvent(MotionEvent event) {
...
if (mTracking) {
...
}
else
{
// NEW: Dispatch events to the "semi-open" view:
final Rect frame = mFrame;
final View handle = mHandle;
handle.getHitRect(frame);
float x = event.getX();
float y = event.getY() - frame.bottom;
MotionEvent newEvent = MotionEvent.obtain(event);
newEvent.setLocation(x, y);
return mContent.dispatchTouchEvent(newEvent);
}
return mTracking || mAnimating || super.onTouchEvent(event);
}
It's a bit of a messy implementation, but I think the basic concept is right. Let me know how it works for you!

Related

Android: Only make certain part of custom view be clickable

I have a custom view, assume it looks like this:
I would like for my custom view to respond to the onClicks, however the catch is that I would like it to respond to the clicks ONLY on the red portion/circle. Not the whole view.
Is it possible to make to make the text above and the grey portion not clickable?
Thank you.
In a custom view, you handle clicks by overriding the onTouchEvent method of android's View class. First check that the location the user has clicked is within the circle. Then normally you would give some feedback on the MotionEvent.ACTION_DOWN event to let user know they have clicked, such as highlight the circle. Then on MotionEvent.ACTION_UP you can call your onClick method.
#Override
public boolean onTouchEvent(MotionEvent event) {
boolean isTouchInCircle = checkTouchInCircle(event.getX(), event.getY());
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (isTouchInCircle) {
circleColor = highlightColor;
invalidate();
}
break;
case MotionEvent.ACTION_MOVE:
if (isTouchInCircle) {
circleColor = highlightColor;
} else {
circleColor = normalColor
}
invalidate();
break;
case MotionEvent.ACTION_UP:
if (isTouchInCircle) {
onClickCircle();
}
break;
}
return true;
}
// Circle click zone approximated as a square
private boolean checkTouchInCircle(float touchX, float touchY) {
if (touchX < circleCenterX + circleRadius
&& touchX > circleCenterX - circleRadius
&& touchY < circleCenterY + circleRadius
&& touchY > circleCenterY - circleRadius) {
return true;
} else {
return false;
}
}
Unfortunately the answer Carson posted was not exactly what I was looking for as my example was only a simple one, with the reality sometimes it being a lot more difficult and checking the touch locations would be convoluted (imagine multiple views/shapes within the custom view being the click locations).
What I did was in the custom view do a find view by id on the elements of the custom view. Then I did setOnClickListener(this) on each element that I would like to be clicked able rather than on the whole view itself, so mCircle.setOnClickListener(this); and mInput.setOnClickListener(this);, then did implements View.OnClickListener for the custom view to handle the actions.

Implement feature like iOS app closing vertical Swipe-to-Dismiss with ViewPager

I currently have Views lined up horizontally in a ViewPager and can cycle through them with a PagerAdapter. Currently, to perform the action that I would like to do on swipe, I have to do a double-tap on the View's page. I could post code, but it's somewhat difficult to extract the necessary pieces...
What I would like is the ability to swipe vertically on these views, have them translate vertically with swipe and fade-out, and then perform an action when they reach a certain distance away from the edge of the device.
To get an idea of what I am thinking, in the Gallery app you can pinch an opened photo to zoom-out and open a horizontal filmstrip view. From there you can swipe up (or down) on a photo/video to delete it. For those who do not have the same Gallery app, it's exactly like closing applications on iOS.
I've tried scanning though the source code for the Gallery app, but no luck finding the correct Activity.
view.setOnTouchListener(new View.OnTouchListener(){
public boolean onTouch(View v, MotionEvent motion) {
float y = motion.getY();
/* NOTE: the following line might need to be in runOnUiThread() */
view.animate().alpha(1-Math.abs(y-height/2)/(height/2)).setDuration(50).start();
return true; //false if you want to pass this event on to other listeners
}
});
The explanation for using 1-Math.abs(y-height/2)/(height/2) is that I want alpha to be 1 when I am in the center, and alpha to be 0 when it is at the top or bottom. You have to determine yourself how you obtain the height value, or if you want to use a different method to calculate alpha. If you want to get the touch position relative to the screen instead of the position relative to the view, use getRawY().
Additionally, it may be useful for you to know that to see if the MotionEvent is a press, drag, or release event, use
motion.getAction() == with MotionEvent.ACTION_UP, MotionEvent.ACTION_MOVE, and MotionEvent.ACTION_DOWN, respectively.
I ended up getting this working more-or-less by cloning the well-written Android-SwipeToDismiss library and just replacing the ListView code with a ViewPager.
The finished product looked like this.
Check the below code, this may helpful to you:
public class MainActivity extends Activity implements View.OnTouchListener{
private RelativeLayout baseLayout;
private int previousFingerPosition = 0;
private int baseLayoutPosition = 0;
private int defaultViewHeight;
private boolean isClosing = false;
private boolean isScrollingUp = false;
private boolean isScrollingDown = false;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_popup);
baseLayout = (RelativeLayout) findViewById(R.id.base_popup_layout);//this is the main layout
baseLayout.setOnTouchListener(this);
}
public boolean onTouch(View view, MotionEvent event) {
// Get finger position on screen
final int Y = (int) event.getRawY();
// Switch on motion event type
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
// save default base layout height
defaultViewHeight = baseLayout.getHeight();
// Init finger and view position
previousFingerPosition = Y;
baseLayoutPosition = (int) baseLayout.getY();
break;
case MotionEvent.ACTION_UP:
// If user was doing a scroll up
if(isScrollingUp){
// Reset baselayout position
baseLayout.setY(0);
// We are not in scrolling up mode anymore
isScrollingUp = false;
}
// If user was doing a scroll down
if(isScrollingDown){
// Reset baselayout position
baseLayout.setY(0);
// Reset base layout size
baseLayout.getLayoutParams().height = defaultViewHeight;
baseLayout.requestLayout();
// We are not in scrolling down mode anymore
isScrollingDown = false;
}
break;
case MotionEvent.ACTION_MOVE:
if(!isClosing){
int currentYPosition = (int) baseLayout.getY();
// If we scroll up
if(previousFingerPosition >Y){
// First time android rise an event for "up" move
if(!isScrollingUp){
isScrollingUp = true;
}
// Has user scroll down before -> view is smaller than it's default size -> resize it instead of change it position
if(baseLayout.getHeight()<defaultViewHeight){
baseLayout.getLayoutParams().height = baseLayout.getHeight() - (Y - previousFingerPosition);
baseLayout.requestLayout();
}
else {
// Has user scroll enough to "auto close" popup ?
if ((baseLayoutPosition - currentYPosition) > defaultViewHeight / 4) {
closeUpAndDismissDialog(currentYPosition);
return true;
}
//
}
baseLayout.setY(baseLayout.getY() + (Y - previousFingerPosition));
}
// If we scroll down
else{
// First time android rise an event for "down" move
if(!isScrollingDown){
isScrollingDown = true;
}
// Has user scroll enough to "auto close" popup ?
if (Math.abs(baseLayoutPosition - currentYPosition) > defaultViewHeight / 2)
{
closeDownAndDismissDialog(currentYPosition);
return true;
}
// Change base layout size and position (must change position because view anchor is top left corner)
baseLayout.setY(baseLayout.getY() + (Y - previousFingerPosition));
baseLayout.getLayoutParams().height = baseLayout.getHeight() - (Y - previousFingerPosition);
baseLayout.requestLayout();
}
// Update position
previousFingerPosition = Y;
}
break;
}
return true;
}
}
For animation use the below methods:
public void closeUpAndDismissDialog(int currentPosition){
isClosing = true;
ObjectAnimator positionAnimator = ObjectAnimator.ofFloat(baseLayout, "y", currentPosition, -baseLayout.getHeight());
positionAnimator.setDuration(300);
positionAnimator.addListener(new Animator.AnimatorListener()
{
. . .
#Override
public void onAnimationEnd(Animator animator)
{
finish();
}
. . .
});
positionAnimator.start();
}
public void closeDownAndDismissDialog(int currentPosition){
isClosing = true;
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int screenHeight = size.y;
ObjectAnimator positionAnimator = ObjectAnimator.ofFloat(baseLayout, "y", currentPosition, screenHeight+baseLayout.getHeight());
positionAnimator.setDuration(300);
positionAnimator.addListener(new Animator.AnimatorListener()
{
. . .
#Override
public void onAnimationEnd(Animator animator)
{
finish();
}
. . .
});
positionAnimator.start();
}

Check if Android WebView is consuming touch events

TL;DR
How can I detect whether Android WebView consumed a touch event? onTouchEvent always returns true and WebViewClient's onUnhandledInputEvent is never triggered.
Detailed description
I have multiple WebViews inside a TwoDScrollView. As its name suggests, the TwoDScrollView can be scrolled both vertically and horizontally. The contents of TwoDScrollView can be zoomed in / out. When the user drags his finger or uses pinch-to-zoom, I want to dispatch the touch event to:
WebView if its content is scrollable / zoomable (i.e. only the inside of the WebView will scroll / zoom)
TwoDScrollView if the above condition is false (all contents of the TwoDScrollView will scroll / zoom)
I have partially achieved this by using the canScrollHorizontally and canScrollVertically methods. But these methods only work for "native scrolling". However, in some cases, some JavaScript inside the WebView consumes the touch event, for example Google Maps. In this case, the methods return false. Is there any way to find out whether the WebView's contents consumes the touch events, i.e. is scrollable / zoomable? I cannot change the contents of the WebView, therefore my question is different from this one.
I have considered checking touch handlers by executing some JavaScript inside the Webview by the evaluateJavaScript method, but according to this answer there is no easy way to achieve this and also the page can have some other nested iframes. Any help will be appreciated.
What I've already tried
I overrode WebView's onTouchEvent and read super.onTouchEvent() which always returns true, no matter what.
canScrollHorizontally and canScrollVertically only partially solve this problem, as mentioned above
onScrollChanged isn't useful either
WebViewClient.onUnhandledInputEvent is never triggered
I considered using JavaScript via evaluateJavaScript, but it is a very complicated and ugly solution
I tried to trace the MotionEvent by Debug.startMethodTracing. I found out it is propagated as follows:
android.webkit.WebView.onTouchEvent
com.android.webview.chromium.WebViewChromium.onTouchEvent
com.android.org.chromium.android_webview.AwContents.onTouchEvent
com.android.org.chromium.android_webview.AwContents$AwViewMethodsImpl.onTouchEvent
com.android.org.chromium.content.browser.ContentViewCore.onTouchEventImpl
According to ContentViewCore's source code the touch event ends up in a native method nativeOnTouchEvent and I don't know what further happens with it. Anyway, onTouchEvent always returns true and even if it was possible to find out somewhere whether the event was consumed or not, it would require using private methods which is also quite ugly.
Note
I don't need to know how to intercept touch events sent to WebView, but whether the WebView is consuming them, i.e. is using them for doing anything, such as scrolling, dragging etc.
According to this issue report, not possible.
If the web code is under your control, you can implement some JavaScriptInterface to workaround this. If not, I am afraid there is no solution here.
You can pass all touch events to GestureDetector by overriding onTouchEvent of WebView, so you can know when Android WebView is consuming touch events anywhere, anytime by listening to GestureDetector.
Try like this:
public class MyWebView extends WebView {
private Context context;
private GestureDetector gestDetector;
public MyWebView(Context context) {
super(context);
this.context = context;
gestDetector = new GestureDetector(context, gestListener);
}
#Override
public boolean onTouchEvent(MotionEvent event) {
return gd.onTouchEvent(event);
}
GestureDetector.SimpleOnGestureListener gestListener= new GestureDetector.SimpleOnGestureListener() {
public boolean onDown(MotionEvent event) {
return true;
}
public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) {
//if (event1.getRawX() > event2.getRawX()) {
// show_toast("swipe left");
//} else {
// show_toast("swipe right");
//}
//you can trace any touch events here
return true;
}
};
void show_toast(final String text) {
Toast t = Toast.makeText(context, text, Toast.LENGTH_SHORT);
t.show();
}
}
I hope you be inspired.
This code will handle your scrolling events in a webview. This catch the click down and the click up events, and compares the positions of each one. It never minds that the content within the webview is scrollable, just compare the coordinates in the area of webview.
public class MainActivity extends Activity implements View.OnTouchListener, Handler.Callback {
private float x1,x2,y1,y2; //x1, y1 is the start of the event, x2, y2 is the end.
static final int MIN_DISTANCE = 150; //min distance for a scroll event
private static final int CLICK_ON_WEBVIEW = 1;
private static final int CLICK_ON_URL = 2;
private static final int UP_ON_WEBVIEW = 3;
private final Handler handler = new Handler(this);
public WebView webView;
private WebViewClient client;
private WebAppInterface webAppInt = new WebAppInterface(this);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView)findViewById(R.id.myWebView);
webView.setOnTouchListener(this);
client = new WebViewClient();
webView.setWebViewClient(client);
webView.loadDataWithBaseURL("file:///android_asset/", "myweb.html", "text/html", "UTF-8", "");
}
//HERE START THE IMPORTANT PART
#Override
public boolean onTouch(View v, MotionEvent event) {
if (v.getId() == R.id.myWebView && event.getAction() == MotionEvent.ACTION_DOWN){
x1 = event.getX();
y1 = event.getY();
handler.sendEmptyMessageDelayed(CLICK_ON_WEBVIEW, 200);
} else if (v.getId() == R.id.myWebView && event.getAction() == MotionEvent.ACTION_UP){
x2 = event.getX();
y2 = event.getY();
handler.sendEmptyMessageDelayed(UP_ON_WEBVIEW, 200);
}
return false;
}
#Override
public boolean handleMessage(Message msg) {
if (msg.what == CLICK_ON_URL){ //if you clic a link in the webview, thats not a scroll
handler.removeMessages(CLICK_ON_WEBVIEW);
handler.removeMessages(UP_ON_WEBVIEW);
return true;
}
if (msg.what == CLICK_ON_WEBVIEW){
//Handle the click in the webview
Toast.makeText(this, "WebView clicked", Toast.LENGTH_SHORT).show();
return true;
}
if (msg.what == UP_ON_WEBVIEW){
float deltaX = x2 - x1; //horizontal move distance
float deltaY = y2 - y1; //vertical move distance
if ((Math.abs(deltaX) > MIN_DISTANCE) && (Math.abs(deltaX) > Math.abs(deltaY)))
{
// Left to Right swipe action
if (x2 > x1)
{
//Handle the left to right swipe
Toast.makeText(this, "Left to Right swipe", Toast.LENGTH_SHORT).show ();
}
// Right to left swipe action
else
{
//Handle the right to left swipe
Toast.makeText(this, "Right to Left swipe", Toast.LENGTH_SHORT).show ();
}
}
else if ((Math.abs(deltaY) > MIN_DISTANCE) && (Math.abs(deltaY) > Math.abs(deltaX)))
{
// Top to Bottom swipe action
if (y2 > y1)
{
//Handle the top to bottom swipe
Toast.makeText(this, "Top to Bottom swipe", Toast.LENGTH_SHORT).show ();
}
// Bottom to top swipe action -- I HIDE MY ACTIONBAR ON SCROLLUP
else
{
getActionBar().hide();
Toast.makeText(this, "Bottom to Top swipe [Hide Bar]", Toast.LENGTH_SHORT).show ();
}
}
return true;
}
return false;
}
}
You can also try to control the speed of the swipe, to detect it as a real swipe or scrolling.
I hope that helps you.
Try to set the android:isClickable="true" in the XML and create an onClickListener in the Java code.
Actually now Touch Actions are not supported for webview. But some workarounds are available;
I am going to show it with a longpress example : I am using Pointoption because i will get the coordinate of element and will use it for longpress.
public void longpress(PointOption po) {
//first you need to switch to native view
driver.switchToNativeView();
TouchAction action = new TouchAction((PerformsTouchActions) driver);
action.longPress(po).waitAction(WaitOptions.waitOptions(Duration.ofSeconds(2)));
action.release();
action.perform();
driver.switchToDefaultWebView();
}
For to get the coordinate of element i designed below methood
public PointOption getElementLocation(WebElement element) {
int elementLocationX;
int elementLocationY;
//get element location in webview
elementLocationX = element.getLocation().getX();
elementLocationY = element.getLocation().getY();
//get the center location of the element
int elementWidthCenter = element.getSize().getWidth() / 2;
int elementHeightCenter = element.getSize().getHeight() / 2;
int elementWidthCenterLocation = elementWidthCenter + elementLocationX;
int elementHeightCenterLocation = elementHeightCenter + elementLocationY;
//calculate the ratio between actual screen dimensions and webview dimensions
float ratioWidth = device.getDeviceScreenWidth() / ((MobileDevice) device)
.getWebViewWidth().intValue();
float ratioHeight = device.getDeviceScreenHeight() / ((MobileDevice) device)
.getWebViewHeight().intValue();
//calculate the actual element location on the screen , if needed you can increase this value,for example i used 115 for one of my mobile devices.
int offset = 0;
float elementCenterActualX = elementWidthCenterLocation * ratioWidth;
float elementCenterActualY = (elementHeightCenterLocation * ratioHeight) + offset;
float[] elementLocation = {elementCenterActualX, elementCenterActualY};
int elementCoordinateX, elementCoordinateY;
elementCoordinateX = (int) Math.round(elementCenterActualX);
elementCoordinateY = (int) Math.round(elementCenterActualY);
PointOption po = PointOption.point(elementCoordinateX, elementCoordinateY);
return po;
}
now you have a longpress(PointOption po) and getElementLocation(Webelement element) methods that gives you po. Now everything is ready and you can use them as below..
longpress(getElementLocation(driver.findElement(By.id("the selector can be any of them(xpath,css,classname,id etc.)")));

How to enable tap listener in view pager in Android?

I am using view pager to swipe between the views in Android.
Now I need to capture tap event for each of the views. when I override the touch listener to capture the tap event, the swipe action doesn't happen and the screen remains in the first page itself. How do I add touch listener to view pager?
Code:
viewPager.setOnTouchListener(new OnTouchListener(){
#Override
public boolean onTouch(View v, MotionEvent event)
{
mDetector.onTouchEvent(event);
return true;
}});
For the above code I am able to capture tap event, but the swipe action becomes Impossible.
Here i leave you a snippet from my code to detect a "click" on the OnTouchListener, i hope it helps
mImagePager.setOnTouchListener(new OnTouchListener() {
private float pointX;
private float pointY;
private int tolerance = 50;
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_MOVE:
return false; //This is important, if you return TRUE the action of swipe will not take place.
case MotionEvent.ACTION_DOWN:
pointX = event.getX();
pointY = event.getY();
break;
case MotionEvent.ACTION_UP:
boolean sameX = pointX + tolerance > event.getX() && pointX - tolerance < event.getX();
boolean sameY = pointY + tolerance > event.getY() && pointY - tolerance < event.getY();
if(sameX && sameY){
//The user "clicked" certain point in the screen or just returned to the same position an raised the finger
}
}
return false;
}
});
We can use Gestures (Link1, Link2):
public boolean onTouchEvent (MotionEvent ev)
Hope this helps!
Nancy, you don't need to manually override the Page swipes or the touch events. Just add the pages to the ViewPager and the ViewPager will automatically take care of swiping.
You do, however, have to attach touch listeners to the object in each page. So if Page 1 has a Linear Layout with many buttons and you need to find out when those buttons are clicked, you need to attach OnClickListeners for each of those buttons.
Do let me know your use case so we can better understand, why you need to find out when a page has been clicked!
Just to add to Jorge's great answer, you may just use distance instead of sameX and sameY, which is a bit more elegant. Sample:
// Ignore events that are swipes rather then touches
float distX = event.getX() - pointX;
float distY = event.getY() - pointX;
double dist = Math.sqrt(distX * distX + distY * distY);
if (dist > tolerance) {
return false;
}
Put the click event on the item view of the viewpager inside the viewPagerAdapter in the method instantiateItem like -
#Override
public Object instantiateItem(ViewGroup container, final int position) {
// Declare Variables
ImageView jive_image;
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView = inflater.inflate(R.layout.list_item_viewpager, container,
false);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
onBackPressed();
}
});
// Add viewpager_item.xml to ViewPager
((ViewPager) container).addView(itemView);
return itemView;
}

Android Gallery Flipping issue

I have a Gallery of views that contain a TextView Label and then a listview below that. It works excellent except that in order to get it to flip from element to element, the user has to touch either above the listview (near the label) and fling or in between gallery objects. Sometimes below the listview works too.But I really want to be able to fling while touching the listview too because it takes up a majority of the screen. How can this be done? What code do you need to see?
I had a similar problem and solved this by overriding the Gallery and implementing the onInterceptTouchEvent to ensure that move events are intercepted by the Gallery, and all other events are handled normally.
Returning true in the onInterceptTouchEvent causes all following touch events in this touch sequence to be sent to this view, false leaves the event for it's children.
TouchSlop is needed as when doing a click there is sometimes a small amount of movement.
Would love to claim this as my own idea, but got the basics of the code from the default Android Launcher code.
public class MyGallery extends Gallery{
private MotionEvent downEvent;
private int touchSlop;
private float lastMotionY;
private float lastMotionX;
public MyGallery(Context context) {
super(context);
initTouchSlop();
}
private void initTouchSlop() {
final ViewConfiguration configuration = ViewConfiguration.get(getContext());
touchSlop = configuration.getScaledTouchSlop();
}
#Override public boolean onInterceptTouchEvent(MotionEvent ev) {
final float x = ev.getX();
final float y = ev.getY();
switch (ev.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_MOVE: {
final int xDiff = (int) Math.abs(x - lastMotionX);
final int yDiff = (int) Math.abs(y - lastMotionY);
// have we moved enough to consider this a scroll
if (xDiff > touchSlop || yDiff > touchSlop) {
// this is the event we want, but we need to resend the Down event as this could have been consumed by a child
Log.d(TAG, "Move event detected: Start intercepting touch events");
if (downEvent != null) this.onTouchEvent(downEvent);
downEvent = null;
return true;
}
return false;
}
case MotionEvent.ACTION_DOWN: {
// need to save the on down event incase this is going to be a scroll
downEvent = MotionEvent.obtain(ev);
lastMotionX = x;
lastMotionY = y;
return false;
}
default: {
// if this is not a down or scroll event then it is not for us
downEvent = null;
return false;
}
}
}
You would want to set the onTouchListener() on the listview, or maybe the entire Linear/Relative layout.
getListView().setOnTouchListener(yourlistener) OR set it on the entire layout. If you post a little code, I could help you further. XML and how you are using in with the Java class would be most helpful.

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