I have a dialog to choose files from. This dialog contains a listview to show directories and files and has an onItemClickListener for navigation purposes.
How can I react to fling events to go up in the directory structure? I tried setting an OnTouchListener on the root RelativeLayout to dispatches touch events to my GestureListener:
final GestureDetector detector = new GestureDetector(new MyGestureDetector(tvCurrentPath));
dialog.findViewById(R.id.rlFilelist).setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View view, MotionEvent e) {
detector.onTouchEvent(e);
return false;
}
});
The events get registered in onTouch(), but the onFling() method is never called in the MyGestureDetector. If, however, I attach the OnTouchListener to the listview, it works as expected. The problem with this approach is that the listview is not always filled extensively with data and when it is empty or when clicking below items, no onTouch() events are triggered.
Dialog layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/rlFilelist"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:focusable="true" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#+id/llButtons" >
<TextView
android:id="#+id/tvCurrentPath"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:layout_marginRight="10dip" >
</TextView>
<ListView
android:id="#+id/lvFileListing"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="#id/llButtons"
android:layout_below="#id/tvCurrentPath" >
</ListView>
</RelativeLayout>
<RelativeLayout
android:id="#+id/llButtons"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip" >
<Button
android:id="#+id/btAddDirectory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginRight="10px"
android:text="#string/host_tv_dg_add_directory" />
<Button
android:id="#+id/btUp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10px"
android:layout_toRightOf="#id/btAddDirectory"
android:text="#string/host_tv_dg_navigate_up" />
<Button
android:id="#+id/btClose"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/btUp"
android:text="#string/_tv_close" />
</RelativeLayout>
</RelativeLayout>
Screenshot for dialog with not completely filled lisview:
http://imageshack.us/photo/my-images/802/dialog.png/
How can I make the onFling() events trigger on the whole dialog or on the "whole" listview even when it's not completely filled with items?
Thank you!
You should create a class which extends the dialog class and then you can create a gesture detector and attach to the ontouchevent of the class.
Here is a code example:
public class GestureDialog extends Dialog {
public GestureDialog (Context context, int theme) {
super(context, theme);
gestDetec = new MyGestureDetector(); //inital setup
gestureDetector = new GestureDetector(gestDetec);
gestureListener = new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
return true;
}
return false;
}
};
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (gestureDetector.onTouchEvent(event))
return true;
else
return false;
}
class MyGestureDetector extends SimpleOnGestureListener {
#Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
System.out.println( "Help im being touched!" );
return false;
}
}
}
You can Take one activity and set it's theme in manifest to dialog.
Then implements onTouchListener to that activty
and write one onTouch() event in that Activity.
Now you got Touch event for entire dialog :)
Related
I have a custom view and EditText element in my relative layout, i can't receive touch events in my custom view, how can i propagate touch events to my custom view;
My layout looks like ;
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white" >
<com.test.ui.CustomView
android:id="#+id/noteView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<EditText
android:id="#+id/etPageInput"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="top" />
</RelativeLayout>
I add touch listener to my EditText and Custom view as like ;
EditText pageInput = (EditText) findViewById(R.id.etPageInput);
pageInput.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
return false;
}
});
CustomView pageView = (CustomView) findViewById(R.id.noteView);
pageView.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
System.out.println("Touch event received by custom view !!!")
return true;
}
});
I'm not able to receive touch events in my CustomView, any idea what am i missing ?
try to set clickable as true in xml for your custom view
and
try to setonclicklisener
create a custom view for color picker that contains image and I'm going to take a color from this image on touch bot neither onTouch(View v, MotionEvent ev) nor onClick(View v) is called.
So here is my view class:
public class ChangeColor extends RelativeLayout {
public ChangeColor(Context context) { super(context); init(); }
public ChangeColor(Context context, AttributeSet attrs) { super(context, attrs); init(); }
private void init(){
LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.change_color, this);
}
#Override
protected void onFinishInflate() {
super.onFinishInflate();
ImageView iv = (ImageView)findViewById(R.id.colorScaleImageView);
final Bitmap bitmap = ((BitmapDrawable) iv.getDrawable()).getBitmap();
iv.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d("ImageView", "onClick();");
}
});
iv.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent ev) {
Log.d("ChangeColor", "onTouch();");
switch (ev.getAction()){
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
int c = bitmap.getPixel((int)ev.getX(), (int)ev.getY());
SettingsManager.setColor(c);
Log.d("ChangeColor", "" + c);
return false;
default:
return true;
}
}
});
}
}
and layout xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/colorScaleImageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/seekBar1"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:clickable="true"
android:layout_gravity="center_horizontal"
android:src="#drawable/background_color" />
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/textView1"
android:layout_alignParentLeft="true"
android:focusable="false"
android:maxHeight="8dp"
android:minHeight="8dp"
android:paddingLeft="7dp"
android:paddingRight="7dp"
android:progressDrawable="#drawable/seekbar_progress"
android:thumb="#drawable/seekbar_thumb_"
android:thumbOffset="7dp" />
</RelativeLayout>
So no one log message appear in LogCat.
P.S. I saw few similar questions on SO but they did not helped me.
P.P.S. This view is used in fragment and fragment is used in Activity. I added a fullscreen view in that activity with OnClickListener in order to see if clicks go to the parent view and I can see Log message from that background view only I tap outside the image and no message if I tap on image.
Thanks.
You have extended the relative layout but are not calling it in this example.
In the XML you should implement the class you developed instead of RelativeLayout
try
<?xml version="1.0" encoding="utf-8"?>
<**namespace**.ChangeColor xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/colorScaleImageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/seekBar1"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:clickable="true"
android:layout_gravity="center_horizontal"
android:src="#drawable/background_color" />
</**namespace**.ChangeColor>
**EDIT
It was correct the first time. To implement it you'll have to attach ChangeColor to another layout, it cannot be called in the layout that it is attempting to inflate when it's called. Ex. ChangeColor inflates change_color.xml, you cannot have the tag NAMESPACE.ChangeColor called in the layout that ChangeColor.init() is inflating.
I have frame layout:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp" >
<LinearLayout
android:id="#+id/widgetView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="10dp"
android:gravity="center" >
</LinearLayout>
<LinearLayout
android:id="#+id/widgetOverlayFrame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="false" >
</LinearLayout>
First layout contains widget layout, and second one is transparent and receives onLongClick for dragging method.That works, the problem is when i want to interact with widget, to click something, click event is taken by overlayFrame. How can i pass click event trough overlayFrame to widgetView?
EDIT:
Now I'm trying to attach GestureLister to overlayFrame LinearLayout, to somehow see difference between MotionEvent that represent single click and long click. The problem that I'm facing is that OnLongPress in gesture listener is always called whatever I do, single click or long click.
Is there an explanation for this behavior? Tnx!
In my case I added flag to layoutParams of my view, which should have passed a touch event under:
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
This way view will ignore all touches (like view with visibility GONE)
Instead of using GestureListener you can override the onTouchListener in this way.
This will call longPress when the timer runs out and if an up comes in between it will cancel the LongPress
CountDownTimer c;
long time=5000;
#Override
public boolean onTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
c= new CountDownTimer(5000, 1000) {
public void onTick(long millisUntilFinished) {
time=millisUntilFinished;
}
public void onFinish() {
Log.i("","LONG PRESS");
}}.start();
break;
case MotionEvent.ACTION_UP:
if (time>0) {
Log.i("example","short click");
c.cancel();
}
break;
}
return true;
}
Maybe setting the overlay's attribute android:focusable="false" or android:focusableInTouchMode="false" would be enough.
You could also make your own overlay widget and override its onInterceptTouchEvent method to return false always.
public class NotTouchableLinearLayout extends LinearLayout {
// Override constructors
// ...
#Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
return false;
}
}
Instead of setting a GestureListener on the top layout, you should create your own class that extends LinearLayout and to override it's onTouchEvent method.
There you can implement the logic of long click \ short click etc.
The click events will first be sent to the widget layout, and only if it doesn't handle them (hence it's onTouchEvent returns false), you will get them on the top layout.
edit:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp" >
<LinearLayout
android:id="#+id/widgetView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="10dp"
android:gravity="center" >
</LinearLayout>
<com.example.touchtesting.MyLinearLayout
android:id="#+id/widgetOverlayFrame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="false" >
</com.example.touchtesting.MyLinearLayout>
</FrameLayout>
change the com.example.touchtesting to the name of your package.
and this is the class:
public class MyLinearLayout extends LinearLayout{
public MyLinearLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
private long startClick = 0;
#Override
public boolean onTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
startClick = ev.getEventTime();
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
if (ev.getEventTime() - startClick < 500) {
Log.i("example","short click");
}
else {
Log.i("example","long click");
}
break;
}
return true;
}
}
To get the long clicks to pass through the widgetView LinearLayout add android:longClickable="true". (For ordinary clicks add android:clickable="true")
So widgetView becomes:
<LinearLayout
android:id="#+id/widgetView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="10dp"
android:gravity="center"
android:longClickable="true">
</LinearLayout>
I can't get onTouch event triggered on a container when clicking on its ScrollView child.
I'm using API 12 on a Galaxy tab 10.1.
Anybody can help?
Thanks
Activity
public class TestActivity extends Activity{
#Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.dude);
LinearLayout mylayout = (LinearLayout) findViewById(R.id.mylayout);
mylayout.setOnTouchListener(new OnTouchListener () {
public boolean onTouch(View view, MotionEvent event) {
// Only called when touched outside the ScrollView
if (event.getAction() == android.view.MotionEvent.ACTION_DOWN) {
/* do stuff */
} else if (event.getAction() == android.view.MotionEvent.ACTION_UP) {
/* do stuff */
}
return true;
}
});
}
}
Layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mylayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="200dp"
android:gravity="center"
android:text="Touch here trigger parent's onTouch"
android:textColor="#000000"
android:textSize="40sp" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:layout_width="match_parent"
android:layout_height="1000dp"
android:background="#b00000"
android:gravity="center"
android:text="Touch here DOES NOT trigger parent's onTouch"
android:textColor="#000000"
android:textSize="40sp" />
</RelativeLayout>
</ScrollView>
</LinearLayout>
mylayout.setOnTouchListener(new OnTouchListener () {
public boolean onTouch(View view, MotionEvent event) {
// Only called when touched outside the ScrollView
if (event.getAction() == android.view.MotionEvent.ACTION_DOWN) {
/* do stuff */
return true;
} else if (event.getAction() == android.view.MotionEvent.ACTION_UP) {
/* do stuff */
return true;
}
return false;
}
});
this should work... but you no longer have auto-scroll when you fling it hard... it'll be a sticky scroll moving only as much as you drag.
Did u try to create ONE OnClickListener and add it to all childs?
Maybe this could solve your
As the ScrollView makes it childs scrollable it wouldn't have an own area to click in.
(Correct me if I'm wrong ^^)
You probably need this code
#Override
public boolean onInterceptTouchEvent(MotionEvent ev)
{
onTouchEvent(ev);
return false;
}
I have some code that I wrote to implement a vertical swipe on a
Gallery widget. It works great in Android 1.5 and 1.6 but does not
work in Android 2.2 (I have yet to try it with 2.1).
public class SwipeUpDetector extends SimpleOnGestureListener
implements OnTouchListener
{
private GestureDetector m_detector;
public SwipeUpDetector()
{
m_detector = new GestureDetector(m_context, this);
}
#Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
{
if (Math.abs(e1.getX() - e2.getX()) < s_swipeMaxOffPath &&
e1.getY() - e2.getY() >= s_swipeMinDistance &&
Math.abs(velocityY) >= s_swipeMinVelocity)
{
int pos = m_gallery.pointToPosition((int)e1.getX(), (int)e2.getY());
startAnimation(pos);
return true;
}
return false;
}
#Override
public boolean onTouch(View v, MotionEvent event)
{
return m_detector == null ? false : m_detector.onTouchEvent(event);
}
}
And to be able to get my gallery to detect the onFling I have the
following:
m_gallery.setOnTouchListener(new SwipeUpDetector());
In Android 1.5 and 1.6 this works great. In Android 2.2 onFling() is
never called. In looking around on Google and StackOverflow I found
one possible solution was to implement onDown() and return true.
However, I am also listening to single clicks and have a context menu
listener set up on this gallery. When I implement onDown() and return
true I do indeed get the swipe to work. But when I do this the
context menu doesn't display on a long click and the single clicks
don't work either... Clicking on items in the gallery cause the
gallery to jump around and I don't get any feedback when I click on an
item in the gallery. It just immediately makes that item the selected
item and moves it to the center.
I looked at the API differences report between 1.6, 2.1, and 2.2 and
didn't see anthing of significance that could have caused this to
break...
What am I doing wrong?
EDIT:
It might also be helpful to know that the gallery is nested inside a couple layouts as follows (this isn't a complete layout... it is just intended to show the hierarchy of where this Gallery lives):
<ScrollView>
<LinearLayout>
<RelativeLayout> <!-- This relative layout is a custom one that I subclassed -->
<Gallery />
</RelativeLayout>
</LinearLayout>
</ScrollView>
EDIT #2:
Here are the requested layouts... There are two of them, for reusability purposes. Here is the first one, which is the main activity's layout:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:myns="http://com.magouyaware/appswipe"
android:id="#+id/main_layout_id"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center_horizontal"
android:scrollbarAlwaysDrawVerticalTrack="false"
>
<LinearLayout
android:id="#+id/appdocks_layout_id"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="10dp"
android:layout_gravity="center"
android:orientation="vertical"
android:gravity="center"
android:background="#null"
>
<com.magouyaware.appswipe.TitledGallery
android:id="#+id/running_gallery_layout_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"
myns:gallery_title="#string/running_title"
/>
<com.magouyaware.appswipe.TitledGallery
android:id="#+id/recent_gallery_layout_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"
myns:gallery_title="#string/recent_title"
/>
<com.magouyaware.appswipe.TitledGallery
android:id="#+id/favs_gallery_layout_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"
myns:gallery_title="#string/favs_title"
/>
<com.magouyaware.appswipe.TitledGallery
android:id="#+id/service_gallery_layout_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"
myns:gallery_title="#string/service_title"
/>
<com.magouyaware.appswipe.TitledGallery
android:id="#+id/process_gallery_layout_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"
myns:gallery_title="#string/process_title"
/>
<include
android:id="#+id/indeterminate_progress_layout_id"
layout="#layout/indeterminate_progress_layout"
/>
</LinearLayout>
</ScrollView>
And here is the layout file for com.magouyaware.appswipe.TitledGallery... This is nothing more than a RelativeLayout subclass for the purpose of controlling several views as a single item in the code and for reusability:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/titled_gallery_main_layout_id"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:layout_gravity="center_vertical"
android:background="#null"
>
<LinearLayout
android:id="#+id/titled_gallery_expansion_layout_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:focusable="true"
android:clickable="true"
android:gravity="center_vertical"
>
<ImageView
android:id="#+id/titled_gallery_expansion_image_id"
android:layout_width="20dp"
android:layout_height="20dp"
android:duplicateParentState="true"
android:clickable="false"
/>
<TextView
style="#style/TitleText"
android:id="#+id/titled_gallery_title_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:paddingLeft="1sp"
android:paddingRight="10sp"
android:textColor="#drawable/titled_gallery_text_color_selector"
android:duplicateParentState="true"
android:clickable="false"
/>
</LinearLayout>
<Gallery
android:id="#+id/titled_gallery_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/titled_gallery_expansion_layout_id"
android:layout_alignWithParentIfMissing="true"
android:spacing="5sp"
android:clipChildren="false"
android:clipToPadding="false"
android:unselectedAlpha=".5"
android:focusable="false"
/>
<TextView
style="#style/SubTitleText"
android:id="#+id/titled_gallery_current_text_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/titled_gallery_id"
android:layout_alignWithParentIfMissing="true"
android:gravity="center_horizontal"
/>
</RelativeLayout>
I was able to receive single/double clicks and long click as well by implementing onSingleTapConfirmed, onDoubleTap and onLongPress in my implementation of SimpleOnGestureListener (while returning true from onDown).
Concerning why we should override onDown method. I think it is related to the issue #8233. It was reported one year ago against 2.1 version. Since only 10 people starred it so far I guess it would not be fixed in the near future.
UPDATE
It turned out that the issue was caused by the combination of ScrollView and Gallery and usage of OnTouchListener. Gallery itself implements OnGestureListener and encapsulates GestureDetector which is disabled when we set our OnTouchListener, resulting in a strange gallery behavior sometimes. On the other hand if we just subclass Gallery component and perform long-click/swipe detection in its onLongPress/onFling methods the parent ScrollView will intercept vertical move events preventing onFling call for such events. The solution is to override Gallery.dispatchTouchEvent and call requestDisallowInterceptTouchEvent(true) for gallery parent.
To summarize: if you want to detect swipes (long-, double-clicks etc.) for the Gallery (and possibly place it inside the ScrollView) use the custom component provided below instead of GestureDetector/OnTouchListener.
public class FlingGallery extends android.widget.Gallery implements OnDoubleTapListener {
private static final int SWIPE_MIN_VELOCITY = 30; // 30dp, set to the desired value
private static final int SWIPE_MIN_DISTANCE = 50; // 50dp, set to the desired value
private static final int SWIPE_MAX_OFF_PATH = 40; // 40dp, set to the desired value
private final float mSwipeMinDistance;
private final float mSwipeMaxOffPath;
private final float mSwipeMinVelocity;
public FlingGallery(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
float density = context.getResources().getDisplayMetrics().density;
this.mSwipeMinDistance = density * SWIPE_MIN_DISTANCE;
this.mSwipeMaxOffPath = density * SWIPE_MAX_OFF_PATH;
this.mSwipeMinVelocity = density * SWIPE_MIN_VELOCITY;
}
public FlingGallery(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.galleryStyle);
}
public FlingGallery(Context context) {
this(context, null);
}
#Override
public boolean dispatchTouchEvent(MotionEvent ev) {
final ViewParent parent;
if (ev.getAction() == MotionEvent.ACTION_MOVE && (parent = getParent()) != null) {
parent.requestDisallowInterceptTouchEvent(true); // this will be passed up to the root view, i.e. ScrollView in our case
}
return super.dispatchTouchEvent(ev);
}
#Override
public boolean onDoubleTap(MotionEvent e) {
// Your double-tap handler...
return true;
}
#Override
public boolean onDoubleTapEvent(MotionEvent e) {
return false;
}
#Override
public boolean onSingleTapConfirmed(MotionEvent e) {
// Your single-tap handler...
return true;
}
#Override
public void onLongPress(MotionEvent event) {
// Your long-press handler...
super.onLongPress(event);
}
#Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
if (e1 == null) {
return super.onFling(e1, e2, velocityX, velocityY);
}
float dx = e2.getX() - e1.getX();
float dy = e2.getY() - e1.getY();
if (abs(dx) < mSwipeMaxOffPath && abs(velocityY) > mSwipeMinVelocity && abs(dy) > mSwipeMinDistance) {
if (dy > 0) {
// Your from-top-to-bottom handler...
} else {
// Your from-bottom-to-top handler...
}
} else if (abs(dy) < mSwipeMaxOffPath && abs(velocityX) > mSwipeMinVelocity && abs(dx) > mSwipeMinDistance) {
if (dx > 0) {
// Your from-left-to-right handler...
} else {
// Your from-right-to-left handler...
}
}
return super.onFling(e1, e2, velocityX, velocityY);
}
}
If you do not handle the down you will not get any event (scroll, fling, up) linked to this down event. So you must return true.
I tried to understand why but I failed yet. Maybe since SimpleOnGestureListener returns false by default, and some new 2.2 optimizations in the outer Layout feels you do not want the event. You are not a valid target anymore for the chain of events.
To get your longPress working, can't you implement the onLongPress event in your detector and call the code that makes your menu appear?