问题
I have a ScrollView and an ImageView inside a FrameLayout. The ImageView is behind the scroll view
My ScrollView have a transparent space (LinearLayout s_layout_transparent with 925px height).
So my ImageView can be seen through this transparent space but can not be click.
I have tried to add some value (android:clickable="false" android:focusable=" android:focusableInTouchMode="false") to scroll view to prevent it intercepts the click envent of the ImageView but this not work at all.
Here is my layout:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:gravity="top|center_horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingRight="10dp"
>
<ImageView
android:visibility="visible"
android:id="@+id/s_imgv_splash"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/temp_detail_screen_splash"
android:adjustViewBounds="true"
android:scaleType="fitXY"/>
</LinearLayout>
<com.dreambox.android.saven.Views.ScrollView
android:id="@+id/s_scrollview_event_detail"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbars="none"
android:visibility="visible"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"
>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="false"
android:focusableInTouchMode="false"
android:focusable="false">
<LinearLayout
android:id="@+id/s_layout_transparent"
android:layout_gravity="center_vertical"
android:layout_width="match_parent"
android:layout_height="925px"
android:orientation="horizontal"
android:background="@color/trasparent"
android:clickable="false"
android:focusableInTouchMode="false"
android:focusable="false">
</LinearLayout>
<LinearLayout...>
<LinearLayout...>
</LinearLayout>
</com.dreambox.android.saven.Views.ScrollView>
</FrameLayout>
回答1:
if you can fill the transparent parts with an empty view (lets call it dummyView), you can do something like...
dummyView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent event) {
// pass on the touch event to the ImageView
s_imgv_splash.dispatchTouchEvent(event);
// returning true because we handled the event
return true;
}
});
回答2:
I solved this issue. Posting this for someone facing the same issue at present/in the future. Thanks for the suggestion Mahesh. Based on the suggestion from Mahesh, this is how i did it. This is my layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/scroll_view"
android:background="#ffffff"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/bg_tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TestView"
android:layout_marginTop="5dip"/>
<View android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/background_dark"
android:alpha="0"
/>
<ScrollView
android:id="@+id/sv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<LinearLayout
android:id="@id+/wrapper"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@android:color/transparent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/dummy"
android:layout_width="fill_parent"
android:background="@android:color/transparent"
android:layout_height="500dip"
android:orientation="vertical"/>
<LinearLayout
android:id="@+id/scroll_"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
................
................
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
After adding LinearLayouts @id/dummy and @id/scroll_ , I was unable to click on TextView @id/bg_tv. The following code solved my problem.
//dispatch touch events
mDummyView = findViewById(R.id.dummy);
mDummyView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
mTextView.dispatchTouchEvent(motionEvent);
return true;
}
});
mLayout = (LinearLayout)findViewById(R.id.scroll_);
mLayout.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (scrollPercent <= 0.25f) {
mTextView.dispatchTouchEvent(motionEvent);
return true;
}
return false;
}
});
In the case of mLayout, TouchEvents are dispatched only after the scrollView goes to the bottom of the screen.
PS: I am writing an answer for the first time. I am sorry if you find the formatting very poor or if the answer is not written the way it is supposed to be.
回答3:
I cant give exact solution
Check it may helps
yourscrollview.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(touch exists inside imageview boundaries)
{
do imageview click action
}
return false;
}
})
回答4:
The ScrollView is last in FrameLayout therefore it has preference.
When your LinearLayout with ImageView is activated, you need to say
findViewById(R.id.s_scrollview_event_detail).setVisibility(View.INVISIBLE)
and vice versa, when ScrollView is activated, the "sibling" Layout view must be set invisible.
回答5:
Check to see if the coordinates of the event are within the bounds of the view you want to receive the event. If there is a match, use the performClick method to pass the event along to the desired view. Here is an example:
override fun onCreate(savedInstanceState: Bundle?) {
....
val viewUnderDummySpace = findViewById<View>(R.id.your_textview_or_button_or_image)
val dummySpace = scrollView.findViewById<View>(R.id.dummy_space)
dummySpace.setOnTouchListener(object : View.OnTouchListener {
override fun onTouch(p0: View?, event: MotionEvent?): Boolean {
event?.let {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (inViewInBounds(viewUnderDummySpace, event.rawX.toInt(), event.rawY.toInt())) {
//Click performed within bounds of the desired view
viewUnderDummySpace.performClick()
}
}
}
return true
}
})
}
private var outRect = Rect()
private var location = IntArray(2)
private fun inViewInBounds(view: View, x: Int, y: Int): Boolean {
view.getDrawingRect(outRect)
view.getLocationOnScreen(location)
outRect.offset(location[0], location[1])
return outRect.contains(x, y)
}
回答6:
I also used scroll offset and it gave a perfect result on click events.
blockingViewInScroll.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent event) {
event.offsetLocation(-scrollView.getScrollX(), -scrollView.getScrollY());
blockedViewUnderScroll.dispatchTouchEvent(event);
return true;
}
});
来源：https://stackoverflow.com/questions/25839816/how-to-prevent-scrollview-from-intercepting-click-touch-events-of-the-view-behin