Android :: OnTouchListener && OnClickListener combination issue

问题

Problem description:

I have a TextView on a RelativeLayout and I want to color it red when the user touches it, and go on another page when he clicks on it. So I tried to set an OnClickListener to do the click, and an OnTouchListener to implement the touch function (MotionEvent.ACTION_DOWN) but this combination doesn't work, because OnTouchListener makes OnClickListener non-functional (don't know why).

On forums people say that we can implement the OnClick by the OnTouch MotionEvent.ACTION_UP, but this one can be triggered out of my TextView layout (the TextView gonna be clicked if you press it and drag your finger out of him to release) and this is not the desired behavior because I want:
click = press + release on the TextView.

Can someone give me a solution for this please?

回答1:

you may call View.performClick() when action_up. Hope it helps.

your_txtView.setOnClickListener(new TextView.OnClickListener(){
        public void onClick(View v) {
            // TODO Auto-generated method stub

        }
    });

    your_txtView.setOnTouchListener(new TextView.OnTouchListener(){
            @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (MotionEvent.ACTION_DOWN == event.getAction()) {

        } else if (MotionEvent.ACTION_UP == event.getAction()) {
            v.performClick();
        }

        return true;
    }
    });

回答2:

Adel, is the problem with the first click, or you don't get any click at all?

There is this issue if you have multiple clickable layout you don't get any click events for the first. That's because it makes it first selected and then you get the click event, try the below code.

private class CustomTouchListener implements OnTouchListener {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        TextView tv = (TextView) v.findViewById(R.id.single_line_text);
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            tv.setTextColor(COLOR_WHEN_PRESSED);
        } else if (event.getAction() == MotionEvent.ACTION_UP) {
            tv.setTextColor(COLOR_WHEN_RELEASED);
            // Action of click goes here
        } else if (event.getAction() == MotionEvent.ACTION_CANCEL) {
            tv.setTextColor(COLOR_WHEN_RELEASED);
                            // To handle release outside the layout region
        }
        return false;
    }
}

This is working in my current implementation if you set the touch listener for your layout.

You also need to set below on your layout

android:focusable="true"
android:focusableInTouchMode="true"
android:clickable="true"

Hope it helps!!!

EDIT: Additionally, there should be a flag in both DOWN and UP. Set it in DOWN and check if its set in UP. This will avoid a bug where user might tap anywhere in the screen and then hover on your textview and release it.

回答3:

Had the same problem. Solved it by returning false from ACTION_MOVE. I've been fighting with it for few hours, trying various things, but seems like i've kept overlooking this little issue... And now it makes sense. When you return true from onTouch, futher processing is stopped, so that OnClickListener is not aware of any movements and triggers onClick even after pointer have moved outside of view.

来源：https://stackoverflow.com/questions/7188648/android-ontouchlistener-onclicklistener-combination-issue

标签

android

release

ontouchlistener

pressed