Android Event Distribution notes

1.Simpleongesturelistener

Problems encountered:

You define a button that inherits from the button, and the action that starts with changing the color of the buttons is triggered in the Ontouchevent Ation_down.

At this point, put in the scrollview inside, found that if the button to slide, will trigger the button to change the color, obviously this is wrong.

Then I checked and found Simpleongesturelistener.

Rewritten the Ondown event and the Onsingletapup event, the code is as follows

PrivateSimpleongesturelistener Msimpleongesturelistener =NewSimpleongesturelistener () {@Override Public BooleanOnsingletapup (motionevent e) {//change the color only when the click, if in the Ondown, the swipe will also change the colorSetchecked (!mischecked); return true; } @Override Public BooleanOndown (motionevent e) {//This returns true before calling Onsingletapup            return true; }    };

Rewrite the ontouchevent in your custom button

@Override  Public Boolean ontouchevent (Motionevent event) {  return  mgesturedetector.ontouchevent (event);}

QUOTE

1. Click on the execution of an item on the screen there are two cases, one is short time, one time is slightly longer

Time is short: Ondown--------"Onsingletapup--------" onsingletapconfirmed

A little longer: Ondown--------"onshowpress------" Onsingletapup--------"onsingletapconfirmed

2. Long Press Events

Ondown--------"onshowpress------" onlongpress

3. Toss: After the finger touches the screen, slightly swipe and release immediately

Ondown-----"onscroll----" onscroll----"onscroll----" ...----->onfling

4. Drag

Ondown------"onscroll----" onscroll------"onfiling

Note: Sometimes it triggers onfiling, but sometimes it does not trigger, and personal understanding is caused by the non-standard movement of people.

Android Event Distribution notes