onclick

I am creating a custom array adapter, I now want to implement a function which handles clicking the view. I am having two options in mind, but I am wondering if there is a difference in performance/working speed or something? Option 1, in the arrayAdapter itself: row.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub } }); Option 2, from the main Activity: listView.setAdapter(adapter); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long

Problem is when I press a key over a radio button, element MyFunc fires twice - once for "onkeypress" event, another time for "click" event. Question "Why?" I need to handle this by two different ways, but now I can not recognize what initial event was. When I click a mouse it fires just for "click" event. <ul> <li> <input type="radio" onkeypress="MyFunc(event, this)" onclick="MyFunc(event, this)" name="myList" id="MyId_1" />Topic 1 <input type="radio" onkeypress="MyFunc(event, this)" onclick="MyFunc(event, this)" name="myList" id="MyId_2" />Topic 2 </li> </ul> function MyFunc(e, obj) { alert

I have a custom button, on which I am capturing its onTouchEvent. public class CustomNumber extends ToggleButton { boolean drawGlow = false; float glowX = 0; float glowY = 0; float radius = 30; public CustomNumber(Context context) { super(context); } public CustomNumber(Context context, AttributeSet attrs) { super(context, attrs); } public CustomNumber(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } Paint paint = new Paint(); { paint.setAntiAlias(true); paint.setColor(Color.WHITE); paint.setAlpha(70); }; @Override public void draw(Canvas canvas){ super

这里面的return含有一些细节知识： 例如： onClick='return add_onclick()'与 onClick='add_onclick()'的区别 JAVASCRIPT在事件中调用函数时用return返回值实际上是对window.event.returnvalue进行设置。 而该值决定了当前操作是否继续。 当返回的是true时，将继续操作。 当返回是false时，将中断操作。 而直接执行时（不用return）。将不会对window.event.returnvalue进行设置 所以会默认地继续执行操作 详细说明如下： 例如： 当在 <a href="abc.htm" onclick="return add_onclick()">Open</a> 中 如果函数 add_onclick() 返回 true, 那么 页面就会打开 abc.htm 否则, (返回 false), 那么页面不会跳转到 abc.htm, 只会执行你的 add_onclick() 函数里的内容. (add_onclick函数中控制页面转到 abc.htm除外 ) 而 <a href="abc.htm" onclick="add_onclick()">Open</a> 不管 add_onclick() 返回什么值, 都会在执行完 add_onclick 后打开页面 abc.htm 另外补充：

I'm working on a website which requires mouseover menu's. I would not recommend mouseover menu's from an accessibility point of view, but it's pretty easy to implement using jQuery. The problem: we also need to support touchscreen devices (tablets). On such a device you don't have a mouse and, so the mouseover event is not working. I was hoping for jQuery to have a longpress event, but it doesn't. I did find a jQuery longclick plugin using Google, but it was for jQuery 1.4, so I'm not keen on using that. Also the jQuery plugin site is under maintenance at the moment, so that is not very