龙preSS按钮事件处理函数 [英] Long Press Button Event Handler

问题描述

我看到几篇文章，如本<一个href="http://stackoverflow.com/questions/4402740/android-long-click-on-a-button-perform-actions">one描述如何处理一个长preSS事件与一个按钮。我可以按照下列指示，但我想知道是否有可能做到这一点我处理一个点击的方式相同。我办理了点击的方法是定义X​​ML处理程序这样：

I have seen several articles such as this one describing how to handle a long press event with a button. I can follow these directions but I am wondering if it is possible to do it the same way I handled a click. The way I handled a click was to define the handler in XML as such:

<Button
    android:id="@+id/btn_NextLift"
    ...
    android:onClick="btn_NextLiftClick" />

然后在code这样：

then in code as such:

public void btn_NextLiftClick(View vw_Current) 
    {...}

我确实看到了布尔属性longClickable中的XML，但我看不出哪里定义事件处理程序，以便... ???

I do see the boolean property longClickable in the xml but I don't see where to define an event handler so...???

TIA JB

推荐答案

通过XML你不能做到这一点。相反，使用：

You can't do this via XML. Instead, use:

Button button = (Button) findViewById(R.id.btn_NextLift);

button.setOnLongClickListener(new OnLongClickListener() { 
        @Override
        public boolean onLongClick(View v) {
            // TODO Auto-generated method stub
            return true;
        }
    });

确认此code来后的setContentView（）被调用。

Make sure this code comes after setContentView() has been called.

此外，请确保 longClickable 属性设置为true。

Also, make sure that the longClickable property is set to true.

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