单击项目中的元素的ListView项的变化状态？ [英] Click in a ListView item changes status of elements inside the item?

问题描述

我不知道究竟该怎么解释这个问题，但我会尽力。我有几个项目一个ListView。每个项目都有一个TextView和两个ImageView的内部。我想ImageView的变化，当我点击它们，我要打开上下文菜单，当我preSS很长一段时间进入ListView项。

I don't know exactly how to explain this problem, but I'll try. I have a ListView with several items. Each item has inside a TextView and two ImageView. I want the ImageView change when I click on them, and I want to open a context menu when I press for a long time into the ListView item.

有关的ImageView的，一切工作正常。对于整个项目，我可以显示一个长preSS后的上下文菜单，但我的问题是，当我pressing TextView的，例如ImageView的变化也是如此。

For the ImageView, everything works properly. For the whole item, I can show the context menu after a long press, but my problem is that the ImageView changes as well when I am pressing the TextView, for example.

我的code的索莫件：

Somo pieces of my code:

ListView项：

ListView item:

     <TextView 
      android:id="@+id/title"
      android:textColor="@color/black"
      android:maxLines="2"
      android:textSize="14dip" 
            />
    <ImageView
        android:id="@+id/minus"
        android:src="@drawable/minusbutton"
        android:adjustViewBounds="true"
        android:gravity="center"
    />
    <ImageView 
        android:id="@+id/plus"
        android:src="@drawable/plusbutton"
        android:adjustViewBounds="true"
        android:gravity="center"
    />

绘制对象改变的加号按钮的状态：

Drawable to change the status of the plus button:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false"
      android:drawable="@drawable/button_add_normal_disabled" />
<item android:state_enabled="true"
      android:state_pressed="true"
      android:drawable="@drawable/button_add_pressed" />
<item android:state_enabled="true"
      android:state_focused="true" 
      android:state_pressed="false" 
      android:drawable="@drawable/button_add_active" />
<item android:state_enabled="true"
      android:state_focused="false" 
      android:state_pressed="false"
      android:drawable="@drawable/button_add_normal" />

我希望你明白我的问题。我认为，鉴于所有的孩子都在父母的事件的影响，但我不知道。

I hope you understand my problem. I think that all the children of a view are affected by an event in the parent, but I am not sure.

你有一个解决方案？在此先感谢

Do you have a solution? Thanks in advance

推荐答案

解决这个问题的最简单方法是继承ViewGroup中，并覆盖dispatchSet $​​ P $ pssed。

The easiest way to solve this issue is to inherit viewgroup and override dispatchSetPressed.

下面是为例

public class DuplicateParentStateAwareLinearLayout extends LinearLayout {

    public DuplicateParentStateAwareLinearLayout(Context context) {
        super(context);
    }

    public DuplicateParentStateAwareLinearLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public DuplicateParentStateAwareLinearLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    /*
     * By default ViewGroup call setPressed on each child view, this take into account duplicateparentstate parameter
     */
     @Override
     protected void  dispatchSetPressed(boolean pressed) {
          for (int i = 0; i < getChildCount(); i++) {
             View child = getChildAt(i);
             if (child.isDuplicateParentStateEnabled()){
                 getChildAt(i).setPressed(pressed);
             }
         }
      }
}

使用这种方法的缺点是，你将不得不duplicateparentstate设置为true，你想不应该有这样的行为，每一个项目和子项目。

The catch using this method is that you will have to set duplicateparentstate to true for each items you want to and subitems that shouldn't have this behavior.

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