ListView控件对Android的极限高度 [英] Limit height of ListView on Android
问题描述
我要显示下一个ListView的按钮。问题是，如果在ListView被延长（添加的项目...），按钮被排挤出画面。
I want to show a button under a ListView. Problem is, if the ListView gets extended (items added...), the button is pushed out of the screen.
我试图与权重的LinearLayout（如<一个建议href="http://stackoverflow.com/questions/4054567/android-why-is-there-no-maxheight-for-a-view">Android:为什么没有对了maxHeight一个视图？），但无论是我得到的权重错了，或者根本没有工作。
I tried a LinearLayout with weights (as suggested in Android: why is there no maxHeight for a View?), but either I got the weights wrong or it simply didn't work.
另外，我发现在某处使用RelativeLayout的提示。 ListView控件然后将用上面的按钮设置安卓layout_above参数。
Also, I found somewhere the hint to use a RelativeLayout. The ListView would then be set above the button with the "android:layout_above" param.
这个问题是，我不知道该怎么算账定位按钮。在我发现的例子，ListView控件下方查看使用调整机器人：layout_alignParentBottom，但我不希望我的按钮，附着在屏幕的底部。
Problem with this is that I don't know how to position the button afterwards. In the example I found, the View below the ListView was adjusted using "android:layout_alignParentBottom", but I don't want my button to cling to the bottom of the screen.
除了采用自动调用setHeight，方法和所需空间的一些计算任何想法？
Any ideas apart from using setHeight-method and some calculating of the required space?
感谢您的时间， 水母
编辑： 我得到了很多有用的答案，感谢大家！
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bigstone的＆放大器; user639183的解决方案的几乎的完美。然而，我必须的额外填充/余量添加到按钮的底部，因为它仍然会被推一半出路屏幕（但然后停止）
bigstone's & user639183's solution almost worked perfectly. However, I had to add an extra padding/margin to the bottom of the button, as it still would be pushed half way out of the screen (but then stopped)
如果你想固定在屏幕底部的按钮Adinia的相对布局的答案只能是罚款。这不是我的本意，但仍可能对他人有用的。
Adinia's answer with the relative layout only is fine if you want the button fixed to the bottom of the screen. It's not what I intended but still might be useful for others.
ANGELOS的解决方案是一个我选择在年底，因为它只是创造我想要的效果。但是，我做了两个小的改动的LinearLayout周围的按钮：
AngeloS's solution was the one I chose at the end as it just created the effects I wanted. However, I made two minor changes to the LinearLayout around the button:
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首先，因为我不想在我的布局任何绝对价值，我改变了机器人：layout_height =45像素到WRAP_CONTENT，其工作也很不错。
First, as I didn't want to have any absolute values in my layout, I changed android:layout_height="45px" to "wrap_content", which works just fine as well.
二，因为我想按钮被horizontically中心，它仅支持垂直的LinearLayout，我改变了机器人：方向=横向，以垂直。
Second, as I wanted the button to be centered horizontically, which is only supported by vertical LinearLayout, I changed android:orientation="horizontal" to "vertical".
安吉洛还表示在他最初的职位，他不知道，如果机器人：layout_weight =0.1参数周围的ListView中的LinearLayout中有任何影响;我只是想，它实际上呢！如果没有，该按钮被排挤出画面了。
AngeloS also stated in his initial post that he was not sure if the android:layout_weight="0.1" param in the LinearLayout around the ListView had any effect; I just tried and it actually does! Without, the button gets pushed out of the screen again.
推荐答案
我有这个确切的问题，并解决它，我创建了两个单独的 LinearLayouts 来容纳的ListView 和按钮分别。从那里，我把两个在另一个线性布局，并设置容器的安卓方向到垂直。我还设置了的LinearLayout ，里面的的ListView 到 0.1 ，但我不知道是否有任何影响。从那里，你可以设置在底部容器的高度（有你的按钮），你就什么高度一样。
I had this exact issue and to solve it I created two seperate LinearLayouts to house the ListView and Button respectively. From there I put both in another Linear Layout and set that container's android:orientation to vertical. I also set the weight of the the LinearLayout that housed the ListView to 0.1 but I dont know if that has any effect. From there, you can set the height of the bottom container (that has your button) to whatever height you would like.
修改这就是我的意思是：
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.1"
>
<ListView android:id="@+id/ListView01"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:dividerHeight="2px">
</ListView>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="45px"
android:background="@drawable/drawable"
>
<Button android:background="@drawable/btn_more2"
android:id="@+id/moreButton"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:paddingRight="20px"
/>
</LinearLayout>
</LinearLayout>
上面的溶液将修复按钮在屏幕的底部。
The above solution will fix the button the the bottom of the screen.
要具备按钮浮在列表的底部，改变 ListView01 的高度 WRAP_CONTENT ：
To have the button float at the bottom of the list, change the height of ListView01 to wrap_content:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.1"
>
<ListView android:id="@+id/ListView01"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:dividerHeight="2px">
</ListView>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="45px"
android:background="@drawable/drawable"
>
<Button android:background="@drawable/btn_more2"
android:id="@+id/moreButton"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:paddingRight="20px"
/>
</LinearLayout>
</LinearLayout>
这篇关于ListView控件对Android的极限高度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
