在 Android 中自定义状态选项卡 [英] Customizing tabs on state in Android

问题描述

我知道如何将图标放在每个选项卡上，这没问题.我也遇到过这个:[堆栈溢出线程几乎相同][1]

I know how to put the icon on each tab, that is no problem. I also ran across this : [Stack Overflow thread on pretty much same thing][1]

我点击了该问题中的一个链接并找到了 [this][2]

I followed one of the links from that question and found [this][2]

差不多，它说要使用 XML 中定义的选择器，当然，确实做到了.但是没有与它关联的 id，所以我不确定如何将选择器功能作为可绘制对象，以便我可以将其用作选项卡的图标.也许我正在以错误的方式解决这个问题.但这就是我所拥有的，显然缺少一些东西.

Pretty much, it said to use a selector defined in the XML, sure, did that. But there is no id associated w/ it so I am not sure how to get the selector function as a drawable so I can use it as the icon for the tabs. Maybe I am going about this the wrong way. But this is what I have, and obviously missing something.

<selector
    android:id="@+id/myselector"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Non focused states -->
    <item
        android:state_focused="false"
        android:state_selected="false"
        android:state_pressed="false"
        android:drawable="@drawable/darklogo" />
    <item
        android:state_focused="false"
        android:state_selected="true"
        android:state_pressed="false"
        android:drawable="@drawable/lightlogo" />

    <!-- Focused states -->
    <item
        android:state_focused="true"
        android:state_selected="false"
        android:state_pressed="false"
        android:drawable="@drawable/lightlogo" />
    <item
        android:state_focused="true"
        android:state_selected="true"
        android:state_pressed="false"
        android:drawable="@drawable/lightlogo" />

    <!-- Pressed -->
    <item
        android:state_pressed="true"
        android:drawable="@drawable/lightlogo" />
</selector>

在我的代码中，使用以下命令生成了一个示例选项卡:

In my code, an example tab is generated using :

  host.addTab(host.newTabSpec("three")  
                .setIndicator("map",drawables)  
                .setContent(new Intent(this, Map.class))); 

现在 drawable 只是对可绘制图像资源的引用.如何使选择器成为可绘制对象?

Right now drawable is just a reference to a drawable image resource. How do I make the selector a drawable?

这是我的问题 [1]:更新 Android 选项卡图标 [2]:http://groups.google.com/group/android-evelopers/browse_thread/thread/ef3bdebcb715b385

This is my question [1]: Updating Android Tab Icons [2]: http://groups.google.com/group/android-evelopers/browse_thread/thread/ef3bdebcb715b385

推荐答案

您在此处包含的 XML 是一种定义可绘制对象的方法，可让您嵌入 case 语句.它根据分配给它的视图的状态呈现不同的可绘制对象.作为可绘制对象，您应该将其保存为项目的 res/drawable 文件夹中的 xml 文件(例如 tabselector.xml).

The XML you've included here is a way of defining a drawable that lets you embed a case statement. It presents a different drawable depending on the state of the View it's being assigned to. As a drawable, you should save it as an xml file within the res/drawable folder of your project (for example tabselector.xml).

要将它用于 Tabhost，您需要像往常一样构造 TabActivity(如 教程示例).

To use it for the Tabhost, you need to construct the TabActivity as you normally would (as shown in this tutorial example).

然后，当您将每个选项卡添加到主机时，您指定 tabselector 可绘制作为指示器，如下面的TAB 1"所示.

Then when you add each tab to the host, you specify the tabselector drawable as the indicator as shown for "TAB 1" below.

Drawable mySelector = getResources().getDrawable(R.drawable.tabselector);

mTabHost.addTab(mTabHost.newTabSpec("tab_test1").setIndicator("TAB 1", mySelector).setContent(R.id.textview1));
mTabHost.addTab(mTabHost.newTabSpec("tab_test2").setIndicator("TAB 2").setContent(R.id.textview2));

注意:此时您无法更改图标后面的选项卡背景颜色.

Note: You cannot change the color of the tab backgrounds behind the icons at this point.

这篇关于在 Android 中自定义状态选项卡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！