如何在 Android 中更改标签样式？

How to change tab style in Android?

提问by Stefan

I'd like to my Android tabs to look flat and simple like the ones in the official TWitter app. How can I override the default (light) theme and change the background images for the tabs using style/theme definitions?

我想让我的 Android 标签看起来像官方 TWitter 应用程序中的标签一样扁平和简单。如何覆盖默认（浅色）主题并使用样式/主题定义更改选项卡的背景图像？

回答by Mathias Conradt

You could adjust the tabs via code - here's an excerpt from my application, but you could also assign themes instead of the background image directly. (I haven't used a way via xml attributes yet, not sure if that's available as well somehow).

您可以通过代码调整选项卡 - 这是我的应用程序的摘录，但您也可以直接分配主题而不是背景图像。（我还没有使用通过 xml 属性的方法，不确定它是否也可用）。

private void initTabs() {
    tabs = (TabHost) findViewById(R.id.tabhost);
    tabs.setup();
    tabs.setBackgroundResource(R.drawable.bg_midgray);

   TabHost.TabSpec spec;

   // Location info
   txtTabInfo = new TextView(this);
   txtTabInfo.setText("INFO");
   txtTabInfo.setPadding(0, 5, 0, 0);
   txtTabInfo.setTextSize(11);

   txtTabInfo.setBackgroundResource(R.drawable.bg_tab_left_active_right_inactive);
   txtTabInfo.setTextColor(Color.DKGRAY);
   txtTabInfo.setGravity(Gravity.CENTER_HORIZONTAL);
   txtTabInfo.setHeight(39);
   spec = tabs.newTabSpec("tabInfo");
   spec.setContent(R.id.tabInfo);
   spec.setIndicator(txtTabInfo);
   tabs.addTab(spec);
   ...
}

回答by John Fowler

I used the following definition of my drawable, tab_background.xml

我使用了我的drawable的以下定义， tab_background.xml

   <selector xmlns:android="http://schemas.android.com/apk/res/android" >
        <item android:state_selected="true" android:drawable="@drawable/tab_bg_selected" />
        <item android:drawable="@drawable/tab_bg_normal" /> 
   </selector>

Then iterate over the tabs to set them.

然后遍历选项卡以设置它们。

TabWidget tabWidget = tabHost.getTabWidget();

for(int i=0; i<tabWidget.getChildCount(); i++)
  tabWidget.getChildAt(i).setBackgroundResource(R.drawable.tab_background);

回答by Scott Ferguson

You could also do it via XML and create/define a global theme for all tabs in your app. There's more info on creating widget themes here: http://developer.android.com/guide/topics/ui/themes.html

您也可以通过 XML 来完成，并为应用程序中的所有选项卡创建/定义一个全局主题。这里有关于创建小部件主题的更多信息：http: //developer.android.com/guide/topics/ui/themes.html