ViewPagerIndicator的TabPageIndicator默认样式失败.为什么以及如何修复？

Question

如果我只是告诉你,而不是解释问题,更容易:

正如您所看到的那样,标签标题全部拼接在一起,完全没有样式.它们在通过开关标签滑动时功能正常(尽管除了适当的位置移动之外没有可见的指示)并且点击标签切换视图,但是缺少所有样式.这是代码:

gallerylists.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent" >

  <com.viewpagerindicator.TabPageIndicator
    android:id="@+id/indicator"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

  <android.support.v4.view.ViewPager
    android:id="@+id/gallerypager"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1" />

</LinearLayout>

GalleryLists.java

public class GalleryLists extends Activity {
  Context context;

  private static final String[] titles = new String[] {
        "20 Hottest", "20 Worst", "20 Awesomest", "MMA", "Comedy", "Moto", "Games" };

  ViewPager listPager;
  ListPagerAdapter listPagerAdapter;

  PageIndicator indicator;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.gallerylists);

    context = this;

    listPagerAdapter = new ListPagerAdapter();

    ViewPager.OnPageChangeListener changeListener = new ViewPager.OnPageChangeListener() {

      @Override
      public void onPageScrolled(int i, float v, int i1) {}

      @Override
      public void onPageSelected(int i) {}

      @Override
      public void onPageScrollStateChanged(int i) {}
    };

    listPager = (ViewPager) findViewById(R.id.gallerypager);
    listPager.setAdapter(listPagerAdapter);
    listPager.setOnPageChangeListener(changeListener);

    indicator = (TabPageIndicator) findViewById(R.id.indicator);
    indicator.setViewPager(listPager);
    indicator.setOnPageChangeListener(changeListener);
  }

  private class ListPagerAdapter extends PagerAdapter {

    // Not important (I believe)
  }
}

而已.现在,除非我在阅读文档和检查示例时非常困惑,否则我不必采取任何额外步骤来使用默认样式.我有点失落.

Answer 1

我有同样的问题,但android:theme="@style/Theme.PageIndicatorDefaults"没有结合我的应用程序主题.

还有另一种个性化,覆盖方式res/values/style.xml:

<resources>

    <style name="AppTheme" parent="android:Theme.Light" >
        <item name="vpiTabPageIndicatorStyle">@style/CustomTabPageIndicator</item>

    </style>

    <style name="CustomTabPageIndicator" >
        <item name="android:gravity">center</item>
        <item name="android:background">@drawable/vpi__tab_indicator</item>        
        <item name="android:paddingTop">12dp</item>
        <item name="android:paddingBottom">12dp</item>
        <item name="android:textAppearance">@style/TextAppearance.TabPageIndicator</item>
        <item name="android:textSize">15sp</item>
        <item name="android:maxLines">1</item>
        <item name="android:textColor">#FF555555</item>
    </style>
</resources>

Answer 2

我觉得自己有点白痴,但这是一个非常简单明了的解决方案.

AndroidManifest.xml中

...
<activity
  android:name=".GalleryLists"
  android:theme="@style/Theme.PageIndicatorDefaults"
  ... >
</activity>
...

是的,我需要做的就是实际使用主题.希望这将有助于其他一些穷人失去的灵魂.

Answer 3

Michaels解决方案的一小部分:如果您已经为您的Activity使用自定义主题,只需添加两行:

<item name="vpiIconPageIndicatorStyle">@style/Widget.IconPageIndicator</item>
<item name="vpiTabPageIndicatorStyle">@style/Widget.TabPageIndicator</item>