Android删除tabwidget中选项卡之间的空格

Question

我已经制作了一个应用程序,其中包含HelloTabActivity中的标签,这些标签之间也有空格,任何人都可以建议如何删除此空间,并且标签下方还有一条灰色线条如何删除？

main.xml中

<?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">
<TabHost
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:padding="5dp" >
        <HorizontalScrollView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:scrollbars="none">
            <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" />
        </HorizontalScrollView>
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp" />
    </LinearLayout>
</TabHost>
</LinearLayout>

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="CustomTheme" parent="@android:style/Theme">
    <item name="android:tabWidgetStyle">@style/CustomTabWidget</item>
</style>
<style name="CustomTabWidget" parent="@android:style/Widget.TabWidget">
    <item name="android:textAppearance">@style/CustomTabWidgetText</item>
</style>
<style name="CustomTabWidgetText" 
    parent="@android:style/TextAppearance.Widget.TabWidget">
    <item name="android:textSize">10sp</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textColor">#1589FF</item>
    <item name="android:padding">3dip</item>
</style>


</resources>

活动

public class InfralineTabWidget extends TabActivity{

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Resources res = getResources(); // Resource object to get Drawables
    TabHost tabHost = (TabHost)getTabHost();  // The activity TabHost

    TabHost.TabSpec spec;  // Resusable TabSpec for each tab
    Intent intent;  // Reusable Intent for each tab

    // Create an Intent to launch an Activity for the tab (to be reused)
    intent = new Intent().setClass(this, TopNewsActivity.class);

    // Initialize a TabSpec for each tab and add it to the TabHost
    spec = tabHost.newTabSpec("topNews").setIndicator("Top News", res.getDrawable(R.drawable.tab_news)).setContent(intent);
    tabHost.addTab(spec);

    // Do the same for the other tabs
    intent = new Intent().setClass(this, PowerActivity.class);
    spec = tabHost.newTabSpec("power").setIndicator("Power", res.getDrawable(R.drawable.tab_power)).setContent(intent);
    tabHost.addTab(spec);

    intent = new Intent().setClass(this, EnergyActivity.class);
    spec = tabHost.newTabSpec("energy").setIndicator("Renewable Energy", res.getDrawable(R.drawable.tab_energy)).setContent(intent);
    tabHost.addTab(spec);

    intent = new Intent().setClass(this, CoalActivity.class);
    spec = tabHost.newTabSpec("coal").setIndicator("Coal", res.getDrawable(R.drawable.tab_coal)).setContent(intent);
    tabHost.addTab(spec);

    intent = new Intent().setClass(this, OilnGasActivity.class);
    spec = tabHost.newTabSpec("oilnGas").setIndicator("Oil & Gas", res.getDrawable(R.drawable.tab_oilngas)).setContent(intent);
    tabHost.addTab(spec);

    tabHost.setCurrentTab(0);
    tabHost.getTabWidget().getChildAt(0).setLayoutParams(new LinearLayout.LayoutParams(100,25));
    tabHost.getTabWidget().getChildAt(1).setLayoutParams(new LinearLayout.LayoutParams(100,25));
    tabHost.getTabWidget().getChildAt(2).setLayoutParams(new LinearLayout.LayoutParams(100,25));
    tabHost.getTabWidget().getChildAt(3).setLayoutParams(new LinearLayout.LayoutParams(100,25));
    tabHost.getTabWidget().getChildAt(4).setLayoutParams(new LinearLayout.LayoutParams(100,25));



}



}

现在我想删除选项卡之间的黑色空格,它应该像它们已连接,而且我无法删除选项卡下方的灰线.

谢谢

Answer 1

要删除标签栏底部的灰线,您可以进行设置

tabHost.getTabWidget().setStripEnabled(false);

至于删除选项卡之间的差距..最好的方法是使用自己的drawable没有任何填充.您可以使用图像,或者您可以通过xml创建标签的背景,例如在<layer_list>根元素内:

<layer_list>
    <item android:top="0dp" android:left="0dp" android:right="0dp" android:bottom="0dp">
        <shape android:shape="rectangle">
        [..]
        </shape>
    </item>
    [..]
</layer_list>

并将此drawable设置为您的背景TabWidget.

要了解如何自定义选项卡,Web上有很多教程.例如,Josh的这个很短,有一个很好的解释.

更新

在这里,我使用自定义选项卡(基于您的代码)共享一小部分tabwidget,以实现以下输出:

你需要什么:

1. 三个新的图层绘图(用于选项卡的选定,聚焦和未选定状态)
2. 两个州的drawables(用于不同州的文本和背景)
3. 选项卡的新布局
4. 更新你的 main.xml
5. 更新您的活动类
6. 更新你的androidManifest.xml(删除样式声明)

这三个层可绘:tab_normal.xml,tab_focused.xml,tab_selected.xml
可拉伸/ tab_normal.xml:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/default_back_color" />
        </shape>
    </item>
    <item android:top="2dp">
        <shape android:shape="rectangle">
            <gradient android:startColor="#AAAAAA" android:centerColor="#888888"
                android:endColor="#666666" android:angle="90" />
            <corners android:bottomRightRadius="0dp"
                android:bottomLeftRadius="0dp" android:topLeftRadius="10dp"
                android:topRightRadius="10dp" />
        </shape>
    </item>
    <item android:top="4dp" android:left="1dp" android:right="1dp"
        android:bottom="0dp">
        <shape android:shape="rectangle">
            <solid android:color="@color/default_back_color" />
            <corners android:bottomRightRadius="0dp"
                android:bottomLeftRadius="0dp" android:topLeftRadius="8dp"
                android:topRightRadius="8dp" />
        </shape>
    </item>
</layer-list>

drawable/tab_focused.xml:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/default_back_color" />
        </shape>
    </item>
    <item android:top="2dp">
        <shape android:shape="rectangle">
            <gradient android:startColor="#AAAAAA" android:centerColor="#888888"
                android:endColor="#666666" android:angle="90" />
            <corners android:bottomRightRadius="0dp"
                android:bottomLeftRadius="0dp" android:topLeftRadius="10dp"
                android:topRightRadius="10dp" />
        </shape>
    </item>
    <item android:top="4dp" android:left="1dp" android:right="1dp"
        android:bottom="0dp">
        <shape android:shape="rectangle">
            <gradient android:startColor="#8F8F8F" android:centerColor="#656565"
                android:endColor="#3F3F3F" android:angle="90" />
            <corners android:bottomRightRadius="0dp"
                android:bottomLeftRadius="0dp" android:topLeftRadius="8dp"
                android:topRightRadius="8dp" />
        </shape>
    </item>
</layer-list>

drawable/tab_selected.xml:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/default_back_color" />
        </shape>
    </item>
    <item android:top="2dp">
        <shape android:shape="rectangle">
            <gradient android:startColor="#EEEEEE" android:centerColor="#CCCCCC"
                android:endColor="#AAAAAA" android:angle="-90" />
            <corners android:bottomRightRadius="0dp"
                android:bottomLeftRadius="0dp" android:topLeftRadius="10dp"
                android:topRightRadius="10dp" />
        </shape>
    </item>
    <item android:top="4dp" android:left="1dp" android:right="1dp"
        android:bottom="0dp">
        <shape android:shape="rectangle">
            <gradient android:startColor="#EAEAEA" android:centerColor="#9F9F9F"
                android:endColor="#696969" android:angle="90" />
            <corners android:bottomRightRadius="0dp"
                android:bottomLeftRadius="0dp" android:topLeftRadius="8dp"
                android:topRightRadius="8dp" />
        </shape>
    </item>
</layer-list>

两个状态drawables:tab_background_selector.xml,tab_text_selector.xml
drawable/tab_background_selector.xml:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" android:state_focused="false"
        android:state_pressed="false" android:drawable="@drawable/tab_selected"/>
    <item android:state_selected="false" android:state_focused="false"
        android:state_pressed="false" android:drawable="@drawable/tab_normal" />
    <item android:state_pressed="true" android:drawable="@drawable/tab_focused"/>
    <item android:state_focused="true" android:state_selected="true"
        android:state_pressed="false" android:drawable="@drawable/tab_selected"/>
</selector>

drawable/tab_text_selector.xml:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" android:color="#1589FF" />
    <item android:state_focused="true" android:color="#1589FF" />
    <item android:state_pressed="true" android:color="@android:color/white" />
    <item android:color="#F0F0F0" />
</selector>

选项卡的新布局:tab.xml
layout/tab.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:background="@drawable/tab_background_selector" android:gravity="center"
    android:orientation="vertical" android:padding="5dp">
    <ImageView android:id="@+id/tab_icon" android:layout_width="30dp"
        android:layout_height="30dp" android:scaleType="fitCenter" />
    <TextView android:id="@+id/tab_text" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:singleLine="true"
        android:textStyle="bold" android:gravity="center_horizontal"
        android:textSize="10sp" android:padding="3dip" android:ellipsize="marquee"
        android:textColor="@drawable/tab_text_selector" />
</LinearLayout>

main.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">
    <TabHost android:id="@android:id/tabhost" android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <LinearLayout android:orientation="vertical"
            android:layout_width="fill_parent" android:layout_height="fill_parent">
            <HorizontalScrollView android:scrollbars="none"
                android:layout_width="fill_parent" android:layout_height="wrap_content">
                <TabWidget android:id="@android:id/tabs" 
                    android:layout_width="fill_parent" android:layout_height="wrap_content" />
            </HorizontalScrollView>
            <FrameLayout android:id="@android:id/tabcontent"
                android:layout_width="fill_parent" android:layout_height="fill_parent"
                android:padding="5dp" />
        </LinearLayout>
    </TabHost>
</LinearLayout>

InfralineTabWidget.java:

public class InfralineTabWidget extends TabActivity
{
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final TabHost tabHost = (TabHost) getTabHost();

        tabHost.addTab(createTab(TopNewsActivity.class, 
                "topNews", "Top News", R.drawable.tab_news));
        tabHost.addTab(createTab(PowerActivity.class, 
                "power", "Power", R.drawable.tab_power));
        tabHost.addTab(createTab(EnergyActivity.class, 
                "energy", "Renewable Energy", R.drawable.tab_energy));
        tabHost.addTab(createTab(CoalActivity.class, 
                "coal", "Coal", R.drawable.tab_coal));
        tabHost.addTab(createTab(OilnGasActivity.class, 
                "oilnGas", "Oil & Gas", R.drawable.tab_oilngas));

        tabHost.setCurrentTab(0);
        tabHost.getTabWidget().getChildAt(0).getLayoutParams().width = 140;
        tabHost.getTabWidget().getChildAt(1).getLayoutParams().width = 140;
        tabHost.getTabWidget().getChildAt(2).getLayoutParams().width = 140;
        tabHost.getTabWidget().getChildAt(3).getLayoutParams().width = 140;
        tabHost.getTabWidget().getChildAt(4).getLayoutParams().width = 140;
    }

    private TabSpec createTab(final Class<?> intentClass, final String tag, 
            final String title, final int drawable)
    {
        final Intent intent = new Intent().setClass(this, intentClass);

        final View tab = LayoutInflater.from(getTabHost().getContext()).
            inflate(R.layout.tab, null);
        ((TextView)tab.findViewById(R.id.tab_text)).setText(title);
        ((ImageView)tab.findViewById(R.id.tab_icon)).setImageResource(drawable);

        return getTabHost().newTabSpec(tag).setIndicator(tab).setContent(intent);
    }
}

就是这样.
要创建直角形标签,只需丢失图层可绘制xml文件中的角落规格.
还可以围绕颜色,笔触等进行游戏,使结果符合您的喜好.

Answer 2

在xml布局中使用android:showDividers ="none".

<TabWidget
        android:id="@android:id/tabs"
        android:layout_width="fill_parent"
        android:showDividers="none"
        android:layout_height="wrap_content"/>