Tod*_*tov 13 android android-tablayout
有没有办法在TabLayout中的选项卡之间添加边距?我尝试过为Widget.Design.TabLayout使用自定义样式,但是有些属性只与填充有关,但没有边距.
Tod*_*tov 39
好的伙伴,花了2-3个小时后,我终于找到了解决方案.
如果您使用的是TabLayout,则无法使用样式等向选项卡添加边距.(作为@Connecting与Android之前的生活)
但是,您可以通过编写一些Java代码来实现.总而言之,您的代码应该与那个代码类似:
for(int i=0; i < mTabLayout.getTabCount(); i++) {
View tab = ((ViewGroup) mTabLayout.getChildAt(0)).getChildAt(i);
ViewGroup.MarginLayoutParams p = (ViewGroup.MarginLayoutParams) tab.getLayoutParams();
p.setMargins(0, 0, 50, 0);
tab.requestLayout();
}
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为了将每个选项卡作为View,我们必须首先获取包含它们的容器.在这种情况下,TabLayout使用SlidingTabStrip作为选项卡的容器.SlidingTabStrip是TabLayout的第一个子节点:
View tab = ((ViewGroup) mTabLayout.getChildAt(0))
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在这个小细节之后,一切都非常直截了当.
ban*_*ing 13
这是我在纯 xml 中的做法。
尺寸.xml:
<!-- Set this to 50% of what you want the actual space between the tabs to be. -->
<dimen name="tab_spacing_half">5dp</dimen> <!-- i.e., 10dp spacing between tabs. -->
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包含您的 TabLayout 的布局:
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="@dimen/tab_spacing_half"/>
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在styles.xml 中将此添加到您的主题中:
<item name="tabBackground">@drawable/tab_background</item>
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drawable-nodpi\tab_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:drawable="@drawable/tab_background_selected"
android:state_selected="true" />
<item
android:drawable="@drawable/tab_background_unselected"
android:state_selected="false"
android:state_focused="false"
android:state_pressed="false" />
</selector>
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drawable-nodpi\tab_background_selected.xml:
<?xml version="1.0" encoding="utf-8"?>
<layer-list
xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:left="@dimen/tab_spacing_half"
android:right="@dimen/tab_spacing_half"
android:top="@dimen/tab_spacing_half"
android:bottom="@dimen/tab_spacing_half">
<shape
android:shape="rectangle">
<corners
android:radius="@dimen/border_radius_small">
</corners>
<stroke
android:width="@dimen/divider_height_thick"
android:color="@color/white">
</stroke>
</shape>
</item>
</layer-list>
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......这就是诀窍所在。有效地,item根据您的@dimen/tab_spacing_half值将您的背景形状包裹在“填充”中。最后...
drawable-nodpi\tab_background_unselected.xml:
<?xml version="1.0" encoding="utf-8"?>
<layer-list
xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:left="@dimen/tab_spacing_half"
android:right="@dimen/tab_spacing_half"
android:top="@dimen/tab_spacing_half"
android:bottom="@dimen/tab_spacing_half">
<shape
android:shape="rectangle">
<corners
android:radius="@dimen/border_radius_small">
</corners>
<stroke
android:width="@dimen/divider_height_thin"
android:color="@color/white">
</stroke>
</shape>
</item>
</layer-list>
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小智 7
这是@Todor Kostov 答案的 Kotlin 版本。
for (i in 0 until applicationList_tabLayout.tabCount) {
val tab = (applicationList_tabLayout.getChildAt(0) as ViewGroup).getChildAt(i)
val p = tab.layoutParams as ViewGroup.MarginLayoutParams
p.setMargins(10, 0, 10, 0)
tab.requestLayout()
}
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@Todor Kostov 回答得很好,但是选项卡的中心被滑开了,因为最后一个选项卡也有边距。
所以使用mTabLayout.getTabCount() - 1而不是仅仅使用mTabLayout.getCodeCount().
for(int i=0; i < mTabLayout.getTabCount() - 1; i++) {
View tab = ((ViewGroup) mTabLayout.getChildAt(0)).getChildAt(i);
ViewGroup.MarginLayoutParams p = (ViewGroup.MarginLayoutParams) tab.getLayoutParams();
p.setMargins(0, 0, 50, 0);
tab.requestLayout();
}
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