是的,这是可能的包装标签指示的标题设置填充为0
public void wrapTabIndicatorToTitle(TabLayout tabLayout, int externalMargin, int internalMargin) {
View tabStrip = tabLayout.getChildAt(0);
if (tabStrip instanceof ViewGroup) {
ViewGroup tabStripGroup = (ViewGroup) tabStrip;
int childCount = ((ViewGroup) tabStrip).getChildCount();
for (int i = 0; i < childCount; i++) {
View tabView = tabStripGroup.getChildAt(i);
//set minimum width to 0 for instead for small texts, indicator is not wrapped as expected
tabView.setMinimumWidth(0);
// set padding to 0 for wrapping indicator as title
tabView.setPadding(0, tabView.getPaddingTop(), 0, tabView.getPaddingBottom());
// setting custom margin between tabs
if (tabView.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) tabView.getLayoutParams();
if (i == 0) {
// left
settingMargin(layoutParams, externalMargin, internalMargin);
} else if (i == childCount - 1) {
// right
settingMargin(layoutParams, internalMargin, externalMargin);
} else {
// internal
settingMargin(layoutParams, internalMargin, internalMargin);
}
}
}
tabLayout.requestLayout();
}
}
private void settingMargin(ViewGroup.MarginLayoutParams layoutParams, int start, int end) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
layoutParams.setMarginStart(start);
layoutParams.setMarginEnd(end);
layoutParams.leftMargin = start;
layoutParams.rightMargin = end;
} else {
layoutParams.leftMargin = start;
layoutParams.rightMargin = end;
}
}
编辑:作为com.android.support:design:28.0.0
的,你可以很容易地调整,现在的指标为标签设置:
app:tabIndicatorFullWidth="false"
编辑2019年7月:使用androidX依赖com.google.android.material:material:x.x.x
包裹标签指示器宽度相对于标签标题和添加右填充有标签的标题和与标签指示器右边距。
public class TabLayoutActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab_layout);
TabLayout tabs = (TabLayout) findViewById(R.id.tabs);
tabs.setTabTextColors(Color.parseColor("#727272"), Color.parseColor("#305b0d"));
ViewPager pager = (ViewPager) findViewById(R.id.pager);
TabsPagerAdapter adapter = new TabsPagerAdapter(getSupportFragmentManager());
pager.setAdapter(adapter);
tabs.setupWithViewPager(pager);
wrapTabIndicatorToTitle(tabs,20,20);
}
public void wrapTabIndicatorToTitle(TabLayout tabLayout, int externalMargin, int internalMargin) {
View tabStrip = tabLayout.getChildAt(0);
if (tabStrip instanceof ViewGroup) {
ViewGroup tabStripGroup = (ViewGroup) tabStrip;
int childCount = ((ViewGroup) tabStrip).getChildCount();
for (int i = 0; i < childCount; i++) {
View tabView = tabStripGroup.getChildAt(i);
//set minimum width to 0 for instead for small texts, indicator is not wrapped as expected
tabView.setMinimumWidth(0);
// set padding to 0 for wrapping indicator as title
tabView.setPadding(0, tabView.getPaddingTop(), 40, tabView.getPaddingBottom());
// setting custom margin between tabs
if (tabView.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) tabView.getLayoutParams();
if (i == 0) {
// left
setMargin(layoutParams, externalMargin, internalMargin);
} else if (i == childCount - 1) {
// right
setMargin(layoutParams, internalMargin, externalMargin);
} else {
// internal
setMargin(layoutParams, internalMargin, internalMargin);
}
}
}
tabLayout.requestLayout();
}
}
private void setMargin(ViewGroup.MarginLayoutParams layoutParams, int start, int end) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
layoutParams.setMarginStart(start);
layoutParams.setMarginEnd(end);
} else {
layoutParams.leftMargin = start;
layoutParams.rightMargin = end;
}
}
}
作为支持库28,你可以做到以下几点:
app:tabIndicatorFullWidth="false"
app:tabPaddingStart="25dp"
app:tabPaddingEnd="25dp"
您可以设置影响标签指示所需填充。
另外你现在可以这样做:
app:tabIndicator="@drawable/tab_indicator"
这将设置一个自定义绘制的指标。
例如自定义绘制的:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@color/colorPrimary"/>
<corners android:radius="5dp"/>
</shape>
如果你不需要带比文字更小,那么这应该工作:
public static void reduceMarginsInTabs(TabLayout tabLayout, int marginOffset) {
View tabStrip = tabLayout.getChildAt(0);
if (tabStrip instanceof ViewGroup) {
ViewGroup tabStripGroup = (ViewGroup) tabStrip;
for (int i = 0; i < ((ViewGroup) tabStrip).getChildCount(); i++) {
View tabView = tabStripGroup.getChildAt(i);
if (tabView.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
((ViewGroup.MarginLayoutParams) tabView.getLayoutParams()).leftMargin = marginOffset;
((ViewGroup.MarginLayoutParams) tabView.getLayoutParams()).rightMargin = marginOffset;
}
}
tabLayout.requestLayout();
}
}
为了增加点,你可以检查每个标题的文字大小。
简短的回答是“不”。这是解释。
有内TabLayout私有类SlidingTabStrip
绘制指标
@Override
public void draw(Canvas canvas) {
super.draw(canvas);
// Thick colored underline below the current selection
if (mIndicatorLeft >= 0 && mIndicatorRight > mIndicatorLeft) {
canvas.drawRect(mIndicatorLeft, getHeight() - mSelectedIndicatorHeight,
mIndicatorRight, getHeight(), mSelectedIndicatorPaint);
}
}
我相信mIndicatorLeft和mIndicatorRight是你所需要的。这些字段在同一个班级设置:
private void setIndicatorPosition(int left, int right) {
if (left != mIndicatorLeft || right != mIndicatorRight) {
// If the indicator's left/right has changed, invalidate
mIndicatorLeft = left;
mIndicatorRight = right;
ViewCompat.postInvalidateOnAnimation(this);
}
}
其中左和右参数计算在下一方法:
private void updateIndicatorPosition() {
final View selectedTitle = getChildAt(mSelectedPosition);
int left, right;
if (selectedTitle != null && selectedTitle.getWidth() > 0) {
left = selectedTitle.getLeft();
right = selectedTitle.getRight();
if (mSelectionOffset > 0f && mSelectedPosition < getChildCount() - 1) {
// Draw the selection partway between the tabs
View nextTitle = getChildAt(mSelectedPosition + 1);
left = (int) (mSelectionOffset * nextTitle.getLeft() +
(1.0f - mSelectionOffset) * left);
right = (int) (mSelectionOffset * nextTitle.getRight() +
(1.0f - mSelectionOffset) * right);
}
} else {
left = right = -1;
}
setIndicatorPosition(left, right);
}
而最糟糕的事情是,在TabLayout SlidingTabStrip领域是私人和决赛。
private final SlidingTabStrip mTabStrip;
我不明白它是如何可能实现你所需要的,而无需创建全新TabLayout。
一个简单的解决方法是:
tabLayout.setTabIndicatorFullWidth(false);
但是,它的工作原理与像最新的依赖
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:design:28.0.0'
我注意到肯定需要的SDK版本,但你可以直接在XML文件中做到这一点,添加使用的应用程序的命名空间填充属性。 只是让你TabLayout看起来是这样的:
<android.support.design.widget.TabLayout
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/tab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
...
app:tabPaddingEnd="0dp"
app:tabPaddingStart="0dp"
</android.support.design.widget.TabLayout>
您可以将您的父母辣油的xmlns:app="http://schemas.android.com/apk/res-auto"
太多,但它的您的选择:)
由于莱昂他的回答,导致我用XML来实现这一目标。
我试过2个小时的各种解决方案,但这些都不拥有完美的效果。
问题就出在TabView的空白区 - 即使我设置其填充为全0,
不同的标签仍然有不同的填充,因此,其TextView
内的文本的大小而变化。
然后我发现这个库,完美的解决了这个问题。
https://github.com/H07000223/FlycoTabLayout
正如@Stas Melnychenko说,我们可能无法做到这一点,除非我们重新写一个TabLayout
。而这个图书馆里重新写一个TabLayout
...
您可以使用样式做。
在布局XML:
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
style="@style/AppTabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
在styles.xml:
<style name="AppTabLayout" parent="Widget.Design.TabLayout">
<item name="android:layout_marginLeft">40dp</item>
<item name="android:layout_marginRight">40dp</item>
</style>
有一个叫tabIndicatorFullWidth内android.support.design.widget.TabLayout属性
<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabBackground="@color/colorPrimary"
app:tabIndicatorFullWidth="false" // tested okay on 8.1 , 6.0.1
app:tabTextColor="@color/colorAccent"
app:tabTextAppearance="@style/CampusTabText"
android:minHeight="?attr/actionBarSize"
app:tabMaxWidth="0dp"
app:tabGravity="fill"
app:tabMode="fixed" />