修改TabLayout下滑指导线的宽度
如果是和你设置的字体宽度一样宽,可以直接写该类 Reflex
然后在TabLayout初始化的地方调用该方法
mReflex = new Reflex();
mReflex.reflex(mTabLayout);
public class Reflex {
public void reflex(final TabLayout tabLayout){
//了解源码得知 线的宽度是根据 tabView的宽度来设置的
tabLayout.post(new Runnable() {
@Override
public void run() {
try {
//拿到tabLayout的mTabStrip属性
LinearLayout mTabStrip = (LinearLayout) tabLayout.getChildAt(0);
int dp10 = dip2px(tabLayout.getContext(), 10);
for (int i = 0; i < mTabStrip.getChildCount(); i++) {
View tabView = mTabStrip.getChildAt(i);
//拿到tabView的mTextView属性 tab的字数不固定一定用反射取mTextView
Field mTextViewField = tabView.getClass().getDeclaredField("mTextView");
mTextViewField.setAccessible(true);
TextView mTextView = (TextView) mTextViewField.get(tabView);
tabView.setPadding(0, 5, 0, 5);
//因为我想要的效果是 字多宽线就多宽,所以测量mTextView的宽度
int width = 0;
width = mTextView.getWidth()+20;
if (width == 0) {
mTextView.measure(0, 0);
width = mTextView.getMeasuredWidth();
}
//设置tab左右间距为10dp 注意这里不能使用Padding 因为源码中线的宽度是根据
tabView的宽度来设置的
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams)
tabView.getLayoutParams();
params.width = width ;
params.leftMargin = dp10;
params.rightMargin = dp10;
tabView.setLayoutParams(params);
tabView.invalidate();
}
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
});
}
}
修改TabLayout的下划线高度
可通过xml代码修改app:tabIndicatorHeight="3dp"
<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@color/colorWhite"
app:layout_constraintDimensionRatio="W,0.1:1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/iv_down"
app:layout_constraintTop_toBottomOf="@+id/toolbar"
app:tabIndicatorColor="@color/colorPrimary"
app:tabMode="scrollable"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
app:tabPaddingEnd="15dp"
app:tabIndicatorHeight="3dp"
app:tabPaddingStart="15dp"
app:tabSelectedTextColor="@color/colorPrimary"
app:tabTextColor="@color/colorNormalText"/>