/**
* 通过反射{@link TabLayout}设置下划线(Indicator)宽度,字多宽线就多宽,参阅 https://blog.csdn.net/waplyj/article/details/81068127
*/
public static void setTabLayoutIndicator(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 {
Field field = tabLayout.getClass().getDeclaredField("mTabStrip");
field.setAccessible(true);
//拿到tabLayout的mTabStrip属性
LinearLayout tabStrip = (LinearLayout) field.get(tabLayout);
for (int i = 0, count = tabStrip.getChildCount(); i < count; i++) {
View tabView = tabStrip.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 textView = (TextView) mTextViewField.get(tabView);
tabView.setPadding(0, 0, 0, 0);
//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 textWidth = 0;
textWidth = textView.getWidth();
if (textWidth == 0) {
textView.measure(0, 0);
textWidth = textView.getMeasuredWidth();
}
int tabWidth = 0;
tabWidth = tabView.getWidth();
if (tabWidth == 0) {
tabView.measure(0, 0);
tabWidth = tabView.getMeasuredWidth();
}
LinearLayout.LayoutParams tabViewParams = (LinearLayout.LayoutParams) tabView.getLayoutParams();
int margin = (tabWidth - textWidth) / 2;
//LogUtils.d("textWidth=" + textWidth + ", tabWidth=" + tabWidth + ", margin=" + margin);
tabViewParams.leftMargin = margin;
tabViewParams.rightMargin = margin;
tabView.setLayoutParams(tabViewParams);
}
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
});
}
/**
* 设置{@link TabLayout}的每项之间的分隔线
*/
public static void setTabLayoutDivider(TabLayout tabLayout) {
setTabLayoutDivider(tabLayout, 12);
}
/**
* 设置{@link TabLayout}的每项之间的分隔线
*/
public static void setTabLayoutDivider(TabLayout tabLayout, int paddingDip) {
LinearLayout mTabStrip = (LinearLayout) tabLayout.getChildAt(0);
mTabStrip.setShowDividers(LinearLayout.SHOW_DIVIDER_MIDDLE);
mTabStrip.setDividerPadding(UIUtils.dip2Px(paddingDip));
mTabStrip.setDividerDrawable(UIUtils.getDrawable(R.drawable.xb_divider_line_vertical));
}
主要参考了https://blog.csdn.net/u013134391/article/details/70833903的方法,原作者的在fill模式下不生效,margin的设置部分我做了一点修改。