TabLayout设置指示器的宽度

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TabLayout的指示器的高度、颜色都可以设置，但是宽度需要自己来实现

在TabLayout view初始化后，设置

/** * @date:2017/11/9/009 * @author:平sir * @desc:  设置tablayout的指示器的宽度 */private void initView() {    mTabLayout.post(new Runnable() {        @Override        public void run() {            setIndicator(mTabLayout, 40, 40);        }    });}

具体的设置方法为

/** * @date:2017/11/10/010 * @author:平sir * @desc:  设置tab指示器的宽度 */public void setIndicator(TabLayout tabs, int leftDip, int rightDip) {    Class<?> tabLayout = tabs.getClass();    Field tabStrip = null;    try {        tabStrip = tabLayout.getDeclaredField("mTabStrip");    } catch (NoSuchFieldException e) {        e.printStackTrace();    }    tabStrip.setAccessible(true);    LinearLayout llTab = null;    try {        llTab = (LinearLayout) tabStrip.get(tabs);    } catch (IllegalAccessException e) {        e.printStackTrace();    }    int left = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, leftDip, Resources.getSystem().getDisplayMetrics());    int right = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, rightDip, Resources.getSystem().getDisplayMetrics());    for (int i = 0; i < llTab.getChildCount(); i++) {        View child = llTab.getChildAt(i);        child.setPadding(0, 0, 0, 0);        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.MATCH_PARENT, 1);        params.leftMargin = left;        params.rightMargin = right;        child.setLayoutParams(params);        child.invalidate();    }}

这样我们就能设置指示器的宽度了

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