【TabLayout】记录关于TabLayout的一些用法

1.XML文件

<android.support.design.widget.TabLayout
        android:id="@+id/tabLayout"
        android:layout_width="210dp"
        android:layout_height="44dp"
        android:background="@color/white"
        app:tabBackground="@android:color/transparent"
        app:tabGravity="fill"
        app:tabIndicatorColor="@color/retech_appyes"
        app:tabIndicatorFullWidth="false"
        app:tabIndicatorHeight="1.5dp"
        app:tabMode="scrollable"
        app:tabMaxWidth="0dp"
        app:tabRippleColor="@android:color/transparent"
        app:tabSelectedTextColor="@color/retech_appyes"
        app:tabTextAppearance="@style/retech_tabLayout_textSize"
        app:tabTextColor="@color/retech_appnot" />

 

• 1.适配Paid,标签平分问题 app:tabMaxWidth="0dp"
• 2.取消点击阴影效果 app:tabRippleColor="@android:color/transparent"或者TabLayout.setTabRippleColor(null);即可取消点击阴影效果
• 3.指示器长度是否跟字体宽度一样长 app:tabIndicatorFullWidth="false"
• 4.设置文字大小 app:tabTextAppearance="@style/retech_tabLayout_textSize"

 

2.Styles文件

<!-- TabLayout 字体大小  -->
<style name="retech_tabLayout_textSize">
    <item name="android:textSize">15sp</item>
</style>

3.自定义指示器长度

public static 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 dp30 = DpUtils.dip2px(tabLayout.getContext(), 30);

                    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, 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 width = 0;
                        width = mTextView.getWidth();
                        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 = dp30;
                        params.rightMargin = dp30;
                        tabView.setLayoutParams(params);

                        tabView.invalidate();
                    }

                } catch (NoSuchFieldException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
            }
        });

    }