aymoreyn/MagicIndicator

A powerful, customizable and extensible ViewPager indicator framework —— 强大、可定制、易扩展的 ViewPager 指示器框架。轻轻松松打造各式各样的指示效果。支持角标功能，可将任意的 View 设置成角标。无第三方依赖，兼容 Android 4.0+（更低版本未测试）。进入我的博客 http://www.jianshu.com/users/f0a3fb1abaed 查看关于 MagicIndicator 的更多文章 >>>

MagicIndicator

A powerful, customizable and extensible ViewPager indicator framework.

Usage

Simple steps, you can integrate MagicIndicator:

1. checkout out MagicIndicator, which contains source code and demo
2. import module magicindicator and add dependency:

compile project(':magicindicator')

3. add magicindicator to your layout xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="net.lucode.hackware.magicindicatordemo.MainActivity">

    <net.lucode.hackware.magicindicator.MagicIndicator
        android:id="@+id/magic_indicator"
        android:layout_width="match_parent"
        android:layout_height="40dp" />

    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

</LinearLayout>

4. find magicindicator through code, initialize it:

MagicIndicator magicIndicator = (MagicIndicator) findViewById(R.id.magic_indicator);
CommonNavigator commonNavigator = new CommonNavigator(this);
commonNavigator.setAdapter(new CommonNavigatorAdapter() {

    @Override
    public int getCount() {
        return mTitleDataList == null ? 0 : mTitleDataList.size();
    }

    @Override
    public IPagerTitleView getTitleView(Context context, final int index) {
        ColorTransitionPagerTitleView colorTransitionPagerTitleView = new ColorTransitionPagerTitleView(context);
        colorTransitionPagerTitleView.setNormalColor(Color.GRAY);
        colorTransitionPagerTitleView.setSelectedColor(Color.BLACK);
        colorTransitionPagerTitleView.setText(mTitleDataList.get(index));
        colorTransitionPagerTitleView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mViewPager.setCurrentItem(index);
            }
        });
        return colorTransitionPagerTitleView;
    }

    @Override
    public IPagerIndicator getIndicator(Context context) {
        LinePagerIndicator indicator = new LinePagerIndicator(context);
        indicator.setMode(LinePagerIndicator.MODE_WRAP_CONTENT);
        return indicator;
    }
});
magicIndicator.setNavigator(commonNavigator);

5. bind magicindicator to ViewPager:

SimpleViewPagerDelegate.with(magicIndicator, mViewPager).delegate();

Extend

MagicIndicator is easy to extend:

1. extend IPagerTitleView to custom tab:

public class MyPagerTitleView extends View implements IPagerTitleView {

    public MyPagerTitleView(Context context) {
        super(context);
    }

    @Override
    public void onLeave(int index, int totalCount, float leavePercent, boolean leftToRight) {
    }

    @Override
    public void onEnter(int index, int totalCount, float enterPercent, boolean leftToRight) {
    }

    @Override
    public void onSelected(int index, int totalCount) {
    }

    @Override
    public void onDeselected(int index, int totalCount) {
    }
}

2. extend IPagerIndicator to custom indicator:

public class MyPagerIndicator extends View implements IPagerIndicator {

    public MyPagerIndicator(Context context) {
        super(context);
    }

    @Override
    public void onPageSelected(int position) {
    }

    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    }

    @Override
    public void onPageScrollStateChanged(int state) {
    }

    @Override
    public void onPositionDataProvide(List<PositionData> dataList) {
    }
}

3. use CommonPagerTitleView to load custom layout xml.

Now, enjoy yourself!

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Who developed?

hackware1993@gmail.com

cfb1993@163.com

QQ Group：373360748

An intermittent perfectionist.

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