NestedScrollView嵌套ViewPager

NestedScrollView嵌套ViewPager

效果图

重写ViewPager

package com.kongqw.kbox.view;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.View;

public class WrapContentHeightViewPager extends ViewPager {
    public WrapContentHeightViewPager(Context context) {
        super(context);
    }

    public WrapContentHeightViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        int height = 0;
        for (int i = 0; i < getChildCount(); i++) {
            View child = getChildAt(i);
            child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            int h = child.getMeasuredHeight();
            if (h > height) height = h;
        }
        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

XML布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.kongqw.kbox.activity.ResumeActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="250dp"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@mipmap/resume" />

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/AppTheme.PopupOverlay"
                app:title="Toolbar">

            </android.support.v7.widget.Toolbar>

        </android.support.design.widget.CollapsingToolbarLayout>

        <android.support.design.widget.TabLayout
            android:id="@+id/tabLayout"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:tabIndicatorColor="#FFFFFFFF"
            app:tabSelectedTextColor="#FF888888"
            app:tabTextColor="#FFFFFFFF" />

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView
        android:id="@+id/nestedScrollView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <com.kongqw.kbox.view.WrapContentHeightViewPager
            android:id="@+id/viewPager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </android.support.v4.widget.NestedScrollView>

</android.support.design.widget.CoordinatorLayout>

主类

package com.kongqw.kbox.activity;

import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;

import com.kongqw.kbox.R;
import com.kongqw.kbox.adapter.ResumeAdapter;

public class ResumeActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_resume);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        // 设置返回主页的按钮
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        // TabLayout
        TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout);
        // ViewPager
        ViewPager mPager = (ViewPager) findViewById(R.id.viewPager);
        ResumeAdapter mPagerAdapter = new ResumeAdapter(getSupportFragmentManager());
        mPager.setAdapter(mPagerAdapter);
        tabLayout.setupWithViewPager(mPager);
        // ViewPager切换时NestedScrollView滑动到顶部
        mPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }

            @Override
            public void onPageSelected(int position) {
                ((NestedScrollView) findViewById(R.id.nestedScrollView)).scrollTo(0, 0);
            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
    }
}

Adapter

package com.kongqw.kbox.adapter;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import com.kongqw.kbox.fragment.ResumeBasicFragment;
import com.kongqw.kbox.fragment.ResumeProjectsExperienceFragment;
import com.kongqw.kbox.fragment.ResumeSkillFragment;
import com.kongqw.kbox.fragment.ResumeWorksExperienceFragment;

/**
 * Created by kongqw on 2016/3/7.
 */
public class ResumeAdapter extends FragmentPagerAdapter {

    public ResumeAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        Fragment fragment = null;
        if (0 == position) {
            fragment = new ResumeBasicFragment();
        } else if (1 == position) {
            fragment = new ResumeSkillFragment();
        } else if (2 == position) {
            fragment = new ResumeWorksExperienceFragment();
        } else if (3 == position) {
            fragment = new ResumeProjectsExperienceFragment();
        }
        return fragment;
    }

    @Override
    public int getCount() {
        return 4;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        switch (position) {
            case 0:
                return "TAB 1";
            case 1:
                return "TAB 2";
            case 2:
                return "TAB 3";
            case 3:
                return "TAB 4";
        }
        return null;
    }
}