安卓和iOS實現(xiàn)上滑停靠頂部懸浮框

一言不合就上圖

Android_view.gif
iOS_view.gif

1:安卓

很早以前寫過一個類似的效果，不過當(dāng)時的做法是：

  • 在FrameLayout中布局listview和你想要在滑動時顯示在頂部的布局并將屬性設(shè)置為invisible。
  • 在代碼中動態(tài)添加想要懸停的布局為listview頭布局(也就是懸停部分寫兩遍)。
  • 監(jiān)聽listview的滾動(滾動時顯示在布局中隱藏的部分達到懸停效果)
    @Override
     public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                if (firstVisibleItem >= 1) {
                    //懸浮布局顯示
                    invis.setVisibility(View.VISIBLE);
                } else {
                    invis.setVisibility(View.GONE);
                }
            }

缺點：

  • 布局不夠靈活
  • 不能處理事件(如果想要作為多個fragment的滑動指示器不能實現(xiàn))。

安卓5.0后實現(xiàn)這樣的布局就很簡單了而且還能處理各種事件

做法：

  • layout代碼
      <?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"
      android:orientation="vertical"
      android:background="@color/white"
      android:layout_width="match_parent"
      android:layout_height="match_parent">
      <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white"
        app:elevation="0dp">
        <!--
            app:layout_scrollFlags="scroll"
            加此屬性可滾動  不加就固定在頂部-->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:gravity="center"
            app:layout_scrollFlags="scroll"
            android:background="@color/main_Green">

            <TextView
                android:id="@+id/nav_tv_title"
                style="@style/ShowTv1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="在線測評"
                android:textColor="@color/white" />
        </LinearLayout>

        <com.bigkoo.convenientbanner.ConvenientBanner
            android:id="@+id/banner"
            android:layout_width="match_parent"
            android:layout_height="170dp"
            android:background="@mipmap/banner_loading"
            app:canLoop="true"
            app:layout_scrollFlags="scroll" />
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="1px"
            android:background="@android:color/darker_gray" />
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="4dp"
            android:background="#f0f0f0"></LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="130dp"
            android:orientation="horizontal">
            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="130dp"
                android:layout_weight="1"
                android:id="@+id/ll_consult"
                android:gravity="center_horizontal"
                android:background="@drawable/btn_bg_main"
                android:orientation="vertical">
                <ImageView
                    android:layout_width="80dp"
                    android:layout_height="80dp"
                    android:src="@mipmap/consult_icon"/>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginLeft="1dp"
                    android:gravity="center_horizontal"
                    android:orientation="vertical">
                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="心理咨詢師考試"
                        android:textColor="#3399cc"
                        style="@style/ShowTv2"/>
                    <TextView
                        android:layout_marginTop="5dp"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="做自己的咨詢師"
                        android:textColor="@color/default_gray"
                        style="@style/ShowTv4"/>
                </LinearLayout>

            </LinearLayout>
            <ImageView
                android:layout_width="1px"
                android:layout_height="match_parent"
                android:background="@android:color/darker_gray" />
            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:orientation="vertical">

                <LinearLayout
                    android:id="@+id/ll_hunyin"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:background="@drawable/btn_bg_main"
                    android:gravity="center_vertical"
                    android:orientation="horizontal"
                    android:paddingLeft="3dp"
                    android:paddingRight="3dp">

                    <ImageView
                        android:id="@+id/iv_home_icon_1"
                        android:layout_width="44dp"
                        android:layout_height="44dp"
                        android:src="@mipmap/hunyin_icon" />

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dp"
                        android:orientation="vertical">

                        <TextView
                            android:id="@+id/tv_home_lable_1"
                            style="@style/ShowTv3"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:textColor="#f11e8a"
                            android:text="婚姻家庭咨詢師" />

                        <TextView
                            android:id="@+id/tv_home_contemt_1"
                            style="ShowTv5"
                            android:layout_marginTop="5dp"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="為幸福服務(wù)"
                            android:textColor="@color/default_gray" />


                    </LinearLayout>
                </LinearLayout>

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="1px"
                    android:background="@android:color/darker_gray" />

                <LinearLayout
                    android:id="@+id/ll_yingyang"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:background="@drawable/btn_bg_main"
                    android:focusable="true"
                    android:gravity="center_vertical"
                    android:orientation="horizontal"
                    android:paddingLeft="3dp"
                    android:paddingRight="3dp">

                    <ImageView
                        android:id="@+id/iv_home_icon_3"
                        android:layout_width="44dp"
                        android:layout_height="44dp"
                        android:focusable="false"
                        android:src="@mipmap/yingyang_icon1" />

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dp"
                        android:focusable="false"
                        android:orientation="vertical">

                        <TextView
                            android:id="@+id/tv_home_lable_3"
                            style="ShowTv3"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:focusable="false"
                            android:textColor="#ff742f"
                            android:text="營養(yǎng)師資格證" />

                        <TextView
                            android:id="@+id/tv_home_contemt_3"
                            style="ShowTv5"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:focusable="false"
                            android:text="與健康同行"
                            android:layout_marginTop="5dp"
                            android:textColor="@color/default_gray" />
                    </LinearLayout>
                </LinearLayout>
            </LinearLayout>

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="4dp"
            android:background="#f0f0f0"></LinearLayout>

        <View
            android:id="@+id/line_divider"
            android:layout_width="match_parent"
            android:layout_height="1px"
            android:background="@android:color/darker_gray"
            android:visibility="gone"
            />
    </android.support.design.widget.AppBarLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/vertical_recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        />

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

注意點：

  • 1：新屬性app:layout_scrollFlags的使用，對應(yīng)的值為：scroll，enterAlways，enterAlwaysCollapsed，snap，exitUntilCollapsed；也可以在代碼中通過setScrollFlags(int)方法使用，app:layout_scrollFlags="scroll"就會跟著一起滾動如果不設(shè)置則在滑動的時候會懸停在頂部。
  • 2： 下面必須使用RecyclerView。

頁面代碼

package com.ygxinjian.anhui.test_online.Fragment;


import android.content.Context;
import android.support.design.widget.AppBarLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.bigkoo.convenientbanner.ConvenientBanner;
import com.bigkoo.convenientbanner.adapter.CBPageAdapter;
import com.bigkoo.convenientbanner.adapter.CBViewHolderCreator;
import com.bigkoo.convenientbanner.listener.OnItemClickListener;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.ygxinjian.anhui.test_online.Activity.Consult_Test_Activity;
import com.ygxinjian.anhui.test_online.Activity.Consult_Test_intros_Activity;
import com.ygxinjian.anhui.test_online.Controller.NetworkImageHolderView;
import com.ygxinjian.anhui.test_online.Model.JsEntry;
import com.ygxinjian.anhui.test_online.R;
import com.ygxinjian.anhui.test_online.TestOnlineApplication;
import com.ygxinjian.anhui.test_online.View.DividerItemDecoration;
import com.ygxinjian.anhui.test_online.utils.DevUtil;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;


/**
 * Created by handongqiang on 16/12/29.
 */

public class Fragment_Home extends BaseFragment implements View.OnClickListener{
    private static final String TAG = "Fragment_Home";
    private ConvenientBanner mConvenientBanner;
    private RecyclerView mRecyclerView;
    private AppBarLayout mAppBarLayout;
    private View mLine;
    private NewsAdapter mAdapter;
    private LinearLayout ll_consult_click,ll_hunying_click,ll_yingyang_click;
    List<String> mData;
    private String[] images = {"http://img2.imgtn.bdimg.com/it/u=3093785514,1341050958&fm=21&gp=0.jpg",
            "http://img2.3lian.com/2014/f2/37/d/40.jpg",
            "http://img2.3lian.com/2014/f2/37/d/39.jpg",
            "http://f.hiphotos.baidu.com/image/h%3D200/sign=1478eb74d5a20cf45990f9df460b4b0c/d058ccbf6c81800a5422e5fdb43533fa838b4779.jpg",
            "http://f.hiphotos.baidu.com/image/pic/item/09fa513d269759ee50f1971ab6fb43166c22dfba.jpg"
    };

    @Override
    public View initView() {
        View view = View.inflate(mActivity, R.layout.fragment_home, null);

        ll_consult_click = (LinearLayout) view.findViewById(R.id.ll_consult);
        ll_hunying_click = (LinearLayout) view.findViewById(R.id.ll_hunyin);
        ll_yingyang_click = (LinearLayout) view.findViewById(R.id.ll_yingyang);
        ll_consult_click.setOnClickListener(this);
        ll_hunying_click.setOnClickListener(this);
        ll_yingyang_click.setOnClickListener(this);

        mConvenientBanner = (ConvenientBanner) view.findViewById(R.id.banner);
        mAppBarLayout = (AppBarLayout) view.findViewById(R.id.appbar_layout);
        mLine = view.findViewById(R.id.line_divider);
        mRecyclerView = (RecyclerView) view.findViewById(R.id.vertical_recyclerView);
        mRecyclerView.addItemDecoration(new DividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL_LIST));
        mAdapter = new NewsAdapter(getActivity());
        //添加頭尾布局
//        mAdapter.addHeaderView(getView());
        mConvenientBanner.setPages(new CBViewHolderCreator<NetworkImageHolderView>() {
            @Override
            public NetworkImageHolderView createHolder() {
                return new NetworkImageHolderView();
            }
        }, Arrays.asList(images))
                .setPageIndicator(new int[]{R.mipmap.ic_page_indicator, R.mipmap.ic_page_indicator_focused})
                .setPageIndicatorAlign(ConvenientBanner.PageIndicatorAlign.CENTER_HORIZONTAL);

        initAdapter();
        initBanner();
        initLine();
        return view;
    }

    private void initLine() {
        mAppBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
            @Override
            public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
                if(Math.abs(verticalOffset) >= mAppBarLayout.getTotalScrollRange()){
                    mLine.setVisibility(View.VISIBLE);
                }else{
                    mLine.setVisibility(View.GONE);
                }
            }
        });
    }

    private void initBanner() {
        mConvenientBanner.startTurning(3000);
        // 進入Banner
        mConvenientBanner.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(int position) {
                DevUtil.showShortInfo(mActivity,"心理咨詢師考試");
            }
        });

    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.ll_consult:
                DevUtil.gotoActivity(mActivity, Consult_Test_Activity.class);
                break;
            case R.id.ll_hunyin:
                DevUtil.gotoActivity(mActivity, Consult_Test_intros_Activity.class);
                break;
            case R.id.ll_yingyang:
                DevUtil.showShortInfo(mActivity,"題庫整理中");
                break;
        }
    }

    /**
     * 模擬首頁數(shù)據(jù)
     * @return
     */
    private List<JsEntry> mockData(){
        List<JsEntry> data = new ArrayList<>();
        JsEntry jsEntry = new JsEntry();
        jsEntry.time = "15小時前";
        jsEntry.title = "這些情商的技巧，你是不是都掌握了？";
        jsEntry.authorName = "JayChou";
        jsEntry.cover ="http://upload-images.jianshu.io/upload_images/2785318-5306a632b46a8c27.jpg?imageMogr2/auto-orient/strip|imageView2/2/w/1020/q/80";
        JsEntry jsEntry2 = new JsEntry();
        jsEntry2.time = "10小時前";
        jsEntry2.title = "除了陰謀，《錦繡未央》里還有哪些溫情？";
        jsEntry2.authorName = "菇?jīng)鏊茐?;
        jsEntry2.cover = "http://upload-images.jianshu.io/upload_images/2881988-b217e714eb05f88e.jpg?imageMogr2/auto-orient/strip|imageView2/2/w/1020/q/80";
        for (int i=0;i<20;i++){
            if(i % 2 == 0){
                data.add(jsEntry);
            }else{
                data.add(jsEntry2);
            }
        }
        return data;
    }


    /**
     * 設(shè)置RecyclerView屬性
     */
    private void initAdapter() {
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        mAdapter.openLoadAnimation();
        mRecyclerView.setAdapter(mAdapter);//設(shè)置adapter
        //設(shè)置item點擊事件
        mAdapter.setOnRecyclerViewItemClickListener(new BaseQuickAdapter.OnRecyclerViewItemClickListener() {
            @Override
            public void onItemClick(View view, int position) {
                Toast.makeText(mActivity, ""+position, Toast.LENGTH_SHORT).show();

            }
        });
    }
    /**
     * RecycleView的adapter
     */
    class NewsAdapter extends BaseQuickAdapter<JsEntry> {

        public NewsAdapter(Context context) {
            super(context,R.layout.news_label_item,mockData());
        }

        @Override
        public void convert(BaseViewHolder helper, JsEntry mData) {
            helper.setText(R.id.item_content, mData.title)
                    .setText(R.id.author_name, mData.authorName)
                    .setText(R.id.publish_time, mData.time);
            ImageLoader.getInstance().displayImage(mData.cover, (ImageView) helper.getView(R.id.cover));
        }
    }

}

至此安卓端這個簡單的效果就實現(xiàn)了

2：iOS端實現(xiàn)方法

思路：

  • 最底層為UIScrollView，布局上依次添加banner，懸停的UIView布局和Tableview.
  • 通過代碼判斷UIScrollView的滾動實現(xiàn)懸停

核心代碼：

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    //懸浮框
    if (_bottomScrollView.contentOffset.y < self.banner.bounds.size.height) {
        _bottomScrollView.delegate = nil;
        CGPoint contentOffsetPoint = _bottomScrollView.contentOffset;
        _bottomScrollView.contentOffset = contentOffsetPoint;
        _bottomScrollView.delegate = self;
        m_tabel.scrollEnabled =NO; //設(shè)置tableview 不能滾動
    }else if(_bottomScrollView.contentOffset.y > self.banner.bounds.size.height){
        m_tabel.scrollEnabled =YES;
        _bottomScrollView.delegate = nil;
        _bottomScrollView.contentOffset = CGPointMake(0, self.banner.bounds.size.height);
        _bottomScrollView.delegate = self;
    }
}
老規(guī)矩-喜歡就點個贊唄 T.T .gif
最后編輯于 ：
?著作權(quán)歸作者所有,轉(zhuǎn)載或內(nèi)容合作請聯(lián)系作者
【社區(qū)內(nèi)容提示】社區(qū)部分內(nèi)容疑似由AI輔助生成，瀏覽時請結(jié)合常識與多方信息審慎甄別。
平臺聲明：文章內(nèi)容（如有圖片或視頻亦包括在內(nèi)）由作者上傳并發(fā)布，文章內(nèi)容僅代表作者本人觀點，簡書系信息發(fā)布平臺，僅提供信息存儲服務(wù)。

相關(guān)閱讀更多精彩內(nèi)容

友情鏈接更多精彩內(nèi)容