開始逐漸領略到ItemDecoration的美~
今天讓我 使用 ItemDecoration 來完成 可推動的懸浮導航欄的效果，最終實現的效果如下圖：
具體實現步驟如下：
根據我前面的文章所講的RecyclerView的基本使用，我們先來完成基本的recyclerView：
第一步：布局里寫一個RecyclerView
第二步：實例化
recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
第三步：獲取所需的數據 (這里我們來個真實點的情景，去聯網請求數據)
/** * 聯網請求所需的url */ public String url="http://api.meituan.com/mmdb/movie/v2/list/rt/order/coming.json?ci=1&limit=12&token=&__vhost=api.maoyan.com&utm_campaign=AmovieBmovieCD-1&movieBundleVersion=6801&utm_source=xiaomi&utm_medium=android&utm_term=6.8.0&utm_content=868030022327462&net=255&dModel=MI%205&uuid=0894DE03C76F6045D55977B6D4E32B7F3C6AAB02F9CEA042987B380EC5687C43&lat=40.100673&lng=116.378619&__skck=6a375bce8c66a0dc293860dfa83833ef&__skts=1463704714271&__skua=7e01cf8dd30a179800a7a93979b430b2&__skno=1a0b4a9b-44ec-42fc-b110-ead68bcc2824&__skcy=sXcDKbGi20CGXQPPZvhCU3%2FkzdE%3D";//聯網獲取數據 getDataFromNet();/** * 使用okhttpUtils進行聯網請求數據 */ private void getDataFromNet() { OkHttpUtils. get() .url(url) .build() .execute(new StringCallback() { @Override public void onError(okhttp3.Call call, Exception e, int id) { Log.e("TAG", "聯網失敗" + e.getMessage()); } @Override public void onResponse(String response, int id) { Log.e("TAG", "聯網成功==" + response); //聯網成功后使用fastjson解析 processData(response); } }); }/** * 使用fastjson進行解析 * * @param json */ private void processData(String json) { //這里使用GsonFormat生成對應的bean類 JSONObject jsonObject = parseObject(json); String data = jsonObject.getString("data"); JSONObject dataObj = JSON.parseObject(data); String coming = dataObj.getString("coming"); List<WaitMVBean.DataBean.ComingBean> comingslist = parseArray(coming, WaitMVBean.DataBean.ComingBean.class); //測試是否解析數據成功 // String strTest = comingslist.get(0).getCat(); // Log.e("TAG", strTest + "222"); //解析數據成功,設置適配器--> } }第四步：解析數據成功后，創(chuàng)建并設置適配器,并傳遞相關數據
//解析數據成功,設置適配器 MyRecyclerAdapter adapter = new MyRecyclerAdapter( mContext,comingslist); recyclerView.setAdapter(adapter);
適配器：
public class MyRecyclerAdapter extends RecyclerView.Adapter { private final List<WaitMVBean.DataBean.ComingBean> comingslist; private final Context mContext; private final LayoutInflater mLayoutInflater; public MyRecyclerAdapter(Context mContext, List<WaitMVBean.DataBean.ComingBean> comingslist) { this.mContext = mContext; this.comingslist = comingslist; mLayoutInflater = LayoutInflater.from(mContext); } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { return new MyViewHolder(mLayoutInflater.inflate(R.layout.date_item, null)); } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { MyViewHolder myholder = (MyViewHolder) holder; myholder.setData(position); } @Override public int getItemCount() { return comingslist.size(); } class MyViewHolder extends RecyclerView.ViewHolder { private TextView mv_name; private TextView mv_dec; private TextView mv_date; private ImageView imageView; public MyViewHolder(View itemView) { super(itemView); mv_name = (TextView) itemView.findViewById(R.id.mv_name); mv_dec = (TextView) itemView.findViewById(R.id.mv_dec); mv_date = (TextView) itemView.findViewById(R.id.mv_date); imageView = (ImageView) itemView.findViewById(R.id.image); } public void setData(int position) { WaitMVBean.DataBean.ComingBean coming = comingslist.get(position); String name = coming.getNm(); mv_name.setText(name); String date = coming.getShowInfo(); mv_date.setText(date); String dec = coming.getScm(); mv_dec.setText(dec); //注：當你發(fā)下圖片無法打開是，做個字符串替換即可 String imagUrl = coming.getImg(); String newImagUrl = imagUrl.replaceAll("w.h", "50.80"); //使用Glide加載圖片 Glide.with(mContext) .load(newImagUrl) .into(imageView); } } }item的布局：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#ffffff" android:gravity="center_vertical" android:orientation="horizontal"> <ImageView android:id="@+id/image" android:layout_width="70dp" android:layout_height="110dp" android:layout_marginBottom="5dp" android:layout_marginLeft="10dp" android:layout_marginRight="8dp" android:layout_marginTop="5dp" /> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginLeft="6dp" android:layout_weight="1" android:orientation="vertical"> <TextView android:id="@+id/mv_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="神奇 主站蜘蛛池模板： 凉城县| 赣州市| 南郑县| 凤山市| 武山县| 瑞金市| 濮阳县| 衡山县| 垦利县| 江达县| 富川| 缙云县| 林西县| 和平县| 景德镇市| 北票市| 浏阳市| 乐东| 行唐县| 阿图什市| 柞水县| 安阳县| 佛冈县| 江都市| 启东市| 平利县| 怀柔区| 思南县| 张家口市| 甘泉县| 梁河县| 呼伦贝尔市| 社会| 景德镇市| 梁河县| 蓬莱市| 大竹县| 乃东县| 漠河县| 从江县| 乐山市|