仿京东分类模块左侧分类条目效果

来源：互联网发布：程序员的修真小说编辑：程序博客网时间：2024/05/28 15:20

import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.LinearLayout;import android.widget.ScrollView;import android.widget.TextView;import com.frame.R;import java.util.ArrayList;import java.util.List;/** * Created by syd on 2016/10/9. */public class TestActivity extends Activity {    ScrollView sv_test;    LinearLayout ll_test_contain;    List<String> goodsList = new ArrayList<String>();    List<TextView> textViewList = new ArrayList<>();    List<View> viewList = new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.test_activity_test);        initViews();        initData();    }    /**     * 初始化控件     */    private void initViews() {        sv_test = (ScrollView) findViewById(R.id.sv_test);        ll_test_contain = (LinearLayout) findViewById(R.id.ll_test_contain);    }    protected void initData() {        goodsList.add("常用分类");        goodsList.add("潮流女装");        goodsList.add("品牌男装");        goodsList.add("内衣配饰");        goodsList.add("家用电器");        goodsList.add("手机数码");        goodsList.add("电脑办公");        goodsList.add("个护化妆");        goodsList.add("母婴频道");        goodsList.add("食物生鲜");        goodsList.add("酒水饮料");        goodsList.add("家居家纺");        goodsList.add("酒水饮料");        goodsList.add("整车车品");        goodsList.add("运动户外");        goodsList.add("图书");        goodsList.add("钟表");        goodsList.add("居家生活");        goodsList.add("珠宝饰品");        goodsList.add("音像制品");        goodsList.add("家具建材");        goodsList.add("计生情趣");        goodsList.add("营养保健");        goodsList.add("奢侈礼品");        goodsList.add("生活服务");        goodsList.add("旅游出行");        //动态生成每一个条目        for (int i = 0; i <goodsList.size() ; i++) {            View view = getLayoutInflater().inflate(R.layout.test_item_scrollview,null);            view.setOnClickListener(textOnClickListener);            TextView tv_item_scroll = (TextView) view.findViewById(R.id.tv_item_scroll);            view.setId(i);            tv_item_scroll.setText(goodsList.get(i));            ll_test_contain.addView(view);            viewList.add(view);            textViewList.add(tv_item_scroll);        }        changeTextColor(0);    }    private View.OnClickListener textOnClickListener = new View.OnClickListener() {        @Override        public void onClick(View v) {            changeTextColor(v.getId());            changeTextLocation(v.getId());        }    };        //改变点击条目的位置，居中    private void changeTextLocation(int textPosition) {        int x = (viewList.get(textPosition).getTop() - sv_test.getHeight()/2 + (viewList.get(textPosition).getHeight() / 2));        sv_test.smoothScrollTo(0, x);    }    //改变点击条目的颜色    private void changeTextColor(int textPosition) {        for (int i = 0; i <textViewList.size() ; i++) {            textViewList.get(i).setTextColor(0xFF000000);            textViewList.get(i).setBackgroundColor(0x00000000);        }        textViewList.get(textPosition).setTextColor(0xFFFF0000);        textViewList.get(textPosition).setBackgroundColor(0xFFFFFFFF);    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"><com.frame.activity.TestScrollView    android:id="@+id/sv_test"    android:layout_width="80dp"    android:layout_height="wrap_content">    <LinearLayout        android:id="@+id/ll_test_contain"        android:orientation="vertical"        android:layout_width="match_parent"        android:layout_height="wrap_content">    </LinearLayout></com.frame.activity.TestScrollView></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">            <TextView        android:gravity="center"        android:paddingBottom="16dp"        android:paddingTop="16dp"        android:id="@+id/tv_item_scroll"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <ImageView        android:background="#cccccc"        android:layout_width="match_parent"        android:layout_height="1dp" />    </LinearLayout>

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