您好,登錄后才能下訂單哦!
小編給大家分享一下Android開發如何實現橫向列表GridView橫向滾動,希望大家閱讀完這篇文章之后都有所收獲,下面讓我們一起去探討吧!
具體如下:
Android 橫向列表實現,可左右滑動,如下圖
1. 主界面布局代碼:activity_main.xml
a.包裹HorizontalScrollView控件是GirdView橫向滾動的基本條件
b.GirdView外包裹LinearLayout是java代碼中參數設置的必要條件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <HorizontalScrollView android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="5dp" > <LinearLayout android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_margin="10dp" > <GridView android:id="@+id/grid" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center" android:numColumns="auto_fit" android:stretchMode="spacingWidthUniform" > </GridView> </LinearLayout> </HorizontalScrollView> </LinearLayout>
2.主界面GridView列表子項布局文件:list_item.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/itemlayout" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <ImageView android:id="@+id/ItemImage" android:layout_width="80.0dip" android:layout_height="80.0dip" android:layout_gravity="center_horizontal" android:src="@drawable/china" > </ImageView> <TextView android:id="@+id/tvCity" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:text="Title" android:textColor="#000000" > </TextView> <TextView android:id="@+id/tvCode" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:text="Info" android:textColor="#000000" > </TextView> </LinearLayout>
3.java實現代碼:MainActivity.java
package com.example.horizontallistview; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.util.DisplayMetrics; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; /*** * * @author ymw */ public class MainActivity extends Activity { List<CityItem> cityList; RelativeLayout itmel; GridView gridView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); LayoutInflater layoutInflater = (LayoutInflater) this .getSystemService("layout_inflater"); gridView = (GridView) findViewById(R.id.grid); setData(); setGridView(); } /**設置數據*/ private void setData() { cityList = new ArrayList<CityItem>(); CityItem item = new CityItem(); item.setCityName("深圳"); item.setCityCode("0755"); cityList.add(item); item = new CityItem(); item.setCityName("上海"); item.setCityCode("021"); cityList.add(item); item = new CityItem(); item.setCityName("廣州"); item.setCityCode("020"); cityList.add(item); item = new CityItem(); item.setCityName("北京"); item.setCityCode("010"); cityList.add(item); item = new CityItem(); item.setCityName("武漢"); item.setCityCode("027"); cityList.add(item); item = new CityItem(); item.setCityName("孝感"); item.setCityCode("0712"); cityList.add(item); cityList.addAll(cityList); } /**設置GirdView參數,綁定數據*/ private void setGridView() { int size = cityList.size(); int length = 100; DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); float density = dm.density; int gridviewWidth = (int) (size * (length + 4) * density); int itemWidth = (int) (length * density); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams( gridviewWidth, LinearLayout.LayoutParams.FILL_PARENT); gridView.setLayoutParams(params); // 設置GirdView布局參數,橫向布局的關鍵 gridView.setColumnWidth(itemWidth); // 設置列表項寬 gridView.setHorizontalSpacing(5); // 設置列表項水平間距 gridView.setStretchMode(GridView.NO_STRETCH); gridView.setNumColumns(size); // 設置列數量=列表集合數 GridViewAdapter adapter = new GridViewAdapter(getApplicationContext(), cityList); gridView.setAdapter(adapter); } /**GirdView 數據適配器*/ public class GridViewAdapter extends BaseAdapter { Context context; List<CityItem> list; public GridViewAdapter(Context _context, List<CityItem> _list) { this.list = _list; this.context = _context; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { LayoutInflater layoutInflater = LayoutInflater.from(context); convertView = layoutInflater.inflate(R.layout.list_item, null); TextView tvCity = (TextView) convertView.findViewById(R.id.tvCity); TextView tvCode = (TextView) convertView.findViewById(R.id.tvCode); CityItem city = list.get(position); tvCity.setText(city.getCityName()); tvCode.setText(city.getCityCode()); return convertView; } } public class CityItem { private String cityName; private String cityCode; public String getCityName() { return cityName; } public void setCityName(String cityName) { this.cityName = cityName; } public String getCityCode() { return cityCode; } public void setCityCode(String cityCode) { this.cityCode = cityCode; } } }
看完了這篇文章,相信你對“Android開發如何實現橫向列表GridView橫向滾動”有了一定的了解,如果想了解更多相關知識,歡迎關注億速云行業資訊頻道,感謝各位的閱讀!
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。