Android:控件GridView的使用
如果是列表(单列多行形式)的使用ListView,如果是多行多列网状形式的优先使用GridView。
<?xml version="1.0" encoding="utf-8"?> <GridView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > </GridView>
GirdView的一些属性:
android:numColumns="auto_fit" --------列数设置为自动
android:columnWidth="90dp",----------每列的宽度,也就是Item的宽度
android:stretchMode="columnWidth"------缩放与列宽大小同步
android:verticalSpacing="10dp"----------垂直边距
android:horizontalSpacing="10dp"-------水平边距
1、准备数据源
2、新建适配器
3、加载适配器
GridView(网格视图)是按照行列的方式来显示内容的,一般用于显示图片,图片等内容,比如实现九宫格图,用GridView是首选,也是最简单的,下面来个实例,
效果图:
MainActivity.java
package com.example.testgridview; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.Activity; import android.os.Bundle; import android.widget.GridView; import android.widget.SimpleAdapter; public class MainActivity extends Activity { private GridView gview; private List<Map<String, Object>> data_list; private SimpleAdapter sim_adapter; // 图片封装为一个数组 private int[] icon = { R.drawable.address_book, R.drawable.calendar, R.drawable.camera, R.drawable.clock, R.drawable.games_control, R.drawable.messenger, R.drawable.ringtone, R.drawable.settings, R.drawable.speech_balloon, R.drawable.weather, R.drawable.world, R.drawable.youtube }; private String[] iconName = { "通讯录", "日历", "照相机", "时钟", "游戏", "短信", "铃声", "设置", "语音", "天气", "浏览器", "视频" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.test); gview = (GridView) findViewById(R.id.gview); //新建List data_list = new ArrayList<Map<String, Object>>(); //获取数据 getData(); //新建适配器 String [] from ={"image","text"}; int [] to = {R.id.image,R.id.text}; sim_adapter = new SimpleAdapter(this, data_list, R.layout.item, from, to); //配置适配器 gview.setAdapter(sim_adapter); } public List<Map<String, Object>> getData(){ //cion和iconName的长度是相同的,这里任选其一都可以 for(int i=0;i<icon.length;i++){ Map<String, Object> map = new HashMap<String, Object>(); map.put("image", icon[i]); map.put("text", iconName[i]); data_list.add(map); } return data_list; } }
test.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="#000" > <GridView android:id="@+id/gview" android:layout_width="match_parent" android:layout_height="wrap_content" android:numColumns="auto_fit" android:columnWidth="80dp" android:stretchMode="columnWidth" ></GridView> </LinearLayout>
item.xml
<?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:orientation="vertical" android:gravity="center" android:padding="10dp" > <ImageView android:src="@drawable/ic_launcher" android:id="@+id/image" android:layout_width="60dp" android:layout_height="60dp" /> <TextView android:id="@+id/text" android:layout_marginTop="5dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#ffffff" android:text="文字" /> </LinearLayout>
监听接口: onItemClickListener
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