Android(安卓)控件GridView的使用
16lz
2021-01-26
java测试代码:
package com.example.gridview;import java.util.ArrayList;import java.util.HashMap;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Matrix;import android.os.Bundle;import android.view.Display;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.widget.GridView;import android.widget.ImageView;import android.widget.SimpleAdapter;public class MainActivity extends Activity {private ArrayList<HashMap<String, Object>> data;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" };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);data = new ArrayList<HashMap<String, Object>>();for (int i = 0; i < iconName.length; i++) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("image", R.drawable.ic_launcher);map.put("icon", iconName[i]);data.add(map);}GridView mGridView = (GridView) findViewById(R.id.gridview);String[] from = { "image", "icon" };int[] resource = { R.id.image, R.id.text };mGridView.setAdapter(new SimpleAdapter(this, data, R.layout.item, from, resource));}}
需要的activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.gridview.MainActivity" > <!-- numColumns列数设置为自动 columnWidth每列的宽度,也就是Item的宽度 stretchMode缩放与列宽大小同步 --> <GridView android:id="@+id/gridview" android:layout_width="match_parent" android:layout_height="match_parent" android:columnWidth="80dp" android:numColumns="auto_fit" android:stretchMode="columnWidth" > </GridView></LinearLayout>
需要的item.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="10dp" android:gravity="center" tools:context="com.example.gridview.MainActivity" > <ImageView android:id="@+id/image" android:layout_width="60dp" android:layout_height="60dp" android:src="@drawable/ic_launcher"/> <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="5dp" android:text="文字"/></LinearLayout>
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