GridView:网格列表

重要属性：

numColumns="3"//列数
verticalSpacing="5dp"//item之间在垂直方向的间距

1.操作步骤：

a.创建一个GridView的Activity

b.创建一个Item的样式布局

c.创建一个MainAdapter类继承BaseAdapter，重点是重写getview()方法

d.MainActivity中定义视图包含数据

别忘了把需要的图片导入drawable目录下

2.核心代码

activity_main.xml

<GridView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/gv_main"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"android:numColumns="3"android:verticalSpacing="5dp"android:layout_marginTop="10dp"></GridView>

item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="100dp"android:layout_height="100dp"android:orientation="vertical"android:gravity="center"><ImageViewandroid:id="@+id/iv_item_icon"android:layout_width="80dp"android:layout_height="80dp"android:src="@drawable/ic_food1"/><TextViewandroid:id="@+id/tv_item_name"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="牛排"android:textSize="20sp"android:textStyle="bold" />
</LinearLayout>

Adapter

private String[] names;private int[] icons;private Context context;public MainAdapter(Context context,String[] names, int[] icons) {super();this.context = context;this.names = names;this.icons = icons;}@Overridepublic int getCount() {return names.length;}@Overridepublic Object getItem(int i) {return names[i];}@Overridepublic long getItemId(int i) {return 0;}@Overridepublic View getView(int i, View view, ViewGroup viewGroup) {if (view == null) {view = View.inflate(context,R.layout.item_app,null);}ImageView imageView = view.findViewById(R.id.iv_item_icon);TextView textView = view.findViewById(R.id.tv_item_name);imageView.setImageResource(icons[i]);textView.setText(names[i]);return view;}

MainActivity

private GridView gv_main;private MainAdapter adapter;String[] names = new String[]{"牛排","大鱼","鸡排饭","烤鸭","猪蹄","烤鸡","披萨","肉串","炸串","大虾"};int[] icons = new int[] {R.drawable.ic_food1,R.drawable.ic_food2,R.drawable.ic_food3, R.drawable.ic_food4,R.drawable.ic_food5,R.drawable.ic_food6,R.drawable.ic_food7, R.drawable.ic_food8,R.drawable.ic_food9,R.drawable.ic_food10};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);gv_main = findViewById(R.id.gv_main);adapter = new MainAdapter(this,names,icons);gv_main.setAdapter(adapter);gv_main.setOnItemClickListener(new AdapterView.OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {//得到当前点击item的名称String name = names[i];//提示Toast.makeText(MainActivity.this, name, Toast.LENGTH_SHORT).show();}});}

3.效果图