如何使用 Kotlin 在 Android 应用中创建 GridView 布局?
kotlin androidapps/applicationsmobile development更新于 2026/2/15 10:07:17
本示例演示了如何使用 Kotlin 在 Android 应用中创建 GridView 布局。
步骤 1 − 在 Android Studio 中创建一个新项目，前往"文件">"新建项目"，并填写所有必填信息以创建新项目。
步骤 2 − 将以下代码添加到 res/layout/activity_main.xml。
示例
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout 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=".MainActivity"> <GridView android:id="@+id/gridView" android:layout_width="match_parent" android:layout_height="match_parent" android:numColumns="2" /> </RelativeLayout>
步骤 3 − 将以下代码添加到 src/MainActivity.kt
import android.os.Bundle
import android.widget.AdapterView.OnItemClickListener
import android.widget.GridView
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
lateinit var gridView: GridView
private var playerNames = arrayOf("Cristiano Ronaldo", "Joao Felix", "Bernado Silva", "Andre Silve", "Bruno
Fernandez", "William Carvalho", "Nelson Semedo", "Pepe", "Rui Patricio")
private var playerImages = intArrayOf(R.drawable.ronaldo, R.drawable.felix, R.drawable.bernado,
R.drawable.andre,
R.drawable.bruno, R.drawable.carvalho, R.drawable.semedo, R.drawable.pepe, R.drawable.patricio)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
title = "KotlinApp"
gridView = findViewById(R.id.gridView)
val mainAdapter = MainAdapter(this@MainActivity, playerNames, playerImages)
gridView.adapter = mainAdapter
gridView.onItemClickListener = OnItemClickListener { _, _, position, _ ->
Toast.makeText(applicationContext, "You CLicked " + playerNames[+position],
Toast.LENGTH_SHORT).show()
}
}
}
步骤 4 − 创建一个 Kotlin 类 (MyAdapter.kt) 并添加以下代码
import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.BaseAdapter
import android.widget.ImageView
import android.widget.TextView
internal class MainAdapter(
private val context: Context,
private val numbersInWords: Array<String>,
private val numberImage: IntArray
) :
BaseAdapter() {
private var layoutInflater: LayoutInflater? = null
private lateinit var imageView: ImageView
private lateinit var textView: TextView
override fun getCount(): Int {
return numbersInWords.size
}
override fun getItem(position: Int): Any? {
return null
}
override fun getItemId(position: Int): Long {
return 0
}
override fun getView(
position: Int,
convertView: View?,
parent: ViewGroup
): View? {
var convertView = convertView
if (layoutInflater == null) {
layoutInflater =
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
}
if (convertView == null) {
convertView = layoutInflater!!.inflate(R.layout.rowitem, null)
}
imageView = convertView!!.findViewById(R.id.imageView)
textView = convertView.findViewById(R.id.textView)
imageView.setImageResource(numberImage[position])
textView.text = numbersInWords[position]
return convertView
}
}
步骤 5 − 创建布局资源文件 (row_item.xml) 并添加以下代码 −
<?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="8dp"> <ImageView android:id="@+id/imageView" android:layout_width="100dp" android:layout_height="100dp" /> <TextView android:textAlignment="center" android:gravity="center" android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="16dp" android:text="Numbers" android:layout_marginBottom="10dp" android:textColor="@android:color/background_dark" android:textSize="24sp" android:textStyle="bold" /> </LinearLayout>
步骤 6 − 将以下代码添加到 androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.q11"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
让我们尝试运行您的应用程序。假设您已将实际的 Android 移动设备连接到电脑。要从 Android Studio 运行该应用程序，请打开项目的某个活动文件，然后点击工具栏上的"运行"图标
。选择您的移动设备作为选项，然后勾选将显示默认屏幕的移动设备
