ArrayAdapter数组适配器用于绑定格式单一的数据,数据源可以是集合或者数组
列表视图(ListView)以垂直的形式列出需要显示的列表项。
实现过程:新建适配器->添加数据源到适配器->视图加载适配器
第一种:直接用ListView组件创建
列表每一行只有一行文字
效果如图:
activity_list布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/lv_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="@android:color/holo_blue_dark"
android:dividerHeight="1dp"
android:entries="@array/list"></ListView>
<!--
ListView 是列表控件,用于显示一组或许多(成百、上千)相似内容用的
android:divider :表示listview的分割线
android:dividerHeight:表示分割线的高度
android:entries:在res/layout的string.xml中添加数组资源的名称
-->
</LinearLayout>
android:entries="@array/list"></ListView>
<!--
ListView 是列表控件,用于显示一组或许多(成百、上千)相似内容用的
android:divider :表示listview的分割线
android:dividerHeight:表示分割线的高度
android:entries:在res/layout的string.xml中添加数组资源的名称
-->
</LinearLayout>
在res/layout的string.xml中添加数组资源的名称
<resources>
<string name="app_name">ArrayAdapter数组适配器</string>
<string-array name = "list"> <!--数组资源名称为list 与layout中对应-->
<item>第一行</item>
<item>第二行</item>
<item>第三行</item>
<item>第四行</item>
<item>第五行</item>
<item>第六行</item>
<item>第七行</item>
<item>第八行</item>
<item>第九行</item>
<item>第十行</item>
<item>第十一行</item>
<item>第十二行</item>
<item>第十三行</item>
</string-array>
</resources>
<string-array name = "list"> <!--数组资源名称为list 与layout中对应-->
<item>第一行</item>
<item>第二行</item>
<item>第三行</item>
<item>第四行</item>
<item>第五行</item>
<item>第六行</item>
<item>第七行</item>
<item>第八行</item>
<item>第九行</item>
<item>第十行</item>
<item>第十一行</item>
<item>第十二行</item>
<item>第十三行</item>
</string-array>
</resources>
MainActivity.java:
package com.ied.arrayadapter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
listView = (ListView) findViewById(R.id.lv_list);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String result = parent.getItemAtPosition(position).toString();//获取选择项的值
Toast.makeText(MainActivity.this,"您点击了"+result,Toast.LENGTH_SHORT).show();
}
});
}
}
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
listView = (ListView) findViewById(R.id.lv_list);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String result = parent.getItemAtPosition(position).toString();//获取选择项的值
Toast.makeText(MainActivity.this,"您点击了"+result,Toast.LENGTH_SHORT).show();
}
});
}
}
第二种:
三个参数 (使用android自带的 android.R.layout.simple_list_item_1)
activity_list布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/lv_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="@android:color/holo_blue_dark"
android:dividerHeight="1dp"></ListView>
</LinearLayout>
MainActivity.java:
package com.ied.arrayadapter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private ListView listView;
private ArrayAdapter<String> arrayAdapter;
private SimpleAdapter simpleAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
listView = (ListView) findViewById(R.id.lv_list);
String data[] = {"1","2","3","4","5","6","7","8","9","10","11","12","13"};
//创建数组适配器,作为数据源和列表控件联系的桥梁
//第一个参数:上下文环境
//第二个参数:当前列表项加载的布局文件
//第三个参数:数据源
arrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data);
//listview视图加载适配器
listView.setAdapter(arrayAdapter);
//为列表视图中选中的项添加响应事件
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String result = parent.getItemAtPosition(position).toString();//获取选择项的值
Toast.makeText(MainActivity.this,"您点击了"+result,Toast.LENGTH_SHORT).show();
}
});
}
}
arrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data);
//listview视图加载适配器
listView.setAdapter(arrayAdapter);
//为列表视图中选中的项添加响应事件
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String result = parent.getItemAtPosition(position).toString();//获取选择项的值
Toast.makeText(MainActivity.this,"您点击了"+result,Toast.LENGTH_SHORT).show();
}
});
}
}
四个参数:自定义了TextView
activity_info布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tv_info"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TextView" />
</LinearLayout>
activity_list布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/lv_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="@android:color/holo_blue_dark"
android:dividerHeight="1dp"></ListView>
</LinearLayout>
MainActivity.java:
package com.ied.arrayadapter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private ListView listView;
private ArrayAdapter<String> arrayAdapter;
private ArrayList<String> data;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_info);
listView = (ListView) findViewById(R.id.lv_list);
initData();//数据源
// String data[] = {"1","2","3","4","5","6","7","8","9","10","11","12","13"};
//创建数组适配器,作为数据源和列表控件联系的桥梁
arrayAdapter = new ArrayAdapter<String>(this,R.layout.activity_list,R.id.tv_info,data);
//listview视图加载适配器
listView.setAdapter(arrayAdapter);
//为列表视图中选中的项添加响应事件
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String result = parent.getItemAtPosition(position).toString();//获取选择项的值
Toast.makeText(MainActivity.this,"您点击了"+result,Toast.LENGTH_SHORT).show();
}
});
}
private void initData(){
data = new ArrayList<String>();
for (int i=0;i<13;i++){
data.add("第"+(i+1)+"行");
}
}
}
第三种:自定义ArrayAdapter数组适配器
密码:d4qm
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原文链接:Android(14) ArrayAdapter(数组适配器)的三种方法,转载请注明来源!