Android動態建立ListView檢視,動態增加和刪除Item.
阿新 • • 發佈:2019-02-15
package com.example.mycustomview;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List; import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast; public class MainActivity extends Activity {
ListView listView;
ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//新建陣列
String[] mylistdata={"Chinese","Japanese","American","Austrilian","Britisher","India","French","Chinese","Japanese","American","Austrilian","Britisher","India","French"};
//注意:一定要將String[]轉成List,否則不能動態增加和刪除
List list=new ArrayList<>(Arrays.asList(mylistdata)); //新增加adapter介面卡
adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,list); //建立ListView
listView=new ListView(this); //將adapter介面卡置入ListView
listView.setAdapter(adapter); //設定預設佈局為ListView
setContentView(listView);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
String item = adapter.getItem(position);
adapter.remove(item);
adapter.add(item+" city");
Toast.makeText(MainActivity.this, item.toString(), Toast.LENGTH_SHORT).show();
}
}); }
}
import java.util.Arrays;
import java.util.List; import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast; public class MainActivity extends Activity {
ListView listView;
ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//新建陣列
String[] mylistdata={"Chinese","Japanese","American","Austrilian","Britisher","India","French","Chinese","Japanese","American","Austrilian","Britisher","India","French"};
//注意:一定要將String[]轉成List,否則不能動態增加和刪除
List list=new ArrayList<>(Arrays.asList(mylistdata)); //新增加adapter介面卡
adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,list); //建立ListView
listView=new ListView(this); //將adapter介面卡置入ListView
listView.setAdapter(adapter); //設定預設佈局為ListView
setContentView(listView);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
String item = adapter.getItem(position);
adapter.remove(item);
adapter.add(item+" city");
Toast.makeText(MainActivity.this, item.toString(), Toast.LENGTH_SHORT).show();
}
}); }
}