UI_條目滑動監聽
阿新 • • 發佈:2018-11-17
package com.example.d_12; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.widget.AbsListView; import android.widget.AbsListView.OnScrollListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.ProgressBar; import android.widget.Toast; public class MainActivity extends Activity { private ListView listView; private Mydapater mydapater; int index = 0 ; int num = 20 ; private List<Student> list = new ArrayList<Student>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 初始化 initView(); // 測試資料 //進度條 View view = View.inflate(this, R.layout.jin, null); listView.addFooterView(view); add(); listView.setOnScrollListener(new OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { if (scrollState==OnScrollListener.SCROLL_STATE_IDLE) { //顯示的最後一條條目 if (listView.getLastVisiblePosition()==list.size()) { index= index+num; add(); } } } @Override //0 public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } }); } private void add() { for (int i = index; i < index+num; i++) { list.add(new Student(i+"中國"+i)); } if (mydapater==null) { mydapater = new Mydapater(list, this); listView.setAdapter(mydapater); } else { mydapater.notifyDataSetChanged(); } } private void initView() { listView = (ListView) findViewById(R.id.listv); } }