Android LIstView简单实现

MainActivity

package com.example.listview;import androidx.appcompat.app.AppCompatActivity;import android.content.Context;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.TextView;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    private ListView myListview;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        myListview = (ListView) findViewById(R.id.main_listView);        List<String> names=new ArrayList<>();        for (int i = 0; i < 100; i++) {            names.add("学习天数 "+i);        }        myListview.setAdapter(new MyListView(names));    }    public class MyListView extends BaseAdapter{        private List<String> names;        public MyListView(List<String> names){            this.names=names;        }        @Override        public int getCount() {            return names.size();        }        @Override        public Object getItem(int position) {            return names.get(position);        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            LayoutInflater layoutInflater =(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);            convertView = layoutInflater.inflate(R.layout.activity_text,null);            TextView textView=convertView.findViewById(R.id.text_name);            textView.setText(names.get(position));            return convertView;        }    }}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><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="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">    <ListView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/main_listView"        /></LinearLayout>

activity_text.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textSize="20sp"        android:text="@string/app_name"        android:id="@+id/text_name"        /></LinearLayout>

Android LIstView简单实现_第1张图片

更多相关文章

随机推荐