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android适配器持有者模式

發布時間：2023/12/20 编程问答 27 豆豆

生活随笔收集整理的這篇文章主要介紹了 android适配器持有者模式小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

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fragment：

<?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"?
??? android:background="#00FF00">

??? <TextView
??????? android:id="@+id/textView1"
??????? android:layout_width="match_parent"
??????? android:layout_height="match_parent"
??????? android:text="聊天"
??????? android:textAppearance="?android:attr/textAppearanceLarge" />

??? <ListView
??????? android:id="@+id/listView1"
??????? android:layout_width="match_parent"
??????? android:layout_height="wrap_content" >
??? </ListView>

</LinearLayout>

items：

<?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="wrap_content"
??? android:gravity="center_vertical"
??? android:orientation="horizontal" >

??? <ImageView
??????? android:id="@+id/imageView1"
??????? android:layout_width="wrap_content"
??????? android:layout_height="wrap_content"
??????? android:src="@drawable/ic_launcher" />

??? <LinearLayout
??????? android:layout_width="match_parent"
??????? android:layout_height="match_parent"
??????? android:orientation="vertical" >

??????? <TextView
??????????? android:id="@+id/textView2"
??????????? android:layout_width="wrap_content"
??????????? android:layout_height="wrap_content"
??????????? android:text="sss"
??????????? android:textAppearance="?android:attr/textAppearanceSmall" />

??????? <TextView
??????????? android:id="@+id/textView1"
??????????? android:layout_width="wrap_content"
??????????? android:layout_height="wrap_content"
??????????? android:text="jjj"
??????????? android:textAppearance="?android:attr/textAppearanceLarge" />
??? </LinearLayout>

</LinearLayout>

package com.jxc.fragment;

import com.jxc.homeandschool.R;

import android.os.Bundle;
import android.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class Fragment2 extends Fragment {
?
?private View view;
?int x=0;
?int max=50;
?ListView list;

//?String[] str1 = { "第一個", "第二個", "第三個", "第四個", "第五個" };
//?String[] str2 = { "第一個", "第二個", "第三個", "第四個", "第五個" };
?String[] str1=new String[max];
?String[] str2=new String[max];
?
?int[] i = { R.drawable.ic_launcher, R.drawable.ic_launcher,
???R.drawable.ic_launcher, R.drawable.ic_launcher,
???R.drawable.ic_launcher, };

?@Override
?public View onCreateView(LayoutInflater inflater, ViewGroup container,
???Bundle savedInstanceState) {
??view = inflater.inflate(R.layout.fragment2, null);
??init();

??
??
??list.setAdapter(new MyAdapter());
??return view;
?}

?private void init() {
??
??list = (ListView) view.findViewById(R.id.listView1);
??

??for(x=0;x<max;x++){
???
???System.out.println("x----"+x);
???str1[x]="聊天"+x;
???System.out.println("str1[x]----"+x);
???
???str2[x]="聊天"+x;
???System.out.println("hai----hai");
??}
?}

?
?
?public class MyAdapter extends BaseAdapter {

??@Override
??public int getCount() {
???// TODO 自動生成的方法存根
???return str1.length;
??}

??@Override
??public Object getItem(int arg0) {
???// TODO 自動生成的方法存根
???return arg0;
??}

??@Override
??public long getItemId(int arg0) {
???// TODO 自動生成的方法存根
???return arg0;
??}

??@Override
??public View getView(int arg0, View convertView , ViewGroup arg2) {
???ViewHolder holder=null;
???if(convertView ==null){
????convertView =getActivity().getLayoutInflater().inflate(R.layout.items, null);
????holder=new ViewHolder(convertView);
//????holder.im = (ImageView) convertView.findViewById(R.id.imageView1);
//????holder.tv = (TextView) convertView.findViewById(R.id.textView1);
????
????convertView.setTag(holder);
???}else{
????holder=(ViewHolder) convertView.getTag();
???}
???
??
????holder.tv1.setText(str1[arg0]);
????holder.tv2.setText(str2[arg0]);
???
???
???
???return convertView ;
??}
?}
?class ViewHolder{
??ImageView im;
??TextView tv1,tv2;
??
??ViewHolder(View v){
???im = (ImageView) v.findViewById(R.id.imageView1);
???tv1 = (TextView) v.findViewById(R.id.textView1);
???tv2 = (TextView) v.findViewById(R.id.textView2);
??}
?}
}

package com.jxc.fragment;

import com.jxc.fragment.Fragment2.MyAdapter;
import com.jxc.fragment.Fragment2.ViewHolder;
import com.jxc.homeandschool.R;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class Fragment3 extends Fragment {
?private View view;
?int x=0;
?int max=100;
?ListView list;

?String[] str1=new String[max];
?String[] str2=new String[max];
?
?@Override
?public View onCreateView(LayoutInflater inflater, ViewGroup container,
???Bundle savedInstanceState) {
??view = inflater.inflate(R.layout.fragment3, null);
??init();

??
??
??list.setAdapter(new MyAdapter());
??return view;
?}
private void init() {
??
??list = (ListView) view.findViewById(R.id.listView1);
??

??for(x=0;x<max;x++){
???
???System.out.println("x----"+x);
???str1[x]="設置"+x;
???System.out.println("str1[x]----"+x);
???
???str2[x]="設置"+x;
???System.out.println("hai----hai");
??}
?}

?
?
?public class MyAdapter extends BaseAdapter {

??@Override
??public int getCount() {
???// TODO 自動生成的方法存根
???return str1.length;
??}

??@Override
??public Object getItem(int arg0) {
???// TODO 自動生成的方法存根
???return arg0;
??}

??@Override
??public long getItemId(int arg0) {
???// TODO 自動生成的方法存根
???return arg0;
??}

轉載于:https://my.oschina.net/u/1994482/blog/411852

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