自定义Adapter实现-优快云博客

本文介绍了一个自定义的Android Adapter——MyAdapter，该Adapter用于显示考试信息，并通过CheckBox控制项选中状态。文章详细展示了如何继承BaseAdapter并实现其关键方法，包括getView方法中的布局填充、TextView设置文本以及CheckBox状态同步。

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package com.x.d924_monthexam.adapter;

import java.util.ArrayList;

import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.TextView;

import com.example.d924_monthexam.MainActivity;
import com.example.d924_monthexam.R;
import com.x.d924_monthexam.bean.Exam;

public class MyAdapter extends BaseAdapter {

private MainActivity mainActivity;
private ArrayList<Exam> al;

public MyAdapter(MainActivity mainActivity, ArrayList<Exam> al) {
// TODO Auto-generated constructor stub
this.mainActivity=mainActivity;
this.al=al;
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return al.size();
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = View.inflate(mainActivity, R.layout.show, null);
TextView tv = (TextView) view.findViewById(R.id.show_tv);
final CheckBox cb = (CheckBox) view.findViewById(R.id.show_cb);

tv.setText(al.get(position).getName());

cb.setChecked(al.get(position).isChecked());

cb.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
if (cb.isChecked()==true) {
al.get(position).setChecked(true);
}else{
al.get(position).setChecked(false);
}
}
});

return view;
}

}