Android 自定义适配器ListView 实现打电话

最新推荐文章于 2021-05-27 01:50:15 发布

原创最新推荐文章于 2021-05-27 01:50:15 发布 · 591 阅读

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#android #listview

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本文介绍了一个简单的Android应用，该应用展示了一个联系人列表，并实现了点击拨打电话的功能。通过使用BaseAdapter自定义适配器，文章详细展示了如何加载布局、初始化数据及监听器等关键步骤。

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先布局好，然后在来写MainActivity，然后在一步步实现，

实现适配器的接口 BaseAdapter

建一个person类联系人实体类

import java.util.ArrayList;
import java.util.List;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.telephony.PhoneNumberUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements InitInterface{
private ListView lv_constact;
private List<Person> persons;
private Button bt_call;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

initView();
initData();
initListener();
}
@Override
public void initView() {
lv_constact=(ListView) this.findViewById(R.id.lv_constact);
Button bt_call = (Button)findViewById(R.id.bt_call);
final TextView tv_phone = (TextView) this.findViewById(R.id.tv_phone);

lv_constact.setOnItemClickListener(new OnItemClickListener() {
//. String phoneNumber = tv_phone.getText().toString().trim();
@Override

public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {

// TODO Auto-generated method stub

startActivity(new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+tv_phone)));
}
});

}

@Override
public void initData() {
persons = initPeronData();
MyAdapter myAdapter= new MyAdapter();
lv_constact.setAdapter(myAdapter);
}
/*
* 创建联系人集合
* */
private List<Person> initPeronData() {
List<Person> persons = new ArrayList<Person>();
Person p1= new Person(R.drawable.face1,"大左" ,"15575654432");
persons.add(p1);
Person p2= new Person(R.drawable.face2,"西瓜" ,"15572221142");
persons.add(p2);
Person p3= new Person(R.drawable.face3,"老谭" ,"15576506642");
persons.add(p3);
Person p4= new Person(R.drawable.face4,"丽煌" ,"15578801142");
persons.add(p4);
Person p5= new Person(R.drawable.face5,"老刘" ,"15512341222");
persons.add(p5);
Person p6= new Person(R.drawable.face6,"老刘" ,"15571621823");
persons.add(p6);
Person p7= new Person(R.drawable.face7,"小王" ,"15573401142");
persons.add(p7);
Person p8= new Person(R.drawable.face8,"小左" ,"15571201242");
persons.add(p8);

return persons;
}
@Override
public void initListener() {

}

public class MyAdapter extends BaseAdapter {

/**
* 这个方法是给框架调用
* 必修要重写这个方法
* */
@Override
public int getCount() {
// TODO Auto-generated method stub
return persons.size();
}
/*
* 返回具体条目对象
* position 当前条目下标
* */
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return persons.get(position);
}
/*
* 返回条目的下标
*
* */
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
/*
* getView（）返回具体条目的视图
* 也是框架需要的调用的
* */
@Override
public View getView(int position, View converView, ViewGroup parent) {
//
LayoutInflater layoutInflater= MainActivity.this.getLayoutInflater();
//LayoutInflater layoutInflater= (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v= layoutInflater.inflate(R.layout.list_item, null);
//找控件
ImageView iv_icon= (ImageView) v.findViewById(R.id.iv_icon);
TextView tv_name= (TextView) v.findViewById(R.id.tv_name);
TextView tv_phone= (TextView) v.findViewById(R.id.tv_phone);
Person person= persons.get(position);
//设置数据
iv_icon.setImageResource(person.getIcon());
tv_name.setText(person.getName());
tv_phone.setText(person.getPhone());
return v;
}
}

}