Android作业——简单的联系人

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">这学期android讲了一大半了，说期末要交作业，一个简单的联系人。</span>

基本要求（很简单）。

1、可以跳转界面

2、长按出现上下文菜单

<1>获取当前联系人电话号码，实现打电话功能。

<2>获取当前联系人电话号码，实现发短息功能。

跳转界面代码

import java.util.Timer;
import java.util.TimerTask;import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);final Intent it = new Intent(this,lian.class);Timer timer = new Timer();TimerTask task = new TimerTask(){public void run(){startActivity(it);}};timer.schedule(task,1000*3);}}

联系人界面布局

<?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="horizontal" ><ImageView android:id="@+id/img"android:layout_width="50dp"android:layout_height="50dp"/><LinearLayout android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="50dp"><TextViewandroid:id="@+id/name"android:layout_width="fill_parent"android:layout_height="30dp"android:gravity="center_vertical"/><TextViewandroid:text="telnum"android:id="@+id/telnum"android:layout_width="fill_parent"android:layout_height="20dp"android:gravity="center_vertical"/></LinearLayout></LinearLayout>

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

联系人界面代码

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;public class lian extends Activity {private ListView lv;String phonenum;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.listview);lv = (ListView) findViewById(R.id.lv);int[] img = new int[]{R.drawable.img_01,R.drawable.img_02,R.drawable.img_03,R.drawable.img_04,R.drawable.img_05,R.drawable.img_06,R.drawable.img_07,R.drawable.img_08,R.drawable.img_09,R.drawable.img_10,R.drawable.img_11,R.drawable.img_12,R.drawable.img_13,R.drawable.img_14,R.drawable.img_15,R.drawable.img_16,R.drawable.img_17,R.drawable.img_18,R.drawable.img_19,R.drawable.img_20};String[] name = new String[] {"张一","张二","张三","张四","张五","李一","李二","李三","李四","李五","王一","王二","王三","王四","王五","刘一","刘二","刘三","刘四","刘五"};String[] telnum = new String[]{"1008611","1008612","1008613","1008614","1008615","1001011","1001012","1001013","1001014","1001015","1000011","1000012","1000013","1000014","1000015","9558811","9558812","9558813","9558814","9558815"};List<Map<String,Object>> StringItems = new ArrayList<Map<String,Object>>();for(int i = 0 ; i < img.length ; i++){Map<String,Object> map = new HashMap<String,Object>();map.put("img", img[i]);map.put("name", name[i]);map.put("telnum", telnum[i]);StringItems.add(map);}SimpleAdapter adapter = new SimpleAdapter(this,StringItems,R.layout.items,new String[]{"img","name","telnum"},new int[]{R.id.img,R.id.name,R.id.telnum});lv.setAdapter(adapter);registerForContextMenu(lv);
//       lv.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
//      public void onCreateContextMenu(ContextMenu arg0, View arg1,
//              ContextMenuInfo arg2) {
//          MenuInflater inflator = new MenuInflater(lian.this);
//          inflator.inflate(R.menu.main,arg0);
//          arg0.setHeaderTitle("请选择");
//      }
//  });     lv.setOnItemClickListener(new OnItemClickListener() {public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {Adapter adapter=arg0.getAdapter();Map<String,String> map=(Map<String, String>) adapter.getItem(arg2);phonenum = map.get("telnum");//Toast.makeText(lian.this, phonenum, Toast.LENGTH_LONG).show();lv.showContextMenu();}});lv.setOnItemLongClickListener(new OnItemLongClickListener() {public boolean onItemLongClick(AdapterView<?> arg0, View arg1,int arg2, long arg3) {Adapter adapter=arg0.getAdapter();Map<String,String> map=(Map<String, String>) adapter.getItem(arg2);phonenum = map.get("telnum");//Toast.makeText(lian.this, phonenum, Toast.LENGTH_LONG).show();lv.showContextMenu();return true;}});}@Overridepublic void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {super.onCreateContextMenu(menu, v, menuInfo);MenuInflater inflator = new MenuInflater(lian.this);inflator.inflate(R.menu.main,menu);menu.setHeaderTitle("请选择");}public boolean onContextItemSelected(MenuItem item){switch(item.getItemId()){case R.id.tel:Uri ui1 = Uri.parse("tel:" + phonenum);Intent it1 = new Intent();it1.setAction(Intent.ACTION_CALL);it1.setData(ui1);startActivity(it1);break;case R.id.mms:Uri ui2 = Uri.parse("smsto:" + phonenum);Intent it2 = new Intent();it2.setAction(Intent.ACTION_SENDTO);it2.setData(ui2);it2.putExtra("sms_body", "你好");startActivity(it2);break;}return true;}
}

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