16读取通话记录

• 所需权限

  <!-- 获取拨打电话的记录权限 -->    <uses-permission android:name="android.permission.READ_CALL_LOG"/>

• layout 布局文件
  mainActivity

  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <ListView        android:id="@+id/lv"        android:layout_width="match_parent"        android:layout_height="match_parent"      />    <TextView         android:id="@+id/tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="暂无数据"        android:layout_centerInParent="true"        android:textColor="#f00"        android:textSize="30sp"        /></RelativeLayout>

list填充文件

<?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:id="@+id/tv_number"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        />    <TextView         android:id="@+id/tv_date"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        /></LinearLayout>

• 逻辑代码 mainActivity.java

  package com.qf.day16_contentresolver_call_demo2;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.logging.SimpleFormatter;import android.net.Uri;import android.os.Bundle;import android.provider.CallLog;import android.app.Activity;import android.content.ContentResolver;import android.database.Cursor;import android.view.Menu;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.TextView;/** *  * 通话记录的数据 *  * 1,获取ContentResolver对象 2,ContentResolver对象 通过Uri地址 获取数据 3,展示数据 *  */public class MainActivity extends Activity {    private ListView lv;    private TextView tv;    private ContentResolver contentResolver;    //content://call_log/calls    private Uri callUri = CallLog.Calls.CONTENT_URI;    private String [] coumns = new String[]{CallLog.Calls._ID,CallLog.Calls.NUMBER,CallLog.Calls.DATE};    //存数据源的集合    private List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv = (ListView) findViewById(R.id.lv);        tv = (TextView) findViewById(R.id.tv);        contentResolver = getContentResolver();        //解析器 通过Uri地址获取指定的字段项        Cursor cursor = contentResolver.query(callUri,                 coumns,                 null,                 null,                null);        while(cursor.moveToNext()){            Map<String, Object> map = new HashMap<String, Object>();            long id = cursor.getLong(cursor.getColumnIndex(CallLog.Calls._ID));            String number = cursor.getString(cursor.getColumnIndex(CallLog.Calls.NUMBER));            long date = cursor.getLong(cursor.getColumnIndex(CallLog.Calls.DATE));            map.put("id", id);            map.put("number", number);            map.put("date", format.format(date));            list.add(map);        }        SimpleAdapter adapter = new SimpleAdapter(MainActivity.this,                list, R.layout.item, new String[]{"number","date"}, new int[]{R.id.tv_number,R.id.tv_date});        lv.setAdapter(adapter);        //如果没有数据  展示VIew        lv.setEmptyView(tv);    }}