Android项目实战--手机卫士08--获取手机联系人

 

首先,我把把昨天忘记了的两张设置向导的图片放出来先

Android项目实战--手机卫士08--获取手机联系人_第1张图片  Android项目实战--手机卫士08--获取手机联系人_第2张图片

 

我们从上面的第一张图片可以看到,我们有一个选择联系人这一操作,那么怎样才能获取到手机里面的联系人呢,其实方法有很多的,现在我们来讲一下我们这个项目里面用到的方法

其实要想知道怎样获取手机里面的联系人,去看一下Android自己的源码就知道的了

我们只要把platform/packages/providers/ContactsProvider这一部分的内容下载下来看看就可以的啦

下面是我下载之后,打开里面的AndroidManifest的内容

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.android.providers.contacts"
        android:sharedUserId="android.uid.shared"
        android:sharedUserLabel="@string/sharedUserLabel">

    <permission
            android:name="com.android.voicemail.permission.READ_WRITE_ALL_VOICEMAIL"
            android:label="@string/read_write_all_voicemail_label"
            android:description="@string/read_write_all_voicemail_description"
            android:permissionGroup="android.permission-group.PERSONAL_INFO"
            android:protectionLevel="signature"
            />

    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_CONTACTS" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.BIND_DIRECTORY_SEARCH" />
    <uses-permission android:name="android.permission.UPDATE_APP_OPS_STATS" />
    <uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
    <uses-permission android:name="com.android.voicemail.permission.ADD_VOICEMAIL" />
    <uses-permission android:name="com.android.voicemail.permission.READ_WRITE_ALL_VOICEMAIL" />

    <application android:process="android.process.acore"
        android:label="@string/app_label"
        android:icon="@drawable/app_icon"
        android:allowBackup="false">

        <provider android:name="ContactsProvider2"
            android:authorities="contacts;com.android.contacts"
            android:label="@string/provider_label"
            android:multiprocess="false"
            android:exported="true"
            android:readPermission="android.permission.READ_CONTACTS"
            android:writePermission="android.permission.WRITE_CONTACTS">
            <path-permission
                    android:pathPrefix="/search_suggest_query"
                    android:readPermission="android.permission.GLOBAL_SEARCH" />
            <path-permission
                    android:pathPrefix="/search_suggest_shortcut"
                    android:readPermission="android.permission.GLOBAL_SEARCH" />
            <path-permission
                    android:pathPattern="/contacts/.*/photo"
                    android:readPermission="android.permission.GLOBAL_SEARCH" />
            <grant-uri-permission android:pathPattern=".*" />
        </provider>

        <provider android:name="CallLogProvider"
            android:authorities="call_log"
            android:syncable="false" android:multiprocess="false"
            android:exported="true"
            android:readPermission="android.permission.READ_CALL_LOG"
            android:writePermission="android.permission.WRITE_CALL_LOG">
        </provider>

        <provider android:name="VoicemailContentProvider"
            android:authorities="com.android.voicemail"
            android:syncable="false" android:multiprocess="false"
            android:exported="true"
            android:permission="com.android.voicemail.permission.ADD_VOICEMAIL">
        </provider>

        <!-- Handles database upgrades after OTAs, then disables itself -->
        <receiver android:name="ContactsUpgradeReceiver">
            <!-- This broadcast is sent after the core system has finished
                 booting, before the home app is launched or BOOT_COMPLETED
                 is sent. -->
            <intent-filter>
                <action android:name="android.intent.action.PRE_BOOT_COMPLETED"/>
            </intent-filter>
        </receiver>

        <receiver android:name="PackageIntentReceiver">
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_ADDED" />
                <data android:scheme="package" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_REPLACED" />
                <data android:scheme="package" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_REMOVED" />
                <data android:scheme="package" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_CHANGED" />
                <data android:scheme="package" />
            </intent-filter>
        </receiver>

        <receiver android:name="LocaleChangeReceiver">
            <intent-filter>
                <action android:name="android.intent.action.LOCALE_CHANGED"/>
            </intent-filter>
        </receiver>

        <service android:name="VoicemailCleanupService"/>

        <activity android:name=".debug.ContactsDumpActivity"
                android:label="@string/debug_dump_title"
                android:theme="@android:style/Theme.Holo.Dialog"
                >
            <intent-filter>
                <action android:name="com.android.providers.contacts.DUMP_DATABASE"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
        </activity>

        <provider android:name=".debug.DumpFileProvider"
            android:authorities="com.android.contacts.dumpfile"
            android:exported="true">
        </provider>

    </application>
</manifest>


 

我们可以看一下第一个provider,里面就有我们想要的uri还有它已经写好了的类了,各位有兴趣的可以去看一下是如何实现的,

 

其实我们要获取的东西,都是存放在一个数据库里面的,我们不妨把那个数据库拿出来看一下,拿到那个数据库也很简单,只要在Eclipse里面的ddms界面里面,在右上边

Android项目实战--手机卫士08--获取手机联系人_第3张图片Android项目实战--手机卫士08--获取手机联系人_第4张图片

 

那个contacts2.db就是我们想要的东西啦

我们可以把它导出来,然后用SQLite Database browser来打开它

Android项目实战--手机卫士08--获取手机联系人_第5张图片

获取手机里面的联系人,我们只要关注三个表就可以啦,一个是raw_contacts   data还有一个mime_type这三个表就行啦

mime_type存放的就是一些类型,是电话,还是短信,还是E-mail这些

data就是存放一些数据的东西

raw_contacts就是存放一些命名什么的

这三个表的关系就是下面一样的啦

Android项目实战--手机卫士08--获取手机联系人_第6张图片

 

从上面的可以看到,我们可以通过raw_contacts拿到那个id还有display_name然后就去data那里找到对应的raw_contact_id,这样就可以获得对应的数据啦,然后还可以通过mimetype_id在mime_type表里面找出想要的类型

好啦,原理就是这样啦,下面我们来看一下代码怎么写

我们先要用一个model类来存放我们的数据

com.xiaobin.security.domain.ContactInfo

package com.xiaobin.security.domain;

public class ContactInfo
{
	private String name;
	private String phone;
	
	public String getName()
	{
		return name;
	}
	public void setName(String name)
	{
		this.name = name;
	}
	public String getPhone()
	{
		return phone;
	}
	public void setPhone(String phone)
	{
		this.phone = phone;
	}
	
}


 

然后呢,我们就可以写我们获得手机联系人的代码啦

新建一个类com.xiaobin.security.engine.ContactInfoService

package com.xiaobin.security.engine;

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

import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;

import com.xiaobin.security.domain.ContactInfo;

public class ContactInfoService
{
	private Context context;
	
	public ContactInfoService(Context context)
	{
		this.context = context;
	}
	
	public List<ContactInfo> getContactInfos()
	{
		List<ContactInfo> infos = new ArrayList<ContactInfo>();
		ContactInfo info;
		
		ContentResolver contentResolver = context.getContentResolver();
		//在源码的AndroidManifest里面可以看到这些uri
		Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");
		Uri dataUri = Uri.parse("content://com.android.contacts/data");
		Cursor cursor = contentResolver.query(uri, null, null, null, null);
		while(cursor.moveToNext())
		{
			info = new ContactInfo();
			String id = cursor.getString(cursor.getColumnIndex("_id"));
			String name = cursor.getString(cursor.getColumnIndex("display_name"));
			info.setName(name);
			//通过raw_contacts里面的id拿到data里面对应的数据
			Cursor dataCursor = contentResolver.query(dataUri, null, "raw_contact_id = ? ", new String[] {id}, null);
			while(dataCursor.moveToNext())
			{
				String type = dataCursor.getString(dataCursor.getColumnIndex("mimetype"));
				//根据类型,只要电话这种类型的数据
				if(type.equals("vnd.android.cursor.item/phone_v2"))
				{
					String number = dataCursor.getString(dataCursor.getColumnIndex("data1"));//拿到数据
					info.setPhone(number);
				}
			}
			dataCursor.close();
			infos.add(info);
			info = null;
		}
		cursor.close();
		return infos;
	}

}


 

因为我们是点击按钮,然后打开一个activity,然后选择好了之后,再把值返回到原来的activity那里的,所以我们就要用到startActivityForResult这个方法啦

好,我们来看一下setup_guide3这个向导页面的逻辑是怎样写的

com.xiaobin.security.ui.SetupGuide3Activity

package com.xiaobin.security.ui;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.xiaobin.security.R;

public class SetupGuide3Activity extends Activity implements OnClickListener
{
	private Button bt_next;
	private Button bt_pervious;
	private Button bt_select;
	private EditText et_phoneNumber;
	private SharedPreferences sp;
	
	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.setup_guide3);
		
		sp = getSharedPreferences("config", Context.MODE_PRIVATE);
		
		bt_next = (Button) findViewById(R.id.bt_guide_next);
		bt_pervious = (Button) findViewById(R.id.bt_guide_pervious);
		bt_select = (Button) findViewById(R.id.bt_guide_select);
		bt_next.setOnClickListener(this);
		bt_pervious.setOnClickListener(this);
		bt_select.setOnClickListener(this);
		
		et_phoneNumber = (EditText) findViewById(R.id.et_guide_phoneNumber);
	}
	
	//重写这个方法,从acitivty里面拿到数据
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data)
	{
		super.onActivityResult(requestCode, resultCode, data);
		//resultCode是乃至区分拿到的activity是从那一个activity里面拿到的
		
		if(data != null)
		{
			String number = data.getStringExtra("number");
			et_phoneNumber.setText(number);
		}
	}

	@Override
	public void onClick(View v)
	{
		switch(v.getId())
		{
			case R.id.bt_guide_select : 
				Intent selectIntent = new Intent(this, SelectContactActivity.class);
				//启动一个activity来获取数据,获取到的数据是在重写的onActivityResult这个方法里面拿到的
				startActivityForResult(selectIntent, 1);
				break;
				
			case R.id.bt_guide_next : 
				String number = et_phoneNumber.getText().toString().trim();
				if(number.equals(""))
				{
					Toast.makeText(this, "安全号码不能为空", Toast.LENGTH_SHORT).show();
				}
				else
				{
					Editor editor = sp.edit();
					editor.putString("number", number);
					editor.commit();
					
					Intent intent = new Intent(this, SetupGuide4Activity.class);
					finish();
					startActivity(intent);
					//这个是定义activity切换时的动画效果的
					overridePendingTransition(R.anim.translate_in, R.anim.translate_out);
				}
				break;
			case R.id.bt_guide_pervious : 
				
				Intent i = new Intent(this, SetupGuide2Activity.class);
				finish();
				startActivity(i);
				//这个是定义activity切换时的动画效果的
				overridePendingTransition(R.anim.alpha_in, R.anim.alpha_out);
				break;
				
			default : 
				break;
		}
	}

}


 

我们还要新建一个类用来做为选择的呢

com.xiaobin.security.ui.SelectContactActivity

package com.xiaobin.security.ui;

import java.util.List;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.xiaobin.security.R;
import com.xiaobin.security.domain.ContactInfo;
import com.xiaobin.security.engine.ContactInfoService;

public class SelectContactActivity extends Activity
{
	private ListView lv;
	private List<ContactInfo> infos;
	
	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.select_contact);
		
		infos = new ContactInfoService(this).getContactInfos();
		
		lv = (ListView) findViewById(R.id.lv_select_contact);
		lv.setAdapter(new SelectContactAdapter());
		lv.setOnItemClickListener(new OnItemClickListener()
		{
			@Override
			public void onItemClick(AdapterView<?> parent, View view, int position, long id)
			{
				String number = infos.get(position).getPhone();
				Intent intent = new Intent();
				intent.putExtra("number", number);
				//把要返回的数据设置进去,便通过onActivityResult(int, int, Intent)拿到
				setResult(1, intent);
				finish();
			}
		});
	}
	
	//=================================================================================
	
	private class SelectContactAdapter extends BaseAdapter
	{

		@Override
		public int getCount()
		{
			return infos.size();
		}

		@Override
		public Object getItem(int position)
		{
			return infos.get(position);
		}

		@Override
		public long getItemId(int position)
		{
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent)
		{
			ContactInfo info = infos.get(position);
			View view;
			ContactViews views;
			if(convertView == null)
			{
				views = new ContactViews();
				view = View.inflate(SelectContactActivity.this, R.layout.contact_item, null);
				views.tv_name = (TextView) view.findViewById(R.id.tv_contact_name);
				views.tv_number = (TextView) view.findViewById(R.id.tv_contact_number);
				views.tv_name.setText("联系人:" + info.getName());
				views.tv_number.setText("联系电话:" + info.getPhone());
				
				view.setTag(views);
			}
			else
			{
				view = convertView;
			}
			return view;
		}
		
	}
	
	private class ContactViews
	{
		TextView tv_name;
		TextView tv_number;
	}

}


 

这个类是非常简单的,只有一个listView

大家也可以看到,这个类里面有一个adapter,这个是为了方便,所以写在里面的,而且那个listview我们也用到了上一次的优化方法

如果有什么不了解的,可以回去看一下我们前面的那个Android项目实战--手机卫士06--GridView的优化与修改Button的显示样式

好啦,下面是activity的布局文件,还有listview的布局文件

select_contact.xml

<?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:background="@android:color/white"
    android:orientation="vertical" >
    
    <ListView 
        android:id="@+id/lv_select_contact"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

 

contact_item.xml

<?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_contact_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    
    <TextView 
        android:id="@+id/tv_contact_number"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>


 

好啦,获取联系人的操作,我们也差不多完成的啦,现在还要加上两个权限

    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_CONTACTS"/>


 

到现在为止,获取联系人的操作就完成的啦,

因为之前都是清一色的切换效果,所以我现写多了两个切换效果,大家可以看看,也是很简单的

至于怎么写那些效果,那就要看一下我们的前一篇文章啦

translate_in.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="100%p"
    android:toXDelta="0"
    android:duration="400" >
    <!-- 100%p是指从看不到的地方进入到0这个地方 -->

</translate>


translate_out.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="0"
    android:toXDelta="-100%p"
    android:duration="400" >
    <!-- 100%p是指从看不到的地方进入到0这个地方 -->

</translate>


 

好啦,今天要说的基本上已经说完的啦

如果有什么不明白的,或有什么指导的,欢迎留言

 

今天源码下载
 

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