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首先,我把把昨天忘記了的兩張設置嚮導的圖片放出來先
我們從上面的第一張圖片可以看到,我們有一個選擇聯繫人這一操作,那麼怎樣才能獲取到手機裏面的聯繫人呢,其實方法有很多的,現在我們來講一下我們這個項目裏面用到的方法
其實要想知道怎樣獲取手機裏面的聯繫人,去看一下Android自己的源碼就知道的了
我們只要把platform/packages/providers/ContactsProvider這一部分的內容下載下來看看就可以的啦
下面是我下載之後,打開裏面的AndroidManifest的內容
<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>
我們可以看一下第一個provider,裏面就有我們想要的uri還有它已經寫好了的類了,各位有興趣的可以去看一下是如何實現的,
其實我們要獲取的東西,都是存放在一個數據庫裏面的,我們不妨把那個數據庫拿出來看一下,拿到那個數據庫也很簡單,只要在Eclipse裏面的ddms界面裏面,在右上邊
那個contacts2.db就是我們想要的東西啦
我們可以把它導出來,然後用SQLite Database browser來打開它
獲取手機裏面的聯繫人,我們只要關注三個表就可以啦,一個是raw_contacts data還有一個mime_type這三個表就行啦
mime_type存放的就是一些類型,是電話,還是短信,還是E-mail這些
data就是存放一些數據的東西
raw_contacts就是存放一些命名什麼的
這三個表的關係就是下面一樣的啦
從上面的可以看到,我們可以通過raw_contacts拿到那個id還有display_name然後就去data那裏找到對應的raw_contact_id,這樣就可以獲得對應的數據啦,然後還可以通過mimetype_id在mime_type表裏面找出想要的類型
好啦,原理就是這樣啦,下面我們來看一下代碼怎麼寫
我們先要用一個model類來存放我們的數據
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;
}
}
然後呢,我們就可以寫我們獲得手機聯繫人的代碼啦
新建一個類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();
//在源碼的AndroidManifest裏面可以看到這些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);
//通過raw_contacts裏面的id拿到data裏面對應的數據
Cursor dataCursor = contentResolver.query(dataUri, null, "raw_contact_id = ? ", new String[] {id}, null);
while(dataCursor.moveToNext())
{
String type = dataCursor.getString(dataCursor.getColumnIndex("mimetype"));
//根據類型,只要電話這種類型的數據
if(type.equals("vnd.android.cursor.item/phone_v2"))
{
String number = dataCursor.getString(dataCursor.getColumnIndex("data1"));//拿到數據
info.setPhone(number);
}
}
dataCursor.close();
infos.add(info);
info = null;
}
cursor.close();
return infos;
}
}
因爲我們是點擊按鈕,然後打開一個activity,然後選擇好了之後,再把值返回到原來的activity那裏的,所以我們就要用到startActivityForResult這個方法啦
好,我們來看一下setup_guide3這個嚮導頁面的邏輯是怎樣寫的
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);
}
//重寫這個方法,從acitivty裏面拿到數據
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
//resultCode是乃至區分拿到的activity是從那一個activity裏面拿到的
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);
//啓動一個activity來獲取數據,獲取到的數據是在重寫的onActivityResult這個方法裏面拿到的
startActivityForResult(selectIntent, 1);
break;
case R.id.bt_guide_next :
String number = et_phoneNumber.getText().toString().trim();
if(number.equals(""))
{
Toast.makeText(this, "安全號碼不能爲空", 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);
//這個是定義activity切換時的動畫效果的
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);
//這個是定義activity切換時的動畫效果的
overridePendingTransition(R.anim.alpha_in, R.anim.alpha_out);
break;
default :
break;
}
}
}
我們還要新建一個類用來做爲選擇的呢
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);
//把要返回的數據設置進去,便通過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("聯繫人:" + info.getName());
views.tv_number.setText("聯繫電話:" + info.getPhone());
view.setTag(views);
}
else
{
view = convertView;
}
return view;
}
}
private class ContactViews
{
TextView tv_name;
TextView tv_number;
}
}
這個類是非常簡單的,只有一個listView
大家也可以看到,這個類裏面有一個adapter,這個是爲了方便,所以寫在裏面的,而且那個listview我們也用到了上一次的優化方法
如果有什麼不瞭解的,可以回去看一下我們前面的那個Android項目實戰--手機衛士06--GridView的優化與修改Button的顯示樣式
好啦,下面是activity的佈局文件,還有listview的佈局文件
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,獲取聯繫人的操作,我們也差不多完成的啦,現在還要加上兩個權限
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.WRITE_CONTACTS"/>
到現在爲止,獲取聯繫人的操作就完成的啦,
因爲之前都是清一色的切換效果,所以我現寫多了兩個切換效果,大家可以看看,也是很簡單的
至於怎麼寫那些效果,那就要看一下我們的前一篇文章啦
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是指從看不到的地方進入到0這個地方 -->
</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是指從看不到的地方進入到0這個地方 -->
</translate>
好啦,今天要說的基本上已經說完的啦
如果有什麼不明白的,或有什麼指導的,歡迎留言