1.0、查看系統通訊錄的表,表路徑:data—>data—>com.android.providers.contacts—>databases—>contacts2.db
1.1、其中重要的表有:
- raw_contacts表(可查看上次通話記錄、可獲取聯繫人的id(“contact_id”));
- data表(保存了聯繫人的號碼與名字,可獲取聯繫人的rid(“raw_contact_id”)(id==rid),可獲取信息種類的id(“mimetype_id”));
- mimetype表(保存了信息種類名稱,id=5(vnd.android.cursor.item/phone_v2)電話號碼)
- 視圖表:view_data表()可查看多表間的數據關係
2.0、流程:
- 首先,從raw_contacts中讀取聯繫人的id(“contact_id”)
- 其次, 根據contact_id從data表中查詢出相應的電話號碼和聯繫人名稱
- 然後,根據mimetype來區分哪個是聯繫人,哪個是電話號碼
- 最後將數據填充到ListView中
3.0、佈局:
1. activity_main.xml:
<ListView
android:id="@+id/lv_list"
android:layout_width="match_parent"
android:layout_height="match_parent" />
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2、contact_list_item.xml:
<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp" />
<TextView
android:id="@+id/tv_phone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp" />
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3.1、代碼:
public class MainActivity extends Activity {
private ListView lvList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lvList = (ListView) findViewById(R.id.lv_list);
ArrayList<HashMap<String, String>> readContact = readContact();
// System.out.println(readContact);
lvList.setAdapter(new SimpleAdapter(this, readContact,
R.layout.contact_list_item, new String[] { "name", "phone" },
new int[] { R.id.tv_name, R.id.tv_phone }));
}
/**
*得到聯繫人
**/
private ArrayList<HashMap<String, String>> readContact() {
// 首先,從raw_contacts中讀取聯繫人的id("contact_id")
// 其次, 根據contact_id從data表中查詢出相應的電話號碼和聯繫人名稱
// 然後,根據mimetype來區分哪個是聯繫人,哪個是電話號碼
Uri rawContactsUri = Uri.parse("content://com.android.contacts/raw_contacts");
Uri dataUri = Uri.parse("content://com.android.contacts/data");
ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
// 從raw_contacts中讀取所有聯繫人的id("contact_id")
Cursor rawContactsCursor = getContentResolver().query(rawContactsUri,
new String[] { "contact_id" }, null, null, null);
if (rawContactsCursor != null) {
while (rawContactsCursor.moveToNext()) {
String contactId = rawContactsCursor.getString(0);
// System.out.println("得到的contact_id="+contactId);
// 根據contact_id從data表中查詢出相應的電話號碼和聯繫人名稱, 實際上查詢的是視圖view_data
Cursor dataCursor = getContentResolver().query(dataUri,
new String[] { "data1", "mimetype" }, "contact_id=?",
new String[] { contactId }, null);
if (dataCursor != null) {
HashMap<String, String> map = new HashMap<String, String>();
while (dataCursor.moveToNext()) {
String data1 = dataCursor.getString(0);
String mimetype = dataCursor.getString(1);
// System.out.println(contactId + ";" + data1 + ";"
// + mimetype);
if ("vnd.android.cursor.item/phone_v2".equals(mimetype)) {//手機號碼
map.put("phone", data1);
} else if ("vnd.android.cursor.item/name".equals(mimetype)) {//聯繫人名字
map.put("name", data1);
}
}
list.add(map);
dataCursor.close();
}
}
rawContactsCursor.close();
}
return list;
}
}
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3.2、添加權限:
<uses-permission android:name="android.permission.READ_CONTACTS"/>
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4.0、可調取系統的通訊錄程序得到聯繫人數據
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附錄關於權限的處理
https://inthecheesefactory.com/blog/things-you-need-to-know-about-android-m-permission-developer-edition/en
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本篇文章的權限處理
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { int hasWriteContactsPermission = checkSelfPermission(Manifest.permission.READ_CONTACTS); if (hasWriteContactsPermission != PackageManager.PERMISSION_GRANTED) { requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, REQUEST_CODE_ASK_PERMISSIONS); return; } }