因为该示例需要读取联系人信息,所以必须在AndroidManifest.xml里面声明:
<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
首先是窗口界面,包含了六个TextView(用来显示联系人信息)和一个Button(用来获取该联系人信息),如下图:
代码如下:
import java.util.HashMap;
import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Contacts;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
private TextView nameTextView, phoneTextView, mobileTextView;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
nameTextView = (TextView) findViewById(R.id.nameTextView);
phoneTextView = (TextView) findViewById(R.id.phoneTextView);
mobileTextView = (TextView) findViewById(R.id.mobileTextView);
button = (Button) findViewById(R.id.button);
button.setText(R.string.getContacts);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
HashMap<String, String> map = getOneContactInfo();
String name = map.get("NAME");
String phone = map.get("PHONE");
String mobile = map.get("MOBILE");
nameTextView.setText(name);
phoneTextView.setText(phone);
mobileTextView.setText(mobile);
}
});
}
private HashMap<String, String> getOneContactInfo() {
HashMap<String, String> map = new HashMap<String, String>();
Uri peopleBaseUri = ContactsContract.Contacts.CONTENT_URI;
//例子里拿第一位联系人作测试
Uri myPeopleUri = Uri.withAppendedPath(peopleBaseUri, "1");
Cursor cursor = managedQuery(myPeopleUri, null, null, null, ContactsContract.Contacts._ID + "=1");
int nameIndex = cursor.getColumnIndex(Contacts.DISPLAY_NAME);
String name = "";
while(cursor.moveToNext()) {
name = cursor.getString(nameIndex);//获取联系人姓名
//判断是否有电话号码
String hasPhone = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if("1".equalsIgnoreCase(hasPhone)) {
hasPhone = "true";
} else {
hasPhone = "false";
}
if(Boolean.parseBoolean(hasPhone)) {
Cursor phones = this.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null, null, null, null);
String phoneNo = "";
while(phones.moveToNext()) {
//获取住宅电话号码
phoneNo = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
}
map.put("PHONE", phoneNo);
String mobileNo = "";
Cursor mobile = this.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=1", null, null);
while(mobile.moveToNext()) {
//获取手机号码
mobileNo = mobile.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
}
map.put("MOBILE", mobileNo);
phones.close();
}
}
map.put("NAME", name);
cursor.close();
return map;
}
}
在返回的类型之中使用了HashMap来储存数据,然后从键值对中取出数据给页面TextView赋值,运行结果如下: