android 通过ContentResolver获得联系人数据

package MyGetContacts.code;

import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.widget.TextView;

public class MainActivity extends Activity {
/** Called when the activity is first created. */

TextView textView;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

textView = (TextView)findViewById(R.id.textView);
String str = getQueryData();
textView.setText(str);

}

private String getQueryData()
{
String result = "";
ContentResolver resolver = getContentResolver();
Cursor cursor = resolver.query(ContactsContract.Contacts.CONTENT_URI,null,null,null,null);

int idIndex = cursor.getColumnIndex(ContactsContract.Contacts._ID);
int nameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);

//for(cursor.moveToFirst();(!cursor.isAfterLast());cursor.moveToNext())
while(cursor.moveToNext())
{
String contactId = cursor.getString(idIndex);

Cursor phone = resolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + contactId,
null,null);

result = result + contactId + "\t";

while(phone.moveToNext())
{
int i = phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String num = phone.getString(i);
result += num;
}

result = result + cursor.getString(nameIndex) + "\t\n";

phone.close();
}
cursor.close();

return result;
}
}

最后别忘了加上 <uses-permission android:name="android.permission.READ_CONTACTS"/> 这个权限，否则运行会出错

（真不知道google加这些权限干嘛用，脑残~~~）

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