1、佈局檔案

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/result"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@android:color/black"
        android:textSize="25dp" />

</LinearLayout>
 

public class MainActivity extends Activity {

	private String[] columns = {Contacts._ID,//希望獲得ID值
			Contacts.DISPLAY_NAME};//希望獲得姓名
	
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TextView tv = (TextView)findViewById(R.id.result);
        tv.setText(getQueryData());//為標籤設定資料
    }
    private String getQueryData(){
    	StringBuilder sb = new StringBuilder();//用於儲存字串
    	ContentResolver resolver = getContentResolver();//獲得ContentResolver物件
    	Cursor cursor = resolver.query(Contacts.CONTENT_URI, columns, null, null, null);//查詢記錄
    	int idIndex = cursor.getColumnIndex(columns[0]);//獲得id記錄的索引值
    	int displayNameIndex = cursor.getColumnIndex(columns[1]);//獲得姓名記錄的索引值
    	for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {// 迭代全部記錄
            int id = cursor.getInt(idIndex);
            String displayName = cursor.getString(displayNameIndex);
            sb.append(id + ": " + displayName + "\n");
        }
    	cursor.close();//關閉Cursor
    	return sb.toString();//返回查詢結果
    }
}
 

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