ListView的使用，獲取聯繫人數據

直接貼代碼：

 

public class QueryActivity extends Activity {
    private EditText et;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.query);
        et = (EditText) this.findViewById(R.id.query_et);
    }

    public void select(View view) {
        Intent intent = new Intent(this, SelectContactActivity.class);
        startActivityForResult(intent, 0);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (data != null) {
            String number = data.getStringExtra("number");
            et.setText(number);
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
}

 

public class SelectContactActivity extends Activity {
    private ListView lv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setContentView(R.layout.select_contact);
        super.onCreate(savedInstanceState);
        lv = (ListView) findViewById(R.id.lv_select_contact);
        // TODO:如果聯繫人比較多 需要花費一定的時間,最好放在子線程裏面執行.
        ContactInfoProvider provider = new ContactInfoProvider(this);
        final List<ContactInfo> infos = provider.getContacts();
        String[] numbers = new String[infos.size()];
        for (int i = 0; i < infos.size(); i++) {
            numbers[i] = infos.get(i).getName() + "\n"
                    + infos.get(i).getNumber();
        }
        lv.setAdapter(new ArrayAdapter<String>(this, R.layout.contact_item,
                R.id.tv_contact_item_info, numbers));

        lv.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {

                String number = infos.get(position).getNumber();
                Intent data = new Intent();
                data.putExtra("number", number);
                setResult(0, data);
                finish();
            }
        });
    }
}

 

<?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:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:text="選擇聯繫人"
        android:textColor="#66ff00"
        android:textSize="28sp" >
    </TextView>

    <View
        android:layout_width="fill_parent"
        android:layout_height="1dip"
        android:layout_marginTop="5dip"
        android:background="@drawable/devide_line"
        android:paddingTop="5dip" >
    </View>

    <ListView
        android:id="@+id/lv_select_contact"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_marginTop="5dip" >
    </ListView>

</LinearLayout>

 

public class ContactInfoProvider {
    private Context context;

    public ContactInfoProvider(Context context) {
        this.context = context;
    }

    /**
     * 獲取所有聯繫人信息的業務方法
     * @return
     */
    public List<ContactInfo> getContacts() {
        List<ContactInfo> contactInfos = new ArrayList<ContactInfo>();
        // 1.查詢raw_contacts表 獲取所有聯繫人的id
        Uri rawUri = Uri.parse("content://com.android.contacts/raw_contacts");
        Uri dataUri = Uri.parse("content://com.android.contacts/data");
        Cursor idCursor = context.getContentResolver().query(rawUri,
                new String[] { "contact_id" }, null, null, null);
        while (idCursor.moveToNext()) {
            String id = idCursor.getString(0); // 得到聯繫人的id
            ContactInfo info = new ContactInfo();
            Cursor dataCursor = context.getContentResolver().query(dataUri,
                    null, "raw_contact_id=?", new String[] { id }, null);
            while (dataCursor.moveToNext()) {
                String data1 = dataCursor.getString(dataCursor
                        .getColumnIndex("data1"));
                String mime = dataCursor.getString(dataCursor
                        .getColumnIndex("mimetype"));
                if ("vnd.android.cursor.item/phone_v2".equals(mime)) {
                    info.setNumber(data1);
                } else if ("vnd.android.cursor.item/name".equals(mime)) {
                    info.setName(data1);
                }

            }
            dataCursor.close();
            contactInfos.add(info);
            info = null;
        }
        idCursor.close();
        return contactInfos;
    }
}

 

<?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="wrap_content"
    android:gravity="center_horizontal"
    android:orientation="vertical" >

    <TextView
        android:gravity="center_horizontal"
        android:text="聯繫人信息"
        android:id="@+id/tv_contact_item_info"
        style="@style/text_content_style" />

</LinearLayout>

 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="text_title_style">
        <item name="android:layout_width">fill_parent</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:textColor">#66ff00</item>
        <item name="android:textSize">28sp</item>
    </style>
    <style name="text_content_style" parent="@style/text_title_style">
        <item name="android:paddingTop">5dip</item>
        <item name="android:textSize">22sp</item>
    </style>

</resources>