我正在创建一个Android应用程序，我想从mysql访问用户名，电话号码和电子邮件地址的数据库。我想比较Android手机联系人列表中的手机号码和手机没有从mysql数据库获取。为此，我使用2个arraylist 1st用于电话联系，第2个用于mysql电话号码。 我的主要问题是当我比较两个arraylist然后我没有显示结果。 我在这里附上代码请有人帮我解决这个问题。
public class PhoneNoActivity extends Activity{
JSONArray jArray,jArray1;
JSONObject jobj;
String result = null,phone=null;
InputStream is = null;
StringBuilder sb=null;
double lat=0;
double lon=0;
String user=null;
ArrayList<NameValuePair> nameValuePairs;
ListView lv;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
String phno=null;
ArrayList<String> cntPhone=new ArrayList<String>();
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?", new String[]{id}, null);
while (pCur.moveToNext()) {
String phoneNo = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
if(phoneNo.length()>10) {
phno=phoneNo.subSequence(phoneNo.length()-10, phoneNo.length()).toString();
// Log.e(name, phno);
}
cntPhone.add(phoneNo);
}
pCur.close();
}
}
}
ArrayList<String> cntOnline=new ArrayList<String>();
try {
nameValuePairs = new ArrayList<NameValuePair>();
/*String phone=null;
for(int k=0;k<=cntPhone.size();k++) {
Log.e("k",k+"");
phone=cntPhone.get(k);
nameValuePairs.add(new BasicNameValuePair("phone", phone));
*/
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/ah_login_api/select.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
sb = new StringBuilder();
sb.append(reader.readLine() + "\n");
String line="0";
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
Log.e("result=", result);
jArray = new JSONArray(result);
JSONObject json_data=null;
for(int i=0;i<jArray.length();i++){
json_data = jArray.getJSONObject(i);
user=json_data.getString("user");
phone=json_data.getString("phone");
lat=json_data.getDouble("email");
cntOnline.add(phone);
}
for(String s:cntOnline) {
for(String s1:cntPhone ) {
if(s.equals(s1)) {
Log.e("match found", phone);
}
}
}
/*
for(int l=0;l<cntOnline.size();l++) {
Log.e("loop start", ""+l);
for(int k=0;k<cntPhone.size();k++) {
if(cntPhone.get(k).trim().equals(cntOnline.get(l).trim())) {
Log.e("match found", phone);
}
}
}*/
//}
} catch(Exception ex) {
Log.e("Exception in ",ex.toString());
}
}
}
这是我的PHP代码，我可以从中访问详细信息
<?php
mysql_connect("localhost","root","");
mysql_select_db("MyContact");
$sql=mysql_query("select * from newuser");
while($row=mysql_fetch_assoc($sql))
$output[]=$row;
print(json_encode($output));
mysql_close();
?>
答案 0 :(得分：2)
/ *从电话联系人列表* /
中检索电话号码public ArrayList<String> getNumber() {
String phoneNumber;
ArrayList<String> contact_number = new ArrayList<String>();
ContentResolver cr = getApplicationContext().getContentResolver();
Cursor phones = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null,
null, null);
while (phones.moveToNext()) {
phoneNumber = phones
.getString(phones
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
System.out.println(".................." + phoneNumber);
contact_number.add(phoneNumber);
}
phones.close();
return contact_number;
}
/ *使用对象“Contact”从MySQL数据库中获取Numbers并将其与“getNumber（）”方法进行比较，该方法从电话联系人列表中检索电话号码* /
@SuppressWarnings("unused")
private Contact convertContact(JSONObject obj) throws JSONException {
Contact contact = new Contact();
String name = obj.getString("user_name");
String mobile_no = obj.getString("mobile_no");
boolean isMatched = false;
contact_number = getNumber();
for (int i = 0; i < contact_number.size(); i++) {
if (mobile_no.equals(contact_number.get(i))) {
isMatched = true;
contact.setName(name);
contact.setMobileNo(mobile_no);
}
}
return isMatched ? contact : null;
}
/ *如果数据库中的号码与电话联系人列表匹配，请在listview * /
中添加并生成private class AsyncTasak extends
AsyncTask<String, Void, ArrayList<Contact>> {
@Override
protected void onPostExecute(ArrayList<Contact> result) {
super.onPostExecute(result);
arrayadapter.setItemList(result);
arrayadapter.notifyDataSetChanged();
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected ArrayList<Contact> doInBackground(String... params) {
ArrayList<Contact> result = new ArrayList<Contact>();
try {
URL u = new URL(params[0]);
HttpURLConnection conn = (HttpURLConnection) u.openConnection();
conn.setRequestMethod("GET");
conn.connect();
InputStream is = conn.getInputStream();
byte[] b = new byte[1024];
ByteArrayOutputStream baos = new ByteArrayOutputStream();
while (is.read(b) != -1)
baos.write(b);
String JSONResp = new String(baos.toByteArray());
JSONArray arr = new JSONArray(JSONResp);
for (int i = 0; i < arr.length(); i++) {
Contact temp = convertContact(arr.getJSONObject(i));
if (temp != null) {
result.add(temp);
}
}
return result;
} catch (Throwable t) {
t.printStackTrace();
}
return null;
}