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我以JSON以下數據我怎麼會從這個文件中檢索數據從android中通過php檢索Json的數據？
{"first_name":"immi","last_name":"Ahmad","contact_no":"0333333","dob":"2010-09-29","gender":"Male","pro_id":"3"}
也即時通訊使用HTTP請求從android.i希望得到各個領域，並將其存儲在一個局部變量來存取權限這個文件android.i嘗試了以下，但徒勞無功。
JSONObject json_data = new JSONObject(result);
json_data.getJSONObject("userinfo");
json_data.getString("first_name");
這是我的Android完整的類
public class ProfileActivity extends ActionBarActivity {
//data for through http request
static InputStream is = null;
String result = "flag";
String line = null;
int userId;
String action="select";
String workTable="user";
ArrayList<HashMap<String, String>> personList;
//till here for through http request
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
userId = ((GlobalValues) this.getApplication()).getUserId();
Toast.makeText(ProfileActivity.this, "user id is"+userId, Toast.LENGTH_SHORT).show();
select();
//for retrieval oncreate
}
public void select() {
final ArrayList<HashMap<String, String>> personList;
personList = new ArrayList<HashMap<String, String>>();
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("action", action));
nameValuePairs.add(new BasicNameValuePair("worktable",workTable));
nameValuePairs.add(new BasicNameValuePair("user_id",String.valueOf(userId)));
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http......");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.e("pass 1", "connection success ");
} catch (Exception e) {
Log.e("Fail 1", e.toString());
Toast.makeText(getApplicationContext(), "Invalid IP Address",
Toast.LENGTH_LONG).show();
}
try {
BufferedReader reader = new BufferedReader
(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result = sb.toString();
Log.e("pass 2", "connection success ");
} catch (Exception e) {
Log.e("Fail 2", e.toString());
}
try {
JSONObject userinfo= new JSONObject(result);
String fname= userinfo.getString("first_name");
Toast.makeText(ProfileActivity.this, "name is"+fname, Toast.LENGTH_SHORT).show();
String fname= userinfo.getString("first_name");
Toast.makeText(ProfileActivity.this, "name is"+fname, Toast.LENGTH_SHORT).show();
// JSONArray peoples = json_data.getJSONArray("userinfo");
/* for (int i = 0; i < peoples.length(); i++) {
JSONObject c = peoples.getJSONObject(i);
String first_name = null, last_name = null, gender = null,contact_number=null,dob=null,profession_id=null;
first_name = c.getString("first_name");
last_name = c.getString("last_name");
contact_number = c.getString("contact_no");
dob=c.getString("dob");
gender=c.getString("gender");
profession_id=c.getString("pro_id");
final HashMap<String, String> persons = new HashMap<String, String>();
persons.put("firstName", first_name);
persons.put("last_name", last_name);
persons.put("contact_number", contact_number);
persons.put("gender", gender);
persons.put("dob", dob);
persons.put("pro_id", profession_id);
personList.add(persons);
Toast.makeText(ProfileActivity.this, "your name is "+first_name, Toast.LENGTH_SHORT).show();
}*/
}catch (Exception e){
Log.e("fil 3",e.toString());
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_profile, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
item.getItemId();
switch (item.getItemId()) {
case R.id.action_settings:
goToHome();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
public void goToHome(){
Intent gotohome =new Intent(this,MapsActivity.class);
startActivity(gotohome);
}
public void goToEditProfile(View view){
Intent gotoeditprofile=new Intent(this,TabedActivity.class);
startActivity(gotoeditprofile);
}
}
，這是我的PHP statment返回JSON作爲上述
$user_id= $_GET['user_id'];
$sqlselectuser="SELECT first_name,last_name,contact_no,dob,gender,pro_id FROM user WHERE user_id='$user_id'";
$ansuser=mysqli_query($con,$sqlselectuser);
$resuser=mysqli_fetch_assoc($ansuser);
if($resuser['dob']=="0000-00-00"){
$userinfo = array("first_name"=>$resuser['first_name'],"last_name"=>$resuser['last_name'],
"contact_no"=>$resuser['contact_no'],"dob"=>date("Y-m-d"),"gender"=>$resuser['gender'],
"pro_id"=>$resuser['pro_id']);
echo json_encode($userinfo);
非常感謝...晚上代表，但幫助了我 –