I have a spinner that I put its items dynamically from my database but the problem is I can't know which item is selected by the method setOnItemSelectedListener
Here is my java code :
public class Choix extends Activity {
JSONArray ja1 = null;
List<String> list = new ArrayList<String>();
ArrayAdapter<String> dataAdapter;
Spinner spinner;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.choix_espace);
spinner = (Spinner) findViewById(R.id.spinner);
liste_ecoles k = new liste_ecoles();
k.execute();
dataAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item, list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(dataAdapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,int arg2, long arg3) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), ""+arg2, Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
private class liste_ecoles extends AsyncTask<String, Integer, Object> {
String ch1="";
#Override
protected Object doInBackground(String... params) {
JSONArray ja = null;
try {
URL twitter = new URL("...");
URLConnection tc = twitter.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
tc.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
ja = new JSONArray(line);
}
} catch (Exception e) {
}
return ja;
}
#Override
protected void onPostExecute(Object resultat) {
JSONArray ja = (JSONArray) resultat;
if (resultat != null) {
try {
for (int i = 0; i < ja.length(); i++) {
JSONObject jo1 = null;
jo1 = ja.getJSONObject(i);
ch1 = jo1.getString("nom_ecole");
list.add(ch1);
}
}
catch (Exception e) {
}
}
}
}
}
so can someone helps me please ?
I solved my problem ; I've just added " dataAdapter.notifyDataSetChanged(); " after adding items on my spinner
Related
I want to get all data which is available with the specific username from the table in listview using adapter.
I got error "org.json.JSONException: Value [] of type org.json.JSONArray cannot be converted to JSONObject".
below is code
PHP file is working perfectly. I get all data which is available with the specified username.
ExpenseList.php
<?php
require_once("Config.php");
$response = array();
if(isset($_GET['apicall'])){
switch($_GET['apicall']){
case 'expense':
if(isTheseParametersAvailable(array('username'))){
$username = $_POST['username'];
$stmt = $con->prepare("SELECT * FROM Expense_Master WHERE VV_User_Name = '$username' ORDER BY VD_Expense_Date ASC");
$stmt->execute();
$stmt->store_result();
if($stmt->num_rows > 0){
$stmt->bind_result($expenseid, $userid, $username, $entrydate, $expensedate, $credit, $debit, $description, $modifieddate);
$products = array();
while($stmt->fetch()){
$temp = array();
$temp['expenseid'] = $expenseid;
$temp['userid'] = $userid;
$temp['username'] = $username;
$temp['entrydate'] = $entrydate;
$temp['expensedate'] = $expensedate;
$temp['credit'] = $credit;
$temp['debit'] = $debit;
$temp['description'] = $description;
$temp['modifieddate'] = $modifieddate;
array_push($products, $temp);
$response['error'] = false;
$response['message'] = 'Fetch successfull';
}
}else{
$response['error'] = false;
$response['message'] = 'Invalid username';
}
}
break;
$response['error'] = true;
$response['message'] = 'Invalid Operation Called';
}
}else{
$response['error'] = true;
$response['message'] = 'Invalid API Call';
}
echo json_encode($response);
echo json_encode($products);
function isTheseParametersAvailable($params){
foreach($params as $param){
if(!isset($_POST[$param])){
return false;
}
}
return true;
}
?>
Here is ExpenseList.JAVA
private static final String EXPENSE_URL = "http:server.com/ExpenseList.php?apicall=expense";
private List<ExpenseListNotes> userNotes = new ArrayList<>();
ListView listView;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_expense_list);
spinnerUserNotes = new ArrayList<SpinnerUserNotes>();
expenseData();
}
private void expenseData() {
//if everything is fine
class expenseData extends AsyncTask<Void, Void, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
try {
JSONArray array = new JSONArray(s);
for (int i = 0; i < array.length(); i++) {
//getting product object from json array
JSONObject product = array.getJSONObject(i);
userNotes.add(new ExpenseListNotes(
product.getInt("expenseid"),
product.getString("userid"),
product.getString("username"),
product.getString("entrydate"),
product.getString("expensedate"),
product.getString("credit"),
product.getString("debit"),
product.getString("description")));
}
ExpenseListAdapter adapter = new ExpenseListAdapter(ExpenseList.this, userNotes);
listView.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Error : "+e.toString(), Toast.LENGTH_LONG).show();
Log.e("Error", e.toString());
}
}
#Override
protected String doInBackground(Void... voids) {
//creating request handler object
RequestHandler requestHandler = new RequestHandler();
//creating request parameters
HashMap<String, String> params = new HashMap<>();
params.put("username", "Alpesh");
//returing the response
return requestHandler.sendPostRequest(URL_EXPENSE, params);
}
}
expenseData ul = new expenseData();
ul.execute();
}
Here is AdapterClass
private class ExpenseListAdapter extends BaseAdapter
{
private Context context;
private List<ExpenseListNotes> invoiceModelArrayList;
public ExpenseListAdapter(Context context, List<ExpenseListNotes> invoiceModelArrayList) {
this.context = context;
this.invoiceModelArrayList = (List<ExpenseListNotes>) invoiceModelArrayList;
}
#Override
public int getCount() {
return invoiceModelArrayList.size();
}
#Override
public Object getItem(int i) {
return invoiceModelArrayList.get(i);
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(final int i, View v, ViewGroup viewGroup)
{
final ViewHolder holder;
ButterKnife.bind(this, v);
if (v == null)
{
holder = new ViewHolder();
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.row_expense_list, null, true);
holder.tvRELUserid = v.findViewById(R.id.tvRELUserid);
holder.tvRELExpenseID = v.findViewById(R.id.tvRELExpenseID);
holder.tvRELUsername = v.findViewById(R.id.tvRELUsername);
holder.tvRELCredit = v.findViewById(R.id.tvRELCredit);
holder.tvRELDebit = v.findViewById(R.id.tvRELDebit);
holder.tvRELExpenseDate = v.findViewById(R.id.tvRELExpenseDate);
holder.tvRELEntryDate = v.findViewById(R.id.tvRELEntryDate);
holder.tvRELDescription = v.findViewById(R.id.tvRELDescription);
holder.btnDelete = v.findViewById(R.id.btnRELDelete);
holder.btnUpdate = v.findViewById(R.id.btnRELUpdate);
v.setTag(holder);
}
else
{
holder = (ViewHolder)v.getTag();
}
holder.tvRELExpenseID.setText(String.valueOf(invoiceModelArrayList.get(i).getExpenseID()));
holder.tvRELUserid.setText(String.valueOf(invoiceModelArrayList.get(i).getUserID()));
holder.tvRELUsername.setText(String.valueOf(invoiceModelArrayList.get(i).getUsername()));
holder.tvRELCredit.setText(String.valueOf(invoiceModelArrayList.get(i).getCredit()));
holder.tvRELDebit.setText(String.valueOf(invoiceModelArrayList.get(i).getDebit()));
holder.tvRELExpenseDate.setText(String.valueOf(invoiceModelArrayList.get(i).getExpenseDate()));
holder.tvRELEntryDate.setText(String.valueOf(invoiceModelArrayList.get(i).getEntryDate()));
holder.tvRELDescription.setText(String.valueOf(invoiceModelArrayList.get(i).getDescription()));
return v;
}
public void setFilter(List<ExpenseListNotes> newList)
{
invoiceModelArrayList = new ArrayList<>();
invoiceModelArrayList.addAll(newList);
notifyDataSetChanged();
}
}
private class ViewHolder {
TextView tvRELUserid, tvRELExpenseID, tvRELUsername, tvRELCredit, tvRELDebit, tvRELExpenseDate, tvRELEntryDate, tvRELDescription;
Button btnDelete, btnUpdate;
}
Code for RequestHandler.Class
public class RequestHandler
{
public String sendPostRequest(String requestURL, HashMap<String, String> postDataParams)
{
URL url;
StringBuilder sb = new StringBuilder();
try
{
url = new URL(requestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(15000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getPostDataString(postDataParams));
writer.flush();
writer.close();
os.close();
int responseCode = conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
sb = new StringBuilder();
String response;
while ((response = br.readLine()) != null) {
sb.append(response);
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
return sb.toString();
}
//this method is converting keyvalue pairs data into a query string as needed to send to the server
private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException
{
StringBuilder result = new StringBuilder();
boolean first = true;
for (Map.Entry<String, String> entry : params.entrySet())
{
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
}
return result.toString();
}
}
Where am I doing wrong?
I am trying to make a list view. I did it successfully without the photos loading from url without using a custom array adapter. However how can I implement loading images from url without using a custom array adapter?
I am trying to use the working codes from this thread but it is giving an error for holder.
Error Part
icon = new ImageDownloaderTask(holder.imageView).execute(doctorPhoto);
DoctorsActivity.java
public class DoctorsActivity extends AppCompatActivity {
private JSONArray arrayAdapter;
private static final String URL_FOR_BALANCE = "http://192.168.1.28/api2/doctors.php";
String cancel_req_tag = "login";
private ListView lv;
ArrayList<HashMap<String, String>> contactList;
Bitmap icon = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_doctors);
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView(R.layout.toolbar_doctors);
getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.parseColor("#003764")));
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
SharedPreferences sharedPreferences = getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
final String pid = sharedPreferences.getString(Config.UID_SHARED_PREF, null);
contactList = new ArrayList<>();
lv = (ListView) findViewById(R.id.list);
StringRequest strReq = new StringRequest(Request.Method.POST,
URL_FOR_BALANCE, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
JSONArray contacts = jObj.getJSONArray("user");
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
String doctorTitle = c.getString("title");
String doctorName = c.getString("first_name");
String doctorSurname = c.getString("last_name");
String doctorPhoto = c.getString("photo"); //image URL
String doctorMobile = c.getString("mobile");
String doctorFullName = doctorTitle+" "+doctorName+" "+doctorSurname;
icon = new ImageDownloaderTask(holder.imageView).execute(doctorPhoto);
// tmp hash map for single contact
HashMap<String, String> contact = new HashMap<>();
// adding each child node to HashMap key => value
contact.put("photo", icon);
contact.put("doctor", doctorFullName);
contact.put("mobile", doctorMobile);
// adding contact to contact list
contactList.add(contact);
}
ListAdapter adapter = new SimpleAdapter(
DoctorsActivity.this, contactList,
R.layout.activity_doctors_list_item, new String[]{"photo", "doctor",
"mobile"}, new int[]{R.id.photo,
R.id.doctor, R.id.mobile});
lv.setAdapter(adapter);
} else {
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
}
}) {
#Override
protected Map<String, String> getParams() {
// Posting params to login url
Map<String, String> params = new HashMap<String, String>();
params.put("uid", pid);
params.put("lang", Locale.getDefault().getDisplayLanguage());
return params;
}
};
// Adding request to request queue
AppSingleton.getInstance(getApplicationContext()).addToRequestQueue(strReq,cancel_req_tag);
}
class ImageDownloaderTask extends AsyncTask<String, Void, Bitmap> {
private final WeakReference<ImageView> imageViewReference;
public ImageDownloaderTask(ImageView imageView) {
imageViewReference = new WeakReference<ImageView>(imageView);
}
#Override
protected Bitmap doInBackground(String... params) {
return downloadBitmap(params[0]);
}
#Override
protected void onPostExecute(Bitmap bitmap) {
if (isCancelled()) {
bitmap = null;
}
if (imageViewReference != null) {
ImageView imageView = imageViewReference.get();
if (imageView != null) {
if (bitmap != null) {
imageView.setImageBitmap(bitmap);
} else {
Drawable placeholder = null;
imageView.setImageDrawable(placeholder);
}
}
}
}
private Bitmap downloadBitmap(String url) {
HttpURLConnection urlConnection = null;
try {
URL uri = new URL(url);
urlConnection = (HttpURLConnection) uri.openConnection();
final int responseCode = urlConnection.getResponseCode();
if (responseCode != HttpURLConnection.HTTP_OK) {
return null;
}
InputStream inputStream = urlConnection.getInputStream();
if (inputStream != null) {
Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
return bitmap;
}
} catch (Exception e) {
urlConnection.disconnect();
Log.w("ImageDownloader", "Errore durante il download da " + url);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
return null;
}
}
}
Why not use a 3rd party lib like https://github.com/bumptech/glide?
Relevant code:
// ...
new Glide
.with(convertView.getContext())
.load(url)
.centerCrop()
.placeholder(R.drawable.noimage)
.crossFade()
.into(bmImage);
holder.tvName.setText(doctorList.get(position).getName());
holder.tvMobile.setText(doctorList.get(position).getMobile());
// ...
For everyone who wants to have listView with images this my corrected working Custom Adapter:
public class DoctorAdapter extends ArrayAdapter<Doctors>{
ArrayList<Doctors> doctorList;
LayoutInflater vi;
int Resource;
ViewHolder holder;
public DoctorAdapter(Context context, int resource, ArrayList<Doctors> objects) {
super(context, resource, objects);
vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Resource = resource;
doctorList = objects;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
holder = new ViewHolder();
v = vi.inflate(Resource, null);
holder.imageview = (ImageView) v.findViewById(R.id.photo);
holder.tvName = (TextView) v.findViewById(R.id.doctor);
holder.tvMobile = (TextView) v.findViewById(R.id.mobile);
holder.callButton = (Button) v.findViewById(R.id.btnCall);
holder.callButton.setTag(holder);
holder.callButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
ViewHolder viewHolder = (ViewHolder) view.getTag();
String message= viewHolder.tvMobile.getText().toString();
Toast.makeText(view.getContext(), message, Toast.LENGTH_SHORT).show();
}
});
v.setTag(holder);
} else {
holder = (ViewHolder) v.getTag();
}
holder.imageview.setImageResource(R.drawable.noimage);
new DownloadImageTask(holder.imageview).execute(doctorList.get(position).getImage());
holder.tvName.setText(doctorList.get(position).getName());
holder.tvMobile.setText(doctorList.get(position).getMobile());
return v;
}
static class ViewHolder {
public ImageView imageview;
public TextView tvName;
public TextView tvMobile;
public Button callButton;
}
private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public DownloadImageTask(ImageView bmImage) {
this.bmImage = bmImage;
}
protected Bitmap doInBackground(String... urls) {
String urldisplay = urls[0];
Bitmap mIcon = null;
try {
InputStream in = new java.net.URL(urldisplay).openStream();
mIcon = BitmapFactory.decodeStream(in);
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return mIcon;
}
protected void onPostExecute(Bitmap result) {
bmImage.setImageBitmap(result);
}
}
}
I created a listview which contain a url such as abc:554/user=admin&password=&channel=1
When I click the listview,the url would be passed onto the next class and use it for setDataSource.But the problem I am having is that setDataSource does not detect the url.I have tried to hardcode the url and use Toast to display the url when it is trying to connect and it works.But when passing the string,nothing happens.Here are my code
1st class trying to pass the string
OnItemClickListener getURLOnItemClickListener
= new OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
String clickedFile = (String) parent.getItemAtPosition(position);
getURL(clickedFile);
}
};
void getURL(final String file){
if (clickAble == true){
FileInputStream fis;
String content = "";
try {
fis = openFileInput(file);
byte[] input = new byte[fis.available()];
while (fis.read(input) != -1) {}
content += new String(input);
//Toast.makeText(getBaseContext(),content,Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Intent i = new Intent(addressActivity.this, liveActivity.class);
String strName = content.toString();
i.putExtra("urlAddress", strName);
startActivity(i);
}
}
2nd class where the passed string is set
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_live);
final String newString;
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
newString = null;
} else {
newString = extras.getString("urlAddress");
}
} else {
newString = (String) savedInstanceState.getSerializable("urlAddress");
}
urlLink = "rtsp://" + newString + "&stream=1.sdp?";
videoPlay();
}
void videoPlay(){
mPlayer1 = new MediaPlayer();
mCallback1 = new SurfaceHolder.Callback() {
#Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
try {
mPlayer1.setDataSource(urlLink);
mPlayer1.setDisplay(surfaceHolder);
mPlayer1.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mPlayer1.start();
Toast.makeText(getBaseContext(),"Connecting...",Toast.LENGTH_LONG).show();
}
});
mPlayer1.prepareAsync();
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i2, int i3) {
}
#Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
mPlayer1.release();
}
};
final SurfaceView surfaceView1 =
(SurfaceView) findViewById(R.id.surfaceView1);
// Configure the Surface View.
surfaceView1.setKeepScreenOn(true);
// Configure the Surface Holder and register the callback.
SurfaceHolder holder1 = surfaceView1.getHolder();
holder1.addCallback(mCallback1);
holder1.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
I manage to find the answer and it was ridiculously plain and simple.On the second class around these lines of codes on the top
final String newString;
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
newString = null;
} else {
newString = extras.getString("urlAddress");
}
} else {
newString = (String) savedInstanceState.getSerializable("urlAddress");
}
urlLink = "rtsp://" + newString + "&stream=1.sdp?";
videoPlay();
}
All I did was change
urlLink = "rtsp://" + newString + "&stream=1.sdp?";
into
urlLink = "rtsp://" + newString.toString().trim() + "&stream=1.sdp?";
Just adding toString() did not work,so I tried adding trim() and it works.If someone can explain it to me why this work it would be much appreciated
public class MainActivityFragment extends Fragment {
static String[] str1;
GridView gridview;
public MainActivityFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setHasOptionsMenu(true);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.refresh_menu, menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id=item.getItemId();
if (id == R.id.action_refresh) {
updateWeather();
return true;
}
return super.onOptionsItemSelected(item);
}
private void updateWeather() {
fetchMovies movieTask=new fetchMovies();
movieTask.execute("hi");
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootview=inflater.inflate(R.layout.fragment_main, container, false);
gridview=(GridView)rootview.findViewById(R.id.gridview);
//gridview.setAdapter(new ImageAdapter(getActivity()));
return rootview;
}
public class fetchMovies extends AsyncTask<String,Void,String[]> {
private final String LOG_TAG = fetchMovies.class.getSimpleName();
private String[] getMovieDataFromJson(String forecastJsonStr, int numDays)
throws JSONException {
JSONObject movieJson = new JSONObject(forecastJsonStr);
JSONArray movieArray = movieJson.getJSONArray("results");
String[] resultStrs = new String[movieArray.length()];
for(int i = 0; i < movieArray.length(); i++) {
JSONObject getMovie = movieArray.getJSONObject(i);
String moviePosterPathImage=getMovie.getString("poster_path");
String movieOverview=getMovie.getString("overview");
String split_release_date=getMovie.getString("release_date");
String[] Segments = split_release_date.split("-");
String release_date=Segments[1]+"-"+Segments[2]+"-"+Segments[0];
String title=getMovie.getString("title");
Double vote_Average=getMovie.getDouble("vote_average");
resultStrs[i] = moviePosterPathImage + " - " + movieOverview + " - " + release_date + " - " + title + " - " + vote_Average;
}
for (String s : resultStrs) {
Log.v(LOG_TAG, "Forecast entry: " + s);
}
return resultStrs;
}
#Override
protected String[] doInBackground(String... params) {
HttpURLConnection urlConnection=null;
BufferedReader reader=null;
//will contain the raw json response as a string
String forecastJsonStr=null;
int Format_Cnt_Value=7;
String Format_Api="api_key";
try {
String Format_Mode="sort_by";
String Format_Mode_Val="popularity.desc";
String OPEN_MOVIES_API_KEY="-----My Api Key------";
String baseUrl="http://api.themoviedb.org/3/discover/movie?";
Uri builtUri=Uri.parse(baseUrl).buildUpon()
.appendQueryParameter(Format_Mode,Format_Mode_Val)
.appendQueryParameter(Format_Api,OPEN_MOVIES_API_KEY)
.build();
URL url=new URL(builtUri.toString());
Log.v(LOG_TAG,"test_Uri= " + builtUri);
urlConnection= (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
InputStream inputStream=urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
// Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
// But it does make debugging a *lot* easier if you print out the completed
// buffer for debugging.
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
forecastJsonStr = buffer.toString();
Log.v(LOG_TAG, "Forecast JsonString:=" + forecastJsonStr);
} catch (IOException e) {
Log.e(LOG_TAG, "Error ", e);
// If the code didn't successfully get the weather data, there's no point in attemping
// to parse it.
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e(LOG_TAG, "Error closing stream", e);
}
}
};
try {
return getMovieDataFromJson(forecastJsonStr,Format_Cnt_Value);
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String[] Strings) {
if (Strings != null) {
//adp.clear();
str1 = new String[Strings.length];
for (int i = 0; i < Strings.length; i++) {
String[] getImage=Strings[i].split("-");
str1[i] = "http://image.tmdb.org/t/p/w185/" + getImage[0];
}
adp=new ImageAdapter(getActivity(),str1);
gridview.setAdapter(adp); //error
}
}
}
}
what should I do now....
I also have ImageAdapter class
public class ImageAdapter extends BaseAdapter {
private Context mContext;
private String[] mThumbIds;
public ImageAdapter(Context c,String[] str2) {
mContext = c;
mThumbIds=str2;
}
#Override
public int getCount() {
if(mThumbIds!=null)
{
return mThumbIds.length;
}
else
{
return 0;
}
}
#Override
public Object getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
// if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(500,500));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(4, 4, 4, 4);
} else {
imageView = (ImageView) convertView;
}
// imageView.setImageResource(Integer.parseInt(mThumbIds[position]));
imageView.setImageResource(Integer.parseInt(mThumbIds[position]));
return imageView;
}
}
Please help.
I have loaded data from api and want to fill the gridview.
I am getting images in string[]...how to populate gridview..
I need your help to populate gridview using adapter
billions of thanks in advance.
Use Picasso library to load url images in your grid view.Check out this link on how to use picasso.
In your adapter getView() method add this line:
Picasso.with(mContext).load(mThumbIds[position]).into(imageView);
I'm beginning to develop in android using the material from http://developer.android.com.
I took one of their examples and modified it, so that my application can connect to a webpage. It works well when it is opened but if I click on an actionBar item which should open another page the new page isn't opened in the WebView, but it's launched the default browser.
I tried in many way to understand how to avoid that, but my little experience didn't allow me to fixe the problem.
Can you help me?
Many thanks.
Nino
public class MainActivity extends Activity {
public static final String WIFI = "Wi-Fi";
public static final String ANY = "Any";
public static String PAGINA ="http://www.kibao.org/simu/wap.php?lng=";
public static String BASE ="http://www.kibao.org";
public static String ATTUALE ="";
public static String lng = "";
final Context context = this;
private static boolean wifiConnected = false;
private static boolean mobileConnected = false;
public static boolean refreshDisplay = true;
public static String sPref = null;
public static String pagina = "";
private NetworkReceiver receiver = new NetworkReceiver();
#Override
public void onCreate(Bundle savedInstanceState) {
lng = getResources().getString(R.string.lng);
IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
receiver = new NetworkReceiver();
this.registerReceiver(receiver, filter);
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
public void onStart() {
super.onStart();
SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
sPref = sharedPrefs.getString("listPref", "Wi-Fi");
updateConnectedFlags();
if (refreshDisplay) {
ATTUALE=PAGINA.concat(lng);
loadPage(ATTUALE);
}
}
#Override
public void onDestroy() {
super.onStop();
String ciao = getResources().getString(R.string.ciao);
show_toast(ciao);
if (receiver != null) {
this.unregisterReceiver(receiver);
}
}
private void updateConnectedFlags() {
ConnectivityManager connMgr =
(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeInfo = connMgr.getActiveNetworkInfo();
if (activeInfo != null && activeInfo.isConnected()) {
wifiConnected = activeInfo.getType() == ConnectivityManager.TYPE_WIFI;
mobileConnected = activeInfo.getType() == ConnectivityManager.TYPE_MOBILE;
} else {
wifiConnected = false;
mobileConnected = false;
}
}
private void loadPage(String pgUrl) {
if (((sPref.equals(ANY)) && (wifiConnected || mobileConnected))
|| ((sPref.equals(WIFI)) && (wifiConnected))) {
new DownloadWebpageTask().execute(pgUrl);
} else {
showErrorPage();
}
}
// Displays an error if the app is unable to load content.
private void showErrorPage() {
....
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.items, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.menu1:
if (refreshDisplay) {
ATTUALE=BASE.concat("/partite.php?lng=");
ATTUALE=ATTUALE.concat(lng);
loadPage(ATTUALE);
}
return true;
....
default:
return super.onOptionsItemSelected(item);
}
}
private InputStream downloadUrl(String urlString) throws IOException {
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000 /* milliseconds */);
conn.setConnectTimeout(15000 /* milliseconds */);
conn.setRequestMethod("GET");
conn.setDoInput(true);
conn.connect();
InputStream stream = conn.getInputStream();
return stream;
}
public class NetworkReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager connMgr =
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (WIFI.equals(sPref) && networkInfo != null
&& networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
refreshDisplay = true;
Toast.makeText(context, R.string.wifi_connected, Toast.LENGTH_SHORT).show();
} else if (ANY.equals(sPref) && networkInfo != null) {
refreshDisplay = true;
} else {
refreshDisplay = false;
Toast.makeText(context, R.string.lost_connection, Toast.LENGTH_SHORT).show();
}
}
}
private class DownloadWebpageTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... urls) {
try {
return loadWebpageFromNetwork(urls[0]);
} catch (IOException e) {
return getResources().getString(R.string.connection_error);
}
}
#Override
protected void onPostExecute(String result) {
setContentView(R.layout.main);
WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.loadUrl(ATTUALE);
}
}
private String loadWebpageFromNetwork(String urlString) throws IOException {
InputStream stream = null;
try {
stream = downloadUrl(urlString);
pagina = getStringFromInputStream(stream);
} finally {
if (stream != null) {
stream.close();
}
}
return pagina;
}
private static String getStringFromInputStream(InputStream is) {
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
String line;
try {
br = new BufferedReader(new InputStreamReader(is));
while ((line = br.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null) {
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return sb.toString();
}
........
}
This DownloadWebpageTask tries to "download" a webpage into a string, using a webview. This is not the correct way to do it. You are using the wrong tutorial. Don't use AsyncTasks for this. Start all over, using this:
http://developer.android.com/reference/android/webkit/WebView.html
or
http://www.mkyong.com/android/android-webview-example/
Simply call webview.loadUrl(url) again with a different url if you want to load a different page. It's as simple as that.
I've found another solution that works. I added the line
myWebView.setWebViewClient(new WebViewClient());
in the onPostExecute:
protected void onPostExecute(String result) {
setContentView(R.layout.main);
WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new WebViewClient());
myWebView.loadUrl(ATTUALE);
}
Thanks, Frank.
PS I've tried to add a comment to the last Frank's post, but I didn't succeed!