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urban-explorer
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Pagination of results.

master
Tomasz Półgrabia 2016-08-27 17:52:38 +02:00
parent fc23e5e30a
commit f46bc4207a
6 changed files with 267 additions and 49 deletions
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10
app/src/main/java/pl/tpolgrabia/urbanexplorer/exceptions/PanoramioResponseNotExpected.java Normal file
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@ -0,0 +1,10 @@
package pl.tpolgrabia.urbanexplorer.exceptions;
/**
* Created by tpolgrabia on 27.08.16.
*/
public class PanoramioResponseNotExpected extends RuntimeException {
public PanoramioResponseNotExpected(String errorCause) {
super(errorCause);
}
}

150
app/src/main/java/pl/tpolgrabia/urbanexplorer/fragments/HomeFragment.java
View File

@ -8,24 +8,23 @@ import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.*;
import com.androidquery.AQuery;
import com.androidquery.callback.AjaxCallback;
import com.androidquery.callback.AjaxStatus;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import pl.tpolgrabia.urbanexplorer.R;
import pl.tpolgrabia.urbanexplorer.dto.PanoramioImageInfo;
import pl.tpolgrabia.urbanexplorer.utils.NumberUtils;
import pl.tpolgrabia.urbanexplorer.utils.PanoramioUtils;
import java.util.ArrayList;
import java.util.List;
import static android.content.Context.LOCATION_SERVICE;
@ -47,6 +46,14 @@ public class HomeFragment extends Fragment implements LocationListener {
private boolean locationServicesActivated = false;
private AQuery aq;
private View inflatedView;
private TextView pageSizeWidget;
private TextView pageIdWidget;
private Long pageId = 1L;
private ListView locations;
private Button prevWidget;
private Button nextWidget;
private Long photosCount;
private TextView locationsResultInfo;
public HomeFragment() {
// Required empty public constructor
@ -108,14 +115,98 @@ public class HomeFragment extends Fragment implements LocationListener {
// }
// );
final ListView locations = (ListView)inflatedView.findViewById(R.id.locations);
locations = (ListView)inflatedView.findViewById(R.id.locations);
inflatedView.findViewById(R.id.update_places).setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
fetchPanoramioLocations();
}
}
);
pageSizeWidget = (TextView) inflatedView.findViewById(R.id.locations_page_size);
pageIdWidget = (TextView) inflatedView.findViewById(R.id.locations_page_id);
pageIdWidget.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
Log.d(CLASS_TAG, "Before text changed");
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
pageId = Math.max(1, NumberUtils.safeParseLong(charSequence));
Log.d(CLASS_TAG, "text changed");
}
@Override
public void afterTextChanged(Editable editable) {
Log.d(CLASS_TAG, "After text changed");
}
});
pageSizeWidget.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
Log.d(CLASS_TAG, "Before text changed");
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
fetchPanoramioLocations();
Log.d(CLASS_TAG, "text changed");
}
@Override
public void afterTextChanged(Editable editable) {
Log.d(CLASS_TAG, "After text changed");
}
});
prevWidget = (Button)inflatedView.findViewById(R.id.prev);
nextWidget = (Button)inflatedView.findViewById(R.id.next);
prevWidget.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (pageId > 1) {
pageId--;
pageIdWidget.setText(Long.toString(pageId));
fetchPanoramioLocations();
}
}
});
nextWidget.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
pageId++;
pageIdWidget.setText(Long.toString(pageId));
fetchPanoramioLocations();
}
});
return inflatedView;
}
private void fetchPanoramioLocations() {
Location location = locationService.getLastKnownLocation(locationProvider);
aq.ajax("http://www.panoramio.com/map/get_panoramas.php?set=public" +
"&from=0&to=20&minx=-180&miny=-90&maxx=180&maxy=90&size=medium&mapfilter=true",
Double radiusX = fetchRadiusX();
Double radiusY = fetchRadiusY();
final String aqQuery = "http://www.panoramio.com/map/get_panoramas.php?" +
"set=public" +
"&from=" + (pageId - 1) * fetchLocationPageSize() +
"&to=" + pageId * fetchLocationPageSize() +
"&minx=" + (location.getLongitude() - radiusX) +
"&miny=" + (location.getLatitude() - radiusY) +
"&maxx=" + (location.getLongitude() + radiusX) +
"&maxy=" + (location.getLatitude() + radiusX) +
"&size=medium" +
"&mapfilter=true";
Log.d(CLASS_TAG, "Query: " + aqQuery);
aq.ajax(aqQuery,
JSONObject.class,
new AjaxCallback<JSONObject>() {
@Override
@ -127,18 +218,16 @@ public class HomeFragment extends Fragment implements LocationListener {
return;
}
JSONArray photos = object.getJSONArray("photos");
List<PanoramioImageInfo> photosInfos = new ArrayList<PanoramioImageInfo>();
int n = photos.length();
for (int i = 0; i < n; i++) {
JSONObject photo = photos.getJSONObject(i);
PanoramioImageInfo info = new PanoramioImageInfo();
info.setPhotoTitle(photo.getString("photo_title"));
info.setPhotoFileUrl(photo.getString("photo_file_url"));
info.setWidth(photo.getDouble("width"));
info.setHeight(photo.getDouble("height"));
photosInfos.add(info);
}
List<PanoramioImageInfo> photosInfos =
PanoramioUtils.fetchPanoramioImagesFromResponse(object);
photosCount = PanoramioUtils.fetchPanoramioImagesCountFromResponse(object);
locationsResultInfo = (TextView)inflatedView.findViewById(R.id.locations_result_info);
Long pageSize = fetchLocationPageSize();
Long start = (pageId - 1) * pageSize + 1;
Long end = pageId * pageSize;
locationsResultInfo.setText("" + start + "-" + end + " from " + photosCount);
ArrayAdapter<PanoramioImageInfo> adapter = new PanoramioAdapter(getActivity(),
R.layout.location_item,
photosInfos);
@ -149,10 +238,23 @@ public class HomeFragment extends Fragment implements LocationListener {
}
});
}
}
);
return inflatedView;
private Long fetchLocationPageSize() {
return NumberUtils.safeParseLong(pageSizeWidget.getText());
}
private Long fetchLocationPageId() {
return Math.max(0L, NumberUtils.safeParseLong(pageIdWidget.getText()));
}
private Double fetchRadiusX() {
final TextView radiusxTextView = (TextView) inflatedView.findViewById(R.id.location_xrange);
return safeParseDouble(radiusxTextView.getText());
}
private Double fetchRadiusY() {
final TextView radiusyTextView = (TextView) inflatedView.findViewById(R.id.location_yrange);
return safeParseDouble(radiusyTextView.getText());
}
@Override

19
app/src/main/java/pl/tpolgrabia/urbanexplorer/utils/NumberUtils.java Normal file
View File

@ -0,0 +1,19 @@
package pl.tpolgrabia.urbanexplorer.utils;
/**
* Created by tpolgrabia on 27.08.16.
*/
public class NumberUtils {
public static Long safeParseLong(CharSequence charSequence) {
if (charSequence == null) {
return 1L;
}
try {
return Long.parseLong(charSequence.toString());
} catch (NumberFormatException e) {
return 1L;
}
}
}

51
app/src/main/java/pl/tpolgrabia/urbanexplorer/utils/PanoramioUtils.java Normal file
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@ -0,0 +1,51 @@
package pl.tpolgrabia.urbanexplorer.utils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import pl.tpolgrabia.urbanexplorer.dto.PanoramioImageInfo;
import pl.tpolgrabia.urbanexplorer.exceptions.PanoramioResponseNotExpected;
import java.util.ArrayList;
import java.util.List;
/**
* Created by tpolgrabia on 27.08.16.
*/
public class PanoramioUtils {
public static PanoramioImageInfo fetchPanoramioDto(JSONObject photo) throws JSONException {
PanoramioImageInfo info = new PanoramioImageInfo();
info.setPhotoTitle(photo.getString("photo_title"));
info.setPhotoFileUrl(photo.getString("photo_file_url"));
info.setWidth(photo.getDouble("width"));
info.setHeight(photo.getDouble("height"));
return info;
}
public static Long fetchPanoramioImagesCountFromResponse(JSONObject object) {
try {
return object.getLong("count");
} catch (JSONException e) {
return null;
}
}
public static List<PanoramioImageInfo> fetchPanoramioImagesFromResponse(JSONObject object) throws JSONException {
JSONArray photos = object.getJSONArray("photos");
if (photos == null) {
throw new PanoramioResponseNotExpected("Panoramio response doesn't contain phots");
}
List<PanoramioImageInfo> photosInfos = new ArrayList<PanoramioImageInfo>();
int n = photos.length();
for (int i = 0; i < n; i++) {
photosInfos.add(
fetchPanoramioDto(
photos.getJSONObject(i)));
}
return photosInfos;
}
}

48
app/src/main/res/layout/fragment_home.xml
View File

@ -16,13 +16,25 @@
android:orientation="horizontal">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Location range"/>
android:text="@string/location_xrange"/>
<EditText android:id="@+id/location_range"
<EditText android:id="@+id/location_xrange"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:layout_weight="1"/>
android:layout_weight="1"
android:text="0.05"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/location_yrange"/>
<EditText android:id="@+id/location_yrange"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:layout_weight="1"
android:text="0.05"/>
</LinearLayout>
@ -34,14 +46,36 @@
</ListView>
<TextView android:id="@+id/locations_result_info"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"/>
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
<Button android:id="@+id/prev"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="Prev"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
<EditText
android:id="@+id/locations_page_id"
android:layout_width="40dp"
android:gravity="center"
android:layout_height="match_parent"
android:text="1"/>
<EditText
android:id="@+id/locations_page_size"
android:layout_width="40dp"
android:gravity="center"
android:layout_height="match_parent"
android:text="10"/>
<Button android:id="@+id/next"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="Next"/>
</LinearLayout>

2
app/src/main/res/values/strings.xml
View File

@ -11,4 +11,6 @@
<string name="login">Login</string>
<string name="location_update_frequency">Location update frequency</string>
<string name="save">Save</string>
<string name="location_yrange">Location y-range</string>
<string name="location_xrange">Location x-range</string>
</resources>