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Tôi đã triển khai giao diện người dùng PlacePicker.IntentBuilder vào ứng dụng của mình. Đối với lâu nhất nó đã làm việc với không có vấn đề nhưng bây giờ ngay sau khi giao diện người dùng xuất hiện, nó đóng cửa và im không chắc chắn lý do tại sao. Điều điên rồ là nhìn vào logcat nó không sụp đổ hoặc gây ra bất kỳ trường hợp ngoại lệ vì vậy tôi không biết vấn đề là gì. Đây là lớp tạo và gọi nó.PlacePicker.IntentBuilder đóng ngay lập tức sau khi mở
package com.example.apthagreat.faf;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
import com.google.android.gms.common.GooglePlayServicesRepairableException;
import com.google.android.gms.location.places.Place;
import com.google.android.gms.location.places.ui.PlacePicker;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.LatLngBounds;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
public class DetermineSearchCoordinatesScreen extends ActionBarActivity
{
//Instance Variables
int PLACE_PICKER_REQUEST = 1;
int SELECTED_PLACE_REQUEST = 2;
LatLng southWestBounds;
LatLng northEastBounds;
String zipCodeString;
String zipCodeURL;
String user;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_determine_search_coordinates_screen);
final EditText zipCode = (EditText) findViewById(R.id.enterZip);
final Button findZip = (Button) findViewById(R.id.findZipButton);
user = getIntent().getExtras().getString("username");
//Find button is used when user enters a zip code and not the device's GPS
findZip.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
if (findZip.getText().equals("FIND!"))
{
//build the URL to be passed to determine coordinates for given zip code
zipCodeURL = "http://maps.googleapis.com/maps/api/geocode/json?address=";
zipCodeString = zipCode.getText().toString();
if (zipCodeString.length() == 5)
{
//Fetch to go get GPS coordinates for zip code
zipCodeURL += zipCodeString;
GetZipCoordinates task = new GetZipCoordinates(southWestBounds, northEastBounds);
task.execute(zipCodeURL);
findZip.setText("PUSH TO SEE PLACES");
}
else
{
Toast.makeText(getApplicationContext(), "Must enter a valid 5 digit zip code", Toast.LENGTH_SHORT).show();
}
}
else if (findZip.getText().equals("PUSH TO SEE PLACES"))
{
//AsyncTask was successful in finding coordinates and now we can pass the coordinates in and display places to user
PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();
LatLngBounds llb = new LatLngBounds(southWestBounds, northEastBounds);
builder.setLatLngBounds(llb);
findZip.setText("FIND!");
try
{
startActivityForResult(builder.build(DetermineSearchCoordinatesScreen.this), PLACE_PICKER_REQUEST);
}
catch (GooglePlayServicesRepairableException e)
{
e.printStackTrace();
}
catch (GooglePlayServicesNotAvailableException e)
{
e.printStackTrace();
}
catch(NullPointerException npe)
{
Toast.makeText(getBaseContext(),"Retrieval of coordinates is not yet complete! Try Again.", Toast.LENGTH_LONG).show();
}
}
}
});
//Here we will use the device's GPS coordinates and display nearby places
Button currentSpot = (Button) findViewById(R.id.currentLocationButton);
currentSpot.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();
try
{
startActivityForResult(builder.build(DetermineSearchCoordinatesScreen.this), PLACE_PICKER_REQUEST);
}
catch (GooglePlayServicesRepairableException e)
{
e.printStackTrace();
}
catch (GooglePlayServicesNotAvailableException e)
{
e.printStackTrace();
}
}
});
}
@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_search_category_location_screen, 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
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings)
{
return true;
}
return super.onOptionsItemSelected(item);
}
public void setNorthEastBounds(LatLng northEastBounds)
{
this.northEastBounds = northEastBounds;
}
public void setSouthWestBounds(LatLng southWestBounds)
{
this.southWestBounds = southWestBounds;
}
/*
Once the user selects a place, a dialog will appear prompting the user if they would like
to create an activity at this place
*/
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == PLACE_PICKER_REQUEST)
{
if (resultCode == RESULT_OK)
{
//The place the user selected
final Place place = PlacePicker.getPlace(data, this);
//The dialog that will prompt the user to create an activity when a place is selected
AlertDialog.Builder createActivity = new AlertDialog.Builder(this);
createActivity.setMessage("Would you like to create an activity at this location?");
createActivity.setPositiveButton("YES", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
//Here the user will be directed to the create activity screen and the name and address of selected place will be passed along with it
Intent create = new Intent(getApplicationContext(), CreateActivityScreen.class);
create.putExtra("username", user);
create.putExtra("placeName", place.getName());
create.putExtra("placeAddress", place.getAddress());
startActivityForResult(create, SELECTED_PLACE_REQUEST);
finish();
}
});
createActivity.setNegativeButton("NO", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
//If the user doesn't want to create an activity nothing will happen
}
});
createActivity.show();
}
}
}
/*
The class that is taking the URL and fetching to the internet to find
the GPS coordinates for the user given zip code.
Parses the data into a JSON object and converts it into Latitude and Longitude
coordinates.
The coordinates are given in the form of the Southwest bound coordinates and
Northeast bound coordinates around the zip code.
*/
private class GetZipCoordinates extends AsyncTask<String, Void, String>
{
LatLng sw;
LatLng ne;
public GetZipCoordinates(LatLng sw, LatLng ne)
{
this.sw = sw;
this.ne = ne;
}
@Override
protected String doInBackground(String... placesURL)
{
//fetch places
StringBuilder placesBuilder = new StringBuilder();
//process search parameter string(s)
for (String placeSearchURL : placesURL)
{
//execute search
HttpClient placesClient = new DefaultHttpClient();
try
{
//try to fetch the data
HttpGet placesGet = new HttpGet(placeSearchURL);
HttpResponse placesResponse = placesClient.execute(placesGet);
StatusLine placeSearchStatus = placesResponse.getStatusLine();
//System.err.println(placeSearchStatus);
if (placeSearchStatus.getStatusCode() == 200)
{
//we have an OK response
HttpEntity placesEntity = placesResponse.getEntity();
InputStream placesContent = placesEntity.getContent();
InputStreamReader placesInput = new InputStreamReader(placesContent);
BufferedReader placesReader = new BufferedReader(placesInput);
String lineIn;
while ((lineIn = placesReader.readLine()) != null)
{
placesBuilder.append(lineIn);
}
}
}
catch (Exception e)
{
System.err.println("The website is never executed");
}
}
return placesBuilder.toString();
}
//Take the results from the URL, separate it, and get the Southwest and Northeast bound coordinates
protected void onPostExecute(String result)
{
LatLng SWBounds = null;
LatLng NEBounds = null;
try
{
JSONObject resultObject = new JSONObject(result);
JSONArray placesArray = resultObject.getJSONArray("results");
try
{
JSONObject placeObject = placesArray.getJSONObject(0);
JSONObject southWestLoc = placeObject.getJSONObject("geometry").getJSONObject("bounds").getJSONObject("southwest");
JSONObject northEastLoc = placeObject.getJSONObject("geometry").getJSONObject("bounds").getJSONObject("northeast");
SWBounds = new LatLng(Double.valueOf(southWestLoc.getString("lat")), Double.valueOf(southWestLoc.getString("lng")));
NEBounds = new LatLng(Double.valueOf(northEastLoc.getString("lat")), Double.valueOf(northEastLoc.getString("lng")));
setSouthWestBounds(SWBounds);
setNorthEastBounds(NEBounds);
}
catch (JSONException jse)
{
System.err.println("The bounds were not computed");
}
}
catch (Exception e)
{
System.err.println("The JSON object was never read");
}
}
}
@Override
public void onPause()
{
super.onPause();
//Blank the URL after the Map is displayed
zipCodeURL = null;
}
@Override
public void onResume()
{
super.onResume();
//For safe measures, set to blank when activity reappears
zipCodeURL = "";
}
}
Đây là logcat khi tôi nhận được vào lớp này và nhấn nút gọi các PlacePlace.IntentBuilder
04-16 21:19:24.513 7650-7650/com.example.apthagreat.faf D/Activity﹕ performCreate Call debug elastic valuetrue
04-16 21:19:24.683 7650-7671/com.example.apthagreat.faf D/OpenGLRenderer﹕ endAllStagingAnimators on 0x9d2dd000 (RippleDrawable) with handle 0xb4ad4d60
04-16 21:19:24.703 7650-7650/com.example.apthagreat.faf I/Timeline﹕ Timeline: Activity_idle id: [email protected] time:4496690
04-16 21:19:24.973 7650-7650/com.example.apthagreat.faf V/ActivityThread﹕ updateVisibility : ActivityRecord{26aa4d14 [email protected] {com.example.apthagreat.faf/com.example.apthagreat.faf.ActivityListScreen}} show : false
04-16 21:19:26.633 7650-7650/com.example.apthagreat.faf D/ViewRootImpl﹕ ViewPostImeInputStage ACTION_DOWN
04-16 21:19:26.813 7650-7671/com.example.apthagreat.faf D/OpenGLRenderer﹕ endAllStagingAnimators on 0x9d2e9600 (RippleDrawable) with handle 0x9f64add0
04-16 21:19:27.543 7650-7650/com.example.apthagreat.faf W/IInputConnectionWrapper﹕ showStatusIcon on inactive InputConnection
04-16 21:19:28.143 7650-7650/com.example.apthagreat.faf I/Timeline﹕ Timeline: Activity_idle id: [email protected] time:4500135
Ai đó có thể vui lòng giúp tôi với điều này.
bạn đã thử gỡ lỗi chưa? – Keshav1234
Tôi đã thử gỡ lỗi và logcat nói cùng một thông tin –
Atleast bạn có thể nói trong khi thực hiện ứng dụng phương pháp nào đóng? – Keshav1234