我正在使用 google place api 并想获取最近的餐厅和咖啡馆，但是当我使用进度条获取该数据时出现一个错误
I am using google place api and want to fetch nearest restaurant and cafe but when i fetching that data using progress bar one error occurs
class LoadPlaces extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage(Html.fromHtml("<b>Search</b><br/>Loading Places..."));
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting Places JSON
* */
protected String doInBackground(String... args) {
// creating Places class object
googlePlaces = new GooglePlaces();
try {
// Separeate your place types by PIPE symbol "|"
// If you want all types places make it as null
// Check list of types supported by google
//
String types = "cafe|restaurant"; // Listing places only cafes, restaurants
// Radius in meters - increase this value if you don't find any places
double radius = 1000; // 1000 meters
// get nearest places
nearPlaces = googlePlaces.search(gps.getLatitude(),
gps.getLongitude(), radius, types);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
if(pDialog != null)
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed Places into LISTVIEW
* */
// Get json response status
String status = nearPlaces.status;
// Check for all possible status
if(status.equals("OK")){
// Successfully got places details
if (nearPlaces.results != null) {
// loop through each place
for (Place p : nearPlaces.results) {
HashMap<String, String> map = new HashMap<String, String>();
// Place reference won't display in listview - it will be hidden
// Place reference is used to get "place full details"
map.put(KEY_REFERENCE, p.reference);
// Place name
map.put(KEY_NAME, p.name);
// adding HashMap to ArrayList
placesListItems.add(map);
}
// list adapter
ListAdapter adapter = new SimpleAdapter(MainActivity.this, placesListItems,
R.layout.list_item,
new String[] { KEY_REFERENCE, KEY_NAME}, new int[] {
R.id.reference, R.id.name });
// Adding data into listview
lv.setAdapter(adapter);
}
}
else if(status.equals("ZERO_RESULTS")){
// Zero results found
alert.showAlertDialog(MainActivity.this, "Near Places",
"Sorry no places found. Try to change the types of places",
false);
}
else if(status.equals("UNKNOWN_ERROR"))
{
alert.showAlertDialog(MainActivity.this, "Places Error",
"Sorry unknown error occured.",
false);
}
else if(status.equals("OVER_QUERY_LIMIT"))
{
alert.showAlertDialog(MainActivity.this, "Places Error",
"Sorry query limit to google places is reached",
false);
}
else if(status.equals("REQUEST_DENIED"))
{
alert.showAlertDialog(MainActivity.this, "Places Error",
"Sorry error occured. Request is denied",
false);
}
else if(status.equals("INVALID_REQUEST"))
{
alert.showAlertDialog(MainActivity.this, "Places Error",
"Sorry error occured. Invalid Request",
false);
}
else
{
alert.showAlertDialog(MainActivity.this, "Places Error",
"Sorry error occured.",
false);
}
}
});
}
GooglePlaces 类的搜索方法是
and the search method for GooglePlaces class is
public PlacesList search(double latitude, double longitude, double radius, String types)
throws Exception {
this._latitude = latitude;
this._longitude = longitude;
this._radius = radius;
try {
HttpRequestFactory httpRequestFactory = createRequestFactory(HTTP_TRANSPORT);
HttpRequest request = httpRequestFactory
.buildGetRequest(new GenericUrl(PLACES_SEARCH_URL));
request.getUrl().put("key", API_KEY);
request.getUrl().put("location", _latitude + "," + _longitude);
request.getUrl().put("radius", _radius); // in meters
request.getUrl().put("sensor", "false");
if(types != null)
request.getUrl().put("types", types);
PlacesList list = request.execute().parseAs(PlacesList.class);
// Check log cat for places response status
Log.d("Places Status", "" + list.status);
return list;
} catch (HttpResponseException e) {
Log.e("Error:", e.getMessage());
return null;
}
}
我已经使用了类似的权限
and i have used permission like
但我在 logcat 中遇到错误是
but i am getting error in logcat is
08-14 22:29:59.867: E/AndroidRuntime(331): FATAL EXCEPTION: AsyncTask #1
08-14 22:29:59.867: E/AndroidRuntime(331): java.lang.RuntimeException: An error occured while executing doInBackground()
08-14 22:29:59.867: E/AndroidRuntime(331): at android.os.AsyncTask$3.done(AsyncTask.java:200)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.lang.Thread.run(Thread.java:1096)
08-14 22:29:59.867: E/AndroidRuntime(331): Caused by: java.lang.NoClassDefFoundError: com.google.common.base.Preconditions
08-14 22:29:59.867: E/AndroidRuntime(331): at com.google.api.client.util.ClassInfo.<init>(ClassInfo.java:164)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.google.api.client.util.ClassInfo.of(ClassInfo.java:92)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.google.api.client.util.GenericData.<init>(GenericData.java:79)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.google.api.client.util.GenericData.<init>(GenericData.java:61)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.google.api.client.http.GenericUrl.<init>(GenericUrl.java:97)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.eheuristic.android.googlemap.GooglePlaces.search(GooglePlaces.java:56)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.eheuristic.android.googlemap.MainActivity$LoadPlaces.doInBackground(MainActivity.java:1 85)
08-14 22:29:59.867: E/AndroidRuntime(331): at com.eheuristic.android.googlemap.MainActivity$LoadPlaces.doInBackground(MainActivity.java:1)
08-14 22:29:59.867: E/AndroidRuntime(331): at android.os.AsyncTask$2.call(AsyncTask.java:185)
08-14 22:29:59.867: E/AndroidRuntime(331): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
08-14 22:29:59.867: E/AndroidRuntime(331): ... 4 more
08-14 22:29:59.967: W/IInputConnectionWrapper(331): showStatusIcon on inactive InputConnection
08-14 22:30:02.298: E/WindowManager(331): Activity com.eheuristic.android.googlemap.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44f72ff0 that was originally added here
08-14 22:30:02.298: E/WindowManager(331): android.view.WindowLeaked: Activity com.eheuristic.android.googlemap.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44f72ff0 that was originally added here
08-14 22:30:02.298: E/WindowManager(331): at android.view.ViewRoot.<init>(ViewRoot.java:247)
08-14 22:30:02.298: E/WindowManager(331): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
08-14 22:30:02.298: E/WindowManager(331): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
08-14 22:30:02.298: E/WindowManager(331): at android.view.Window$LocalWindowManager.addView(Window.java:424)
08-14 22:30:02.298: E/WindowManager(331): at android.app.Dialog.show(Dialog.java:241)
08-14 22:30:02.298: E/WindowManager(331): at com.eheuristic.android.googlemap.MainActivity$LoadPlaces.onPreExecute(MainActivity.java:164)
08-14 22:30:02.298: E/WindowManager(331): at android.os.AsyncTask.execute(AsyncTask.java:391)
08-14 22:30:02.298: E/WindowManager(331): at com.eheuristic.android.googlemap.MainActivity.onCreate(MainActivity.java:104)
08-14 22:30:02.298: E/WindowManager(331): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-14 22:30:02.298: E/WindowManager(331): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-14 22:30:02.298: E/WindowManager(331): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-14 22:30:02.298: E/WindowManager(331): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-14 22:30:02.298: E/WindowManager(331): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-14 22:30:02.298: E/WindowManager(331): at android.os.Handler.dispatchMessage(Handler.java:99)
08-14 22:30:02.298: E/WindowManager(331): at android.os.Looper.loop(Looper.java:123)
08-14 22:30:02.298: E/WindowManager(331): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-14 22:30:02.298: E/WindowManager(331): at java.lang.reflect.Method.invokeNative(Native Method)
08-14 22:30:02.298: E/WindowManager(331): at java.lang.reflect.Method.invoke(Method.java:521)
08-14 22:30:02.298: E/WindowManager(331): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-14 22:30:02.298: E/WindowManager(331): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-14 22:30:02.298: E/WindowManager(331): at dalvik.system.NativeStart.main(Native Method)
您正在泄漏对话框.您需要在异步任务的 onPostExecute() 方法中调用 pDialog.dismiss();.你也应该把...
You are leaking the dialog. You need to call pDialog.dismiss(); in the onPostExecute() method of the async task. You should also put...
if(pDialog != null)
pDialog.dismiss();
在主线程活动的 onPause() 方法中.这将确保窗口不会泄漏，即使您的应用程序在执行某些后台执行时丢失了前台.你应该有这样的东西......
in your onPause() method of the activity on the main thread. This will make sure the window is not leaked, even if your application loses the foreground while doing some background execution. You should have something like this...
public class Login extends Activity implements View.OnClickListener{
ProgressDialog pd;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.login);
pd = null;
}
@Override
public void onPause(){
super.onPause();
if(pd != null)
pd.dismiss();
}
public void onClick(View v){
new SendTask().execute("");
}
/*
No networking allowed on the main thread.
*/
private class SendTask extends AsyncTask<String,String,String>{
int result;
@Override
protected void onPreExecute(){
pd = ProgressDialog.show(Login.this,"","Retrieving Inbox...", true,false);
}
@Override
protected String doInBackground(String...strings){
//do networking here
result = account.prepare();
return null;
}
@Override
protected void onPostExecute(String unused){
//check result
pd.dismiss();
Intent intent = new Intent(Login.this,NextActivity.class);
finish();
startActivity(intent);
}
}
}
这篇关于Activity 泄露了最初添加在这里的窗口 com.android.internal.policy.impl.PhoneWindow$DecorView@44f72ff0的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！