【发布时间】：2015-07-13 15:59:54
【问题描述】：
我是 Android 应用开发的新手。 我跟着this toturial 写了一个简单的Google Places 自动完成Android 应用程序，但是当我开始输入应用程序时它没有返回任何建议；当我在自动完成文本视图中编写任何内容时，它会在 LogCat 中出现 NativeCrypto 错误。这是我的代码：
package com.example.newxyz;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.Toast;
public class GooglePlacesAutocompleteActivity extends Activity implements OnItemClickListener {
private static final String LOG_TAG = "Google Places Autocomplete";
private static final String PLACES_API_BASE = "https://maps.googleapis.com/maps/api/place";
private static final String TYPE_AUTOCOMPLETE = "/autocomplete";
private static final String OUT_JSON = "/json";
private static final String API_KEY = "AIzaSyAujQlZ1Jj64NAHMoynXjI253MVRzGW09w";
private static final String True = "true";
private static final String language = "en";
AutoCompleteTextView autoCompView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
autoCompView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
autoCompView.setAdapter(new GooglePlacesAutocompleteAdapter(this, R.layout.list_item));
autoCompView.setOnItemClickListener(this);
}
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
String str = (String) adapterView.getItemAtPosition(position);
Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
}
public static ArrayList<String> autocomplete(String input) {
ArrayList<String> resultList = null;
HttpURLConnection conn = null;
StringBuilder jsonResults = new StringBuilder();
try {
StringBuilder sb = new StringBuilder(PLACES_API_BASE + TYPE_AUTOCOMPLETE + OUT_JSON);
sb.append("?sensor=" + True);
sb.append("&key=" + API_KEY);
sb.append("&language" + language);
//sb.append("&components=country:gr");
sb.append("&input=" + URLEncoder.encode(input, "utf8"));
URL url = new URL(sb.toString());
conn = (HttpURLConnection) url.openConnection();
InputStreamReader in = new InputStreamReader(conn.getInputStream());
// Load the results into a StringBuilder
int read;
char[] buff = new char[1024];
while ((read = in.read(buff)) != -1) {
jsonResults.append(buff, 0, read);
}
} catch (MalformedURLException e) {
Log.e(LOG_TAG, "Error processing Places API URL", e);
return resultList;
} catch (IOException e) {
Log.e(LOG_TAG, "Error connecting to Places API", e);
return resultList;
} finally {
if (conn != null) {
conn.disconnect();
}
}
try {
// Create a JSON object hierarchy from the results
JSONObject jsonObj = new JSONObject(jsonResults.toString());
JSONArray predsJsonArray = jsonObj.getJSONArray("predictions");
// Extract the Place descriptions from the results
resultList = new ArrayList<String>(predsJsonArray.length());
for (int i = 0; i < predsJsonArray.length(); i++) {
System.out.println(predsJsonArray.getJSONObject(i).getString("description"));
System.out.println("============================================================");
resultList.add(predsJsonArray.getJSONObject(i).getString("description"));
}
} catch (JSONException e) {
Log.e(LOG_TAG, "Cannot process JSON results", e);
}
return resultList;
}
class GooglePlacesAutocompleteAdapter extends ArrayAdapter<String> implements Filterable {
private ArrayList<String> resultList;
public GooglePlacesAutocompleteAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
}
@Override
public int getCount() {
return resultList.size();
}
@Override
public String getItem(int index) {
return resultList.get(index);
}
@Override
public Filter getFilter() {
Filter filter = new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults filterResults = new FilterResults();
if (constraint != null) {
// Retrieve the autocomplete results.
resultList = autocomplete(constraint.toString());
// Assign the data to the FilterResults
filterResults.values = resultList;
filterResults.count = resultList.size();
}
return filterResults;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results != null && results.count > 0) {
notifyDataSetChanged();
} else {
notifyDataSetInvalidated();
}
}
};
return filter;
}
}
}
这是我的 LogCat 错误：
05-04 13:16:27.705: E/NativeCrypto(9312): ssl=0x611c0a20 cert_verify_callback x509_store_ctx=0x62625940 arg=0x0
05-04 13:16:27.705: E/NativeCrypto(9312): ssl=0x611c0a20 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_RSA
- 我已在 console.developers.google.com 中启用了适用于 Android 的 Google Places API
- 我正在为我的应用程序使用浏览器键
- 我已寻找问题的答案，但尚未找到任何相关答案
- 我已在 Menifest 文件中授予 Internet 权限
- 在开发者控制台概览中，图表显示请求，这意味着已发出请求但没有响应。
任何帮助将不胜感激。 谢谢
【问题讨论】：
-
“它在 LogCat 中给出 NativeCrypto 错误”？然后请发布 dat logcat（记录器实际上有助于调试）...
-
请查看已编辑的帖子
-
可能值得看看支持自动完成功能的新 Places API for Android (developers.google.com/places/android)。
-
@plexer 我重新检查并按照您提供的链接中的每个步骤进行操作...错误仍然存在
-
您提到您正在使用浏览器键。您是否将其更改为 Android 密钥？
标签： android api autocomplete google-places-api