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我正在開發一款應用程序，它使用條形碼在掃描條形碼後獲取物品的產品信息。使用條形碼獲取產品信息如姓名，價格等
我不希望用戶單獨安裝ZXing條形碼應用程序，所以我將ZXing代碼嵌入到我的項目中。所以我能夠獲得條形碼ID號碼。
我想使用谷歌搜索API購物時使用條形碼號碼來獲取名稱，製造商，價格等產品信息。
這裏是我曾經用過
public class JSONExampleActivity extends Activity {
TextView httpStuff;
DefaultHttpClient client;
JSONObject json;
final static String URL = "https://www.googleapis.com/shopping/search";
String upc = "/v1/public/products?country=US&q=691464717759&restrictBy=gtin=691464717759";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
httpStuff = (TextView) findViewById(R.id.tvHttp);
client = new DefaultHttpClient();
new Read().execute("items");
}
public JSONObject products(String upc) throws ClientProtocolException, IOException, JSONException {
StringBuilder url = new StringBuilder(URL);
url.append(upc);
HttpGet get = new HttpGet(url.toString());
HttpResponse r = client.execute(get);
int status = r.getStatusLine().getStatusCode();
if (status == 200) {
HttpEntity e = r.getEntity();
String data = EntityUtils.toString(e);
JSONObject timeline = new JSONObject(data);
return timeline; }
else {
Toast.makeText(JSONExampleActivity.this, "error", Toast.LENGTH_SHORT);
return null; }
}
public class Read extends AsyncTask<String, Integer, String> {
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
try {
json = products(upc);
return json.getString(params[0]);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result){
httpStuff.setText(result); }
}
}
的代碼，但我沒有收到在httpStuff任何文本。
這是logcat的：
D/SntpClient(61): request time failed: java.net.SocketException: Address family not supported by protocol
W/System.err(793): org.apache.http.conn.ConnectTimeoutException: Connect to /209.85.175.95:443 timed out
W/System.err(793): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121)
W/System.err(793): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:143)
W/System.err(793): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
W/System.err(793): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
W/System.err(793): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:359)
W/System.err(793): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
W/System.err(793): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
W/System.err(793): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
W/System.err(793): at com.android.example.jsonexample.JSONExampleActivity.products(JSONExampleActivity.java:53)
W/System.err(793): at com.android.example.jsonexample.JSONExampleActivity$Read.doInBackground(JSONExampleActivity.java:77)
W/System.err(793): at com.android.example.jsonexample.JSONExampleActivity$Read.doInBackground(JSONExampleActivity.java:1)
W/System.err(793): at android.os.AsyncTask$2.call(AsyncTask.java:185)
W/System.err(793): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
W/System.err(793): at java.util.concurrent.FutureTask.run(FutureTask.java:138)
W/System.err(793): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
W/System.err(793): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
W/System.err(793): at java.lang.Thread.run(Thread.java:1019)
D/SntpClient(61): request time failed: java.net.SocketException: Address family not supported by protocol
請幫我看看爲什麼我收到錯誤的原因。
項目的信息你得到這方面的任何解決方案？我必須在我的應用程序中爲我們的客戶實現相同的功能。你可以請我解決方案嗎？ – Noundla 2015-11-27 12:46:13