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我試圖從android應用程序的web服務中獲取xml。我正在運行此代碼,但錯誤消息是'應用程序意外停止。請再試一次'。我不確定它是一個應用程序異常,因爲代碼的每一次安寧都在try塊中。什麼是錯誤?Android從aspx web服務中獲取xml
public class AndroidTest extends Activity {
private static final String URL = "http://webservice.url/is/here.aspx";
TextView v;
public void onCreate(Bundle savedInstanceState) {
try {
super.onCreate(savedInstanceState);
v = new TextView(this);
setContentView(v);
new Obtainer().execute();
} catch (Exception ex) {
Toast.makeText(this, ex.toString(), Toast.LENGTH_LONG).show();
}
}
private class Obtainer extends AsyncTask<Void, Void, Void> {
protected Void doInBackground(Void... params) {
BufferedReader in = null;
try {
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet();
request.setURI(new URI(URL));
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
while ((line = in.readLine()) != null) {
sb.append(line + "\n");
}
in.close();
v.setText(sb.toString());
} catch (Exception ex) {
Toast.makeText(getApplicationContext(), ex.toString(), Toast.LENGTH_LONG).show();
}
return null;
}
}
}
編輯:現在拋出儘管這一類(獲取器)的成立是爲了解決它的異常android.os.NetworkOnMainThreadException。
當你看到這樣的錯誤時,你可以檢查logcat以獲取更多信息。你也可以在這裏發佈logcat的異常消息嗎? – spatulamania