我有一些Android代码，我希望从网页中提取数据并将其显示为文本。不幸的是，我收到了这个错误，即使它有适当的权限和所有内容：
java.net.UnknownHostException：无法解析主机＆＃34; ephemeraltech.com＆＃34;：没有与主机名关联的地址
这是我的清单文件权限：
<uses-feature android:name="android.hardware.type.watch" />
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
以下是代码本身：
public class MyActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.round_activity_my);
TextView mTextView = (TextView)findViewById(R.id.text);
myAsyncTask mTask = new myAsyncTask();
mTask.execute("http://ephemeraltech.com/demo/android_tutorial20.php");
/* final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() {
@Override
public void onLayoutInflated(WatchViewStub stub) {
mTextView = (TextView) stub.findViewById(R.id.text);
}
}); */
}
private class myAsyncTask extends AsyncTask<String,Void,Void> {
public String resultText;
@Override
protected void onPreExecute() {
}
@Override
protected Void doInBackground(String... str) {
try {
System.out.println("testing");
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://ephemeraltech.com/demo/android_tutorial20.php");
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
InputStream webs = entity.getContent();
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(webs,"iso-8859-1"),8);
resultText = reader.readLine();
webs.close();
System.out.println("testing II");
} catch(Exception e){
resultText = "hi";
}
} catch (Exception e) {
System.out.println(e.toString());
}
return null;
}
}
protected void onPostExecute(String resultText) {
TextView mTextView = (TextView)findViewById(R.id.text);
mTextView.setText("sdfdfdfdf");
System.out.println("Testing III");
}
}
我不知道为什么会得到它。有人有任何想法吗？
编辑：它是Android Wear模拟器，与配有Wifi的手机配对，因此我不知道为什么它无法上网。