我正在学习视频教程，而且我完成了与视频完全相同的东西，唯一的区别在于他们在Eclipse上做的视频和我在Android Studio上做的事情（我想它不应该影响结果）。无论如何，我想要做的是从Apple RSS获取原始XML数据到我的Android应用程序并将其显示在文本字段中......
我已添加：
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
到清单文件
XML CODE：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<TextView android:text="@string/hello_world" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView1" />
</RelativeLayout>
主要活动代码：
package com.example.haziqsheikhlocal.top10appsofios;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class MainActivity extends ActionBarActivity {
TextView text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text =(TextView) findViewById(R.id.textView1);
new DownloadData().execute("http://ax.itunes.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/topfreeapplications/limit=10/xml");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class DownloadData extends AsyncTask<String, Void, String>{
String myXmlData; // This String Will Contain Our XML Data
protected String doInBackground(String... urls) { // It Finds The First Url In BackGround;
try{
myXmlData = downloadXML(urls[0]); // It Downloads the first element in array Element;
}
catch (IOException e){
e.printStackTrace();
return "" ;
}
return null;
}
protected void onPostExecution(String result){
Log.d("OnPostExecute", myXmlData);
text.setText(myXmlData);
}
private String downloadXML (String theUrl) throws IOException {
int BUFFER_SIZE = 2000; // Buffer Size Constant
InputStream is = null; // Declaring Input Stream
String xmlContent = ""; // Creating empty xmlContent variable to store xml data from the web in furutre
try {
URL url = new URL(theUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // Open The Connection with url given
conn.setReadTimeout(10000);// Read time Out 10seconds
conn.setConnectTimeout(15000);// connection timeout 15 s
conn.setRequestMethod("GET"); // Set the method for the URL request, one of: GET POST HEAD OPTIONS PUT DELETE TRACE are legal, subject to protocol restrictions.
conn.setDoInput(true);
int response = conn.getResponseCode();
Log.d("DownloadXML", "The Ressponse Code Is: " + response);
is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
int charRead;
char[] inputBuffer = new char[BUFFER_SIZE];
try {
while ((charRead = isr.read(inputBuffer)) > 0){
String readString = String.copyValueOf(inputBuffer, 0 , charRead);
xmlContent += readString;
inputBuffer = new char[BUFFER_SIZE];
}
return xmlContent;
}
catch (IOException e){
e.printStackTrace();
return null;
}
}finally {
if(is != null) {
is.close();
}
}
}
}
}
设备LogCat显示没有错误＆amp;显示响应代码200。 设备LogCat：
03-25 22:53:09.237 1144-1144/com.example.haziqsheikhlocal.top10appsofios I/art﹕ Not late-enabling -Xcheck:jni (already on)
03-25 22:53:12.688 1144-1162/com.example.haziqsheikhlocal.top10appsofios D/OpenGLRenderer﹕ Render dirty regions requested: true
03-25 22:53:12.718 1144-1144/com.example.haziqsheikhlocal.top10appsofios D/﹕ HostConnection::get() New Host Connection established 0xa7b419c0, tid 1144
03-25 22:53:12.771 1144-1144/com.example.haziqsheikhlocal.top10appsofios D/Atlas﹕ Validating map...
03-25 22:53:13.058 1144-1162/com.example.haziqsheikhlocal.top10appsofios D/﹕ HostConnection::get() New Host Connection established 0xa7b41bf0, tid 1162
03-25 22:53:13.122 1144-1162/com.example.haziqsheikhlocal.top10appsofios I/OpenGLRenderer﹕ Initialized EGL, version 1.4
03-25 22:53:13.194 1144-1162/com.example.haziqsheikhlocal.top10appsofios D/OpenGLRenderer﹕ Enabling debug mode 0
03-25 22:53:13.256 1144-1162/com.example.haziqsheikhlocal.top10appsofios W/EGL_emulation﹕ eglSurfaceAttrib not implemented
03-25 22:53:13.256 1144-1162/com.example.haziqsheikhlocal.top10appsofios W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa7b3ba40, error=EGL_SUCCESS
03-25 22:53:14.100 1144-1156/com.example.haziqsheikhlocal.top10appsofios I/art﹕ Background sticky concurrent mark sweep GC freed 3424(291KB) AllocSpace objects, 0(0B) LOS objects, 14% free, 968KB/1135KB, paused 1.420ms total 737.728ms
03-25 22:53:15.313 1144-1161/com.example.haziqsheikhlocal.top10appsofios D/DownloadXML﹕ The Ressponse Code Is: 200
ADB LogCat显示此错误：
DeviceMonitor: Adb connection Error:An existing connection was forcibly closed by the remote host
ddms: null
java.nio.BufferOverflowException
at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:206)
at com.android.ddmlib.JdwpPacket.movePacket(JdwpPacket.java:235)
at com.android.ddmlib.Debugger.sendAndConsume(Debugger.java:347)
at com.android.ddmlib.Client.forwardPacketToDebugger(Client.java:698)
at com.android.ddmlib.MonitorThread.processClientActivity(MonitorThread.java:344)
at com.android.ddmlib.MonitorThread.run(MonitorThread.java:263)
ddms: Client data packet exceeded maximum buffer size [Client pid: 1272]
DeviceMonitor: Adb rejected connection to client '1537': closed
DeviceMonitor: Adb connection Error:An existing connection was forcibly closed by the remote host
DeviceMonitor: Connection attempts: 1
DeviceMonitor: Connection attempts: 2
DeviceMonitor: Connection attempts: 3
DeviceMonitor: Connection attempts: 4
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
PropertyFetcher: AdbCommandRejectedException getting properties for device emulator-5554: device offline
我要解决的问题是我去了终端并使用adb kill-server然后使用adb start-server。我再次运行模拟器，但仍然没有运气！
请帮帮我 。
注意：当我使用gennymotion并且我能够使用模拟器浏览器和冲浪网站时，也会发生同样的事情。