我正在制作一个 Android 应用程序，它现在应该连接到以前制作的 localhost Web 服务。事情进展不顺利。我有以下代码：
公共无效探针（）{
String soapMsg="<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" +
"<soap:Body>"+
"<SelectVezba xmlns=\"http://tempuri.org/\">"+
"<ime>" + "a" + "</ime>" +
"</SelectVezba>" +
"</soap:Body>" +
"</soap:Envelope>";
Log.d("where", "before all others");
TextView t = (TextView)findViewById(R.id.textView2);
HttpParams httpParameters = new BasicHttpParams();
// Set the timeout in milliseconds until a connection is established.
int timeoutConnection = 15000;
HttpConnectionParams.setConnectionTimeout(httpParameters,timeoutConnection);
// Set the default socket timeout (SO_TIMEOUT)
// in milliseconds which is the timeout for waiting for data.
int timeoutSocket = 35000;
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
DefaultHttpClient httpclient = new DefaultHttpClient(httpParameters);
HttpPost httppost = new HttpPost(Constants.SERVICE_LOCATION);
httppost.setHeader("Content-Type", Constants.CONTENT_TYPE);
httppost.setHeader("SOAPAction", Constants.GET_SelectVezba);
Log.d("where","before try");
HttpEntity entity;
try {
entity = new StringEntity(soapMsg, HTTP.UTF_8);
httppost.setEntity(entity);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
Log.d("where", "in catch 1");
e.printStackTrace();
}
HttpResponse response;
try {
Log.d("where", "in catch 0");
response = httpclient.execute(httppost);
Log.d("where","1");
if(response == null)
{
Log.d("tag","response e null");
}
HttpEntity r_entity = response.getEntity(); // get response
Header[] headers = response.getAllHeaders();
if (r_entity != null)
{
String str_entity = EntityUtils.toString(r_entity);
Log.d("response",str_entity);
}
} catch (ClientProtocolException e) {
Log.d("where", "in catch 2");
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
Log.d("where", "in catch 3");
e.printStackTrace();
}// calling server
//parsing irrelevant to the question
ParserSAXLista parser=new ParserSAXLista("nov.xml");
ListView listview1 = (ListView)findViewById(R.id.listView1);
ArrayList<Entitet> nova=parser.objekti();
ArrayList<String> lista=new ArrayList<String>();
for (Entitet en : nova) {
lista.add(en.toString());
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, lista);
listview1.setAdapter(adapter);
}
使用的常量定义如下：
public final static String SERVICE_LOCATION = "http://10.0.2.2:63919/Servis.asmx";
public final static String CONTENT_TYPE = "text/xml; charset=utf-8";
public final static String GET_SelectVezba = "http://tempuri.org/SelectVezba";
在我的 LogCat 中，我得到一个“in catch 0”和一个“in catch 3”，它告诉我有一个异常来自该行：
response = httpclient.execute(httppost);
我该如何解决？我在其他地方读到我应该在清单中添加 Internet 权限，但是在写入时：
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
在清单中，程序立即开始崩溃。
任何帮助，将不胜感激。抱歉，问题中有这么长的代码。
- 编辑
日志猫：
07-11 09:10:54.224: D/AndroidRuntime(1355): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
07-11 09:10:54.224: D/AndroidRuntime(1355): CheckJNI is ON
07-11 09:10:54.344: D/dalvikvm(1355): Trying to load lib libjavacore.so 0x0
07-11 09:10:54.354: D/dalvikvm(1355): Added shared lib libjavacore.so 0x0
07-11 09:10:54.394: D/dalvikvm(1355): Trying to load lib libnativehelper.so 0x0
07-11 09:10:54.394: D/dalvikvm(1355): Added shared lib libnativehelper.so 0x0
07-11 09:10:55.244: D/AndroidRuntime(1355): Calling main entry com.android.commands.pm.Pm
07-11 09:10:55.285: D/AndroidRuntime(1355): Shutting down VM
07-11 09:10:55.304: D/dalvikvm(1355): GC_CONCURRENT freed 100K, 19% free 470K/576K, paused 1ms+5ms, total 16ms
07-11 09:10:55.304: D/dalvikvm(1355): Debugger has detached; object registry had 1 entries
07-11 09:10:56.984: D/AndroidRuntime(1368): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
07-11 09:10:56.984: D/AndroidRuntime(1368): CheckJNI is ON
07-11 09:10:57.329: D/dalvikvm(1368): Trying to load lib libjavacore.so 0x0
07-11 09:10:57.354: D/dalvikvm(1368): Added shared lib libjavacore.so 0x0
07-11 09:10:57.474: D/dalvikvm(1368): Trying to load lib libnativehelper.so 0x0
07-11 09:10:57.474: D/dalvikvm(1368): Added shared lib libnativehelper.so 0x0
07-11 09:10:58.914: D/AndroidRuntime(1368): Calling main entry com.android.commands.am.Am
07-11 09:10:58.924: D/dalvikvm(1368): Note: class Landroid/app/ActivityManagerNative; has 156 unimplemented (abstract) methods
07-11 09:10:58.964: I/ActivityManager(269): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.anotherstart/.MainActivity} from pid 1368
07-11 09:10:58.994: W/WindowManager(269): Failure taking screenshot for (328x583) to layer 21010
07-11 09:10:59.054: D/AndroidRuntime(1368): Shutting down VM
07-11 09:10:59.084: D/dalvikvm(1368): GC_CONCURRENT freed 101K, 17% free 501K/604K, paused 1ms+1ms, total 29ms
07-11 09:10:59.104: D/jdwp(1368): Got wake-up signal, bailing out of select
07-11 09:10:59.104: D/dalvikvm(1368): Debugger has detached; object registry had 1 entries
07-11 09:10:59.234: D/dalvikvm(1380): Not late-enabling CheckJNI (already on)
07-11 09:10:59.244: I/ActivityManager(269): Start proc com.example.anotherstart for activity com.example.anotherstart/.MainActivity: pid=1380 uid=10048 gids={50048, 3003, 1028}
07-11 09:10:59.644: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property
07-11 09:10:59.994: E/Trace(1380): error opening trace file: No such file or directory (2)
07-11 09:11:02.296: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property
07-11 09:11:02.684: D/gralloc_goldfish(1380): Emulator without GPU emulation detected.
07-11 09:11:03.244: I/ActivityManager(269): Displayed com.example.anotherstart/.MainActivity: +4s57ms (total +13m39s598ms)
07-11 09:11:11.134: I/ActivityManager(269): START u0 {cmp=com.example.anotherstart/.AddHrana} from pid 1380
07-11 09:11:11.134: W/WindowManager(269): Failure taking screenshot for (328x583) to layer 21015
07-11 09:11:11.654: D/kade(1380): pred site drugi
07-11 09:11:11.654: D/kaj sum(1380): pred try
07-11 09:11:11.674: D/kade(1380): vo catch 0
07-11 09:11:11.844: D/AndroidRuntime(1380): Shutting down VM
07-11 09:11:11.864: W/dalvikvm(1380): threadid=1: thread exiting with uncaught exception (group=0x2bd39930)
07-11 09:11:11.934: E/AndroidRuntime(1380): FATAL EXCEPTION: main
07-11 09:11:11.934: E/AndroidRuntime(1380): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.anotherstart/com.example.anotherstart.AddHrana}: android.os.NetworkOnMainThreadException
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.os.Handler.dispatchMessage(Handler.java:99)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.os.Looper.loop(Looper.java:137)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.ActivityThread.main(ActivityThread.java:5039)
07-11 09:11:11.934: E/AndroidRuntime(1380): at java.lang.reflect.Method.invokeNative(Native Method)
07-11 09:11:11.934: E/AndroidRuntime(1380): at java.lang.reflect.Method.invoke(Method.java:511)
07-11 09:11:11.934: E/AndroidRuntime(1380): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-11 09:11:11.934: E/AndroidRuntime(1380): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-11 09:11:11.934: E/AndroidRuntime(1380): at dalvik.system.NativeStart.main(Native Method)
07-11 09:11:11.934: E/AndroidRuntime(1380): Caused by: android.os.NetworkOnMainThreadException
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
07-11 09:11:11.934: E/AndroidRuntime(1380): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
07-11 09:11:11.934: E/AndroidRuntime(1380): at libcore.io.IoBridge.connectErrno(IoBridge.java:144)
07-11 09:11:11.934: E/AndroidRuntime(1380): at libcore.io.IoBridge.connect(IoBridge.java:112)
07-11 09:11:11.934: E/AndroidRuntime(1380): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
07-11 09:11:11.934: E/AndroidRuntime(1380): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
07-11 09:11:11.934: E/AndroidRuntime(1380): at java.net.Socket.connect(Socket.java:842)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
07-11 09:11:11.934: E/AndroidRuntime(1380): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
07-11 09:11:11.934: E/AndroidRuntime(1380): at com.example.anotherstart.AddHrana.proben(AddHrana.java:92)
07-11 09:11:11.934: E/AndroidRuntime(1380): at com.example.anotherstart.AddHrana.onCreate(AddHrana.java:144)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.Activity.performCreate(Activity.java:5104)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
07-11 09:11:11.934: E/AndroidRuntime(1380): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
07-11 09:11:11.934: E/AndroidRuntime(1380): ... 11 more
07-11 09:11:12.034: D/dalvikvm(1380): GC_CONCURRENT freed 198K, 3% free 9137K/9380K, paused 75ms+16ms, total 321ms
07-11 09:11:12.034: D/dalvikvm(1380): WAIT_FOR_CONCURRENT_GC blocked 60ms
07-11 09:11:12.064: W/ActivityManager(269): Force finishing activity com.example.anotherstart/.AddHrana
07-11 09:11:12.084: W/ActivityManager(269): Force finishing activity com.example.anotherstart/.MainActivity
07-11 09:11:12.494: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property
07-11 09:11:12.594: W/ActivityManager(269): Activity pause timeout for ActivityRecord{2cae4aa0 u0 com.example.anotherstart/.AddHrana}
07-11 09:11:13.184: I/Choreographer(269): Skipped 45 frames! The application may be doing too much work on its main thread.
07-11 09:11:13.274: I/MIPSAssembler(36): generated scanline__00000077:03515104_00008001_00000000 [206 ipp] (245 ins) at [0x2d401970:0x2d401d44] in 0 ns
07-11 09:11:13.484: I/Choreographer(1145): Skipped 63 frames! The application may be doing too much work on its main thread.
07-11 09:11:13.794: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property
07-11 09:11:14.431: I/Choreographer(1145): Skipped 97 frames! The application may be doing too much work on its main thread.
07-11 09:11:26.971: W/ActivityManager(269): Activity destroy timeout for ActivityRecord{2cb65278 u0 com.example.anotherstart/.MainActivity}
07-11 09:11:26.971: W/ActivityManager(269): Activity destroy timeout for ActivityRecord{2cae4aa0 u0 com.example.anotherstart/.AddHrana}
显现：
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.anotherstart.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.anotherstart.Pregled"
android:label="@string/title_activity_pregled" >
</activity>
<activity
android:name="com.example.anotherstart.AddHrana"
android:label="@string/title_activity_add_hrana" >
</activity>
<activity
android:name="com.example.anotherstart.AddVezba"
android:label="@string/title_activity_add_vezba" >
</activity>
</application>