您好我开发了一个应用程序，用于将数据从Android发布到网站。现在，当我运行应用程序时，我收到消息不幸的是应用程序停止了然后ap关闭问题是什么。??
如果您有更好的想法或教程用于此目的，请分享
java代码
package com.latlongapp;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.app.Activity;
public class MainActivity extends Activity {
Button sendButton;
EditText msgTextField;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// make message text field object
msgTextField = (EditText) findViewById(R.id.msgTextField);
// make send button object
sendButton = (Button) findViewById(R.id.sendButton);
}
public void send(View v)
{
// get the message from the message text box
String msg = msgTextField.getText().toString();
// make sure the fields are not empty
if (msg.length()>0)
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://http://tayyab001.base.pk/kami.php");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("message", msg));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
httpclient.execute(httppost);
msgTextField.setText(""); // clear text box
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
else
{
// display message if text fields are empty
Toast.makeText(getBaseContext(),"All field are required",Toast.LENGTH_SHORT).show();
}
}
}
XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:text="Message"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<EditText
android:id="@+id/msgTextField"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:text="Send"
android:id="@+id/sendButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="send"
/>
</LinearLayout>
清单
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18" /> <uses-permission android:name="android.permission.INTERNET" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.latlongapp.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> </application> </manifest>
logcat的
07-15 08:14:25.184: D/gralloc_goldfish(1108): Emulator without GPU emulation detected.
07-15 08:14:38.134: D/dalvikvm(1108): GC_FOR_ALLOC freed 162K, 8% free 3119K/3360K, paused 40ms, total 42ms
07-15 08:14:38.274: D/AndroidRuntime(1108): Shutting down VM
07-15 08:14:38.274: W/dalvikvm(1108): threadid=1: thread exiting with uncaught exception (group=0xb3a5ab90)
07-15 08:14:38.304: E/AndroidRuntime(1108): FATAL EXCEPTION: main
07-15 08:14:38.304: E/AndroidRuntime(1108): Process: com.latlongapp, PID: 1108
07-15 08:14:38.304: E/AndroidRuntime(1108): java.lang.IllegalStateException: Could not execute method of the activity
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.view.View$1.onClick(View.java:3814)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.view.View.performClick(View.java:4424)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.view.View$PerformClick.run(View.java:18383)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.os.Handler.handleCallback(Handler.java:733)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.os.Handler.dispatchMessage(Handler.java:95)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.os.Looper.loop(Looper.java:137)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.app.ActivityThread.main(ActivityThread.java:4998)
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.lang.reflect.Method.invokeNative(Native Method)
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.lang.reflect.Method.invoke(Method.java:515)
07-15 08:14:38.304: E/AndroidRuntime(1108): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
07-15 08:14:38.304: E/AndroidRuntime(1108): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
07-15 08:14:38.304: E/AndroidRuntime(1108): at dalvik.system.NativeStart.main(Native Method)
07-15 08:14:38.304: E/AndroidRuntime(1108): Caused by: java.lang.reflect.InvocationTargetException
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.lang.reflect.Method.invokeNative(Native Method)
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.lang.reflect.Method.invoke(Method.java:515)
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.view.View$1.onClick(View.java:3809)
07-15 08:14:38.304: E/AndroidRuntime(1108): ... 11 more
07-15 08:14:38.304: E/AndroidRuntime(1108): Caused by: android.os.NetworkOnMainThreadException
07-15 08:14:38.304: E/AndroidRuntime(1108): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1145)
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
07-15 08:14:38.304: E/AndroidRuntime(1108): at java.net.InetAddress.getAllByName(InetAddress.java:214)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
07-15 08:14:38.304: E/AndroidRuntime(1108): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
07-15 08:14:38.304: E/AndroidRuntime(1108): at com.latlongapp.MainActivity.send(MainActivity.java:54)
07-15 08:14:38.304: E/AndroidRuntime(1108): ... 14 more
07-15 08:14:43.674: I/Process(1108): Sending signal. PID: 1108 SIG: 9
正在使用的PHP SCript是
<?php
// get the "message" variable from the post request
// this is the data coming from the Android app
$message=$_POST["message"];
// specify the file where we will save the contents of the variable message
$filename="androidmessages.html";
// write (append) the data to the file
file_put_contents($filename,$message."<br />",FILE_APPEND);
// load the contents of the file to a variable
$androidmessages=file_get_contents($filename);
// display the contents of the variable (which has the contents of the file)
echo $androidmessages;
?>