java - 用于来 self 的 Android 应用程序的持久数据的 Azure 移动服务不起作用

Question

我需要帮助，似乎是一个简单的问题，但我坚持了好几天。我正在尝试使用 Azure 移动服务来保存 Android 应用程序中的数据。我现在遇到的问题是，我有一个数据传输对象，其中有几个字段对应于 Azure 数据库表中的列。这是一个简单的表格，遵循所有步骤...我做错了什么？

    package com.bn7.rotabn7;
    import java.net.MalformedURLException;
    import com.microsoft.windowsazure.mobileservices.*;
    import android.os.Bundle;
    import android.app.Activity;
    import android.util.Log;
    import android.view.Menu;

    public class MainActivity extends Activity {
        private MobileServiceClient mClient;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            try {
                 mClient = new MobileServiceClient( 
                        "https://ocamorana.azure-mobile.net/", 
                        "hCzcrsFYhkGmxPvQDNxyqBXjZwjXlK99", 
                        this 
                        );
                Item item = new Item(); 
                item.IdPhone = "Awesome item"; 
                item.DateTimePhone = "Awesome item"; 
                item.LatitudePhone = -43; 
                item.LongetudePhone = -23; 
                item.ActivePhone = false; 
                mClient.getTable(Item.class).insert(item, new TableOperationCallback<Item>() {
                     public void onCompleted(Item entity, Exception exception, ServiceFilterResponse response) { 
                        if (exception == null) { 
                             // Insert succeeded 
                                                } else { 
                             // Insert failed
                            Log.d("Insert failed", "*---------------------------------------------------------------*");
                            Log.d("Insert failed", "Error in activity", exception);  // log the error
                            Log.d("Insert failed", "*---------------------------------------------------------------*");
                        } 
                     } 
                });
            } catch (MalformedURLException e) {
                Log.d("MalformedURLException", e.toString());
            }
    }


        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.activity_main, menu);
            return true;
        }

    }

    package com.bn7.rotabn7;

    public class Item { 
        public int Id; 
        public String IdPhone;
        public String DateTimePhone;
        public double LatitudePhone;
        public double LongetudePhone;
        public boolean ActivePhone;
        }

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.bn7.rotabn7"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="17" />
    <uses-permission android:name="INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.bn7.rotabn7.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>

Error in activity om.microsoft.windowsazure.mobileservices.MobileServiceException: Error while processing request. com.microsoft.windowsazure.mobileservices.MobileServiceConnection$1.onNext(MobileServiceConnection.java:121) com.microsoft.windowsazure.mobileservices.MobileServiceClient$4.handleRequest(MobileServiceClient.java:429) com.microsoft.windowsazure.mobileservices.MobileServiceConnection.start(MobileServiceConnection.java:92) com.microsoft.windowsazure.mobileservices.RequestAsyncTask.doInBackground(RequestAsyncTask.java:77) com.microsoft.windowsazure.mobileservices.RequestAsyncTask.doInBackground(RequestAsyncTask.java:1) android.os.AsyncTask$2.call(AsyncTask.java:185) java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306) java.util.concurrent.FutureTask.run(FutureTask.java:138) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) java.lang.Thread.run(Thread.java:1019) Caused by: java.net.UnknownHostException: ocamorana.azure-mobile.net java.net.InetAddress.lookupHostByName(InetAddress.java:506) java.net.InetAddress.getAllByNameImpl(InetAddress.java:294) java.net.InetAddress.getAllByName(InetAddress.java:256) org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136) org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:359) org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) com.microsoft.windowsazure.mobileservices.ServiceFilterRequestImpl.execute(ServiceFilterRequestImpl.java:73) com.microsoft.windowsazure.mobileservices.MobileServiceConnection$1.onNext(MobileServiceConnection.java:101) ---------------------------------------------------------------

Answer 1

我的第一个猜测是您的 list 中缺少互联网权限(因为它提示 UnknownHost，这通常表明应用程序无法连接到互联网)。确保它在您的 list 中:

<uses-permission android:name="android.permission.INTERNET" />