基本的Android应用程序无法将数据保存到Parse.com

Question

我已经尝试使用简单的快速入门指南提供了很长一段时间来保存Parse，应用程序运行没有任何错误，但数据没有保存到Parse！

MainActivity.java：

    /*
 * Copyright (c) 2015-present, Parse, LLC.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
package com.parse.starter;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;

import com.parse.ParseAnalytics;
import com.parse.ParseObject;


public class MainActivity extends ActionBarActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ParseAnalytics.trackAppOpenedInBackground(getIntent());

    ParseObject testObject = new ParseObject("TestObject");
    testObject.put("foo", "bar");
    testObject.saveInBackground();

  }

  @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);
  }
}

StarterApplication.java：

/*
 * Copyright (c) 2015-present, Parse, LLC.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
package com.parse.starter;

import android.app.Application;

import com.parse.Parse;
import com.parse.ParseACL;
import com.parse.ParseUser;


public class StarterApplication extends Application {

  @Override
  public void onCreate() {
    super.onCreate();

    // Enable Local Datastore.
    Parse.enableLocalDatastore(this);

    // Add your initialization code here
    Parse.initialize(this);

    ParseUser.enableAutomaticUser();
    ParseACL defaultACL = new ParseACL();
    // Optionally enable public read access.
    // defaultACL.setPublicReadAccess(true);
    ParseACL.setDefaultACL(defaultACL, true);
  }
}

的AndroidManifest.xml：

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (c) 2015-present, Parse, LLC.
  ~ All rights reserved.
  ~
  ~ This source code is licensed under the BSD-style license found in the
  ~ LICENSE file in the root directory of this source tree. An additional grant
  ~ of patent rights can be found in the PATENTS file in the same directory.
  -->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.parse.starter" >

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

    <application
        android:name=".StarterApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <meta-data
            android:name="com.parse.APPLICATION_ID"
            android:value="@string/parse_app_id" />
        <meta-data
            android:name="com.parse.CLIENT_KEY"
            android:value="@string/parse_client_key" />

        <activity
            android:name=".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>

谢谢。