Question

我写了一个用于登录Facebook的Android应用程序，但是当我在本地设备上测试时，它会崩溃。这就是当我debug时eclipse告诉我的。我从1天起就来到了这里。而我在Android中是一位业余开发者。我该如何解决？代码：
的 MainActivity.java

package com.cheerz.citizengage;

import com.facebook.AppEventsLogger;

import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends FragmentActivity {

    private MainFragment mainFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if (savedInstanceState == null) {
            // Add the fragment on initial activity setup
            mainFragment = new MainFragment();
            getSupportFragmentManager()
            .beginTransaction()
            .add(android.R.id.content, mainFragment)
            .commit();
        } else {
            // Or set the fragment from restored state info
            mainFragment = (MainFragment) getSupportFragmentManager()
            .findFragmentById(android.R.id.content);
        }
    }

    @Override
    protected void onResume() {
      super.onResume();

      // Logs 'install' and 'app activate' App Events.
      AppEventsLogger.activateApp(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.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();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onPause() {
      super.onPause();

      // Logs 'app deactivate' App Event.
      AppEventsLogger.deactivateApp(this);
    }
}

MainFragment.java

package com.cheerz.citizengage;

import java.util.Arrays;

import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.widget.LoginButton;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class MainFragment extends Fragment{

    private static final String TAG = "MainFragment";
    private UiLifecycleHelper uiHelper;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.activity_main, container, false);

        uiHelper = new UiLifecycleHelper(getActivity(), callback);
        uiHelper.onCreate(savedInstanceState);

        LoginButton authButton = (LoginButton) view.findViewById(R.id.authButton);
        authButton.setFragment(this);
        authButton.setReadPermissions(Arrays.asList("user_likes", "user_status"));

        return view;
    }

    private void onSessionStateChange(Session session, SessionState state, Exception exception) {
        if (state.isOpened()) {
            Log.i(TAG, "Logged in...");
        } else if (state.isClosed()) {
            Log.i(TAG, "Logged out...");
        }
    }

    private Session.StatusCallback callback = new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state, Exception exception) {
            onSessionStateChange(session, state, exception);
        }
    };

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

        Session session = Session.getActiveSession();
        if (session != null &&
               (session.isOpened() || session.isClosed()) ) {
            onSessionStateChange(session, session.getState(), null);
        }

        uiHelper.onResume();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        uiHelper.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onPause() {
        super.onPause();
        uiHelper.onPause();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        uiHelper.onDestroy();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        uiHelper.onSaveInstanceState(outState);
    }

}

activity_main.xml

<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.cheerz.citizengage.MainActivity" >

    <com.facebook.widget.LoginButton
        android:id="@+id/authButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="30dp"
        />

</LinearLayout>

Error:

[2015-01-10 09:49:27 - ddmlib] An established connection was aborted by the software in your host machine
java.io.IOException: An established connection was aborted by the software in your host machine
    at sun.nio.ch.SocketDispatcher.write0(Native Method)
    at sun.nio.ch.SocketDispatcher.write(Unknown Source)
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(Unknown Source)
    at sun.nio.ch.IOUtil.write(Unknown Source)
    at sun.nio.ch.SocketChannelImpl.write(Unknown Source)
    at com.android.ddmlib.JdwpPacket.writeAndConsume(JdwpPacket.java:213)
    at com.android.ddmlib.Client.sendAndConsume(Client.java:675)
    at com.android.ddmlib.HandleHeap.sendREAQ(HandleHeap.java:342)
    at com.android.ddmlib.Client.requestAllocationStatus(Client.java:521)
    at com.android.ddmlib.DeviceMonitor.createClient(DeviceMonitor.java:831)
    at com.android.ddmlib.DeviceMonitor.openClient(DeviceMonitor.java:799)
    at com.android.ddmlib.DeviceMonitor.processIncomingJdwpData(DeviceMonitor.java:759)
    at com.android.ddmlib.DeviceMonitor.deviceClientMonitorLoop(DeviceMonitor.java:648)
    at com.android.ddmlib.DeviceMonitor.access$100(DeviceMonitor.java:44)
    at com.android.ddmlib.DeviceMonitor$3.run(DeviceMonitor.java:576)

Answer 1

通过重新启动Eclipse可以简单地解决问题。 Eclipse有时无法与模拟器建立连接，因此可能就是这种情况。

Android应用程序中的调试错误

1 个答案: