Android W/系统（16440）：类加载器引用的未知路径：/data/app

我对Android和Eclipse还不太熟悉，我正试图找出我的Android项目可能会出什么问题。两天前，它运行良好，加载到手机上，一切都很愉快。由于我没有做过（afair）除清洁和重建以外的任何事情，我现在收到以下通知：

09-29 11:19:45.148: W/System(16536): ClassLoader referenced unknown path: /data/app/com.example.blephello-2/lib/arm64

这将导致以下错误：

09-29 10:51:35.343: E/AndroidRuntime(15470): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.example.blephello.BlepHello: make sure class name exists, is public, and has an empty constructor that is public
09-29 10:51:35.343: E/AndroidRuntime(15470):    at android.app.Fragment.instantiate(Fragment.java:620)
09-29 10:51:35.343: E/AndroidRuntime(15470):    at android.app.Fragment.instantiate(Fragment.java:584)
09-29 10:51:35.343: E/AndroidRuntime(15470):    at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2192)
09-29 10:51:35.343: E/AndroidRuntime(15470):    at android.app.FragmentController.onCreateView(FragmentController.java:98)
09-29 10:51:35.343: E/AndroidRuntime(15470):    at android.app.Activity.onCreateView(Activity.java:5559)
09-29 10:51:35.343: E/AndroidRuntime(15470):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:754)
09-29 10:51:35.343: E/AndroidRuntime(15470):    ... 21 more
09-29 10:51:35.343: E/AndroidRuntime(15470): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.blephello.BlepHello" on path: DexPathList[[zip file "/data/app/com.example.blephello-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.blephello-2/lib/arm64, /vendor/lib64, /system/lib64]]

为了好玩，我读了很多关于gradle设置的问题，但都还没找到答案。不管怎样，当我看我的课和期望的东西时，例如com.example.blephello.blephello，一切看起来都很好：

package com.example.blephello;

import java.util.ArrayList;
import java.util.UUID;

import processing.core.PApplet;
import processing.core.PFont;
import blepdroid.Blepdroid;
import blepdroid.BlepdroidDevice;


public class BlepHello extends PApplet {

    BlepdroidDevice test;

    PFont fontA;
    ArrayList<String> results;

    boolean allSetUp = false;

    public BlepHello()
    {
    }

但是，当我运行Android Lint时，我看到以下内容：

Class referenced in the manifest, com.example.blephello.FullscreenActivity, was not found in the project or the libraries   AndroidManifest.xml

这让我觉得我的类文件丢失了，我只是不确定它可能是什么。任何关于项目/路径/编译设置的指针都将不胜感激

<activity
            android:name=".FullscreenActivity"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:label="@string/app_name"
            android:theme="@style/FullscreenTheme" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

package com.example.blephello;

import com.example.blephello.util.SystemUiHider;

//import android.R;
import android.annotation.TargetApi;
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.view.MotionEvent;
import android.view.View;

public class FullscreenActivity extends Activity {

Class referenced in the manifest, com.example.blephello.FullscreenActivity, was not found in the project or the libraries   AndroidManifest.xml