相关疑难解决方法(0)

我收到了这个错误.它说ClassLoader referenced unknown path ,我不知道该怎么办？谁能解决我的问题？

03-11 01:35:46.231 3040-3040/com.pptsindia.feedapp I/art: Not late-enabling -Xcheck:jni (already on)
03-11 01:35:46.418 3040-3040/com.pptsindia.feedapp W/System: ClassLoader referenced unknown path: /data/app/com.pptsindia.feedapp-1/lib/x86
03-11 01:35:46.884 3040-3040/com.pptsindia.feedapp D/AndroidRuntime: Shutting down VM
03-11 01:35:46.886 3040-3040/com.pptsindia.feedapp E/AndroidRuntime: FATAL EXCEPTION: main
                                                                     Process: com.pptsindia.feedapp, PID: 3040
                                                                     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pptsindia.feedapp/com.pptsindia.feedapp.MainActivity}: android.view.InflateException: Binary XML file line #14: Binary XML file line #14: Error inflating class at.markushi.ui.CircleButton
           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
           at android.app.ActivityThread.-wrap11(ActivityThread.java)
           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
           at android.os.Handler.dispatchMessage(Handler.java:102)
           at android.os.Looper.loop(Looper.java:148)
           at android.app.ActivityThread.main(ActivityThread.java:5417)
           at java.lang.reflect.Method.invoke(Native Method) …

我试图在片段中使用Youtube播放器支持片段,但应用程序总是崩溃(NullPointerException),我无法找到任何类似的帖子来修复它.

我有导入导入android.support.v4.app.Fragment所以不应该是问题.

这是我的片段类的样子:

package com.example.activitydetector;
import com.google.android.youtube.player.YouTubeBaseActivity;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayer.OnInitializedListener;
import com.google.android.youtube.player.YouTubePlayer.Provider;
import com.google.android.youtube.player.YouTubePlayerFragment;
import com.google.android.youtube.player.YouTubePlayerSupportFragment;
import com.google.android.youtube.player.YouTubePlayerView;
import systemManager.SystemManager;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
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.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;

public class GuidelinesFragment extends YouTubePlayerSupportFragment {

    SystemManager sm;
    YouTubePlayerView youTubeView; 
    String URL_VIDEO = "CaA-k1l0xa4";
    String KEY_DEVELOPER = "AIzaSyBIIs0u0NXhsZguv8nCNvSzUmflTt7K1Ek";

    public GuidelinesFragment() {
        super();
        // TODO Auto-generated constructor stub
    }

    public void onCreate(Bundle savedInstanceState) { …