Java 意图不起作用。第二个活动启动错误

我正在android studio中构建一个应用程序。在启动主活动时，当我单击以查看列表项的详细信息时，第二个活动不会启动。我已在名为Onlistitemclick的方法中的popuplistfragment.java中编写了意图，并在滑动视图中的oncreate方法中指定了捆绑包。您能提供帮助吗

public class MainActivity extends AppCompatActivity {

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

}
public class PopupListFragment extends ListFragment implements View.OnClickListener {

//String pageData[];
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    ArrayList<String> items = new ArrayList<String>();
    for (int i = 0, z = Cheeses.QUOTES.length ; i < z ; i++) {
        items.add(Cheeses.QUOTES[i]);
    }


    setListAdapter(new PopupAdapter(items));
}


@Override
public void onListItemClick(ListView listView, View v, int position, long   id) {
    String item = (String) listView.getItemAtPosition(position);

    Intent myIntent = new Intent(PopupListFragment.this.getActivity(), SwipeViews.class);
    myIntent.putExtra("key", item);
    startActivity(myIntent);

    // Show a toast if the user clicks on an item
   // Toast.makeText(getActivity(), "Item Clicked: " + item, Toast.LENGTH_SHORT).show();

}

@Override
public void onClick(View v) {

}





/**
 * A simple array adapter that creates a list of cheeses.
 */
class PopupAdapter extends ArrayAdapter<String> {

    PopupAdapter(ArrayList<String> items) {
        super(getActivity(), R.layout.list_item, android.R.id.text1, items);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup     container)     {
        // Let ArrayAdapter inflate the layout and set the text
        View view = super.getView(position, convertView, container);

        return view;
    }
}
}
public class SwipeViews extends Activity {
String pageData[];  //Stores the text to swipe.
LayoutInflater inflater;    //Used to create individual pages
ViewPager vp;   //Reference to class to swipe views

TextView textview;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.swipe_view);
    //Get the data to be swiped through
    Bundle extras = getIntent().getExtras();
    if(extras!=null)
    {
        String item = extras.getString("key");
        textview.setText(item);
    }
    pageData=getResources().getStringArray(R.array.quotes);
    //get an inflater to be used to create single pages
    inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    //Reference ViewPager defined in activity
    vp=(ViewPager)findViewById(R.id.viewPager);
    //set the adapter that will create the individual pages
    vp.setAdapter(new MyPagesAdapter());
}
//Implement PagerAdapter Class to handle individual page creation
class MyPagesAdapter extends PagerAdapter {
    @Override
    public int getCount() {
        //Return total pages, here one for each data item
        return pageData.length;
    }
    //Create the given page (indicated by position)
    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        View page = inflater.inflate(R.layout.page, null);
        ((TextView)page.findViewById(R.id.textMessage)).setText(pageData[position]);
        //Add the page to the front of the queue
        ((ViewPager) container).addView(page, 0);
        return page;
    }
    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
        //See if object from instantiateItem is related to the given view
        //required by API
        return arg0==(View)arg1;
    }
    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        ((ViewPager) container).removeView((View) object);
        object=null;
    }
}

}

public类MainActivity扩展了AppCompatActivity{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
}
}
公共类PopupListFragment扩展ListFragment实现View.OnClickListener{
//字符串pageData[]；
@凌驾
已创建ActivityState上的公共无效（Bundle savedInstanceState）{
super.onActivityCreated（savedInstanceState）；
ArrayList items=新建ArrayList（）；
for（inti=0，z=Cheeses.QUOTES.length；i

这是清单文件

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".SplashScreen"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
     <activity
        android:name=".MainActivity"
        android:label="SuccessQuotes" >
        <intent-filter>
            <action android:name="com.hacktechbd.successquotes.MAINACTIVITY" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".SwipeViews"
        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>

---

确保您能够检测到单击事件。 使用类似

 Log.v("check","item is clicked");

在你的代码里

及 尝试使用

Intent myIntent=newintent（getActivity（），SwipeViews.class）

而不是
Intent myIntent=newintent（PopupListFragment.this.getActivity（），SwipeViews.class）

它可能会工作。
确保您能够检测到单击事件。
使用类似

 Log.v("check","item is clicked");

在你的代码里

及
尝试使用
Intent myIntent=newintent（getActivity（），SwipeViews.class）

而不是
Intent myIntent=newintent（PopupListFragment.this.getActivity（），SwipeViews.class）

它可能会工作。
尝试在MainActivity类中进行导航！也发布错误日志。您的SwipeView类正在扩展活动，而不是AppCompatActivity或FragmentActivity。看看这是否不是问题所在。当我将SwipeView类作为单独的应用程序启动以在MainActivity类中进行导航时，它工作正常！也发布错误日志。您的SwipeView类正在扩展活动，而不是AppCompatActivity或FragmentActivity。看看这是否不是问题所在。我的SwipeView类作为单独的应用程序启动时工作正常