相关疑难解决方法(0)

我被困在这里,从片段中的Button开始活动时出现问题.这是我的代码:

ViewPagerAdapter.java

import java.util.List;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class ViewPagerAdapter extends FragmentPagerAdapter {

    private List<Fragment> fragments;

    public ViewPagerAdapter(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        this.fragments = fragments;
    }

    @Override
    public int getCount() {
        return this.fragments.size();
    }

    @Override
    public Fragment getItem(int position) {
        return this.fragments.get(position);
    }

}

ViewPagerActivity.java

import java.util.List;
import java.util.Vector;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.util.Log;
import com.package.here.Class1Overview;
import com.package.here.Class1Overview;
import com.package.here.Class1Overview;

public class ViewPagerActivity extends FragmentActivity{

    @Override
    protected void onCreate(Bundle savedInstanceState) { …