程序按Home键出问题，求帮忙解答

Aeron_YES 2014-10-30 04:41:50

viewpager中有三个Fragment ，错误信息如下 Activity与一个fragment的代码如下，求帮忙解答

MainActivity代码如下

package com.aeron.mangaapp;



import java.util.ArrayList;



import com.aeron.fragments.AboutFragment;

import com.aeron.fragments.HomeFragment;

import com.aeron.fragments.HotFragment;

import com.aeron.myviewpager.MyViewPager;

import com.viewpagerindicator.TabPageIndicator;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentPagerAdapter;

import android.view.Menu;

import android.view.MenuItem;





public class MainActivity extends FragmentActivity {



	//声明viewpager对象以及tabpageIndicator对象

	private MyViewPager viewpager;

	private TabPageIndicator indicator;

	

	//声明装载Fragment的容器,以及Tab的String容器

	ArrayList<Fragment> fragmentList;

	private static String[] contents = new String[]{"首页","热门","关于"};

	

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        //add the fragment

        HomeFragment homeFragment = new HomeFragment();

    	HotFragment hotFragment = new HotFragment();

    	AboutFragment aboutFragment = new AboutFragment();

    	fragmentList = new ArrayList<Fragment>();

    	fragmentList.add(homeFragment);

    	fragmentList.add(hotFragment);

    	fragmentList.add(aboutFragment);

        //初始化 

        viewpager = (MyViewPager)findViewById(R.id.fragmentviewpager);

        indicator = (TabPageIndicator)findViewById(R.id.tabindicator);

        

        viewpager.setAdapter(new CustomPageAdapter(getSupportFragmentManager()));

        indicator.setViewPager(viewpager);

        

    }









	@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);

    }

    

    //viewpager适配器

    class CustomPageAdapter extends FragmentPagerAdapter{



		public CustomPageAdapter(FragmentManager fm) {

			super(fm);

			// TODO Auto-generated constructor stub

		}





		@Override

		public Fragment getItem(int arg0) {

			// TODO Auto-generated method stub

			return fragmentList.get(arg0);

		}



		@Override

		public int getCount() {

			// TODO Auto-generated method stub

			return fragmentList.size();

		}



		@Override

		public CharSequence getPageTitle(int position) {

			// TODO Auto-generated method stub

			return contents[position];

		}

		

		

    	

    }

}

HomeFragment代码如下：

package com.aeron.fragments;



import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.view.ViewGroup.LayoutParams;

import android.widget.TextView;



public class HomeFragment extends Fragment {



	@Override

	public void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

	}



	@Override

	public View onCreateView(LayoutInflater inflater, ViewGroup container,

			Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		//返回视图

		TextView textview = new TextView(getActivity());

		textview.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

		textview.setText("Home");

		textview.setGravity(Gravity.CENTER);

		return textview;

	}



	@Override

	public void onDestroy() {

		// TODO Auto-generated method stub

		super.onDestroy();

	}



	@Override

	public void onViewCreated(View view, Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onViewCreated(view, savedInstanceState);

	}



	@Override

	public void onActivityCreated(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onActivityCreated(savedInstanceState);

	}

	

	



	

	

}