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非常简单的viewpager+fragmen实现类似商城app结构

时间:2015-03-31 16:11:41      阅读:179      评论:0      收藏:0      [点我收藏+]

标签:viewpager   fragment   

    先说下思路在一个activity中的主布局加入supportv4架包中的viewpager,viewpager相当于一个listview,在viewpager中我们要放的fragment,对viewpager做监听,实现想要的效果,代码很简单一看就懂,一直上代码。

   主类

package com.example.fragtest;

import java.util.ArrayList;

import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.TextView;
import android.os.Build;

public class MainActivity extends FragmentActivity {
	private ArrayList<Fragment> list;
	private ViewPager viewPager;
	private TextView [] tvs=new TextView[4];
	private int pos=0;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		viewPager=(ViewPager) findViewById(R.id.viewPager);
		tvs[0]=(TextView) findViewById(R.id.tv_f);
		tvs[0].setBackgroundColor(0x99999999);
		tvs[1]=(TextView) findViewById(R.id.tv_s);
		tvs[2]=(TextView) findViewById(R.id.tv_t);
		tvs[3]=(TextView) findViewById(R.id.tv_tf);
		First mFirst=new First();
		Second msSecond=new Second();
		third mThird=new third();
		fourth mFourth=new fourth();
		list=new ArrayList<Fragment>();
		list.add(mFirst);
		list.add(msSecond);
		list.add(mThird);
		list.add(mFourth);
		viewPager.setAdapter(new MyFragAdapter(getSupportFragmentManager(), this, list));
		viewPager.setOnPageChangeListener(new OnPageChangeListener() {

			@Override
			public void onPageSelected(int arg0) {
				// TODO Auto-generated method stub
				for(int i=0;i<4;i++){
					if(i==arg0){
						tvs[i].setBackgroundColor(0x99999999);
					}else{
						tvs[i].setBackgroundColor(0xffffffff);
					}
				}
			}

			@Override
			public void onPageScrolled(int arg0, float arg1, int arg2) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onPageScrollStateChanged(int arg0) {
				// TODO Auto-generated method stub

			}
		});

		for(TextView tv:tvs){
			tv.setOnClickListener(new OnClickListener() {

				@Override
				public void onClick(View view) {
					// TODO Auto-generated method stub
					switch (view.getId()) {
					case R.id.tv_f:
						pos=0;
						break;
					case R.id.tv_s:
						pos=1;
						break;
					case R.id.tv_t:
						pos=2;
						break;
					case R.id.tv_tf:
						pos=3;
						break;
					default:
						break;
					}
					
					for(int i=0;i<4;i++){
						if(i==pos){
							tvs[i].setBackgroundColor(0x99999999);
						}else{
							tvs[i].setBackgroundColor(0xffffffff);
						}
					}
					viewPager.setCurrentItem(pos);
				}
				
			});
		}
	}


	@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);
	}



}
adapter

package com.example.fragtest;

import java.util.ArrayList;

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

public class MyFragAdapter extends FragmentPagerAdapter{
	private Context mContext;
  private ArrayList<Fragment> mlist;
	public MyFragAdapter(FragmentManager fm,Context context,ArrayList<Fragment> list) {
		super(fm);
		mContext=context;
		if(list!=null){
			mlist=list;
		}else{
			mlist=new ArrayList<Fragment>();
		}
		// TODO Auto-generated constructor stub
	}

	@Override
	public Fragment getItem(int arg0) {
		// TODO Auto-generated method stub
		return mlist.get(arg0);
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return mlist.size();
	}

}

四个fragment

package com.example.fragtest;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;


public class First extends Fragment{
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		View view=inflater.inflate(R.layout.view, container, false);
		TextView tv=(TextView) view.findViewById(R.id.tv_name);
		tv.setText("第一个");
		return view;
		
	}

}

package com.example.fragtest;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class Second extends Fragment{
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		View view=inflater.inflate(R.layout.view, container, false);
		TextView tv=(TextView) view.findViewById(R.id.tv_name);
		tv.setText("第二个");
		return view;
		
	}
}

package com.example.fragtest;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class third extends Fragment{
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		View view=inflater.inflate(R.layout.view, container, false);
		TextView tv=(TextView) view.findViewById(R.id.tv_name);
		tv.setText("第三个");
		return view;
		
	}
}

package com.example.fragtest;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class fourth extends Fragment{
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		View view=inflater.inflate(R.layout.view, container, false);
		TextView tv=(TextView) view.findViewById(R.id.tv_name);
		tv.setText("第四个");
		return view;
		
	}
}

主布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <android.support.v4.view.ViewPager
        android:layout_above="@+id/ll_bottom"
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />
        <LinearLayout 
    android:id="@+id/ll_bottom"
    android:layout_alignParentBottom="true"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="50dp">
   <TextView
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:background="#999999" />
   <LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">
     <TextView
         android:id="@+id/tv_f"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="首页"
            android:textSize="16sp" />
       <TextView
            android:layout_width="2dp"
            android:layout_height="match_parent"
            android:background="#999999" />
     
      <TextView
          android:id="@+id/tv_s"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="热帖"
            android:textSize="16sp" />
        <TextView
            android:layout_width="2dp"
            android:layout_height="match_parent"
            android:background="#999999" />
      
       <TextView
           android:id="@+id/tv_t"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="活动"
            android:textSize="16sp" />
         <TextView
            android:layout_width="2dp"
            android:layout_height="match_parent"
            android:background="#999999" />
       
        <TextView
            android:id="@+id/tv_tf"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="我"
            android:textSize="16sp" />
    </LinearLayout>
</LinearLayout>


</RelativeLayout>


 fragment布局

   

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    
<TextView 
    android:id="@+id/tv_name"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:textSize="25sp"
    android:text="第一个"/>
</LinearLayout>
下载地址    http://download.csdn.net/detail/u012303938/8550513


非常简单的viewpager+fragmen实现类似商城app结构

标签:viewpager   fragment   

原文地址:http://blog.csdn.net/u012303938/article/details/44779343

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