MyIndicator

package com.example.monthtest3;

import java.util.ArrayList;
import java.util.HashMap;

import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.AttributeSet;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MyIndicator extends HorizontalScrollView implements OnClickListener{
private ViewPager viewPager;
private LinearLayout linearLayout;
private HashMap<TextView, Integer> tvMap = new HashMap<TextView, Integer>();
private ArrayList<String> strList=new ArrayList<String>();
public MyIndicator(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
initView();
}

private void initView() {
// TODO Auto-generated method stub

}

public MyIndicator(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
initView();
}

public MyIndicator(Context context) {
super(context);
// TODO Auto-generated constructor stub
initView();
}
public void setViewPager(ViewPager viewPager){
this.viewPager=viewPager;
linearLayout = new LinearLayout(getContext());
linearLayout.removeAllViews();
this.addView(linearLayout);
LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);

params.setMargins(45, 20, 45, 20);
int count = viewPager.getAdapter().getCount();
for (int i = 0; i < count; i++) {
String title=(String) viewPager.getAdapter().getPageTitle(i);
strList.add(title);
TextView textView=new TextView(getContext());
textView.setText(title);
textView.setTextSize(25);
if(i==0){
textView.setTextColor(Color.GREEN);

}else{
textView.setTextColor(Color.BLACK);
}
tvMap.put(textView, i);
textView.setId(i);
textView.setOnClickListener(this);
linearLayout.addView(textView,params);
}
viewPager.setOnPageChangeListener(new OnPageChangeListener() {

@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
for (int i = 0; i < linearLayout.getChildCount(); i++) {
TextView textView=(TextView) linearLayout.getChildAt(i);
if(arg0==i){
textView.setTextColor(Color.GREEN);

}else{
textView.setTextColor(Color.BLACK);
}
}
}

@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

}
});
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//		int id=v.getId();
//		viewPager.setCurrentItem(id);
Integer position = tvMap.get(v);
viewPager.setCurrentItem(position);
}

}

package com.example.monthtest3;

import java.util.Set;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends FragmentActivity{
String[] titles={"资讯","热点","博客","推荐"};
private ViewPager viewPager;
private MyIndicator headertitle;
private Button b2;
private Button b3;
private Button b1;
private ImageView head;

//private FragmentManager fragmentmanager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = (ViewPager) findViewById(R.id.viewPager);
headertitle = (MyIndicator) findViewById(R.id.headertitle);

//	headertitle.setOnClickListener(this);
// fragmentmanager = getSupportFragmentManager();
viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {

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

@Override
public Fragment getItem(int position) {
// TODO Auto-generated method stub
Fragment fragment = null;

switch (position) {
case 0:
fragment = new Fragment1();
break;
case 1:
fragment = new Fragment2();
break;
case 2:
fragment = new Fragment3();
break;
case 3:
fragment = new Fragment4();
break;

default:
break;
}
return fragment;
}

@Override
public CharSequence getPageTitle(int position) {
// TODO Auto-generated method stub
return titles[position];
}
});
headertitle.setViewPager(viewPager);
}
//@Override
//	public void onClick(View v) {
//
//		// TODO Auto-generated method stub
//
//
//		switch (headertitle.) {
//		case 0:
//			viewPager.setCurrentItem(0);
//
//		break;
//		case 1:
//			viewPager.setCurrentItem(1);
//		//fragment=new Fragment3();
//		break;
//		case 2:
//			viewPager.setCurrentItem(2);
//		break;
//
//
//		default:
//		break;
//		}
//	}

}