android 滑动的tabhost

package com.wxw.activity; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.EditText; import android.widget.RelativeLayout; import android.widget.TextView; import com.wxw.adpter.MyPagerAdapter; public class TabHostDemoActivity extends Activity { /** Called when the activity is first created. */ private ViewPager myViewPager; private MyPagerAdapter myAdapter; private LayoutInflater mInflater; private List<View> listViews; private EditText editText1, editText2, editText3; private View layout1 = null; private View layout2 = null; private View layout3 = null; private View viewElement = null; private TextView textView1, textView2, textView3; private RelativeLayout relativeLayout1, relativeLayout2, relativeLayout3; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); this.getViewById(); relativeLayout1.setOnClickListener(new OnClickListener() { public void onClick(View v) { setImageBackground(0); myViewPager.setCurrentItem(0); } }); relativeLayout2.setOnClickListener(new OnClickListener() { public void onClick(View v) { setImageBackground(1); myViewPager.setCurrentItem(1); } }); relativeLayout3.setOnClickListener(new OnClickListener() { public void onClick(View v) { setImageBackground(2); myViewPager.setCurrentItem(2); } }); listViews = new ArrayList<View>(); mInflater = getLayoutInflater(); layout1 = mInflater.inflate(R.layout.help1, null); layout2 = mInflater.inflate(R.layout.help2, null); layout3 = mInflater.inflate(R.layout.help3, null); listViews.add(layout1); listViews.add(layout2); listViews.add(layout3); myAdapter = new MyPagerAdapter(listViews); myViewPager.setAdapter(myAdapter); myViewPager.setCurrentItem(0); /** * viewPage页面改變监听器 */ myViewPager.setOnPageChangeListener(new OnPageChangeListener() { public void onPageSelected(int arg0) { viewElement = listViews.get(arg0); // activity从1到2滑动，2被加载后掉用此方法 switch (arg0) { case 0: editText1 = (EditText) findViewById(R.id.one); editText1.setText("常规查询"); setImageBackground(0); break; case 1: editText2 = (EditText) findViewById(R.id.two); editText2.setText("周边查询"); setImageBackground(1); break; case 2: editText3 = (EditText) findViewById(R.id.three); editText3.setText("快速通道"); setImageBackground(2); break; default: break; } } public void onPageScrolled(int arg0, float arg1, int arg2) { // 从1到2滑动，在1滑动前调用 } public void onPageScrollStateChanged(int arg0) { Log.d("k", "onPageScrollStateChanged - " + arg0); // 状态有三个0空闲，1是增在滑行中，2目标加载完毕 } }); } /** * 通过id获取控件 */ private void getViewById() { // 顶部的三个tab标签 relativeLayout1 = (RelativeLayout) findViewById(R.id.rmml1); relativeLayout2 = (RelativeLayout) findViewById(R.id.rmml2); relativeLayout3 = (RelativeLayout) findViewById(R.id.rmml3); textView1 = (TextView) relativeLayout1.findViewById(R.id.textView1); textView2 = (TextView) relativeLayout2.findViewById(R.id.textView2); textView3 = (TextView) relativeLayout3.findViewById(R.id.textView3); myViewPager = (ViewPager) findViewById(R.id.myMesPager); } private void setImageBackground(int position) { switch (position) { case 0: relativeLayout1.setBackgroundResource(R.drawable.focus); relativeLayout2.setBackgroundResource(R.drawable.no_focus); relativeLayout3.setBackgroundResource(R.drawable.no_focus); textView1.setTextColor(Color.WHITE); textView2.setTextColor(Color.GRAY); textView3.setTextColor(Color.GRAY); break; case 1: relativeLayout1.setBackgroundResource(R.drawable.no_focus); relativeLayout2.setBackgroundResource(R.drawable.focus); relativeLayout3.setBackgroundResource(R.drawable.no_focus); textView1.setTextColor(Color.GRAY); textView2.setTextColor(Color.WHITE); textView3.setTextColor(Color.GRAY); break; case 2: relativeLayout1.setBackgroundResource(R.drawable.no_focus); relativeLayout2.setBackgroundResource(R.drawable.no_focus); relativeLayout3.setBackgroundResource(R.drawable.focus); textView1.setTextColor(Color.GRAY); textView2.setTextColor(Color.GRAY); textView3.setTextColor(Color.WHITE); break; default: break; } } }