使用viewpager adapter实现微信的滑动界面

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<android.support.v4.view.ViewPager
android:id="@+id/vp"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1">
</android.support.v4.view.ViewPager>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<LinearLayout
android:id="@+id/lin_weixin"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical"
android:layout_marginBottom="5dp" >

<ImageView
android:id="@+id/lin_weixin_iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/mk" />

<TextView
android:id="@+id/lin_weixin_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#389B15"
android:text="微信" />
</LinearLayout>

<LinearLayout
android:id="@+id/lin_tongxun"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >

<ImageView
android:id="@+id/lin_tongxun_iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/tg" />

<TextView
android:id="@+id/lin_tongxun_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="通讯录" />
</LinearLayout>

<LinearLayout
android:id="@+id/lin_faxian"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >

<ImageView
android:id="@+id/lin_faxian_iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/fg" />

<TextView
android:id="@+id/lin_faxian_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="发现" />
</LinearLayout>

<LinearLayout
android:id="@+id/lin_wo"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >

<ImageView
android:id="@+id/lin_wo_iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/pg" />

<TextView
android:id="@+id/lin_wo_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="我" />
</LinearLayout>
</LinearLayout>
</LinearLayout>

public class MainActivity extends Activity implements OnClickListener {

//定义一个集合，里面存放的是界面下方存放的四个布局文件个
private List<View> listvViews = new ArrayList<View>();
//定义一个数组
private LinearLayout[] linearLayouts = new LinearLayout[4];
//定义一个数组，里面存放的是界面下方四个布局的ID
private int[] linIDs = { R.id.lin_weixin, R.id.lin_tongxun,
R.id.lin_faxian, R.id.lin_wo };

//定义一个数据，用于存储图片
private ImageView[] imageView = new ImageView[4];
//定义一个数组，里面存放的是布局中需要的图片的id
private int[] imgIDs = { R.id.lin_weixin_iv, R.id.lin_tongxun_iv,
R.id.lin_faxian_iv, R.id.lin_wo_iv };

//定义一个数组，里面存放的是当四个布局被选中的时候显示的图片
private int[] imageK = { R.drawable.mk, R.drawable.tk, R.drawable.fk,
R.drawable.pk };
//定义一个数组，里面存放的是当四个布局未被选中的时候显示的图片
private int[] imageG = { R.drawable.mg, R.drawable.tg, R.drawable.fg,
R.drawable.pg };

//定义一个数组，里面存放的是布局中显示的文字
private TextView[] textViews = new TextView[4];
//定义一个数组，里面存放的是布局中显示的文字的ID
private int[] tvIDs = { R.id.lin_weixin_tv, R.id.lin_tongxun_tv,
R.id.lin_faxian_tv, R.id.lin_wo_tv };
private ViewPager viewPager;
private MyViewPagerAdapter myViewPagerAdapter;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
initViewOpers();

// 给viewpager绑定数据源
myViewPagerAdapter = new MyViewPagerAdapter(listvViews);
viewPager.setAdapter(myViewPagerAdapter);
}

private void initViewOpers() {
viewPager.setOnPageChangeListener(new OnPageChangeListener() {

public void onPageSelected(int arg0) {
//当滑动viewpager的时候，下面的图片和字体随之改变
changeColor(arg0);
}

public void onPageScrolled(int arg0, float arg1, int arg2) {

}

public void onPageScrollStateChanged(int arg0) {

}
});
}

private void initView() {

viewPager = (ViewPager) findViewById(R.id.vp);
//获取每一个布局控件并给每一个布局设置点击事件
for (int i = 0; i < linIDs.length; i++) {
linearLayouts[i] = (LinearLayout) findViewById(linIDs[i]);
linearLayouts[i].setOnClickListener(MainActivity.this);
}

//获取图片空间
for (int i = 0; i < imgIDs.length; i++) {
imageView[i] = (ImageView) findViewById(imgIDs[i]);
}

//获取textview控件
for (int i = 0; i < textViews.length; i++) {
textViews[i] = (TextView) findViewById(tvIDs[i]);
}
}

private void initData() {
//使用布局填充器获取布局（每一个布局里面显示的是我们看到的具体内容）
View view1 = getLayoutInflater().inflate(R.layout.weixin_item, null);
View view2 = getLayoutInflater().inflate(R.layout.tongxun_item, null);
View view3 = getLayoutInflater().inflate(R.layout.faxian_item, null);
View view4 = getLayoutInflater().inflate(R.layout.wo_item, null);
//将每一个局部添加到集合中
listvViews.add(view1);
listvViews.add(view2);
listvViews.add(view3);
listvViews.add(view4);
}

public void onClick(View v) {
//当点击下面布局的时候图片和文字随之改变
switch (v.getId()) {
case R.id.lin_weixin:
changeColor(0);
viewPager.setCurrentItem(0);
break;

case R.id.lin_tongxun:
changeColor(1);
viewPager.setCurrentItem(1);
break;
case R.id.lin_faxian:
changeColor(2);
viewPager.setCurrentItem(2);
break;
case R.id.lin_wo:
changeColor(3);
viewPager.setCurrentItem(3);
break;
}
}

// 更改图片和textview中的字体颜色（选择的图片和字体都是#389B15，没有选择的是#6D6D6D）
private void changeColor(int index) {
for (int i = 0; i < 4; i++) {
if (index == i) {
textViews[index].setTextColor(Color.parseColor("#389B15"));
imageView[i].setImageResource(imageK[i]);
} else {
textViews[i].setTextColor(Color.parseColor("#6D6D6D"));
imageView[i].setImageResource(imageG[i]);
}
}
}
}

public class MyViewPagerAdapter extends PagerAdapter {
private List<View> listvViews = null;
private Context context;

public MyViewPagerAdapter(List<View> listvViews) {
super();
this.listvViews = listvViews;
}

public int getCount() {
return listvViews.size();
}

public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}

public void destroyItem(ViewGroup container, int position, Object object) {
// super.destroyItem(container, position, object);
//这一步必须写（用于移除viewpager）
container.removeView(listvViews.get(position));
}

public Object instantiateItem(ViewGroup container, int position) {
View view = listvViews.get(position);
//container指的就是viewpager对象
container.addView(listvViews.get(position));
return view;
}

}