ViewPager滑动特效实现

ewPager最常用于结合Fragment,这是一个方便的方式来供应和管理每个页面的生命周期。

MainAcitivity的代码

import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.PagerTabStrip;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup; public class MainActivity extends Activity { private View view1, view2, view3;// 需要滑动的页卡
private ViewPager viewPager;
private PagerTabStrip pagerTabStrip;
private List<View> viewList;// 把需要滑动的页卡添加到这个list中
private List<String> titleList;// viewpager的标题 @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 像普通控件一样先初始化
viewPager = (ViewPager) findViewById(R.id.viewpager);
pagerTabStrip = (PagerTabStrip) findViewById(R.id.pagertab);
pagerTabStrip.setDrawFullUnderline(false);//设置下划线不整页显示
pagerTabStrip.setTextSpacing(1000);//设置标题之间的距离
initView();
MyAdapter pagerAdapter = new MyAdapter();
viewPager.setAdapter(pagerAdapter);
}
//填充布局,设置每一页的标题
private void initView() {
view1 = findViewById(R.layout.layout1);
view2 = findViewById(R.layout.layout2);
view3 = findViewById(R.layout.layout3);
viewList = new ArrayList<View>();// 将要分页显示的View装入数组中
viewList.add(view1);
viewList.add(view2);
viewList.add(view3);
titleList = new ArrayList<String>();// 每个页面的Title数据
titleList.add("第一个页面");
titleList.add("第二个页面");
titleList.add("第三个页面");
} public class MyAdapter extends PagerAdapter {
@Override
public boolean isViewFromObject(View arg0, Object arg1) { return arg0 == arg1;
} @Override
public int getCount() { return viewList.size();
} @Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(viewList.get(position)); } @Override
public int getItemPosition(Object object) { return super.getItemPosition(object);
} @Override
public CharSequence getPageTitle(int position) { return titleList.get(position); } // 将每一页的布局填充如ViewGroup容器中
@Override
public Object instantiateItem(ViewGroup container, int position) {
container.addView(viewList.get(position)); return viewList.get(position);
} }; }

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" > <android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" > <android.support.v4.view.PagerTabStrip
android:id="@+id/pagertab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"/> </android.support.v4.view.ViewPager> </LinearLayout>
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