我的ViewPager
司马飞鸿
public class MainActivity extends Activity {
private ViewPager viewpager;
private ArrayList<View> viewList;
private ArrayList<String> titleList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewpager=(ViewPager)this.findViewById(R.id.viewpager);
//加载要显示的页卡
LayoutInflater lf=getLayoutInflater().from(this);
View view1 = lf.inflate(R.layout.one, null);
View view2 = lf.inflate(R.layout.two, null);
View view3 = lf.inflate(R.layout.three, null);
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("标题1");
titleList.add("标题2");
titleList.add("标题3");
PagerAdapter adapter=new 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 CharSequence getPageTitle(int position) {
return titleList.get(position);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
container.addView(viewList.get(position));
return viewList.get(position);
}
};
viewpager.setAdapter(adapter);
}
}
<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>
2 有标题
public class MainActivity extends Activity {
private ViewPager viewpager;
private ArrayList<View> viewList;
private ArrayList<String> titleList;
private TextView textView1;
private TextView textView2;
private TextView textView3;
private int offset = 0;// 动画图片偏移量
private int currIndex = 0;// 当前页卡编号
private int bmpW;// 动画图片宽度
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
InitImageView(); //这个要放在前面
// 初始化头标
textView1 = (TextView) findViewById(R.id.text1);
textView2 = (TextView) findViewById(R.id.text2);
textView3 = (TextView) findViewById(R.id.text3);
textView1.setOnClickListener(new MyOnClickListener(0));
textView2.setOnClickListener(new MyOnClickListener(1));
textView3.setOnClickListener(new MyOnClickListener(2));
viewpager=(ViewPager)this.findViewById(R.id.vPager);
//加载要显示的页卡
LayoutInflater lf=getLayoutInflater();
View view1 = lf.inflate(R.layout.one, null);
View view2 = lf.inflate(R.layout.two, null);
View view3 = lf.inflate(R.layout.three, null);
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);
viewpager.setAdapter(new MyViewPagerAdapter(viewList)); //添加适配器
viewpager.setCurrentItem(0);
viewpager.setOnPageChangeListener(new MyOnPageChangeListener());
}
private class MyOnClickListener implements OnClickListener{
private int index=0;
public MyOnClickListener(int i) {
index=i;
}
@Override
public void onClick(View v) {
viewpager.setCurrentItem(index);
}
}
// //初始化动画，这个就是页卡滑动时，下面的横线也滑动的效果，在这里需要计算一些数据
private void InitImageView() {
imageView= (ImageView) findViewById(R.id.cursor);
bmpW = BitmapFactory.decodeResource(getResources(), R.drawable.tab_bottom_line_c).getWidth();// 获取图片宽度
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int screenW = dm.widthPixels;// 获取分辨率宽度
offset = (screenW / 3 - bmpW) / 2;// 计算偏移量
Matrix matrix = new Matrix();
matrix.postTranslate(offset, 0);
imageView.setImageMatrix(matrix);// 设置动画初始位置
}
public class MyOnPageChangeListener implements OnPageChangeListener{
int one = offset * 2 + bmpW;// 页卡1 -> 页卡2 偏移量
int two = one * 2;// 页卡1 -> 页卡3 偏移量
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageSelected(int arg0) {
Animation animation = new TranslateAnimation(one*currIndex, one*arg0, 0, 0);
currIndex = arg0;
animation.setFillAfter(true);// True:图片停在动画结束位置
animation.setDuration(300);
imageView.startAnimation(animation);
Toast.makeText(MainActivity.this, "您选择了"+ viewpager.getCurrentItem()+"页卡", Toast.LENGTH_SHORT).show();
}
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/cursor"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scaleType="matrix"
android:src="@drawable/tab_bottom_line_c" />
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="40.0dip"
android:background="#FFFFFF" >
<TextView
android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:gravity="center"
android:text=" @我"
android:textColor="#000000"
android:textSize="20.0dip" />
<TextView
android:id="@+id/text2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:gravity="center"
android:text="评论"
android:textColor="#000000"
android:textSize="20.0dip" />
<TextView
android:id="@+id/text3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:gravity="center"
android:text="私信"
android:textColor="#000000"
android:textSize="20.0dip" />
</LinearLayout>
<android.support.v4.view.ViewPager
android:id="@+id/vPager"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1.0"
android:background="#000000"
android:flipInterval="30"
android:persistentDrawingCache="animation" />
</LinearLayout>
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