我正在开发一个应用程序,我必须使用viewpager,在viewpager中的所有项目完成后,我必须调用一个活动.我无法为此获得事件监听器.这也是我一直在推荐的内容：
https://github.com/chiuki/android-swipe-image-viewer/blob/master/src/com/sqisland/android/swipe_image_viewer/MainActivity.java
https://github.com/chiuki/android-swipe-image-viewer/blob/master/src/com/sqisland/android/swipe_image_viewer/MainActivity.java
这是我到目前为止所做的：
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
ImagePagerAdapter adapter = new ImagePagerAdapter();
viewPager.setAdapter(adapter);
OnPageChangeListener mListener = new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0,float arg1,int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
Log.i("Doing something here","On Scroll state changed");
}
};
viewPager.setOnPageChangeListener(mListener);
}
private class ImagePagerAdapter extends PagerAdapter {
private int[] mImages = new int[] { R.drawable.libin1,R.drawable.libin2 };
@Override
public int getCount() {
return mImages.length;
}
@Override
public boolean isViewFromObject(View view,Object object) {
return view == ((ImageView) object);
}
@Override
public Object instantiateItem(ViewGroup container,int position) {
Context context = MainActivity.this;
ImageView imageView = new ImageView(context);
int padding = context.getResources().getDimensionPixelSize(
R.dimen.padding_medium);
imageView.setPadding(padding,padding,padding);
imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
imageView.setImageResource(mImages[position]);
((ViewPager) container).addView(imageView,0);
return imageView;
}
@Override
public void destroyItem(ViewGroup container,int position,Object object) {
((ViewPager) container).removeView((ImageView) object);
}
}
}
我的问题是如果viewpager中的所有项目都已完成,如何获取事件监听器.
任何形式的帮助将不胜感激.
解决方法
private OnPageChangeListener mListener = new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
selectedIndex = arg0;
}
boolean callHappened;
@Override
public void onPageScrolled(int arg0,int arg2) {
// TODO Auto-generated method stub
if( mPageEnd && arg0 == selectedIndex && !callHappened)
{
Log.d(getClass().getName(),"Okay");
mPageEnd = false;//To avoid multiple calls.
callHappened = true;
}else
{
mPageEnd = false;
}
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
if(selectedIndex == adapter.getCount() - 1)
{
mPageEnd = true;
}
}
};
ViewPager.setOnPageChangeListener(mListener);
onPageScrolled或onPageSelected您可以在此处使用任何这些,并且还检查所选页面是否等于ViewPager中的项目数.
