私はAndroidビューページャーを使用して画像とテキストを表示しましたが、ユーザーが画像を変更していない場合、数秒後に自動的に画像の変更を開始し、ユーザーが再び指を使い始めると画像が表示されます自動的に変更されるべきではありませんか?
ハンドラーを使用して遅延を作成しようとしましたが、うまくいきませんでしたか?
誰か助けてください
public class SimpleImageViewerActivity extends Activity implements ViewPager.OnPageChangeListener{
private Handler handler;
ViewPager myPager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.imageslideshow);
MyPagerAdapter adapter = new MyPagerAdapter();
myPager = (ViewPager) findViewById(R.id.slideShowPager);
myPager.setAdapter(adapter);
myPager.setCurrentItem(0);
handler = new Handler();
myPager.setOnPageChangeListener(this);
}
private class MyPagerAdapter extends PagerAdapter {
public int getCount() {
return 5;
}
public Object instantiateItem(View collection, int position) {
LayoutInflater inflater = (LayoutInflater) collection.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
int resId = 0;
switch (position) {
case 0:
resId = R.layout.farleft;
break;
case 1:
resId = R.layout.left;
break;
case 2:
resId = R.layout.middle;
break;
case 3:
resId = R.layout.right;
break;
case 4:
resId = R.layout.farright;
break;
}
View view = inflater.inflate(resId, null);
((ViewPager) collection).addView(view, 0);
return view;
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
@Override
public void finishUpdate(View arg0) {
// TODO Auto-generated method stub
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
// TODO Auto-generated method stub
}
@Override
public Parcelable saveState() {
// TODO Auto-generated method stub
return null;
}
@Override
public void startUpdate(View arg0) {
// TODO Auto-generated method stub
}
}
@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
updateUI(arg2);
}
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
//updateUI(arg0);
}
public void onNothingSelected(AdapterView<?> adapterView) {
final int i =0;
adapterView.postDelayed(new Runnable(){
@Override
public void run() {
// TODO Auto-generated method stub
updateUI(i);
}
}, 5000);
Toast.makeText(this, "In nothing selected method",Toast.LENGTH_SHORT).show();
}
private void updateUI(final int fi) {
/* handler.post(new Runnable() {
public void run() {
gallery.setSelection(i);
viewPager.setCurrentItem(i);
//textView.setText("Photo #" + i);
}
});*/
handler.postDelayed(new Runnable() {
public void run() {
int i=fi;
int j = i;
myPager.setCurrentItem(j++);
System.out.println("Hello");
}
},1000);
}
}