我正在开发一个应用程序,其中有许多产品存储在sqlite数据库中。
我制作了一个水平滚动的回收器视图和卡片视图。但是卷轴本身太平滑了,孩子不会停在中心。
只有一个子项应该可见(如在选项卡视图页中)。
我是否应该使用 viewpager 来执行此操作,但必须创建如此多的片段。
import android.app.Activity;
import android.os.Build;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import com.retail.R;
import com.retail.beacons.beaconModel.OfferBeaconData;
import com.retail.manager.UserProfileManager;
import com.retail.ui.view.RobotoLightTextVew;
import com.squareup.picasso.Picasso;
import java.util.List;
/**
* Created by mahendra.chhimwal on 1/14/2016.
*/
public class BeaconOffersPagerAdapter extends PagerAdapter {
private Activity mContext;
private List<OfferBeaconData.OfferItem> mOfferItems;
public BeaconOffersPagerAdapter(Activity context, List<OfferBeaconData.OfferItem> offerItems) {
this.mContext = context;
this.mOfferItems = offerItems;
}
@Override
public int getCount() {
return mOfferItems == null ? 0 : mOfferItems.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public Object instantiateItem(final ViewGroup container, final int position) {
View view;
LayoutInflater inflater = LayoutInflater.from(mContext);
view = inflater.inflate(R.layout.item_beac_off_pager_item, container, false);
ImageView offerItemImage = (ImageView) view.findViewById(R.id.iv_offer_image);
RobotoLightTextVew tvWelcomeMsg = (RobotoLightTextVew) view.findViewById(R.id.tv_welcome_msg);
RobotoLightTextVew upperTitle = (RobotoLightTextVew) view.findViewById(R.id.tv_upper_title);
RobotoLightTextVew bottomTitle = (RobotoLightTextVew) view.findViewById(R.id.tv_bottom_title);
RobotoLightTextVew discountText = (RobotoLightTextVew) view.findViewById(R.id.tv_offer_discount);
//Updating views
Picasso.with(mContext).load(mOfferItems.get(position).getOfferProduct().getImageUri()).into(offerItemImage);
upperTitle.setText(mOfferItems.get(position).getOfferTitle());
String userName = UserProfileManager.getInstance().getName();
if (userName != null && userName.length() > 0) {
int toIndex = userName.indexOf(" ");
if (toIndex != -1) {
userName = userName.substring(0, toIndex);
}
tvWelcomeMsg.setVisibility(View.VISIBLE);
tvWelcomeMsg.setText(mContext.getString(R.string.welcome_greeting, userName));
}
bottomTitle.setText(mOfferItems.get(position).getOfferSecondTitle());
discountText.setText("" + mOfferItems.get(position).getOfferProduct().getMaxDiscount() + "% off");
return view;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
}
您可以使用Simple PagerAdapter进行该操作。像RecyclerViewAdapter一样膨胀您的视图。以上是我在代码中使用的示例示例。也不需要使用片段。
它仅适用于兼容的Android Lollipop。Android Lollipop 兩個新的小部件,讓你的生活更輕鬆,RecyclerView 和 CardView.you 必須創建簡單的標籤查看器