[英]Unable to get the card index
我正在尝试使用此代码获取在屏幕上处于活动状态的卡的索引。
import java.util.ArrayList;
import java.util.Arrays;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.glass.app.Card;
import com.google.android.glass.touchpad.Gesture;
import com.google.android.glass.touchpad.GestureDetector;
import com.google.android.glass.widget.CardScrollAdapter;
import com.google.android.glass.widget.CardScrollView;
import com.google.api.services.mirror.model.TimelineItem;
public class MainActivity extends Activity {
private GestureDetector mGestureDetector;
String identifysource;
int cardindex;
private static ArrayList<Card> sourceCard = new ArrayList<Card>();
private ArrayList<String> sourceText = new ArrayList<String>(Arrays.asList("PCWorld", "TechCrunch"));
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
for(int i=0;i<sourceText.size();i++)
{
System.out.println("whats up");
Card card = new Card(this);
identifysource=sourceText.get(i);
card.setText(identifysource);
sourceCard.add(card);
}
System.out.println(this);
mGestureDetector = createGestureDetector(this);
CardScrollView csvCardsView = new CardScrollView(this);
csaAdapter cvAdapter = new csaAdapter();
csvCardsView.setAdapter(cvAdapter);
csvCardsView.activate();
setContentView(csvCardsView);
cardindex=csvCardsView.getSelectedItemPosition();
}
private static class csaAdapter extends CardScrollAdapter
{
@Override
public int findIdPosition(Object id)
{
return -1;
}
@Override
public int findItemPosition(Object item)
{
return sourceCard.indexOf(item);
}
@Override
public int getCount()
{
return sourceCard.size();
}
@Override
public Object getItem(int position)
{
return sourceCard.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
return sourceCard.get(position).toView();
}
}
}
这导致每次输出相同的cardindex输出,即0,我尝试使用cvAdapter.findItemPosition()获取位置,但每次也返回-1。
从CardScrollView实现onClickListener。 您可以在其中确定选择了哪个项目。
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