圆角ListView

 

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.AdapterView;
import android.widget.ListView;

import com.jasson.core.R;

/**
 * 圆角ListView
 */
public class CornerListView extends ListView {

    public CornerListView(Context context) {
        this(context, null);
    }

    public CornerListView(Context context, AttributeSet attrs) {
        super(context, attrs);
        //整个listview的圆角背景
        this.setBackgroundResource(R.drawable.corner_list_bg);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        switch (ev.getAction()) {
        case MotionEvent.ACTION_DOWN:
                int x = (int) ev.getX();
                int y = (int) ev.getY();
                int itemnum = pointToPosition(x, y);

                if (itemnum == AdapterView.INVALID_POSITION){
                    break;
                } else {
                        if (itemnum == 0){
                                if (itemnum == (getAdapter().getCount()-1)) {
                                    //只有一项
                                    setSelector(R.drawable.corner_list_single_item);
                                } else {
                                    //第一项
                                    setSelector(R.drawable.corner_list_first_item);
                                }
                        } else if (itemnum==(getAdapter().getCount()-1)){
                             //最后一项
                            setSelector(R.drawable.corner_list_last_item);
                        } else {
                            //中间项
                            setSelector(R.drawable.corner_list_item);
                        }
                }
                break;
        case MotionEvent.ACTION_UP:
                break;
        }
        return super.onInterceptTouchEvent(ev);
    }
}