android Gallery

目标：实现横向滚动，获取滚动后位置

galleryX.setCallbackDuringFling(false); //false 为滚动后返回位置　true 为点击时返回位置
galleryX.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
			@Override
			public void onItemSelected(AdapterView parent, View v,int position, long id) {
				Log.e("", "position:" + position);
			}

			@Override
			public void onNothingSelected(AdapterView arg0) {
			}

		});