Android 百度地圖 SDK v3.0.0 （四） 引入離線地圖功能

2、離線地圖城市信息的實體Bean

package com.zhy.zhy_baidu_ditu_demo00;

public class OfflineMapCityBean
{
	private String cityName;
	private int cityCode;
	/**
	 * 下載的進度
	 */
	private int progress;
	
	private Flag flag = Flag.NO_STATUS;
	/**
	 * 下載的狀態：無狀態，暫停，正在下載
	 * @author zhy
	 *
	 */
	public enum Flag
	{
		NO_STATUS,PAUSE,DOWNLOADING
	}

	public Flag getFlag()
	{
		return flag;
	}

	public void setFlag(Flag flag)
	{
		this.flag = flag;
	}

	public OfflineMapCityBean()
	{
	}

	public OfflineMapCityBean(String cityName, int cityCode, int progress)
	{
		this.cityName = cityName;
		this.cityCode = cityCode;
		this.progress = progress;
	}

	public String getCityName()
	{
		return cityName;
	}

	public void setCityName(String cityName)
	{
		this.cityName = cityName;
	}

	public int getCityCode()
	{
		return cityCode;
	}

	public void setCityCode(int cityCode)
	{
		this.cityCode = cityCode;
	}

	public int getProgress()
	{
		return progress;
	}

	public void setProgress(int progress)
	{
		this.progress = progress;
	}

}

3、離線地圖的使用

/**
	 * 初始化離線地圖
	 */
	private void initOfflineMap()
	{
		mOfflineMap = new MKOfflineMap();
		// 設置監聽
		mOfflineMap.init(new MKOfflineMapListener()
		{
			@Override
			public void onGetOfflineMapState(int type, int state)
			{
				switch (type)
				{
				case MKOfflineMap.TYPE_DOWNLOAD_UPDATE:
					// 離線地圖下載更新事件類型
					MKOLUpdateElement update = mOfflineMap.getUpdateInfo(state);
					Log.e(TAG, update.cityName +  , + update.ratio);
					for (OfflineMapCityBean bean : mDatas)
					{
						if (bean.getCityCode() == state)
						{
							bean.setProgress(update.ratio);
							bean.setFlag(Flag.DOWNLOADING);
							break;
						}
					}
					mAdapter.notifyDataSetChanged();
					Log.e(TAG, TYPE_DOWNLOAD_UPDATE);
					break;
				case MKOfflineMap.TYPE_NEW_OFFLINE:
					// 有新離線地圖安裝
					Log.e(TAG, TYPE_NEW_OFFLINE);
					break;
				case MKOfflineMap.TYPE_VER_UPDATE:
					// 版本更新提示
					break;
				}

			}
		});
	}

	private void initData()
	{

		// 獲得所有熱門城市
		ArrayList offlineCityList = mOfflineMap
				.getHotCityList();
		// 手動添加了西安
		MKOLSearchRecord xian = new MKOLSearchRecord();
		xian.cityID = 233;
		xian.cityName = 西安市;
		offlineCityList.add(xian);
		// 獲得所有已經下載的城市列表
		ArrayList allUpdateInfo = mOfflineMap
				.getAllUpdateInfo();
		// 設置所有數據的狀態
		for (MKOLSearchRecord record : offlineCityList)
		{
			OfflineMapCityBean cityBean = new OfflineMapCityBean();
			cityBean.setCityName(record.cityName);
			cityBean.setCityCode(record.cityID);

			if (allUpdateInfo != null)//沒有任何下載記錄，返回null,為啥不返回空列表~~
			{
				for (MKOLUpdateElement ele : allUpdateInfo)
				{
					if (ele.cityID == record.cityID)
					{
						cityBean.setProgress(ele.ratio);
					}
				}

			}
			mDatas.add(cityBean);
		}

	}

private void initListView()
	{
		mListView = (ListView) findViewById(R.id.id_offline_map_lv);
		mAdapter = new MyOfflineCityBeanAdapter();
		mListView.setAdapter(mAdapter);

		mListView.setOnItemClickListener(new OnItemClickListener()
		{
			@Override
			public void onItemClick(AdapterView parent, View view,
					int position, long id)
			{
				int cityId = mDatas.get(position).getCityCode();
				if (mCityCodes.contains(cityId))
				{
					removeTaskFromQueue(position, cityId);
				} else
				{
					addToDownloadQueue(position, cityId);
				}

			}
		});
	}

/**
	 * 熱門城市地圖列表的Adapter
	 * 
	 * @author zhy
	 * 
	 */
	class MyOfflineCityBeanAdapter extends BaseAdapter
	{

		@Override
		public boolean isEnabled(int position)
		{
			if (mDatas.get(position).getProgress() == 100)
			{
				return false;
			}
			return super.isEnabled(position);
		}

		@Override
		public int getCount()
		{
			return mDatas.size();
		}

		@Override
		public Object getItem(int position)
		{
			return mDatas.get(position);
		}

		@Override
		public long getItemId(int position)
		{
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent)
		{
			OfflineMapCityBean bean = mDatas.get(position);
			ViewHolder holder = null;
			if (convertView == null)
			{
				holder = new ViewHolder();
				convertView = mInflater.inflate(R.layout.offlinemap_item,
						parent, false);
				holder.cityName = (TextView) convertView
						.findViewById(R.id.id_cityname);
				holder.progress = (TextView) convertView
						.findViewById(R.id.id_progress);
				convertView.setTag(holder);
			} else
			{
				holder = (ViewHolder) convertView.getTag();
			}

			holder.cityName.setText(bean.getCityName());
			int progress = bean.getProgress();
			String progressMsg = ;
			// 根據進度情況，設置顯示
			if (progress == 0)
			{
				progressMsg = 未下載;
			} else if (progress == 100)
			{
				bean.setFlag(Flag.NO_STATUS);
				progressMsg = 已下載;
			} else
			{
				progressMsg = progress + %;
			}
			// 根據當前狀態，設置顯示
			switch (bean.getFlag())
			{
			case PAUSE:
				progressMsg += 【等待下載】;
				break;
			case DOWNLOADING:
				progressMsg += 【正在下載】;
				break;
			default:
				break;
			}
			holder.progress.setText(progressMsg);
			return convertView;
		}

		private class ViewHolder
		{
			TextView cityName;
			TextView progress;

		}
	}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{

	switch (item.getItemId())
	{
	case R.id.id_menu_map_offline:
		Intent intent = new Intent(MainActivity.this,
					OfflineMapActivity.class);
		startActivity(intent);
		break;
	...
	}	
}