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   源码介绍

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package com.tarena.tlbs.view;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.Vector;

import org.fengwx.gif.GifImageView;
import org.jivesoftware.smack.packet.Message;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.map.ItemizedOverlay;
import com.baidu.mapapi.map.MKMapViewListener;
import com.baidu.mapapi.map.MapPoi;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.OverlayItem;
import com.baidu.platform.comapi.basestruct.GeoPoint;
import com.tarena.tlbs.R;
import com.tarena.tlbs.TApplication;
import com.tarena.tlbs.adapter.FaceAdapter;
import com.tarena.tlbs.biz.implAsmack.PrivateChatBiz;
import com.tarena.tlbs.dao.MessageDAO;
import com.tarena.tlbs.model.PrivateChatEntity;
import com.tarena.tlbs.util.ChatUtil;
import com.tarena.tlbs.util.Const;

import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.drawable.Drawable;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.provider.MediaStore;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;

public class PrivateChatActivity extends BaseActivity {
	TextView tvFriendName;
	EditText etBody;
	Button btnSend;
	String friendUser;
	ShowPrivateChatMessageReceiver receiver;

	ScrollView scrollView;
	LinearLayout linearLayout;
	Handler handler = new Handler();

	Button btnFace;
	GridView gridView;
	FaceAdapter faceAdapter;

	Button btnImage;
	Button btnAudio;
	AlertDialog alertDialog;

	// 录音
	MediaRecorder mediaRecorder;

	MapView mapView;

	// 指定一个位置，如果得到的是4.9E-324,就用指定的位标。
	double longitude = 116.471499;
	double latitude = 39.882367;

	// 得位置的客户端
	LocationClient locationClient;

	MyOverLay myOverLay;

	TextView tvMore;
	Button btnMap;
	LinearLayout linearLayoutMore;

	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		// TODO Auto-generated method stub
		int newOrientiation = newConfig.orientation;
		super.onConfigurationChanged(newConfig);
	}

	// 在你关心的人手机上装一个程序得坐标，发给你
	// 在你手机上得到坐标后，用mapView显示你关心的人的位置。
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		try {
			friendUser = this.getIntent().getStringExtra(Const.KEY_DATA);
			setContentView(R.layout.private_chat);
			setupView();
			addListener();
			// 查询以前的聊天内容，显示出来
			MessageDAO messageDAO = new MessageDAO(this);
			ArrayList<Message> list = messageDAO.query(this, friendUser);
			for (Message message : list) {
				// 显示
				showMessage(this, message);
			}

			receiver = new ShowPrivateChatMessageReceiver();
			this.registerReceiver(receiver, new IntentFilter(
					Const.ACTION_SHOW_PRIVATE_CHAT_MSG));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		try {
			this.unregisterReceiver(receiver);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		try {
			super.onActivityResult(requestCode, resultCode, data);
			if (resultCode == this.RESULT_OK) {
				// 得到选中的图
				Uri imageUri = data.getData();
				Bitmap bitmap = MediaStore.Images.Media.getBitmap(
						getContentResolver(), imageUri);

				// 图的数据放到输出流
				ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
				// 1：格式
				// 2:质量，最大值是100,质量好
				// 4:图压缩到输出流
				bitmap.compress(CompressFormat.PNG, 30, outputStream);

				// 再从输出流中得到byte[]
				byte[] imageData = outputStream.toByteArray();

				// 调ChatUtil.addImageTag()
				String body = ChatUtil.addImageTag(imageData);

				// 发送
				sendMessage(body);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void addListener() {
		btnMap.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				try {
					linearLayoutMore.setVisibility(View.GONE);
					mapView.setVisibility(View.VISIBLE);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
		tvMore.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				try {
					if (linearLayoutMore.getVisibility() == View.GONE) {
						linearLayoutMore.setVisibility(View.VISIBLE);
					} else if (linearLayoutMore.getVisibility() == View.VISIBLE) {
						linearLayoutMore.setVisibility(View.GONE);

					}
				} catch (Exception e) {
					// TODO: handle exception
				}
			}
		});
		btnAudio.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				try {
					linearLayoutMore.setVisibility(View.GONE);

					// 显示dialog
					alertDialog = new AlertDialog.Builder(
							PrivateChatActivity.this).create();
					View view = View.inflate(PrivateChatActivity.this,
							R.layout.recorder, null);
					alertDialog.setView(view);
					alertDialog.show();

					// dialog有textView
					final TextView tvState = (TextView) view
							.findViewById(R.id.tv_recorder_state);

					// dialog上的button
					final Button btnStart = (Button) view
							.findViewById(R.id.btn_recorder_start);
					btnStart.setOnTouchListener(new OnTouchListener() {

						@Override
						public boolean onTouch(View v, MotionEvent event) {
							try {
								int action = event.getAction();
								switch (action) {
								case MotionEvent.ACTION_DOWN:// 按下
									tvState.setText("正在录音");
									mediaRecorder = new MediaRecorder();
									// 设置数据源
									mediaRecorder
											.setAudioSource(MediaRecorder.AudioSource.MIC);
									// 设置数据格式
									mediaRecorder
											.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
									mediaRecorder
											.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
									// 设置录音保存的文件
									mediaRecorder.setOutputFile(ChatUtil
											.getAudioFile().getAbsolutePath());

									mediaRecorder.prepare();
									mediaRecorder.start();

									break;

								case MotionEvent.ACTION_UP:// 松开
									alertDialog.dismiss();
									alertDialog = null;

									mediaRecorder.stop();
									mediaRecorder.reset();
									mediaRecorder.release();
									mediaRecorder = null;
									// 发送语音
									String body = ChatUtil.addAudioTag();
									sendMessage(body);
									break;
								case MotionEvent.ACTION_MOVE:// 移动

									break;
								}
							} catch (Exception e) {
								e.printStackTrace();
							}
							return false;
						}
					});

				} catch (Exception e) {
					e.printStackTrace();
				}

			}
		});

		btnImage.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				try {
					linearLayoutMore.setVisibility(View.GONE);

					boolean isUseMobile = false;
					if (isUseMobile) {
						// 打开系统图库
						Intent intent = new Intent(Intent.ACTION_PICK,
								MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
						startActivityForResult(intent, 0);
					} else {
						// 读sdcard;
						byte[] imageData = ChatUtil.getSdcardImage();
						String body = ChatUtil.addImageTag(imageData);
						sendMessage(body);
					}

				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
		gridView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				try {
					String faceFileName = (String) faceAdapter
							.getItem(position);
					String body = ChatUtil.addFaceTag(faceFileName);
					sendMessage(body);
					gridView.setVisibility(View.GONE);

				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
		btnFace.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				try {
					linearLayoutMore.setVisibility(View.GONE);

					if (gridView.getVisibility() == View.GONE) {
						gridView.setVisibility(View.VISIBLE);
					} else if (gridView.getVisibility() == View.VISIBLE) {
						gridView.setVisibility(View.GONE);

					}
				} catch (Exception e) {
					// TODO: handle exception
				}
			}
		});

		btnSend.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				try {
					if (mapView.getVisibility() == View.VISIBLE) {
						// 让框架去调实现类MyMapViewListener
						mapView.getCurrentMap();
					} else {
						String body = etBody.getText().toString();
						sendMessage(body);
						etBody.getText().clear();
					}

				} catch (Exception e) {
					e.printStackTrace();
				}
			}

		});

	}

	private void sendMessage(String body) {
		PrivateChatBiz biz = new PrivateChatBiz();
		biz.sendMessage(friendUser, body);
	}

	private void setupView() {
		// TODO Auto-generated method stub
		tvFriendName = (TextView) findViewById(R.id.tv_private_chat_friendName);
		etBody = (EditText) findViewById(R.id.et_private_chat_body);
		btnSend = (Button) findViewById(R.id.btn_private_chat_send);

		scrollView = (ScrollView) findViewById(R.id.scrollView1);
		linearLayout = (LinearLayout) findViewById(R.id.linearLayoutChatContent);

		// 表情
		btnFace = (Button) findViewById(R.id.btn_private_chat_face);
		gridView = (GridView) findViewById(R.id.gridView_face);
		faceAdapter = new FaceAdapter(this);
		gridView.setAdapter(faceAdapter);

		btnImage = (Button) findViewById(R.id.btn_private_chat_image);
		btnAudio = (Button) findViewById(R.id.btn_private_chat_audio);

		mapView = (MapView) findViewById(R.id.mapview_private_chat);
		// 显示放大缩小按钮
		mapView.setBuiltInZoomControls(true);

		// 设置地图显示级别4-19
		mapView.getController().setZoom(19);

		// 定位相关
		locationClient = new LocationClient(this);
		// 让百度地图开发框架中的接口指向实现类
		MyLocationListener myLocationListener = new MyLocationListener();
		locationClient.registerLocationListener(myLocationListener);
		// 设置client的属性
		LocationClientOption option = new LocationClientOption();
		// 打开gps
		option.setOpenGps(true);
		// 设置坐标类型 bd09ll,这个坐标类型是百度自己定义。
		option.setCoorType("bd09ll");
		// 设置隔多长时间得一次坐标
		// 时间少于1000,表示只得一次
		option.setScanSpan(1);

		locationClient.setLocOption(option);

		locationClient.start();

		// 向地图添加图片
		Drawable drawable = this.getResources().getDrawable(
				R.drawable.map_overlay_blue);
		myOverLay = new MyOverLay(drawable, mapView);

		// myOverLay放到mapView中
		mapView.getOverlays().add(myOverLay);

		// 让百度地图框架中的接口指向实现类
		MyMapViewListener mapViewListener = new MyMapViewListener();
		mapView.regMapViewListener(TApplication.bMapManager, mapViewListener);

		tvMore = (TextView) findViewById(R.id.tv_private_chat_more);
		btnMap = (Button) findViewById(R.id.btn_private_chat_map);
		linearLayoutMore = (LinearLayout) findViewById(R.id.linearLayoutMore);

	}

	public void showMessage(Context context, Message message) {
		String from = message.getFrom();
		String body = message.getBody();
		Log.i("PrivateChat", from   ":"   body);
		View view = null;
		// 判断这个message是我说的还是好友说的
		if (from.equals(TApplication.currentUser)) {
			// 我说的
			view = View.inflate(context, R.layout.right, null);
		} else {
			// 好友发过来
			view = View.inflate(context, R.layout.left, null);
		}
		// 得数据的类型
		int type = ChatUtil.getType(body);
		switch (type) {
		case ChatUtil.TYPE_MAP:

			// 可以用mapView
			ImageView ivMap = (ImageView) view.findViewById(R.id.iv_map);
			ivMap.setVisibility(View.VISIBLE);
			Bitmap bitmap2 = ChatUtil.getMap(body);
			ivMap.setImageBitmap(bitmap2);
			break;
		case ChatUtil.TYPE_AUDIO:
			// 显示播放Imageview
			final ImageView ivPlay = (ImageView) view
					.findViewById(R.id.iv_audio);
			ivPlay.setVisibility(View.VISIBLE);
			// 把数据保存到ivPlay
			ivPlay.setTag(body);

			// 单击播放imageView,进行播放
			ivPlay.setOnClickListener(new OnClickListener() {

				@Override
				public void onClick(View v) {
					try {
						// 得到数据
						String body = (String) ivPlay.getTag();
						// 播放
						ChatUtil.getAudio(body);

						MediaPlayer mediaPlayer = new MediaPlayer();
						// 数据要放到文件中
						// mnt/sdcard/tlbs1409/audio/1.mp3;
						String filePath = ChatUtil.getAudioFile()
								.getAbsolutePath();
						mediaPlayer.setDataSource(filePath);
						mediaPlayer.prepare();
						mediaPlayer.start();
					} catch (Exception e) {
						e.printStackTrace();
					}
				}
			});
			break;
		case ChatUtil.TYPE_IMAGE:
			// 返回的body原先放的是图的数据，优化后放的是图在sdcard上的文件名
			body = ChatUtil.saveImageToSdcard(body);
			Bitmap bitmap = ChatUtil.getImage(body);

			ImageView imageView = (ImageView) view.findViewById(R.id.iv_Image);
			imageView.setVisibility(View.VISIBLE);
			imageView.setImageBitmap(bitmap);

			break;
		case ChatUtil.TYPE_FACE:
			// 找到GifimageView
			GifImageView gifImageView = (GifImageView) view
					.findViewById(R.id.gif_face);
			gifImageView.setVisibility(View.VISIBLE);
			// 得表情的id
			int faceId = ChatUtil.getFaceId(body);

			gifImageView.setImageResource(faceId);
			break;
		case ChatUtil.TYPE_TEXT:
			// 找到TextView
			// 显示文本
			TextView tvText = (TextView) view.findViewById(R.id.tv_text);
			tvText.setVisibility(View.VISIBLE);
			tvText.setText(body);
			break;

		}

		// 把right.xml放到linearLayout
		linearLayout.addView(view);

		// message已经显示在屏幕上，防止再次显示

		long threadId = Thread.currentThread().getId();

		// 向上移
		handler.post(new Runnable() {

			@Override
			public void run() {
				Log.i("向上移", "2");
				long threadId = Thread.currentThread().getId();

				// TODO Auto-generated method stub
				try {
					// 向上移
					int scrollviewHeight = scrollView.getHeight();
					// 能得到，最后添加（刚刚）进去的textView
					// 解决方法，得高度向后退
					int linearLayoutHeight = linearLayout.getHeight();
					Log.i("向上移", scrollviewHeight   ","   linearLayoutHeight);
					if (linearLayoutHeight > scrollviewHeight) {
						int y = linearLayoutHeight - scrollviewHeight;
						scrollView.scrollTo(0, y);
					}
				} catch (Exception e) {
					e.printStackTrace();
				}

			}
		});
	}

	class ShowPrivateChatMessageReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context context, Intent intent) {
			try {
				// 根据好友的user从实体类中取到vector
				Vector<Message> vector = PrivateChatEntity.map.get(friendUser);
				// 显示数据
				if (vector != null) {
					// 动态删除控件
					// linearLayout.removeAllViews();

					for (Message message : vector) {
						// 保存到数据库
						MessageDAO messageDAO = new MessageDAO(context);
						messageDAO.insert(context, message);

						// 显示
						showMessage(context, message);
						// 移走
						vector.remove(message);
					}
				}
			} catch (Exception e) {
				e.printStackTrace();
			}

			Log.i("向上移", "3");

		}

	}

	class MyLocationListener implements BDLocationListener {

		@Override
		public void onReceiveLocation(BDLocation bdLocation) {
			// 坐标是4.9E-324，认为定位失败
			if (bdLocation.getLongitude() != 4.9E-324) {// 取到了正确坐标
				longitude = bdLocation.getLongitude();
				latitude = bdLocation.getLatitude();
			}

			// 让地图中心点是当前位置
			// geoPoint 代表的是一个坐标。
			GeoPoint geoPoint = new GeoPoint((int) (latitude * 1000000),
					(int) (longitude * 1000000));
			// animateTo以动画的方式移动到geoPoint
			mapView.getController().animateTo(geoPoint);
			Log.i("MyLocationListener", "longitude="   longitude   ",latitude="
					  latitude);

			// 在当前位置显示一张图 blue.png
			// OverlayItem相当于listView中的一行
			OverlayItem overlayItem = new OverlayItem(geoPoint, "当前位置", "当前位置");
			// myOverLay 相当于listView
			myOverLay.addItem(overlayItem);
			// listview ,adapter.notifyDataSetChanged
			mapView.refresh();
		}

		@Override
		public void onReceivePoi(BDLocation arg0) {
			// TODO Auto-generated method stub

		}

	}

	/**
	 * 在地图上添加的图的集合
	 * 
	 * @author tarena
	 * 
	 */
	class MyOverLay extends ItemizedOverlay {

		public MyOverLay(Drawable arg0, MapView arg1) {
			super(arg0, arg1);
			// TODO Auto-generated constructor stub
		}

		/**
		 * 在地图上单击
		 */
		@Override
		public boolean onTap(GeoPoint geoPoint, MapView mapView) {
			// 你在那单击，就在那显示图片
			try {
				// 移走以前加的图
				myOverLay.removeAll();

				OverlayItem overlayItem = new OverlayItem(geoPoint, "选中的位置",
						"选中的位置");
				myOverLay.addItem(overlayItem);
				mapView.refresh();
			} catch (Exception e) {
				e.printStackTrace();
			}

			return super.onTap(geoPoint, mapView);
		}

	}

	class MyMapViewListener implements MKMapViewListener {

		@Override
		public void onClickMapPoi(MapPoi arg0) {
			// TODO Auto-generated method stub

		}

		/**
		 * 百度地图框架调
		 */
		@Override
		public void onGetCurrentMap(Bitmap bitmap) {
			try {
				ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
				bitmap.compress(CompressFormat.PNG, 30, outputStream);

				byte[] data = outputStream.toByteArray();
				String body = ChatUtil.addMapTag(data);
				sendMessage(body);
				mapView.setVisibility(View.GONE);
			} catch (Exception e) {
				// TODO: handle exception
			}
		}

		@Override
		public void onMapAnimationFinish() {
			// TODO Auto-generated method stub

		}

		@Override
		public void onMapLoadFinish() {
			// TODO Auto-generated method stub

		}

		@Override
		public void onMapMoveFinish() {
			// TODO Auto-generated method stub

		}

	}
}