Android 消息传递之Bundle的使用——实现object对象传输（二）

上面学习了线程通过Massage发送字符串消息，Handler接收字符串消息，这样的形式来更新ui，接下来，一起分享怎么把一个对象利用消息机制发送出去，让主线程接收来更新ui。

下面就利用一个服务Server，Handler，Activity，和一个对象类分享具体实现情况。

首先创建一个个类，什么都行。例如：

 1 package dfrz.me.android.pcfileshare.bean;
 2 
 3 import java.io.Serializable;
 4 
 5 /**
 6  * 描述：广告信息</br>
 7  */
 8 public class ADInfo implements Serializable{
 9     
10     String id = "";
11     String url = "";
12     String content = "";
13     String type = "";
14 
15     public String getId() {
16         return id;
17     }
18 
19     public void setId(String id) {
20         this.id = id;
21     }
22 
23     public String getUrl() {
24         return url;
25     }
26 
27     public void setUrl(String url) {
28         this.url = url;
29     }
30 
31     public String getContent() {
32         return content;
33     }
34 
35     public void setContent(String content) {
36         this.content = content;
37     }
38 
39     public String getType() {
40         return type;
41     }
42 
43     public void setType(String type) {
44         this.type = type;
45     }
46 
47 }

ADInfo

创建一个Activity父类：

import java.util.ArrayList;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.Toast;

import dfrz.me.android.pcfileshare.service.MyHandler;
import dfrz.me.android.pcfileshare.service.MyService;

public abstract class CustomActivity extends Activity {

    public static final int LENGTH_LONG = 1;
    public static final int LENGTH_SHORT = 0;
    public static String LOGCAT_KEY = "folder";
    public static ArrayList<CustomActivity> activityList = new ArrayList<CustomActivity>();
    public InputMethodManager inputMethodManager;
    protected MyService.MyBinder binder = null;

    private ServiceConnection connection = new ServiceConnection() {
        @Override
        public void onServiceDisconnected(ComponentName name) {
            Log.d("file", "privateChat-->onServiceDisconnected");
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            Log.d("file", "privateChat-->onServiceConnected");
            binder = (MyService.MyBinder) service;
        }
    };

    public void toast(String str,int i){
        Toast.makeText(getApplicationContext(),str,i).show();
    }

    /**
     * onCreate方法中绑定服务。
     * 添加接口等等一些操作。
     * @param savedInstanceState
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //getSupportActionBar().hide();
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        // 启动activity时不自动弹出软键盘
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
        //获取系统键盘对象
        inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        //将这个Activity加入到消息接收队列中
        MyHandler.getInstance().registerActivity(this);
       
        activityList.add(this);
        try {
            while (!bindService(new Intent(this, MyService.class), connection, BIND_AUTO_CREATE)) ;

        } catch (Exception e) {
            Toast.makeText(this, "服务器连接失败！", Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        try {
            //移除队列
            MyHandler.getInstance().unRegisterActivity(this);
            activityList.remove(this);
            unbindService(connection);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void finishAll() {
        for (Activity activity : activityList) {
            if (!activity.isFinishing()) {
                activity.finish();
            }
        }
    }

    /**
     * 初始化UI
     */
    protected abstract void initView();

    /**
     * 初始化数据
     */
    protected abstract void initData();

    /**
     * 监听事件
     */

    protected abstract void initOnClick();

    /**
     * 接收消息
     * @param bundle
     */
    public abstract void recvMessageFormHandler(Bundle bundle);

}

Activity父类

编写自己的Handle消息接收，和广播到每个活动界面上，前提是每个Activity都要继承父类，并实现接收消息的方法。

 1  
 2 import android.os.Bundle;
 3 import android.os.Handler;
 4 import android.os.Message;
 5 import android.util.Log;
 6 
 7 import java.util.ArrayList;
 8 
 9 import dfrz.me.android.pcfileshare.base.CustomActivity;
10 
11 /**
12  * Created by Administrator on 2016/11/18.
13  */
14 public class MyHandler extends Handler {
15     private ArrayList<CustomActivity> activityList;
16 
17     private Bundle bundle;
18     private MyHandler(){
19         activityList = new ArrayList<CustomActivity>();
20     }
21 
22     private static MyHandler instance = null;
23 
24     @Override
25     public void handleMessage(Message msg) {
26         // TODO Auto-generated method stub
27         super.handleMessage(msg);
28         bundle = msg.getData();
29         try {
30             if(activityList.size()>0){
31                 for(CustomActivity customActivity:activityList){
32                     //向每个customActivity内发送消息
33                     customActivity.recvMessageFormHandler(bundle);
34                 }
35             }
36         } catch (Exception e) {
37             // TODO: handle exception
38         }
39     }
40 
41     public static MyHandler getInstance(){
42         if(instance == null){
43             instance = new MyHandler();
44         }
45         return instance;
46     }
47     public void  registerActivity(CustomActivity activity)
48     {
49         Log.d("HANDLER", "add "+activity.toString());
50         activityList.add(activity);
51     }
52     public void unRegisterActivity(CustomActivity activity){
53         Log.d("clientApp","remove"+activity.toString());
54         activityList.remove(activity);
55     }
56 }

MyHandler

为了方便发送不同的对象消息数据，封装发送消息方法：

 1 import android.os.Bundle;
 2 import android.os.Message;
 3 
 4 import java.io.Serializable;
 5 
 6 /**
 7  * Created by Administrator on 2017/1/16.
 8  */
 9 
10 public class SendHandlerMsg {
11 
12     private static Message message;
13 
14     /**
15      * 建立bundle 向 fragment 中发送消息
16      *
17      * @param SerializableKey 系列化键值
18      * @param obj 消息内容，传入时必须先系列化对象，不然数据发送不出去，会导致堵塞异常
19      * 建立bundle 向 Activity 中发送消息
20      *
21      * @param SerializableKey 系列化键值
22      * @param obj             消息内容
23      */
24     public static void ActivityHandlerMsg(final String SerializableKey, final Object obj) {
25        new Thread(new Runnable() {
26            @Override
27            public void run() {
28                /**
29                 * myHandler 向CustomActivity中发送消息
30                 * MyHandler myHandler = MyHandler.getInstance();这句
　　　　　　　　　　　*必须放在线程内部，如果放在外面会导致getInstance()，Handler实类为空，Handler线程异常
31                 */
32                MyHandler myHandler = MyHandler.getInstance();
33                message = new Message();
34                Bundle bundle = new Bundle();
35                bundle.putSerializable(SerializableKey, (Serializable) obj);
36                message.setData(bundle);
37               myHandler.sendMessage(message);
38            }
39        }).start();
40 
41     }
42 
43 }

下面用服务简单描述发送消息的过程：

 1 package dfrz.me.android.pcfileshare.service;
 2 
 3 import android.app.Service;
 4 import android.content.Intent;
 5 import android.os.Binder;
 6 import android.os.IBinder;
 7 import android.os.Message;
 8 import android.util.Log;
 9 
10 public class MyService extends Service {
11 
12     private MyBinder mybinder = new MyBinder();
13     // 得到Handler实类
14     MyHandler myHandler = MyHandler.getInstance();
15 
16     public class MyBinder extends Binder {
17         /**
18          * 消息发送函数
19          * @param chatMsgEntity
20          */
21         public void sendMsg(final ADInfo data) {
22         new Thread(new Runnable() {
23             @Override
24             public void run() {
25                 // TODO Auto-generated method stub
26                  ADInfo adInfo = new ADInfo();
27                  adInfo.setId("xxxxxx");
28                  adInfo.setUrl("xxxxxxx");
29                  .......
30                  //发送消息到 Activity
31                 SendHandlerMsg.ActivityHandlerMsg("ACT",adInfo);
32             }
33         }).start();    
34         }
35 
36         /**
37          * 添加其他键值数据
38          * @param data
39          */
40         public void sendMsg(final ADInfo data) {
41             new Thread(new Runnable() {
42                 @Override
43                 public void run() {
44                     // TODO Auto-generated method stub
45                      ADInfo adInfo = new ADInfo();
46                      adInfo.setId("xxxxxx");
47                      adInfo.setUrl("xxxxxxx");
48                      .......
49                      //发送消息到 Activity
50                     SendHandlerMsg.ActivityHandlerMsg("ACTIVITY",adInfo);
51                 }
52             }).start();    
53             }
54 
55     }
56 
57     public MyService() {
58     }
59 
60     @Override
61     public IBinder onBind(Intent intent) {
62         return mybinder;
63     }
64 
65     @Override
66     public void onCreate() {
67 
68     }
69 
70 }

Server

Activity代码展示：

 1 import android.content.ActivityNotFoundException;
 2 import android.content.Intent;
 3 import android.net.Uri;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.widget.Button;
 7 import android.widget.TextView;
 8 import android.widget.Toast;
 9 
10 import dfrz.me.android.pcfileshare.R;
11 import dfrz.me.android.pcfileshare.base.CustomActivity;
12 
13 public class MainActivity extends CustomActivity implements View.OnClickListener {
14     private Button sendMsg1, SendMsg2;
15     private TextView showMsg;
16 
17     @Override
18     protected void onCreate(Bundle savedInstanceState) {
19         super.onCreate(savedInstanceState);
20         setContentView(R.layout.main_activity);
21         initView();
22         initData();
23         initOnClick();
24     }
25 
26     @Override
27     protected void initView() {
28         sendMsg1 = (Button) findViewById(R.id.sendMsg1);
29         sendMsg2 = (Button) findViewById(R.id.sendMsg2);
30         showMsg = (TextView) findViewById(R.id.showMsg);
31     }
32 
33     @Override
34     protected void initData() {
35 
36     }
37 
38     @Override
39     protected void initOnClick() {
40         sendMsg1.setOnClickListener(this);
41         sendMsg2.setOnClickListener(this);
42         back.setOnClickListener(this);
43     }
44 
45     @Override
46     public void recvMessageFormHandler(Bundle bundle) {
47         ADInfo adInfo = new ADInfo();
48 
49         adInfo = (ADInfo) bundle.getSerializable("ACTI");
50         if (adInfo != null) {
51             showMsg.setText(adInfo.getUrl() + "");
52         }
53         // 这里可新new 一个实例接收消息
54         /**
55          * ChatMsg chatMsg = new ChatMsg(); chatMsg = (ChatMsg)
56          * bundle.getSerializable("CHAT"); 先判断chatMsg非空则接收到消息可更新UI
57          */
58         Appinfo adInfo1 = new ADInfo();
59         adInfo1 = (ADInfo) bundle.getSerializable("ACTI");
60         if (adInfo1 != null) {
61             showMsg.setText(adInfo.getUrl() + "");
62         }
63     }
64 
65     @Override
66     public void onClick(View view) {
67         switch (view.getId()) {
68             case R.id.sendMsg1:
69                 { ADInfo adInfo = new ADInfo();
70                  adInfo.setId("xxxxxx");
71                  adInfo.setUrl("xxxxxxx");
72                  .......
73                 binder.sendMsgA(adInfo);}
74                 break;
75             case R.id.sendMsg2:{
76                 ADInfo adInfo = new ADInfo();
77                  adInfo.setId("1111111");
78                  adInfo.setUrl("1111111111");
79                  .......
80                binder.sendMsgB(adInfo);}
81                 break;
82         }
83     }
84 
85 }

效果怎么样，这就不展示了，仅供参看，如有问题可提出来大家解决，有更好的建议还请各位大神多多指点，毕竟我还新手。thank you！

posted @ 2017-01-16 18:50 冰世纪阅读(1672) 评论(0) 编辑收藏举报

冰世纪

Android 消息传递之Bundle的使用——实现object对象传输（二）

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