Android 消息传递之Bundle的使用——实现object对象传输

关山初度尘未洗，策马扬鞭再奋蹄！这篇文章主要讲述Android 消息传递之Bundle的使用——实现object对象传输相关的知识，希望能为你提供帮助。
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。
【Android 消息传递之Bundle的使用——实现object对象传输】首先创建一个个类，什么都行。例如：

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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 10String id = ""; 11String url = ""; 12String content = ""; 13String type = ""; 14 15public String getId() { 16return id; 17} 18 19public void setId(String id) { 20this.id = id; 21} 22 23public String getUrl() { 24return url; 25} 26 27public void setUrl(String url) { 28this.url = url; 29} 30 31public String getContent() { 32return content; 33} 34 35public void setContent(String content) { 36this.content = content; 37} 38 39public String getType() { 40return type; 41} 42 43public void setType(String type) { 44this.type = type; 45} 46 47 }

ADInfo创建一个Activity父类：

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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。

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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 { 15private ArrayList< CustomActivity> activityList; 16 17private Bundle bundle; 18private MyHandler(){ 19activityList = new ArrayList< CustomActivity> (); 20} 21 22private static MyHandler instance = null; 23 24@Override 25public void handleMessage(Message msg) { 26// TODO Auto-generated method stub 27super.handleMessage(msg); 28bundle = msg.getData(); 29try { 30if(activityList.size()> 0){ 31for(CustomActivity customActivity:activityList){ 32//向每个customActivity内发送消息 33customActivity.recvMessageFormHandler(bundle); 34} 35} 36} catch (Exception e) { 37// TODO: handle exception 38} 39} 40 41public static MyHandler getInstance(){ 42if(instance == null){ 43instance = new MyHandler(); 44} 45return instance; 46} 47public voidregisterActivity(CustomActivity activity) 48{ 49Log.d("HANDLER", "add "+activity.toString()); 50activityList.add(activity); 51} 52public void unRegisterActivity(CustomActivity activity){ 53Log.d("clientApp","remove"+activity.toString()); 54activityList.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 12private 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*/ 24public static void ActivityHandlerMsg(final String SerializableKey, final Object obj) { 25new Thread(new Runnable() { 26@Override 27public 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*/ 32MyHandler myHandler = MyHandler.getInstance(); 33message = new Message(); 34Bundle bundle = new Bundle(); 35bundle.putSerializable(SerializableKey, (Serializable) obj); 36message.setData(bundle); 37myHandler.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：

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

ServerActivity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 { 14private Button sendMsg1, SendMsg2; 15private TextView showMsg; 16 17@Override 18protected void onCreate(Bundle savedInstanceState) { 19super.onCreate(savedInstanceState); 20setContentView(R.layout.main_activity); 21initView(); 22initData(); 23initOnClick(); 24} 25 26@Override 27protected void initView() { 28sendMsg1 = (Button) findViewById(R.id.sendMsg1); 29sendMsg2 = (Button) findViewById(R.id.sendMsg2); 30showMsg = (TextView) findViewById(R.id.showMsg); 31} 32 33@Override 34protected void initData() { 35 36} 37 38@Override 39protected void initOnClick() { 40sendMsg1.setOnClickListener(this); 41sendMsg2.setOnClickListener(this); 42back.setOnClickListener(this); 43} 44 45@Override 46public void recvMessageFormHandler(Bundle bundle) { 47ADInfo adInfo = new ADInfo(); 48 49adInfo = (ADInfo) bundle.getSerializable("ACTI"); 50if (adInfo != null) { 51showMsg.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*/ 58Appinfo adInfo1 = new ADInfo(); 59adInfo1 = (ADInfo) bundle.getSerializable("ACTI"); 60if (adInfo1 != null) { 61showMsg.setText(adInfo.getUrl() + ""); 62} 63} 64 65@Override 66public void onClick(View view) { 67switch (view.getId()) { 68case R.id.sendMsg1: 69{ ADInfo adInfo = new ADInfo(); 70adInfo.setId("xxxxxx"); 71adInfo.setUrl("xxxxxxx"); 72....... 73binder.sendMsgA(adInfo); } 74break; 75case R.id.sendMsg2:{ 76ADInfo adInfo = new ADInfo(); 77adInfo.setId("1111111"); 78adInfo.setUrl("1111111111"); 79....... 80binder.sendMsgB(adInfo); } 81break; 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！