Activity和Service交互(service与activity数据交互)

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Activity和Service交互

本人常用的三种，不足之处希望大家多多提出宝贵意见

第一种Handler:

Activity

import android.annotation.SuppressLint;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ProgressBar;import com.service.MsghdSeceiver;public class MainHandlerActivity extends Activity { private ProgressBar mProgressBar; private Button btn; private Intent intent; @SuppressLint("HandlerLeak") Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { if (msg.what == 0x) { // 拿到进度，更新UI int progress = (int) msg.obj; mProgressBar.setProgress(progress); } }; }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_handler); mProgressBar = (ProgressBar) findViewById(R.id.pb_mainhd_jindu); btn = (Button) findViewById(R.id.btn_mainhd_btn); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); MsghdSeceiver.setHandler(handler); // 启动服务 intent = new Intent("com.example.communication.MSG_ACTIONhd"); } @Override protected void onResume() { super.onResume(); setListener(); } private void setListener() { btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { startService(intent); } }); } @Override protected void onDestroy() { // 停止服务 stopService(intent); super.onDestroy(); }}

Service

import android.app.Service;import android.content.Intent;import android.os.Handler;import android.os.IBinder;import android.os.Message;public class MsghdSeceiver extends Service { /** * 进度条的最大&#; */ public static final int MAX_PROGRESS = ; /** * 进度条的进度&#; */ private int progress = 0; private static Handler handlers; public static void setHandler(Handler handler) { handlers = handler; } @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); startDownLoad(); } /** * 模拟下载任务，每秒钟更新一次 */ public void startDownLoad() { new Thread(new Runnable() { @Override public void run() { while (progress < MAX_PROGRESS) { progress &#;= ; Message message = new Message(); message.what = 0x; message.obj = progress; handlers.sendMessage(message); // Message.obtain(handlers, 0x, progress).sendToTarget(); try { Thread.sleep(); } catch (InterruptedException e) { e.printStackTrace(); } } } }).start(); } @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; }}

注意

第二种接口:

Activity

import android.app.Activity;import android.content.ComponentName;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.IBinder;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ProgressBar;import com.OnProgressListener;import com.service.MsgService;public class MainActivity extends Activity { private MsgService msgService; private ProgressBar mProgressBar; private Button btn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mProgressBar = (ProgressBar) findViewById(R.id.pb_main_jindu); btn = (Button) findViewById(R.id.btn_main_btn); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); // 绑定Service 需要注册<action // android:name="com.example.communication.MSG_ACTION" /> Intent intent = new Intent("com.example.communication.MSG_ACTION"); bindService(intent, conn, BIND_AUTO_CREATE); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); setListener(); } private void setListener() { // TODO Auto-generated method stub btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub msgService.startDownLoad(); } }); } ServiceConnection conn = new ServiceConnection() { @Override public void onServiceDisconnected(ComponentName arg0) { // TODO Auto-generated method stub msgService = null; } @Override public void onServiceConnected(ComponentName name, IBinder service) { // 返回一个MsgService对象 msgService = ((MsgService.MsgBinder) service).getService(); // 注册回调接口来接收下载进度的变化 msgService.setOnProgressListener(new OnProgressListener() { @Override public void onProgress(int progress) { // TODO Auto-generated method stub mProgressBar.setProgress(progress); } }); } }; @Override protected void onDestroy() { unbindService(conn); super.onDestroy(); }}

Service

import android.app.Service;import android.content.Intent;import android.os.Binder;import android.os.IBinder;import com.OnProgressListener;public class MsgService extends Service { /** * 进度条的最大&#; */ public static final int MAX_PROGRESS = ; /** * 进度条的进度&#; */ private int progress = 0; /** * 更新进度的回调接口 */ private OnProgressListener onProgressListener; /** * 注册回调接口的方法，供外部调用 * * @param onProgressListener */ public void setOnProgressListener(OnProgressListener onProgressListener) { this.onProgressListener = onProgressListener; } /** * 增加get()方法，供Activity调用 * * @return 下载进度 */ public int getProgress() { return progress; } /** * 模拟下载任务，每秒钟更新一次 */ public void startDownLoad() { new Thread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub while (progress < MAX_PROGRESS) { progress &#;= ; // 进度发生变化通知调用方 if (onProgressListener != null) { onProgressListener.onProgress(progress); } try { Thread.sleep(); } catch (InterruptedException e) { e.printStackTrace(); } } } }).start(); } /** * 返回一个Binder对象 */ @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return new MsgBinder(); } public class MsgBinder extends Binder { /** * 获取当前Service的实例 * * @return */ public MsgService getService() { return MsgService.this; } }}

接口

public interface OnProgressListener { void onProgress(int progress);}

注意

第三种广播:

Activityimport android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ProgressBar;public class MainGbActivity extends Activity { private ProgressBar mProgressBar; private Button btn; private Intent mIntent; private MsgReceiver msgReceiver; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_gb); mProgressBar = (ProgressBar) findViewById(R.id.pb_maingb_jindu); btn = (Button) findViewById(R.id.btn_maingb_btn); } @Override protected void onStart() { super.onStart(); // 启动服务 mIntent = new Intent("com.example.communication.MSG_ACTIONs"); // 动态注册广播接收器 msgReceiver = new MsgReceiver(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction("com.example.communication.RECEIVER"); registerReceiver(msgReceiver, intentFilter); } @Override protected void onResume() { super.onResume(); setListener(); } private void setListener() { btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { startService(mIntent); } }); } /** * 广播接收器 * */ public class MsgReceiver extends BroadcastReceiver { @Override public void onReceive(Context arg0, Intent intent) { // 拿到进度，更新UI int progress = intent.getIntExtra("progress", 0); mProgressBar.setProgress(progress); } } @Override protected void onDestroy() { super.onDestroy(); // 停止服务 stopService(mIntent); // 注销广播 unregisterReceiver(msgReceiver); }}

Service

import android.app.Service;import android.content.Intent;import android.os.IBinder;public class MsggbSeceiver extends Service { /** * 进度条的最大&#; */ public static final int MAX_PROGRESS = ; /** * 进度条的进度&#; */ private int progress = 0; private Intent intent = new Intent("com.example.communication.RECEIVER"); /** * 模拟下载任务，每秒钟更新一次 */ public void startDownLoad() { new Thread(new Runnable() { @Override public void run() { while (progress < MAX_PROGRESS) { progress &#;= ; // 发送Action为com.example.communication.RECEIVER的广播 intent.putExtra("progress", progress); sendBroadcast(intent); try { Thread.sleep(); } catch (InterruptedException e) { e.printStackTrace(); } } } }).start(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { // TODO Auto-generated method stub startDownLoad(); return super.onStartCommand(intent, flags, startId); } @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; }}

注意

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标签: service与activity数据交互

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