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android 入门-Service实时向Activity通过BroadcastReceiver传递数据
引文：
http://www.cnblogs.com/linjiqin/p/3147764.html
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".EX0315" > <TextView android:layout_width="100dp" android:layout_height="wrap_content" android:id="@+id/Ex0315TextView" android:layout_marginLeft="20dp" android:layout_marginTop="0dp" android:text="@string/hello_world" /> <Button android:id="@+id/Ex0315StartButton" android:layout_width="100dp" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:layout_marginTop="40dp" android:text="@string/ex0315Startbutton" /> <Button android:id="@+id/Ex0315SendButton" android:layout_width="100dp" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:layout_marginTop="110dp" android:text="@string/ex0315Sendbutton" /></RelativeLayout>
package com.iruisi.service;import android.app.Service;import android.content.Intent;import android.os.Handler;import android.os.IBinder;import android.util.Log;public class Ex0315Service extends Service { private static final String TAG = "MyService"; private Handler mHandler=new Handler(); private int mCount=0; private Runnable mRunnable = new Runnable() { @Override public void run() { mCount++; sendMsg2Activity("start send to service"); Log.i("hippo","计算器"+Integer.toString(mCount)); mHandler.postDelayed(mRunnable,1000); } }; @Override public void onCreate() { super.onCreate(); Log.e(TAG, "start onCreate~~~"); //开启服务 延时1s mHandler.postDelayed(mRunnable,1000); } private void sendMsg2Activity(String msg){ //发送广播 Intent intent=new Intent(); intent.putExtra("count", mCount); intent.setAction("com.iruisi.service.Ex0315Service"); sendBroadcast(intent); }@Override public IBinder onBind(Intent intent) { return null; }@Override public void onDestroy() { mHandler.removeCallbacks(mRunnable); super.onDestroy(); }@Override public boolean onUnbind(Intent intent) { // TODO Auto-generated method stub return super.onUnbind(intent); }@Override public void onRebind(Intent intent) { // TODO Auto-generated method stub super.onRebind(intent); }@Override public int onStartCommand(Intent intent, int flags, int startId) { // TODO Auto-generated method stub return super.onStartCommand(intent, flags, startId);}}
package com.example.hellowrold;import com.example.hellowrold.R.id;import com.iruisi.service.Ex0315Service;import android.R.string;import android.os.Bundle;import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.view.Menu;import android.view.View;import android.widget.Button;import android.widget.TextView;public class EX0315 extends Activity { private TextView mTextView; private Button startButton; private Button sendbuButton; private Ex0315ServiceReceiver receiver=null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_ex0315); mTextView=(TextView)findViewById(id.Ex0315TextView); startButton=(Button)findViewById(id.Ex0315StartButton); startButton.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { Intent sIntent=new Intent(EX0315.this,Ex0315Service.class); //sIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startService(sIntent); receiver=new Ex0315ServiceReceiver(); IntentFilter mIntentFilter=new IntentFilter(); mIntentFilter.addAction("com.iruisi.service.Ex0315Service"); EX0315.this.registerReceiver(receiver, mIntentFilter); } }); sendbuButton=(Button)findViewById(id.Ex0315SendButton); sendbuButton.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { Intent sIntent=new Intent(EX0315.this,Ex0315Service.class); stopService(sIntent); } }); mTextView.setText("hahh"); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.ex0315, menu); return true; } public class Ex0315ServiceReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { Bundle mBundle=intent.getExtras(); int count=mBundle.getInt("count"); mTextView=(TextView)findViewById(id.Ex0315TextView); mTextView.setText(String.valueOf(count)); } } }
在manifest里添加 <service android:name="com.iruisi.service.Ex0315Service" android:exported="false" > </service>
这个服务是在另外一个包里
点击发送信息到服务器按钮，其实是 "停止服务"命名错误，点击后将停止。
注意的是 在广播里重新要获取一下TextView 对象。才能显示。
android 入门-Service实时向Activity通过BroadcastReceiver传递数据
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