Android Service delivers data to activity in real time

Demonstrate a case with the following requirements:
Create a thread in the service component that is used to produce numeric values that automatically add 1 every 1 seconds and then display the updated values in real time on the interface.

The steps are as follows:
1, a new Android project, named as demo.
2, create a new service class, for real-time production of numerical values for the interface real-time display.

Package com.ljq.activity; import Android.app.service;import android.content.intent;import android.os.IBinder; Import Android.util.Log;  Public classCountservice extends Service {Private intCount =0; PrivateBoolean threaddisable=false; @Override Public voidonCreate () {super.oncreate (); NewThread (NewRunnable () {@Override Public voidrun () { while(!threaddisable) {     Try{Thread.Sleep ( +); } Catch(interruptedexception e) {e.printstacktrace (); } Count++; LOG.V ("Countservice","Count is"+count); //Send broadcastIntent intent=NewIntent (); Intent.putextra ("Count", Count); Intent.setaction ("Com.ljq.activity.CountService");    Sendbroadcast (Intent);  }}). Start (); } @Override Publicibinder onbind (Intent Intent) {return NULL; } @Override Public voidOnDestroy () {Super.ondestroy (); Count=0; Threaddisable=true; LOG.V ("Countservice","On destroy"); }  }

3. Create a new activity class to display the data.

Package com.ljq.activity; import 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.widget.button;import Android.widget.EditText;  Public classMainactivity extends Activity {PrivateEditText edittext=NULL; PrivateMyreceiver receiver=NULL; @Override Public voidonCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);                 Setcontentview (R.layout.main); EditText=(EditText) Findviewbyid (R.id.edittext); //Start the serviceStartService (NewIntent (mainactivity. This, Countservice.class)); //registering a broadcast receiverReceiver=NewMyreceiver (); Intentfilter Filter=NewIntentfilter (); Filter.addaction ("Com.ljq.activity.CountService"); Mainactivity. This. Registerreceiver (Receiver,filter); } @Overrideprotected voidOnDestroy () {//End ServiceStopService (NewIntent (mainactivity. This, Countservice.class));   Super.ondestroy (); }         /** * Get Broadcast data * * @author Jiqinlin **/     Public classMyreceiver extends Broadcastreceiver {@Override Public voidOnReceive (Context context, Intent Intent) {Bundle bundle=Intent.getextras (); intCount=bundle.getint ("Count"); Edittext.settext (Count+""); }    }             }

4. Main.xml Layout file

<?xml version="1.0"encoding="Utf-8"? ><linearlayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="Vertical"Android:layout_width="fill_parent"Android:layout_height="fill_parent"> <edittext android:layout_width="fill_parent"Android:layout_height="wrap_content"android:cursorvisible="false"android:editable="false"Android:id="@+id/edittext"/> </LinearLayout>

5. manifest file

<?xml version="1.0"encoding="Utf-8"? ><manifest xmlns:android="http://schemas.android.com/apk/res/android" Package="com.ljq.activity"Android:versioncode="1"Android:versionname="1.0"> <application android:icon="@drawable/icon"Android:label="@string/app_name"> <activity android:name=". Mainactivity"Android:label="@string/app_name"> <intent-filter> <action android:name="Android.intent.action.MAIN"/> <category android:name="Android.intent.category.LAUNCHER"/> </intent-filter> </activity> <service android:name =". Countservice"/> </application> <uses-sdk android:minsdkversion="7"/> </manifest>

The effect is as follows:

Android Service delivers data to activity in real time