Service（一）----->简单计算

xml:

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     tools:context="com.zzw.server.MainActivity" >
 6
 7     <EditText
 8         android:id="@+id/editText1"
 9         android:layout_width="wrap_content"
10         android:layout_height="wrap_content"
11         android:layout_alignParentTop="true"
12         android:layout_centerHorizontal="true"
13         android:layout_marginTop="58dp"
14         android:ems="10"
15         android:inputType="number" >
16
17         <requestFocus />
18     </EditText>
19
20     <EditText
21         android:id="@+id/editText2"
22         android:layout_width="wrap_content"
23         android:layout_height="wrap_content"
24         android:layout_alignLeft="@+id/editText1"
25         android:layout_below="@+id/editText1"
26         android:layout_marginTop="68dp"
27         android:ems="10"
28         android:inputType="number" />
29
30     <Button
31         android:id="@+id/button"
32         android:layout_width="wrap_content"
33         android:layout_height="wrap_content"
34         android:layout_alignParentBottom="true"
35         android:layout_centerHorizontal="true"
36         android:layout_marginBottom="85dp"
37         android:text="相加" />
38
39 </RelativeLayout>

activity_main.xml

MainActivity:

 1 package com.zzw.server;
 2
 3 import android.app.Activity;
 4 import android.content.Intent;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.view.View.OnClickListener;
 8 import android.widget.EditText;
 9
10 public class MainActivity extends Activity {
11     EditText et1, et2;
12
13     @Override
14     protected void onCreate(Bundle savedInstanceState) {
15         super.onCreate(savedInstanceState);
16         setContentView(R.layout.activity_main);
17         findViewById(R.id.button).setOnClickListener(new OnClickListener() {
18
19             @Override
20             public void onClick(View v) {
21                 init();
22             }
23         });
24     }
25
26     public void init() {
27         et1 = (EditText) findViewById(R.id.editText1);
28         et2 = (EditText) findViewById(R.id.editText2);
29         Intent intent = new Intent(MainActivity.this, TestServer.class);
30         int a = Integer.parseInt(et1.getText().toString());
31         int b = Integer.parseInt(et2.getText().toString());
32         int num[] = { a, b };
33         intent.putExtra(Canshu.KEY, num);
34         startService(intent);//开始
35
36     }
37
38     @Override
39     protected void onDestroy() {
40         super.onDestroy();
41         Intent intent = new Intent(MainActivity.this, TestServer.class);
42         stopService(intent);//结束
43     }
44
45 }

Server:

 1 package com.zzw.server;
 2
 3 import android.app.Service;
 4 import android.content.Intent;
 5 import android.os.IBinder;
 6 import android.util.Log;
 7 import android.widget.Toast;
 8
 9 public class TestServer extends Service {
10     //开始只运行一次
11     @Override
12     public void onCreate() {
13         Log.d("=========", "我开始了");
14         super.onCreate();
15     }
16
17     @Override
18     public int onStartCommand(Intent intent, int flags, int startId) {
19         int num[] = intent.getIntArrayExtra(Canshu.KEY);
20         int sum = num[0] + num[1];
21         Toast.makeText(TestServer.this, sum + "", 1).show();
22         return super.onStartCommand(intent, flags, startId);
23     }
24
25     @Override
26     public IBinder onBind(Intent intent) {
27         // TODO Auto-generated method stub
28         return null;
29     }
30
31     @Override
32     public void onDestroy() {
33         Log.d("======", "我被干掉了");
34         super.onDestroy();
35     }
36
37 }

AndroidManifest.xml：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.zzw.server"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6
 7     <uses-sdk
 8         android:minSdkVersion="14"
 9         android:targetSdkVersion="21" />
10
11     <application
12         android:allowBackup="true"
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name"
15         android:theme="@style/AppTheme" >
16         <activity
17             android:name=".MainActivity"
18             android:label="@string/app_name" >
19             <intent-filter>
20                 <action android:name="android.intent.action.MAIN" />
21
22                 <category android:name="android.intent.category.LAUNCHER" />
23             </intent-filter>
24         </activity>
25         <!-- 注册服务器 -->
26         <service android:name="com.zzw.server.TestServer" >
27         </service>
28     </application>
29
30 </manifest>