Android(安卓)service

1. 定义自已的service:

public class myService extends Service{
MediaPlayer player;
@Override
public IBinder onBind (Intent intent){
return null;
}
@Override
public void onCreate (){
Toast.makeText(this, "It is come from Service", Toast.LENGTH_LONG).show();

try{
player = new MediaPlayer();
player.setDataSource("//sdcard//44.mp3");
player.prepare();
}
catch (Exception e) {
Log.i("myService", e.toString());
}
}
@Override
public void onStart (Intent intent, int startId){
try{
player.start();
}
catch (Exception e) {
Log.i("myService", e.toString());
}
}
@Override
public void onDestroy (){
try{
Toast.makeText(this, "Stop", Toast.LENGTH_SHORT);
player.stop();
}
catch (Exception e) {
Log.i("myService", e.toString());
}
}
}

2. 注册Service:

3. 启动Service 和停止：

Button start = (Button)findViewById(R.id.begin);
start.setOnClickListener(this);
Button stop = (Button)findViewById(R.id.stop);
stop.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.begin:
startService(new Intent(this, myService.class));
break;
case R.id.stop:
stopService(new Intent(this, myService.class));
break;
}
}

进程之间

src
└── com
└── fly
├── IRemoteService.aidl
├── RemoteServiceActivity.java
└── RemoteService.java

IRemoteService.aidl

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package com.fly;
interface IRemoteService {
int getCount();
}

RemoteServiceActivity.java

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package com.fly;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class RemoteServiceActivity extends Activity {
private static final String TAG = "U0fly RemoteServiceActivity";
private Button bnStart, bnStop;
private TextView text1;
private int count;
private boolean isBound;
private ServiceConnection serviceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
// TODO Auto-generated method stub
Log.d(TAG, "Start on Service Connected now");
remoteService = IRemoteService.Stub.asInterface(service);
try {
Log.d(TAG, "on serivce connected, count is "
+ remoteService.getCount());
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
// TODO Auto-generated method stub
Log.d(TAG, "Start on Service Disconnected now");
remoteService = null;
}
};
private IRemoteService remoteService;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.bindService(new Intent(RemoteServiceActivity.this, RemoteService.class),
this.serviceConnection, Context.BIND_AUTO_CREATE);
Log.d(TAG, "Bind Service now");
isBound = true;
initUi();
Log.d(TAG, "Init UI now");
bnStart.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
try {
text1.setText("Start Service now! count is :" + remoteService.getCount());
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
startService(new Intent(RemoteServiceActivity.this, RemoteService.class));
Log.d(TAG, "Start Service now");
}
});
bnStop.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
text1.setText("Stop Service now!");
stopService(new Intent(RemoteServiceActivity.this, RemoteService.class));
Log.d(TAG, "Stop Service now");
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
Log.d(TAG, "============> onDestroy");
if (isBound) {
this.unbindService(serviceConnection);
isBound = false;
}
}
public void initUi() {
bnStart = (Button) findViewById(R.id.BnStart);
bnStop = (Button) findViewById(R.id.BnStop);
text1 = (TextView) findViewById(R.id.text1);
}
}

RemoteService.java

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package com.fly;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
public class RemoteService extends Service {
private static final String TAG = "U0fly RemoteService";
private int count;
private boolean threadDisable;
private IRemoteService.Stub serviceBinder = new IRemoteService.Stub() {
@Override
public int getCount() throws RemoteException {
// TODO Auto-generated method stub
return count;
}
};
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
Log.d(TAG, "============> onBind");
return serviceBinder;
}
@Override
public boolean onUnbind(Intent i) {
Log.e(TAG, "============> onUnbind");
return false;
}
@Override
public void onRebind(Intent i) {
Log.e(TAG, "============> onRebind");
}
@Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "============> onCreate");
//TODO
new Thread(new Runnable() {
@Override
public void run() {
while (!threadDisable) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
count++;
Log.d(TAG, "Count is " + count);
}
}
}).start();
}
@Override
public void onStart(Intent intent, int startId) {
Log.d(TAG, "============> onStart");
/*
// TODO
new Thread(new Runnable() {
@Override
public void run() {
while (!threadDisable) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
count++;
Log.d(TAG, "Count is " + count);
}
}
}).start();*/
}
@Override
public void onDestroy() {
super.onDestroy();
// TODO
this.threadDisable = true;
Log.d(TAG, "============> ondestroy");
}
public int getCount() {
return count;
}
}

AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fly" android:versionCode="1" android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".RemoteServiceActivity"
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="RemoteService">
<intent-fliter>
<action android:name="com.fly.RemoteService" />
</intent-fliter>
</service>
</application>
<uses-sdk android:minSdkVersion="7" />
</manifest>

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