Android中跨应用绑定Service并通信

package com.example.yangjian.startservicefromanotherapp;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//startService(new Intent(this, AppService.class));
}

@Override
protected void onDestroy() {
super.onDestroy();

//stopService(new Intent(this, AppService.class));
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}

package com.example.yangjian.startservicefromanotherapp;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;

public class AppService extends Service {
public AppService() {
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return super.onStartCommand(intent, flags, startId);
}

@Override
public IBinder onBind(Intent intent) {
return new IAppServiceRemoteBinder.Stub() {
@Override
public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

}

@Override
public void setData(String data) throws RemoteException {
AppService.this.data = data;
}
};
}

@Override
public void onCreate() {
super.onCreate();

System.out.println("Service started");
//创建的线程，测试程序是否正在运行
new Thread() {
@Override
public void run() {
super.run();

running = true;
while (running) {
System.out.println(data);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}.start();
}

@Override
public void onDestroy() {
super.onDestroy();

System.out.println("Service destroy");

running = false;
}

private String data = "moren shuju";
private boolean running = false;
}

3.Android的接口定义语言：AIDL

// IAppServiceRemoteBinder.aidl
package com.example.yangjian.startservicefromanotherapp;

// Declare any non-default types here with import statements

interface IAppServiceRemoteBinder {
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
double aDouble, String aString);
void setData(String data);
}

第三步：1.在another应用程序中MainActivity的代码如下:

package com.example.yangjian.anotherapp;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;

import com.example.yangjian.startservicefromanotherapp.IAppServiceRemoteBinder;

public class MainActivity extends ActionBarActivity implements View.OnClickListener, ServiceConnection {

private Intent serviceIntent;
private EditText etInput;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

etInput = (EditText) findViewById(R.id.etInput);

serviceIntent = new Intent();
serviceIntent.setComponent(new ComponentName("com.example.yangjian.startservicefromanotherapp", "com.example.yangjian.startservicefromanotherapp.AppService"));

findViewById(R.id.btnStartAppService).setOnClickListener(this);
findViewById(R.id.btnStopAppService).setOnClickListener(this);
findViewById(R.id.btnBindAppService).setOnClickListener(this);
findViewById(R.id.btnUnbindAppService).setOnClickListener(this);
findViewById(R.id.btnSync).setOnClickListener(this);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnStartAppService:

startService(serviceIntent);
break;
case R.id.btnStopAppService:
stopService(serviceIntent);
break;
case R.id.btnBindAppService:

bindService(serviceIntent, this, Context.BIND_AUTO_CREATE);
break;
case R.id.btnUnbindAppService:
unbindService(this);
binder = null;
break;
case R.id.btnSync:
if(binder != null) {
try {
binder.setData(etInput.getText().toString());
} catch (RemoteException e) {
e.printStackTrace();
}
}
break;
}
}

@Override
public void onServiceConnected(ComponentName name, IBinder service) {
System.out.println("Bind Service");
System.out.println(service);

binder = IAppServiceRemoteBinder.Stub.asInterface(service);
}

@Override
public void onServiceDisconnected(ComponentName name) {

}
private IAppServiceRemoteBinder binder = null;
}

2.在MainXml文件中的代码如下：

<LinearLayout 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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity">

<TextView
android:text="@string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="启动外部服务"
android:id="@+id/btnStartAppService" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="停止外部服务"
android:id="@+id/btnStopAppService"
android:layout_gravity="center_vertical" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="绑定外部服务"
android:id="@+id/btnBindAppService" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="解除外部服务"
android:id="@+id/btnUnbindAppService"
android:layout_gravity="center_vertical" />

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="这是另一个应用中的数据"
android:id="@+id/etInput" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="同步数据到绑定的服务中"
android:id="@+id/btnSync" />

</LinearLayout>

3.Android的接口定义语言：AIDL

// IAppServiceRemoteBinder.aidl
package com.example.yangjian.startservicefromanotherapp;

// Declare any non-default types here with import statements

interface IAppServiceRemoteBinder {
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
double aDouble, String aString);
void setData(String data);
}