一、绑定本地服务
1.1在AndroidManifest.xml文件中声明服务：
<service android:name".TestLocalService">
<intent-filter>
<action android:name = "maureen.intent.action.BIND_LOCAL_SERVICE"/>
</intent-filter>
</service>
1.2TestLocalService服务端代码
public class TestLocalService extends Service{
private final String TAG = TestLocalService.class.getSimpleName();
private IBinder mServiceBinder = new TestLocalServiceBinder();
public class TestLocalServiceBinder extends Binder{
public TestLocalService getService(){
return TestLocalService.this;
}
}
public void testFunc() {
Log.d(TAG,"testFunc");
Log.d(TAG, Log.getStackTraceString(new Throwable()));
@Override
public void onCreate(){
super.onCreate();
}
@Nullable
@Override
public IBinder onBind(Intent intent){
//Server 返回一个IBind
return mServiceBinder;
}
@Override
public boolean onUnbind(Intent intent){
return super.onUnbind(intent);
}
@Override
public void onDestroy(){
super.onDestroy();
}
}
1.3TestBindServiceActivity（Activity客户端代码）
点击按钮绑定Service
绑定成功后调用TestLocalService里的testFunc方法
点击back键解绑服务
public class TestBindServiceActivity extends Activity{
private static final Strin TAG = TestBindServiceActivity.class.getSimpleName();
private static final String ACTION_BIND_LOCAL_SERVICE = "maureen.intent.action.BIND_LOCAL_SERVICE";
private Button mBindLocalServiceBtn;
private static ServiceConnection mLocalConnection;
private static TestLocalService mLocalService = null;
private static class TestLocalConnection implements ServiceConnection{
@Override
public void onServiceConnected(ComponentName componentName,IBinder iBinder){
//注：这里获取的IBinder就是服务中返回的IBinder
Log.d(TAG,"onServiceVonnected:iBinder="+iBinder);
mLocalService = ((TestLocalService.TestLocalServiceBinder)iBinder).getService();
mLocalService.testFunc();
}
@Override
public void onServiceDisconnected(ComponentName componentName){
mLocalService = null;
}
}
private static class ButtonClickListener implements View.onClickListener{
private WeakReference<TestBindServiceActivity> mActivity;
public ButtonClickListener(TestBindServiceAcitvity activity){
mActivity = new WeakReference<>(activity);
}
@Override
public void onClick(View view){
switch(view.getId()){
case R.id.bind_local_service:
Intent localIntent = new Intetn();
localIntent.setPackage("com.example.maureen.mytestbindservice";
localIntent.setAction(ACTION_BIND_LOCAL_SERVICE);
mActivity.get().bindService(localIntent,mLocalConnection,BIND_AUTO_CREATE);
break;
default:
break;
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
log.d(TAG,"onCreate");
setContentView(R.layout.activity_test_bind_service);
mLocalConnection = new TestLocalConnection();
mBindLocalServiceBtn = findViewById(R.id.bind_local_serice);
mBindLocalServiceBtn.setOnCLickListener(new ButtonClickListener(this));
}
@Override
protected void onDestroy(){
super.onDestroy();
Log.d(TAG,"onDestroy");
unbindService(mLocalConnection);
}
}
值得注意：在本地服务使用时，服务端onBind函数返回mBinder和客户端onServiceConnected中的iBinder参数是相同的
二、绑定远程服务
2.1AndroidManifest.xml中声明Service，并指定Service运行的进程：
<service android:name=".TestRemoteService"
android:process=":remote">
<intent-filter>
<action android:name="maureen.intent.action.BIN_REMOTE_SERVICE"/>
</intent-filter>
</service>
2.2编写AIDL文件 IRemoteServiceAidlInterface.aidl
interface IRemoteServiceAidlInterface{
//此处写需要进行通信的方法
void testFunc1();
void testFunc2();
}
2.3点击编译，会在gen目录下生成AIDL文件
public interface IRemoteServiceAidlInterface extends android.os.IInterface {
/** Local-side IPC implementation stub class. */
public static abstract class Stub extends android.os.Binder implements com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface {
private static final java.lang.String DESCRIPTOR = "com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface";
/** Construct the stub at attach it to the interface. */
public Stub() {
this.attachInterface(this, DESCRIPTOR);
}
/**
* Cast an IBinder object into an com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface interface,
* generating a proxy if needed.
*/
public static com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface asInterface(android.os.IBinder obj) {
if ((obj==null)) {
return null;
}
ndroid.os.IInterface iin = obj.queryLocalInterface(DESCRIPTOR);
if (((iin!=null)&&(iin instanceof com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface))) {
return ((com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface)iin);
}
return new com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface.Stub.Proxy(obj);
}
@Override
public android.os.IBinder asBinder() {
return this;
}
@Override
public boolean onTransact(int code, android.os.Parcel data, android.os.Parcel reply, int flags) throws android.os.RemoteException {
java.lang.String descriptor = DESCRIPTOR;
switch (code) {
case INTERFACE_TRANSACTION: {
reply.writeString(descriptor);
return true;
}
case TRANSACTION_testFunc1: {
data.enforceInterface(descriptor);
this.testFunc1();
reply.writeNoException();
return true;
}
case TRANSACTION_testFunc2: {
data.enforceInterface(descriptor);
this.testFunc2();
reply.writeNoException();
return true;
}
default: {
return super.onTransact(code, data, reply, flags);
}
}
}
private static class Proxy implements com.example.maureen.mytestbindservice.IRemoteServiceAidlInterface {
private android.os.IBinder mRemote;
Proxy(android.os.IBinder remote) {
mRemote = remote;
}
@Override
public android.os.IBinder asBinder() {
return mRemote;
}
public java.lang.String getInterfaceDescriptor() {
return DESCRIPTOR;
}
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
@Override
public void testFunc1() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_testFunc1, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}
@Override
public void testFunc2() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_testFunc2, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}
}
static final int TRANSACTION_testFunc1 = (android.os.IBinder.FIRST_CALL_TRANSACTION + 0);
static final int TRANSACTION_testFunc2 = (android.os.IBinder.FIRST_CALL_TRANSACTION + 1);
}
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
public void testFunc1() throws android.os.RemoteException;
public void testFunc2() throws android.os.RemoteException;
}
2.4TestRemoteService服务端代码
public class TestRemoteService extends Service {
private final String TAG = TestRemoteService.class.getSimpleName();
private IBinder mRemoteBinder = new RemoteServiceImpl(this);
private static class RemoteServiceImpl extends IRemoteServiceAidlInterface.Stub{
private final String TAG = RemoteServiceImpl.class.getSimpleName();
private WeakReference<TestRemoteService> mRemoteService;
public RemoteServiceImpl(TestRemoteService service){
mRemoteService = new WeakReference<>(service);
}
@Override
public void testFunc1(){
Log.d(TAG,"testFunc1";
Log.d(TAG,Log.getStackTraceString(new Throwable()));
mRemoteService.get().testMyFunc1();
}
@Override
public void testFunc2(){
Log.d(TAG,"testFunc2");
mRemoteService.get().testMyFunc2();
@Override
public void onCreate(){
super.onCreate();
Log.d(TAG,"onCreate");
}
@Nullable
@Override
public IBinder onBind(Intent intent){
Log.d(TAG,"onBind:mRemoteBinder="+mRemoteBinder);
return mRemoteBinder;
}
@Override
public boolean onUnbind(Intent intent){
Log.d(TAG,"onUnbind");
return super.onUnbind(intent);
}
@Override
public void onDestroy(){
super.onDestroy();
Log.d(TAG,"onDestroy");
}
}
2.5TestBindServiceActivity（Activity为客户端代码）
点击按钮，绑定远程服务
服务绑定成功后，调用AIDL中声明的testFunc1和testFunc2方法
点击back，解绑服务
public class TestBindServiceActivity extends Activity{
private static final String TAG = TestBindServiceActivity.class.getSmpleName();
private static final String ACTION_BIND_REMOTE_SERVICE = "maureen.intent.action.BIND_REMOTE_SERVICE";
private Button mBindRemoteServiceBtn;
private static ServiceConnection mRemoteConnection;
private static class TestRemoteConection implements ServiceConnection{
@Override
publi void onServiceConnected(ComponentName componentName,IBinder iBinder){
Log.d(TAG,"onServiceConnected:iBinder="+iBinder);
//找出已完成注册的服务
IRemoteServiceAidlInterface remoteService = IRemoteServiceAidlInterface.Stub.asInterface(iBinder);
try{
//此处即可调用服务端方法
remoteService.testFunc1();
remoteService,testFunc2();
}catch(RemoteException e){
e.printStackTrace();
}
}
@Override
public void onServiceDisconnected(CompomemtName componentName){
}
}
private static class ButtonClickListener implements View.OnClickListener{
private WeakReference<TestBindServiceActivity>mActivity;
public ButonClickListener(TesBindServicaActivity activity){
mAvtivity = new WeakReference<>(activity);
}
@Override
public void onClick(View view){
switch(view.getId()){
case R.id.bind_remote_service:
Intent remoteIntent = new Intent();
//设置意图的包名
remoteIntent.setPackage("com.xxx.xxx.包名");
//设置意图的服务名
remoteIntent.setAction(ACTION_BIND_REMOTE_SERVICE);
//绑定服务参数：意图（包括服务所在包名和清单文件中注册的服务子标签action名）
mActivity.get().bindService(remoteIntent,mRemoteConnection,BIND_AUTO_CREATE
break;
default:
break;
}
}
}
同样值得注意的是：在远程绑定过程中，服务端onBind返回的mRemoteBinder是一个Binder服务端对象；而，客户端TestReomoteServiceConnection的onServiceConnected函数中iBinder其实是Binder的代理对象。
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