之前有学习过从另一个App启动本地AppClass,通过Action来完成。
由于Service在android5.0后只能通过显示Intent来启动Service
本地App:
public class MainActivity extends AppCompatActivity {
@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));
}
}
AppService:
public class AppService extends Service {
public AppService() {
}
@Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
Override
public void onCreate() {
super.onCreate();
System.out.println("Service started");
}
@Override
public void onDestroy() {
super.onDestroy();
System.out.println("Service destoryed");
}
}
AnotherApp:
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Intent serviceIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
serviceIntent=new Intent();
serviceIntent.setComponent(new ComponentName("com.example.nick.startservicefromanotehrapp","com.example.nick.startservicefromanotehrapp.AppService"));
//通过组件Component输入对应包名及类名启动另一个App中的服务,包名可在MainFest中找到
findViewById(R.id.btnStartService).setOnClickListener(this);
findViewById(R.id.btnStopService).setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.btnStartService:
startService(serviceIntent);
break;
case R.id.btnStopService:
stopService(serviceIntent);
break;
}
}
}
在此基础上,可以使用新建AIDL页面完成跨应用绑定
在App中新建AIDL,会自动完成代码:
interface IAppServiceRemoteBinder {
void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
double aDouble, String aString);
}
同时在AppService中:
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 {
}
};
}
在新建完按钮后增加findview获取按钮
增加条件触发:
case R.id.btnBinderAppService:
bindService(serviceIntent,this,Context.BIND_AUTO_CREATE);
break;
case R.id.btnUnbinderAppService:
unbindService(this);
break;
增加connect和disconnect:
public void onServiceConnected(ComponentName name, IBinder service) {
System.out.println("Bind Service");
System.out.println(service);
}
@Override
public void onServiceDisconnected(ComponentName name) {
}
}
通过另一个APP远程操作进行通信
在之前的基础上:
在APP中的AIDL文件中新增:
void setData(String data);
在AppService中加入:
public void setData(String data) throws RemoteException {
AppService.this.data=data;
}
oncreate下新建线程进行捕获信息
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();
onDestory下增加boolean开关:
running=false;
新建开关及初始数据对象
private String data="默认数据";
private boolean running=false;
在AnotherAPP中新建文本框及同步按钮:
private EditText etInput;
etInput=findViewById(R.id.etInput);
//不在同一个方法中;
findViewById(R.id.btnSync).setOnClickListener(this);
在Switch中:
case R.id.btnSync:
if (binder!=null){
try {
binder.setData(etInput.getText().toString());
} catch (RemoteException e) {
e.printStackTrace();
}
}
break;
在connect及disconnect中:
public void onServiceConnected(ComponentName name, IBinder service) {
System.out.println("Bind Service");
System.out.println(service);
binder=IAppServiceRemoteBinder.Stub.asInterface(service);
//此处为强制类型转换
}
@Override
public void onServiceDisconnected(ComponentName name) {
}
private IAppServiceRemoteBinder binder=null;
}
需要在AnotherAPP中新建AIDL FOLDER文件,并在其下新建名称同APP包名的包文件夹,并将APP中的AIDL文件复制过去
本文详细介绍如何在Android系统中实现跨应用服务通信,包括通过Intent启动服务、使用AIDL完成跨应用绑定,以及如何通过远程调用修改服务状态,实现两应用间的实时数据同步。
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