本文介绍了如何在Android中将服务绑定到Activity，通过`SyncService`类展示了一个实现细节，包括服务启动、数据同步、网络检查以及服务与Activity间的交互。在Activity中，通过`bindService()`和`unbindService()`进行服务的连接与断开，并展示了如何在服务中使用`Binder`进行通信。
您可以将服务绑定到Activity：
link
您的服务：
public class SyncService extends Service {
private final IBinder mBinder = new MyBinder();
private String;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
forSync = common.getInfoForSync(this);
String[] getlist = forSync.split(":");
lastrecordfromlocal = getlist[0].toString();
userdefined = getlist[1].toString();
if (common.isNetAvailable(this) == true) {
SyncServiceTask InstallData = new SyncServiceTask(this);
try {
String (((retvalue))) = InstallData.execute(lastrecordfromlocal, userdefined).get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
return Service.START_NOT_STICKY;
}
@Override
public IBinder onBind(Intent arg0) {
return mBinder;
}
public class MyBinder extends Binder {
SyncService getService() {
return SyncService .this;
}
}
public String getRetValue() {
return retvalue;
}
}
并在Activity中检查值：
SyncService mService;
@Override
protected void onStart() {
super.onStart();
// Bind to LocalService
Intent intent = new Intent(this, SyncService .class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
}
@Override
protected void onStop() {
super.onStop();
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
/** Called when a button is clicked (the button in the layout file attaches to
* this method with the android:onClick attribute) */
public void onButtonClick(View v) {
if (mBound) {
Toast.makeText(this, "number: " + num, Toast.LENGTH_SHORT).show();
}
}
/** Defines callbacks for service binding, passed to bindService() */
private ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName className,
IBinder service) {
LocalBinder binder = (LocalBinder) service;
mService = binder.getService();
mBound = true;
}
@Override
public void onServiceDisconnected(ComponentName arg0) {
mBound = false;
}
};
扫一扫
754
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
