我有一项在单独进程中运行的服务。该服务生成一个新线程onCreate()
方法。该线程将消息发送回服务。
如果我手动启动应用程序,一切都会正常 - 消息会被接收Handler
在我的服务中。但在我的测试中handleMessage()
方法永远不会被调用。
我该如何修复我的测试handleMessage()
方法工作?
Thanks!
Service:
public class MyService extends Service {
private ServiceHandler mHandler;
private final int MSG_HELLO_WORLD = 1;
private final String TAG = getClass().getSimpleName();
@Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
return null;
}
@Override
public void onCreate() {
Log.d(TAG, "MyService.onCreate");
super.onCreate();
mHandler = new ServiceHandler();
new Thread(new Runnable() {
@Override
public void run() {
Log.d(TAG, "Thread: run()");
while (true) {
try {
Log.d(TAG, "sleeping...");
Thread.sleep(3000);
} catch (InterruptedException e) {
Log.d(TAG, "Thread was interrupted.");
break;
}
Log.d(TAG, "sending message...");
Message msg = Message.obtain(mHandler, MSG_HELLO_WORLD);
msg.sendToTarget();
}
}
}).start();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(TAG, "MyService.onStartCommand");
return START_REDELIVER_INTENT;
}
private class ServiceHandler extends Handler {
@Override
public void handleMessage(Message msg) {
Log.d(TAG, "ServiceHandler.handleMessage");
if (msg.what == MSG_HELLO_WORLD) {
Log.d(TAG, "Hello World message received!");
}
}
}
}
Test:
public class MyServiceTest extends ServiceTestCase<MyService> {
private static final String TAG = MyService.class.getSimpleName();
public MyServiceTest() {
super(MyService.class);
}
public void setUp() throws Exception {
super.setUp();
}
public void testStartService() throws Exception {
Intent startServiceIntent = new Intent(getContext(), MyService.class);
startService(startServiceIntent);
MyService myService = getService();
assertNotNull(myService);
// give the service some time to send messages
Thread.sleep(10000);
}
}
应用程序的 logcat 输出(handleMessage()
叫做):
MyService.onCreate
MyService.onStartCommand
Thread: run()
sleeping...
sending message...
sleeping...
ServiceHandler.handleMessage
Hello World message received!
sending message...
sleeping...
测试的 logcat 输出(handleMessage()
不被调用):
MyService.onCreate
MyService.onStartCommand
Thread: run()
sleeping...
sending message...
sleeping...
sending message...
sleeping...
sending message...
sleeping...