java - onStartCommand 未与 startService 一起调用

Question

我想从我的 Activity 类(class)中启动一项服务。问题是，onStartCommand 永远不会被调用。我在那里放置了断点，但它从未被击中。我的例子非常简单，我不明白为什么它不起作用。

MainActivity.java:

public class MainActivity extends AppCompatActivity {

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

        Intent serviceIntent = new Intent(TestService.class.getName());
        serviceIntent.putExtra("UserID", "123456");
        serviceIntent.setPackage(this.getPackageName());
        startService(serviceIntent);
    }
}

如果我删除 serviceIntent.setPackage(this.getPackageName()); 我收到以下错误:

java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=package.TestService (has extras) }

这就是为什么我添加它来消除这个错误。但它仍然不起作用。

TestService.java:

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

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

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

AndroidManifest.xml:

<application
    ...
    <service
        android:name=".TestService"
        android:enabled="true"
        android:exported="true"></service>
    ...
</application>

Answer 1

请尝试一下

Add in Activity class

Intent serviceIntent = new Intent(MainActivity.this, TestService.class);
serviceIntent.putExtra("UserID", "123456");
startService(serviceIntent);