测试 START_STICKY 服务

Question

I have read this answer and it's not useful in my case.

我已经创建了一个简单的服务，它只记录方法名称。我从我的 activity 运行它并使用

杀死它

adb shell am stopservice -n serviceComponent

onDestroy() 调用服务。现在我已经从 onStartCommand() 返回 Service.START_STICKY；我等待系统重启服务和它从不重新启动。

这是正确的行为吗？我已经解决了 this 个问题，但找不到可靠的答案。

public class SampleService extends Service {

    private static final boolean LOG = true;

    public static final String CALLER = "sample.service.caller";

    /**
     * called once when service is created.
     */
    @Override
    public void onCreate() {
        super.onCreate();
        if(LOG){
            log("onCreate() -> thread: %s", Thread.currentThread().getName());
        }
    } // onCreate

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if(LOG){
            log(">>>>>> onStartCommand()");
        }
        if(LOG){
            log("thread: %s", Thread.currentThread().getName());
        }

        if(LOG){
            log("caller[%s]", intent.getStringExtra(CALLER));
        }

        if(LOG){
            log("<<<<<< onStartCommand()");
        }
        return Service.START_STICKY;
    } // onStartCommand

    @Override
    public void onDestroy() {
        super.onDestroy();
        if(LOG){
            log("onDestroy() -> thread: %s", Thread.currentThread().getName());
        }
        Toast.makeText(this, "destroying", Toast.LENGTH_SHORT).show();
    } // onDestroy


    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    } // onBind

    private void log(String format, Object... args){
        Utils.log("SampleService", String.format(format, args));
    } // log

} // SampleService

这是我到目前为止尝试过的方法

我用这个代码调用启动服务

  Intent intent = new Intent(this, SampleService.class);
intent.putExtra(SampleService.CALLER, "main activity");
if(null == startService(intent)){
    if(LOG){
        log("startService -> %s", "service not found!");
    }

} //

启动服务后，adb shell dumpsys activity services | grep "com.mallaudin"returns这个

ServiceRecord{8bc884d u0 com.mallaudin.services/.SampleService}
intent={cmp=com.mallaudin.services/.SampleService}
packageName=com.mallaudin.services
processName=com.mallaudin.services
baseDir=/data/app/com.mallaudin.services-2/base.apk
dataDir=/data/user/0/com.mallaudin.services
app=ProcessRecord{b1c1c5a 32017:com.mallaudin.services/u0a94}

现在我通过调用 adb shell am stopservice -n com.mallaudin.services/.SampleService 停止服务。它停止服务并且 onDestroy 是叫。当我从 phone.
中的服务列表中终止服务时，观察到相同的行为
```
Stopping service: Intent { cmp=com.mallaudin.services/.SampleService }
Service stopped
```
当我使用adb shell force-stop com.mallaudin.services命令时，服务停止但没有调用onDestroy()。

Answer 1

START_STICKY 文档：

... if this service's process is killed while it is started...

adb shell am stopservice 和 context.stopService(Intent) 实际上并没有终止服务进程，而只是停止服务，同时保留应用程序进程运行。所以这种情况下系统不会重启服务。

您可以尝试以下操作：创建一个带有 Activity 和 Service 的应用。然后启动 activity，启动服务，并通过从概览屏幕（又名最近菜单）滑动来终止应用程序。您的服务应该重新启动。

测试 START_STICKY 服务

Test START_STICKY service

android

android-service