java - Android服务应用——CPU监控

Question

我正在构建一个监控 CPU 温度的 Android 应用程序。我想知道是否有办法制作类服务，并防止它被杀死，如果我的主应用程序没有运行的话。如果可能的话，怎么做？

当 CPU 达到临界温度并降低时钟时，该服务将启动。

另外，是否可以知道服务是否正在运行？

提前致谢!

Answer 1

我的建议:

1. 为“android.intent.action.BOOT_COMPLETED”添加一个广播接收器并在开机时启动您的服务

2. 在您的 service.onStartCommand() 方法中，返回 START_STICKY 以确保您的服务在被系统终止时重新启动。

3. 在后台创建一个线程来循环读取 CPU 温度并完成您的工作。

关于“START_STICKY”的更多信息:

/**
 * Constant to return from {@link #onStartCommand}: if this service's
 * process is killed while it is started (after returning from
 * {@link #onStartCommand}), then leave it in the started state but
 * don't retain this delivered intent.  Later the system will try to
 * re-create the service.  Because it is in the started state, it will
 * guarantee to call {@link #onStartCommand} after creating the new
 * service instance; if there are not any pending start commands to be
 * delivered to the service, it will be called with a null intent
 * object, so you must take care to check for this.
 * 
 * <p>This mode makes sense for things that will be explicitly started
 * and stopped to run for arbitrary periods of time, such as a service
 * performing background music playback.
 */
public static final int START_STICKY = 1;