Thread类内的getSystemService错误

Question

public class myThread extends Thread
{
Context context;

public myThread (Context c)
{
    this.context = c;
}

@Override
public void run()
{
    super.run();

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.cancelAll();
}
}

我在eclipse上的getSystemService上遇到红色x错误，说“类型myThread的方法getSystemService（String）未定义”

救命

Answer 1

此方法在Context类中定义，您不能从扩展Thread当前类中访问它。

您必须使用context变量并执行以下操作：

NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);