Android打开最近任务列表代码

Class serviceManagerClass;
try {
    serviceManagerClass = Class.forName("android.os.ServiceManager");
  Method getService = serviceManagerClass.getMethod("getService",
  String.class);
  IBinder retbinder = (IBinder) getService.invoke(
            serviceManagerClass, "statusbar");
  Class statusBarClass = Class.forName(retbinder
            .getInterfaceDescriptor());
  Object statusBarObject = statusBarClass.getClasses()[0].getMethod(
            "asInterface", IBinder.class).invoke(null,
 new Object[]{retbinder});
  Method clearAll = statusBarClass.getMethod("toggleRecentApps");
  clearAll.setAccessible(true);
  clearAll.invoke(statusBarObject);
} catch (Exception e) {
    e.printStackTrace();
}