android添加reboot选项

1，GlobalAction.java中mItems = Lists.newArrayList(处添加new SinglePressAction( 
                        com.android.internal.R.drawable.ic_lock_power_off, 
                        R.string.global_action_power_reboot) { 
 
                    public void onPress() { 
                        ShutdownThread.reboot(mContext, null, true); 
                    } 
 
                    public boolean showDuringKeyguard() { 
                        return true; 
                    } 
 
                    public boolean showBeforeProvisioning() { 
                        return true; 
                    } 
                });
2，在ShutdownThread.java中新增加一个方法
public static void shutdown(final Context context, boolean confirm,boolean isReboot) { 
        mReboot = isReboot ; 
        // ensure that only one thread is trying to power down. 
        // any additional calls are just returned 
        synchronized (sIsStartedGuard) { 
            if (sIsStarted) { 
                Log.d(TAG, "Request to shutdown already running, returning."); 
                return; 
            } 
        } 
 
        Log.d(TAG, "Notifying thread to start radio shutdown"); 
 
        if (confirm) { 
            final AlertDialog dialog = new AlertDialog.Builder(context) 
                    .setIcon(android.R.drawable.ic_dialog_alert) 
                    .setTitle(mReboot?com.android.internal.R.string.global_action_power_reboot:com.android.internal.R.string.global_action_power_off) 
                    .setMessage(mReboot?com.android.internal.R.string.reboot_confirm:com.android.internal.R.string.shutdown_confirm) 
                    .setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() { 
                        public void onClick(DialogInterface dialog, int which) { 
                            beginShutdownSequence(context); 
                        } 
                    }) 
                    .setNegativeButton(com.android.internal.R.string.no, null) 
                    .create(); 
            dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); 
            if (!context.getResources().getBoolean( 
                    com.android.internal.R.bool.config_sf_slowBlur)) { 
                dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND); 
            } 
            dialog.show(); 
        } else { 
            beginShutdownSequence(context); 
        } 
    }