FireflyApi system settings

3.2 System settings

1. System shutdown

   Function：public void shutDown(boolean showConfirm)   
   Description：System shutdown   
   Parameters：Does showConfirm display the shutdown box   
   Example：   
   

2. System restart

   Function：public void reboot()  
   Description：System shutdown  
   Example：  
   

3. System hibernation

   Function：public void sleep()  
   Description：System shutdown  
   Example：  
   

4. Screen capture

   Function：public boolean  takeScreenshot(String path,String name)  
   Description：Take a screenshot and save it to the specified path  
   Parameters：path storage path  
   　　　name file stored name (available only in PNG format)  
   Return: Whether a screenshot is successfully captured true/false  
   Example：  
   

5. Screen rotation

   Function：public boolean  setRotation(int rotation)  
   Description：Rotation   
   Screen parameters：rotation Screen direction:  Surface.ROTATION_0  
   
                              Surface.ROTATION_270　　
   Example：mFireflyApi.setRotation(Surface.ROTATION_0);

6. Get the screen direction

   Function：public int  getRotation()  
   Description：Get the screen direction  
   Return：rotation Screen direction:      Surface.ROTATION_0  
   
   Example：  
   

7. Cancel screen rotation

   Function：public void  thawRotation()  
   Description：Cancel screen rotation  
   Example：  
   

8. Display / hide status bar

   Function：public void  setStatusBar(boolean show)  
   Description：Display / hide status bar  
   Parameters：show is set to true, it means to display the status bar, otherwise, false to hide the status bar  
   Example：  
   

9. Backlight switch

   Function：public void  setLcdBackLight(boolean on)  
   Description：Turns the backlight off without hibernating the device, the software still runs  
   Parameters：on is set to true, it means to turn on the backlight, otherwise, false to turn it off  
   Example：  
   

10. Is there a backlight

    Function：public boolean  hasLcdBackLight()  
    Description：Determine if there is backlight  
    Return：The value is set to true, it means there is backlight, or false for no backlight otherwise  
    Example：  
    

11. Set the screen brightness

    Function：public boolean setBrightness(int brightness)  
    Description：Set the screen brightness  
    Parameters：brightness range 0-255  
    Return：true on success, false on failure 
    Example：  
    

12. Get screen brightness

    Function：public int getBrightness()  
    Description：Get screen brightness  
    Return：screen brightness，returns -1 when the failure occurs  
    Example：  
    

13. Set system time

    Function：public boolean setTime( int year, int month, int day, int hour,  
    	 int minute,int second)  
    Description：Set system time  
    Parameters：year       
    　　　month    
    　　　day      
    　　　hour     
    　　　minute   
    　　　second   
    Return：true on success, false on failure  
    Example：  
    

14. Silent installation

    Function：public boolean silentInstall(String path)  
    Description：Silent installation 
    Parameters：path apk address  
    Return：true on successful installation  
    Example：  
    

15. Silent uninstallation

    Function：public boolean silentUnInstall(String package_name)  
    Description：Silent uninstallation  
    Parameters：package name the application to be uninstalled  
    Return：Returns true if the app is uninstalled successfully, or false otherwise 
    Remark：Only supports apps installed manually, but not for built-in apps  
    Example：  
    

16. Execute shell command

    Function：public Command execCmd(String cmd)  
    Description：Execute shell command  
    Parameters：cmd shell command  
    Return：Command　 input command
                   output　results  
                   exitStatus　shell running status, 0 is normal exit  
    Example：  
    

17. su permission to run shell command

    Function：public static Command execSuCmd(String cmd)  
    Description：su permission to run shell command  
    Parameters：cmd shell command  
    Return：Command   input command
      　　　　　　　　output results  
      　　　　　　　　exitStatus　shell running status, 0 is normal exit  
    Example：  
    mFireflyApi.execSuCmd("cat init.rk30board.rc");//init.rk30board.rc Default permission 750

18. Save system logcat

    Function：public void saveLogcat(String folderPath,String fileName)
    Description：Grab the LOG message in the Android layer and save it to the corresponding directory 
    Parameters：folderPath save path 　　
    　　　fileName　　save file name
    Example：  
    

19. Get Hdmiin current connection status

    Function：public　String getHdmiinStatus()
    Description：Get Hdmiin current connection status 
    Return：STATUS_HDMI_IN_CONNECT＝"1"　hdmiin connected 　　
    　　　STATUS_HDMI_IN_NO_CONNECT＝"0"　hdmiin not connected   　　
    Example：  
    

20. Get the current number of screens

    Function：public　int getScreenNumber(Context context)
    Description：Get the current number of screens
    Return：Returns 0 if it fails  　　
    Example：