CODEWITHSUNDEEP
javamacosawtrobot
dszopa
dszopa

Reputation: 325

Java Robot - Issue typing 'a' on mac

So I have the following code:

public static void main(String[] args) throws AWTException, InterruptedException {
    Robot robot = new Robot();

    robot.setAutoWaitForIdle(true);
    robot.setAutoDelay(40);

    // This works fine
    robot.mouseMove(40, 130);
    robot.mousePress(InputEvent.BUTTON1_MASK);
    robot.delay(200);
    robot.mouseRelease(InputEvent.BUTTON1_MASK);
    robot.delay(200);

    // The 'a' is never inputted
    robot.keyPress(KeyEvent.VK_A);
    robot.delay(200);
    robot.keyRelease(KeyEvent.VK_A);
}

This code successfully moves the mouse to the location 40, 130 and clicks. I make sure to have a text editor open in this location so that it becomes focused.

The next bit of code is the issue. The keyPress/Release snippet works perfectly fine for other codes. (Like 100, corresponding to the number 4.) But for some reason the letter 'a' will not be printed into the text editor.

I have tried having the program continually loop and print a for ~5 seconds. After the programatic click it will not print 'a' in the text editor. If I click on the editor again myself during this time, the string of 'a's will then start to appear.

What is causing this behavior and how can I fix it?

Upvotes: 0

Views: 941

Answers (1)

Jérôme
Jérôme

Reputation: 1254

As i assumed in my comments i think you have a problem focusing the editor correctly. You can try to use the Windows solution by doing ALT+TAB and then release it to select the editor.

Robot robot = new Robot();

robot.setAutoWaitForIdle(true);
robot.setAutoDelay(40);

robot.keyPress(KeyEvent.VK_ALT);//on mac use VK_META
robot.keyPress(KeyEvent.VK_TAB);
robot.keyRelease(KeyEvent.VK_ALT);//on mac use VK_META
robot.keyRelease(KeyEvent.VK_TAB);

robot.keyPress(KeyEvent.VK_A);
robot.delay(200);
robot.keyRelease(KeyEvent.VK_A);

Upvotes: 1

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