Selenium - driver.getWindowHandle() - Firefox stops after opening the new window - selenium

Question

I'm using driver.getWindowHandle() for switching between windows. This is working fine in Chrome but in Firefox after clicking on the button that opens the new window, the execution doesn't continue, neither stops. How can I resolve it?
Edit :- Code shared in comment -
String parentWindow = driver.getWindowHandle();
driver.findElement(By.id("mybutton")).click();
Set<String> handles = driver.getWindowHandles();
Code:
String parentWindow = driver.getWindowHandle();
driver.findElement(By.id("myButton")).click();
Set<String> handles = driver.getWindowHandles();
for (String windowHandle : handles) {
if (!windowHandle.equals(parentWindow)) {
driver.switchTo().window(windowHandle);
//call methods
}
}
driver.switchTo().window(parentWindow); // cntrl to parent window

Answer 1

With Selenium 2.53.1 using firefox 47.0.1 as the WebDriver in Java: You need to open the separate windows/browsers in it's own driver. I have having the same problem. No matter how many windows or tabs I opened, "driver.getWindowHandles()" would only return one handle so it was impossible to switch between tabs. I found Chrome worked way better for me.
Once I started using Chrome 51.0, I could get all handles. The following code show how to access multiple drivers and multiple tabs within each driver.
// INITIALIZE TWO DRIVERS (THESE REPRESENT SEPARATE CHROME WINDOWS/BROWSERS)
driver1 = new ChromeDriver();
driver2 = new ChromeDriver();
// LOOP TO OPEN AS MANY TABS AS YOU WISH
for(int i = 0; i < TAB_NUMBER; i++) {
driver1.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL + "t");
// SLEEP FOR SPLIT SECOND TO ALLOW DRIVER TIME TO OPEN TAB
Thread.sleep(100);
// STORE TAB HANDLES IN ARRAY LIST FOR EASY ACCESS
ArrayList tabs1 = new ArrayList<String> (driver1.getWindowHandles());
// REPEAT FOR THE SECOND DRIVER (SECOND CHROME BROWSER WINDOW)
// LOOP TO OPEN AS MANY TABS AS YOU WISH
for(int i = 0; i < TAB_NUMBER; i++) {
driver2.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL + "t");
// SLEEP FOR SPLIT SECOND TO ALLOW DRIVER TIME TO OPEN TAB
Thread.sleep(100);
// STORE TAB HANDLES IN ARRAY LIST FOR EASY ACCESS
ArrayList tabs2 = new ArrayList<String> (driver2.getWindowHandles());
// NOW PERFORM DESIRED TASKS WITH FIRST BROWSER IN ANY TAB
for(int ii = 0; ii <= TAB_NUMBER; ii++) {
driver2.switchTo().window(tabs2.get(ii));
// LOGIC FOR THAT DRIVER'S CURRENT TAB
}
// PERFORM DESIRED TASKS WITH SECOND BROWSER IN ANY TAB
for(int ii = 0; ii <= TAB_NUMBER; ii++) {
drvier2.switchTo().window(tabs2.get(ii));
// LOGIC FOR THAT DRIVER'S CURRENT TAB
}
Hopefully that gives you a good idea of how to manipulate multiple tabs in multiple browser windows.