Focus on newly opened tab - selenium

Question

I click a login button in my app that causes new tab to be openned but altough Chrome displays content of the new tab ChromeDriver still is operates on the old tab.
Question: How to make ChromeDriver "follow" newly opened tab so I can interact with elements in it?

Answer 1

when you open another tab using selenium, even though it opened another tab it will still operate on the parent tab(the one that is inside/invoked in the get method) in order to operate on the child tab(newly opened tab) you need to do this
//storing all the windows opened by default parent is index 0
Set<String>ids=driver.getWindowHandles();
Iterator<String> it = ids.iterator();
String parentId = it.next(); //1st one = parent tab
String childId = it.next(); //2nd one = child tab
driver.switchTo().window(childId); //switch to child window
System.out.println(driver.getTitle());
driver.switchTo().window(parentId); //switches back to parent window

Answer 2

You just need to switch to the new tab.
By default selenium driver will stay on the first tab that the driver has opened.
Selenium uses these 2 methods to handle it.
driver.getWindowHandle() [It will get the current tab handle]
driver.getWindowHandles() [It will get all the tab handles that are
open]
So, you need to store all the tabs in a variable and handle them one by one.
See the below example.
//I am using a set string "allWindowHandles1" to store all the tabs.
//I am using a simple string "handle1 " to handle the tabs one by one[if present]
//You can use the below for each loop in future if there is multiple child windows also
Set<String> allWindowHandles1 = driver.getWindowHandles();
for(String handle1 : allWindowHandles1) {
Thread.sleep(2000);
driver.switchTo().window(handle1);
//You can write your code to handle the elements in the child window here
//Now the driver will be in your child window
Thread.sleep(2000);
}

Answer 3

String winHandleNew = driver.getWindowHandle();
//Go through loop to get handle of newest window opened
for(String winHandle : driver.getWindowHandles()){
winHandleNew = winHandle;
}
// Switch to newest window opened
driver.switchTo().window(winHandleNew);

Answer 4

You need switch first, use .switchTo().window:
//handle original window
String original = driver.getWindowHandle();
//do something here to bring new window
btn.click();
for(String handle: driver.getWindowHandles()) {
driver.switchTo().window(handle);
if(!driver.getWindowHandle().equals(original)) {
//perform with new window
}
}
//back to original window
driver.switchTo().window(original);
With the above code you can switch again to original window.