How to "wait to activity" using Appium, on begin and during test itself?

Question

I'm starting an already installed app using appium.

After my driver is initialized. How do I make it poll-wait till certain activity is displayed?

I saw only this way to wait for activity when starting up

cap.setCapability("app-wait-activity", "activity-to-wait-for");

Is there any other way? How do I wait to another specific activity when not initializing. Say after a button click?

just sleep x seconds ?

Answer 1

Specific activity means some specific element is being displayed. I use the following code to wait until some certain element on the screen:

WebDriverWait wait = new WebDriverWait(driver, 30);
wait.until(ExpectedConditions.elementToBeClickable(By
        .xpath("//android.widget.Button[contains(@text, 'Log In')]")));

or:

WebDriverWait wait = new WebDriverWait(driver, 30);
wait.until(ExpectedConditions.presenceOfElementLocated(By
            .xpath("//android.widget.TextView[contains(@resource-id, 'action_bar_title')]")));

Answer 2

WebDriverWait wait = new WebDriverWait(driver,20);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("about_me"))); 

If you wish to know in detail how implicit and explicit wait can be used in Appium then visit this TUTORIAL

Answer 3

You can use the following code to poll the current activity every second. If you want to reduce polling time you can reduce sleep time to 500 and wait*2 :

public void waitForActivity(String desiredActivity, int wait) throws InterruptedException
{
    int counter = 0;
    do {
        Thread.sleep(1000);
        counter++;
    } while(driver.currentActivity().contains(desiredActivity) && (counter<=wait));

    log("Activity appeared :" + driver.currentActivity(), true);
}

Answer 4

long startTime = System.currentTimeMillis();
while(System.currentTimeMillis() - startTime < Time_Out)
    if (getDriver().currentActivity().equals(activity))
        break;