📱 Appium 3.x

Learn Appium mobile automation for Android and iOS with capabilities, locators, gestures, real devices, cloud testing and interviews.

Learn to test Android and iOS apps with Appium 3.x. Master client-server architecture, UIAutomator2, Desired Capabilities, Page Object Model, and real-world scenarios to reach interview level.

What you can learn on this page

  • 🎯 What is Appium? How Does the Architecture Work? — Think of Appium like a remote control system. Your test code (Java/TS) is the remote, Appium Server is the signal transmitter, and the mobile app is the TV. You press a button (test code runs), signal goes to Appium, Appium forwards it via UIAutomator2 to Andr
  • ⚙️ Step-by-Step Installation (Appium 3.x) — Think of setup like equipping a kitchen: first the gas line (Java JDK), then the stove (Android SDK), then the kitchen itself (Appium Server), finally the pan (UIAutomator2 driver). Order matters — each step depends on the previous one. 1. Prerequisites — Node
  • 🔧 Desired Capabilities & wdio.conf.ts — Think of capabilities like instructions to a taxi driver: "Istanbul, Turkish speaker, black Toyota, 4 seats". You tell Appium: "Android device, Samsung emulator, open this APK, version 13". Wrong or missing capability = taxi goes to the wro
  • 🔍 Locator Strategies & Page Object Model — Locators are like addresses on a map. "resource-id" is like a door number — precise and fast. "accessibility id" is like a building name — reliable. "xpath" is like "turn left at the square, walk two blocks, building next to
  • 🧪 Real Scenario — Product Search & Add to Cart — In this section we will open the Automation Exercise app on an Android emulator and run a complete E2E flow: Launch app → Search product → View detail → Add to cart → Verify cart. Full test files in both Java (JUnit 5 + Appium) and TypeScript (WebdriverIO). Te
  • 🚨 Common Errors & Solutions — Appium errors look scary at first but each has a specific cause and definite solution. Once you've seen these errors, you won't fall into the same traps again. For each error: why it happens → how to fix → correct code. Quick Diagnosis Table
  • 💼 50-Question Comprehensive Interview Simulation — This section contains 50 interview questions in increasing difficulty: 1-15 Basic, 16-35 Intermediate, 36-50 Advanced. Click each question to reveal the answer. Challenge yourself: think of the answer first, then check.