Телеграм канал «App Development»

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🚀 App Development Trick: Automate Your Own App Like a Real User

uiautomator2 is an open-source Android automation library that lets Python control a connected Android device through UI actions such as taps, swipes, text input, screenshots, and UI-element checks. It works by running an automation service on the device and communicating with it from Python over HTTP.

⚠️ Important: Use it only for testing your own app, demo apps, or systems where you have written permission. Do not use it to evade app terms of service, create fake engagement, bulk-run promotions, or automate other companies’ apps without authorization.

🎯 What you can automate safely:
• Open your app
• Test login and signup flows
• Tap buttons and menus
• Fill forms
• Swipe through screens
• Verify error messages
• Capture screenshots
• Check whether UI elements appear
• Run the same test on multiple devices
Setup

bash
pip install uiautomator2
uiautomator2 version
adb devices
Enable Developer Options and USB Debugging on your Android device, connect it by USB, and confirm it appears in adb devices.

Copyable Test Script

python

import uiautomator2 as u2

# Connect to the first connected Android device
d = u2.connect()
print(d.info)

# Start your app
d.app_start("com.example.myapp", stop=True)

# Wait for the login screen
d(text="Login").wait(timeout=10)

# Enter test details
d(resourceId="com.example.myapp:id/email").set_text("test@example.com")
d(resourceId="com.example.myapp:id/password").set_text("Test@12345")

# Tap login
d(text="Login").click()

# Verify success screen
if d(text="Welcome").wait(timeout=10):
print("PASS: Login flow works")
else:
d.screenshot("login_failure.png")
print("FAIL: Welcome screen not found")
This uses UI selectors, waits, text input, clicks, screenshots, and assertions—core building blocks for automated mobile testing.

Why It Is Useful
Tests the real app UI, not only backend logic.

Finds broken buttons, missing screens, and slow responses.

Repeats the same test without manual effort.

Creates screenshot evidence for QA reports.

Helps test different screen sizes and Android versions.

Common Mistake
Do not rely only on screen coordinates such as d.click(500, 1200). Prefer stable selectors like resourceId, text, or description, because buttons move on different devices and screen sizes.

Practice Task
Build a small Python test that opens your app, enters invalid login details, checks that the error message appears, and saves a screenshot.

🔗 Learn more:
openatx/uiautomator2 on GitHub


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🚀 App Development Trick: Test Apps on a Real Phone Without a Powerful Laptop

Instead of using a heavy Android emulator, connect your physical Android phone with USB debugging + ADB, then mirror it with scrcpy. This is lighter for low-resource laptops because the phone runs the app; your laptop mainly builds and displays it. ADB supports installing apps on connected devices, and scrcpy mirrors and controls an Android device over USB.

One-Time Setup
On your phone: Settings → About phone → tap Build number 7 times to enable Developer options.

Go to Settings → Developer options → enable USB debugging.

Connect your phone using a data USB cable.

Accept the “Allow USB debugging?” popup on the phone.

Install Android SDK Platform Tools for adb and download scrcpy only from its official GitHub repository.

Check Connection

adb devices
You should see your device ID and the word device.

If it says unauthorized, unlock the phone and approve the debugging permission again.

Run Your App
From Android Studio:

Select your physical device → click Run ▶
Or install a built APK manually:

adb install app-debug.apk
To update an already installed app:

adb install -r app-debug.apk
ADB’s official install command is adb install path_to_apk.


Mirror and Control Phone
Open a terminal in the scrcpy folder and run:

scrcpy
Your phone screen appears on the laptop, and you can control it with mouse and keyboard. scrcpy works over USB, has low latency, and does not require root.

Low-Resource Mode
Use a smaller mirror window and lower quality for smoother performance:

scrcpy --max-size 1024 --max-fps 30
For even lighter testing:

scrcpy --no-audio --max-size 800 --max-fps 24
Useful Commands

adb devices
adb install -r app-debug.apk
adb logcat
adb shell pm list packages | findstr yourpackage
adb uninstall com.example.yourapp
adb logcat is especially useful for viewing app errors while testing.

Important Note
scrcpy is for running, testing, and viewing apps. It is not for flashing system images. Flashing Android system images uses Fastboot, which is a separate and riskier process; avoid it unless you understand bootloader unlocking and device-specific instructions.

📌 Remember: Use only official sources for ADB and scrcpy, keep USB debugging off when not developing, and never approve debugging prompts from unknown computers.



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---

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🚨 Earn Passive Money Easily 🚨

Since your device is already connected to the internet, you can actually get paid for the data you aren't using.

Honeygain is a trusted app that runs quietly in the background of your phone or PC. It just securely shares your unused bandwidth with researchers and pays you for it. Your connection stays 100% encrypted, and it never accesses your personal data, files, or browsing history.

🎁 Official Bonus:
If you use the invite link below, you get an instant $5 starting bonus to help you reach your first cash payout faster.

👇 How to set it up in 2 minutes:

1. Click the link and create your free account:
https://bit.ly/3wUxw09

2. Download the app (works on Android, Windows, Mac, or Linux).

3. Log in, let it run in the background, and collect your passive income.

🔗 Claim your free $5 Bonus here:
https://bit.ly/3wUxw09

💡 Pro-Tip: You can connect both your phone and your laptop to the same account to double your earning speed!

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