Deep Link (trust:// Or Link.trustwallet.com/open_url) Does Not Inject Provider Into DApp On Android

by ADMIN 100 views

Deep Linking Issue in Trust Wallet App on Android: A Critical Problem for Decentralized Applications

As the adoption of decentralized applications (dApps) continues to grow, the importance of seamless user experiences cannot be overstated. One of the key factors contributing to a smooth user experience is the ability to integrate dApps with popular wallets, such as Trust Wallet. However, a critical issue has been identified in the Trust Wallet app on Android devices, which affects the deep linking functionality. In this article, we will delve into the problem, its causes, and the expected behavior.

The Problem: Deep Linking Issue in Trust Wallet App

When using the trust:// or https://link.trustwallet.com/open_url deep link to open a dApp inside Trust Wallet's internal browser, the dApp loads successfully. However, the window.ethereum or window.trustwallet object is not injected, causing the dApp to be unable to detect Trust Wallet and connect to it. This issue is particularly problematic, as it prevents users from accessing their wallets and interacting with the dApp seamlessly.

To Reproduce the Issue

To reproduce the issue, follow these steps:

  1. Open an external mobile browser (e.g., Chrome on Android).
  2. Trigger a deep link to the dApp using the following URL:
    • trust://open_url?coin_id=56&url=https://yourdapp.com
    • or https://link.trustwallet.com/open_url?coin_id=56&url=https://yourdapp.com
  3. Trust Wallet app opens automatically.
  4. Trust Wallet's internal browser loads the dApp (https://yourdapp.com).
  5. In the loaded dApp:
    • window.ethereum is undefined
    • window.trustwallet is undefined
    • wagmi connector connector.getProvider() returns null
  6. As a result, the dApp cannot detect or connect to Trust Wallet.

Expected Behavior

The expected behavior when opening a dApp via a deep link (trust:// or link.trustwallet.com) is that Trust Wallet should properly inject window.ethereum and allow normal Web3 connection behavior. This behavior should be identical to manually entering the dApp URL inside Trust Wallet's browser.

Observed Behavior

After opening via deep link, window.ethereum and window.trustwallet are not injected. As a result, the dApp is unable to connect to Trust Wallet or detect the wallet.

Causes of the Issue

The causes of this issue are not immediately clear, but several factors may contribute to it:

  • Trust Wallet's internal browser: Trust Wallet's internal browser may not be properly configured to inject the window.ethereum object when opening a dApp via a deep link.
  • Deep linking mechanism: The deep linking mechanism used by Trust Wallet may not be compatible with the dApp's requirements, leading to the issue.
  • Wallet detection: Trust Wallet's wallet detection mechanism may not be functioning correctly, preventing the dApp from detecting the wallet.

Workarounds and Solutions

To resolve this issue, the following workarounds and solutions can be employed:

  • Manual entry: Users can manually enter the dApp URL inside Trust Wallet's browser to access the dApp seamlessly.
  • Modify the deep link: Developers can modify the deep link to use a different URL scheme or add additional parameters to ensure that the window.ethereum object is injected correctly.
  • Implement a fallback: Developers can implement a fallback mechanism to detect the wallet and inject the window.ethereum object manually.

The deep linking issue in Trust Wallet app on Android devices is a critical problem that affects the user experience of decentralized applications. By understanding the causes of the issue and implementing workarounds and solutions, developers can ensure that their dApps integrate seamlessly with Trust Wallet and provide a smooth user experience. As the adoption of dApps continues to grow, it is essential to address this issue and provide a seamless user experience for users.

To resolve this issue, we recommend the following:

  • Trust Wallet team: The Trust Wallet team should investigate the issue and provide a fix to ensure that the window.ethereum object is injected correctly when opening a dApp via a deep link.
  • Developers: Developers should modify their deep linking mechanism to ensure that the window.ethereum object is injected correctly.
  • Users: Users should manually enter the dApp URL inside Trust Wallet's browser to access the dApp seamlessly.

By working together, we can ensure that decentralized applications integrate seamlessly with Trust Wallet and provide a smooth user experience for users.
Frequently Asked Questions (FAQs) about the Deep Linking Issue in Trust Wallet App on Android

Q: What is the deep linking issue in Trust Wallet app on Android?

A: The deep linking issue in Trust Wallet app on Android is a problem where the window.ethereum or window.trustwallet object is not injected when opening a decentralized application (dApp) via a deep link (trust:// or link.trustwallet.com). This causes the dApp to be unable to detect Trust Wallet and connect to it.

Q: What are the symptoms of the deep linking issue?

A: The symptoms of the deep linking issue include:

  • window.ethereum is undefined
  • window.trustwallet is undefined
  • wagmi connector connector.getProvider() returns null
  • The dApp is unable to detect or connect to Trust Wallet

Q: How can I reproduce the issue?

A: To reproduce the issue, follow these steps:

  1. Open an external mobile browser (e.g., Chrome on Android).
  2. Trigger a deep link to the dApp using the following URL:
    • trust://open_url?coin_id=56&url=https://yourdapp.com
    • or https://link.trustwallet.com/open_url?coin_id=56&url=https://yourdapp.com
  3. Trust Wallet app opens automatically.
  4. Trust Wallet's internal browser loads the dApp (https://yourdapp.com).
  5. In the loaded dApp, check for the symptoms mentioned above.

Q: What is the expected behavior when opening a dApp via a deep link?

A: The expected behavior when opening a dApp via a deep link (trust:// or link.trustwallet.com) is that Trust Wallet should properly inject window.ethereum and allow normal Web3 connection behavior. This behavior should be identical to manually entering the dApp URL inside Trust Wallet's browser.

Q: What are the causes of the deep linking issue?

A: The causes of the deep linking issue are not immediately clear, but several factors may contribute to it, including:

  • Trust Wallet's internal browser: Trust Wallet's internal browser may not be properly configured to inject the window.ethereum object when opening a dApp via a deep link.
  • Deep linking mechanism: The deep linking mechanism used by Trust Wallet may not be compatible with the dApp's requirements, leading to the issue.
  • Wallet detection: Trust Wallet's wallet detection mechanism may not be functioning correctly, preventing the dApp from detecting the wallet.

Q: What are the workarounds and solutions for the deep linking issue?

A: To resolve the deep linking issue, the following workarounds and solutions can be employed:

  • Manual entry: Users can manually enter the dApp URL inside Trust Wallet's browser to access the dApp seamlessly.
  • Modify the deep link: Developers can modify the deep link to use a different URL scheme or add additional parameters to ensure that the window.ethereum object is injected correctly.
  • Implement a fallback: Developers can implement a fallback mechanism to the wallet and inject the window.ethereum object manually.

Q: What should I do if I encounter the deep linking issue?

A: If you encounter the deep linking issue, try the following:

  • Check the dApp's requirements: Ensure that the dApp is compatible with Trust Wallet and the deep linking mechanism.
  • Modify the deep link: Try modifying the deep link to use a different URL scheme or add additional parameters.
  • Implement a fallback: Consider implementing a fallback mechanism to detect the wallet and inject the window.ethereum object manually.

Q: How can I report the issue to the Trust Wallet team?

A: To report the issue to the Trust Wallet team, follow these steps:

  1. Visit the Trust Wallet website and navigate to the support section.
  2. Click on the "Report an issue" button and fill out the form with the required information.
  3. Attach any relevant screenshots or logs to the report.
  4. Submit the report and wait for a response from the Trust Wallet team.

By following these steps and workarounds, you can resolve the deep linking issue in Trust Wallet app on Android and ensure a seamless user experience for your decentralized application.