Ionic从1.3.3升级至2.0.0后Android4.4支付及launch.json异常

Hey there, let's break down and solve the two problems you're encountering after upgrading your Ionic project from 1.3.3 to 2.0.0:

1. InAppBrowser Payment White Screen on Android 4.4 #

Android 4.4's system WebView (based on Chrome 30) has significant compatibility gaps with modern web technologies, which is likely the root cause here since Ionic 2 relies on more up-to-date JS/CSS features. Here's what you can try:

• Downgrade InAppBrowser to a compatible version: Newer versions of cordova-plugin-inappbrowser may drop support for Android 4.4. Try installing a version known to work with older Android builds:

  cordova plugin remove cordova-plugin-inappbrowser
  cordova plugin add cordova-plugin-inappbrowser@3.2.0
  

• Add Crosswalk WebView Plugin: Crosswalk replaces the system WebView with a modern, self-contained Chrome-based WebView that fixes most compatibility issues on Android 4.x. Install it with:

  cordova plugin add cordova-plugin-crosswalk-webview
  

• Simplify InAppBrowser Launch Params: Test with a minimal configuration to rule out problematic settings. Replace your current window.open call with:

  window.open(yourPaymentUrl, '_blank', 'location=yes,toolbar=yes')
  

• Check ES5 Transpilation: Ensure your Ionic 2 code is properly transpiled to ES5, which Android 4.4 can handle. Verify your tsconfig.json has:

  "target": "es5"
  

• Inspect Logcat for Errors: Use adb logcat to capture WebView-related errors (filter with adb logcat | grep WebView). Look for syntax errors, failed resource loads, or unsupported API calls from the payment page or your app.
• Validate Payment Page Compatibility: Some payment gateways use features that don't work on Android 4.4. Test the payment URL directly in the Android 4.4 system browser to see if it loads correctly.

2. Grayed-Out Properties in launch.json (Cordova Tools Installed) #

Grayed-out properties usually mean VS Code isn't recognizing your launch.json as a valid Cordova configuration. Try these fixes:

• Verify Cordova Plugin & CLI Installation:
  • Make sure the Cordova Tools extension in VS Code is up to date. If not, uninstall it, restart VS Code, then reinstall.
  • Check that Cordova CLI is installed globally and accessible:

    cordova -v
    

• Confirm launch.json Location & Structure:
  • Ensure the file is in your project's root .vscode folder (create the folder if it doesn't exist).
  • Double-check your JSON structure matches the Cordova Tools schema. A basic valid config looks like this:

    {
      "version": "0.2.0",
      "configurations": [
        {
          "type": "cordova",
          "request": "launch",
          "name": "Launch Android",
          "platform": "android",
          "target": "emulator",
          "sourceMaps": true,
          "cwd": "${workspaceFolder}"
        }
      ]
    }
    

• Restart VS Code & Reload Workspace: Sometimes plugin initialization glitches cause configuration recognition to fail. Close VS Code completely, reopen your project, and try editing launch.json again.
• Check Workspace Settings: Ensure no VS Code settings are disabling Cordova integration. Go to File > Preferences > Settings, search for "cordova" and confirm no relevant options are set to false.

内容的提问来源于stack exchange，提问作者Nithya