cordova run android executes fine. But Android 4.1.2 doesn't start the app

Question

I\'m starting to develop and android app using Cordova 5.0.0 (cordova -v prints 5.0.0), and testing it on a Moto Razr D1 with Android 4.1.2. Under Windows 7, btw.

Answer 1

Here are a couple of things to check and be aware of, in case you didn't know:

• Your CLI version cordova -v won’t necessarily match the platform version cordova platform
• Your platform versions between the different platforms (if you have any) may not match. For example, Android may have a different platform version than iOS.

If you've updated to the latest version of cordova-android sdk, please ensure you read through the releasenotes.md: https://github.com/apache/cordova-android/blob/master/RELEASENOTES.md

I'm not sure what SD is but I've installed my apps via

adb install 

After comparing and checking your uploaded apk to your device, which I believe is easier to debug than the emulator, start up Android Debug Bridge with logcat:

adb -d logcat

If you prefer debugging with logcat through emulator, then:

adb -e logcat

There are extra debug flags to reduce the verbosity here: http://developer.android.com/tools/debugging/debugging-log.html. You'll need to adjust the filter spec to however you like, such as this: adb logcat ActivityManager:I MyApp:D *:S. I prefer to use adb logcat *:D to capture almost all debugging messages but reduce the verbosity slightly.

Hopefully, upon connection and startup of logcat you'll be able to catch what errors may be happening to cause your issue.

EDIT: Here's another method to do device debugging via chrome browser developer tools: https://developer.chrome.com/devtools/docs/remote-debugging

In general, here are the steps from the above link:

Requirements: Chrome 32 or later, USB cable to connect to Android device, browser debugging requires Android 4.0+, app debugging requires Android 4.4+

1. Enable USB debugging on the device: Settings > Developer options. If you have an Android 4.2+ device, the developer options are hidden by default. Click on Settings > About phone and tap Build number seven times.
2. In "Developer options", select USB debugging checkbox.
3. Click OK to confirm that you are turning on USB debugging.
4. Connect your device to your computer using the USB cable.
5. Open Chrome browser and in the search/address bar type chrome://inspect.
6. Click on the checkbox for Discover USB devices.
7. On your device, an alert prompt appears. Click OK.
8. The chrome://inspect page should now display your connected device. Click on the device's "inspect" link. Chrome developer tools should appear.

There is more information in the remote-debugging link above regarding live screencasting, proxy setup, port forwarding, and virtual host mapping.