CODEWITHSUNDEEP
androidbashionic2apk
ntyss
ntyss

Reputation: 101

Ionic 2: APK output corrupted on android device

I have developed an app with Ionic 2 and would like to test it on an Android phone. Thus in my bash CLI, I tried to run several commands to build the APK, such as: 

ionic cordova build android --release
ionic cordova build --release android
ionic cordova build android --release --prod
ionic cordova build android --prod

In the end, the APK file is generated, but when I transfer it on my android phone, it says the app is corrupted and it won't run. Any ideas how to fix my problem? Thanks.

EDIT: I also tried to plug my phone by USB. adb devices returns a list showing that my device is indeed connected. Then I ran ionic cordova run android, but I get an error : Your Android platform does not have api.js.

ionic info output:

global packages:

    @ionic/cli-utils : 1.4.0
    Cordova CLI      : 7.0.0
    Ionic CLI        : 3.4.0

local packages:

    @ionic/app-scripts              : 1.3.7
    @ionic/cli-plugin-cordova       : 1.4.0
    @ionic/cli-plugin-ionic-angular : 1.3.1
    Cordova Platforms               : browser broken ios 4.4.0
    Ionic Framework                 : ionic-angular 3.1.1

System:

    Node       : v6.10.3
    OS         : Windows 10
    Xcode      : not installed
    ios-deploy : not installed
    ios-sim    : not installed
    npm        : 3.10.10

Upvotes: 1

Views: 2109

Answers (3)

Loic Coenen
Loic Coenen

Reputation: 853

Please use this guide: https://developer.android.com/studio/publish/app-signing#signapp

As @Prashob Thekkyal correctly have guessed, you have to signed the app before it can be installed by Android Nougat. That being said, jarsigner refuse to sign an apk file. You have to use the apksigner utility that is present in the android build-tools.

Upvotes: 1

Prashob Thekkyal
Prashob Thekkyal

Reputation: 400

I was facing the same issue, after a long R&D, I found the issue. As per my understanding, the issue is not with the Android build, its the generated unsigned APK that you are running on your mobile device. The fact is that system will not allow to install an application with unsigned instead, it will show the corrupt message. So whether you want to upload your application to Google Store or not you have to make the application signed so that the system will at least allow the application to install into the mobile device.

Kindly refer below step to generate signed APK

Step 1: Open command prompt and go to the JDK path's bin folder

Step 2: Now we need to create a new certificate/keystore to generate your private key using the keytool command that comes with the JDK.

keytool -genkey -v -keystore my-release-key.jks -keyalg RSA -keysize 2048 -validity 10000 -alias my-alias

Or you can specify particular drive/folder where you want to generate keystore file

keytool -genkey -v -keystore D:\my-release-key.jks -keyalg RSA -keysize 2048 -validity 10000 -alias my-alias

You’ll first be prompted to create a password for the keystore. Then, answer the rest of the nice tools' questions and when it’s all done, you should have a file called my-release-key.jks created in the current or specified directory.

Note: Make sure to save this file somewhere safe, if you lose it you won’t be able to submit updates to your app!

Step 3: To sign the unsigned APK, run the jarsigner tool which is also included in the JDK:

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my-release-key.jks android-release-unsigned.apk my-alias

Or use below one, do forgot to specify the exact path to keystore.jks and app-release-unsigned.apk file

jarsigner -verbose -sigalg SHA1withRSA -d igestalg SHA1 -keystore D:\ionic_apk\my-release-key.jks D:\Ionic...\platforms\android\app\build\outputs\apk\release\app-release-unsigned.apk my-alias

That's it, you have just build a signed APK. Rename the APKfile if required. Copy that on your mobile device and install it.

So if you want to optimize you APK, then we need to run the zip align tool which can be found in /path/to/Android/sdk/build-tools/VERSION/zipalign. For example, on OS X with Android Studio installed, zipalign is in ~/Library/Android/sdk/build-tools/VERSION/zipalign:

zipalign -v 4 android-release-unsigned.apk HelloWorld.apk

To verify that your APK is signed run apksigner. The apksigner can be also found in the same path as the zipalign tool:

apksigner verify HelloWorld.apk

Upvotes: 3

Swapnil Patwa
Swapnil Patwa

Reputation: 4099

Cordova Platforms should be android x.x.x in your case.

Check root/platforms/platform.json it should be

 {
    "android": "x.x.x"
 }

Make sure your android folder is in right place(root directory/platforms/android).

Try removing and adding the platform again.

Upvotes: 0

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