Why application built with Ionic Framework substitute another Ionic app while installation on Android device

Issue

I developed a few apps with Ionic framework (Angular). When I build an .apk file and install it to Android device then the new one app substitute (delete the old one) the old one installed earlier. When I develop native app in Android Studio I have no such an issue.

I searched Ionic documentation but this issue is not found. I have only suggestions that the issue will resolve after building with some flag (ex. --release) or signing the app's apk-file.

The ISSUE was the "android" folder had existed already. So I described the solution in the answer. This issue appear only if the app ID is not changed before the first android/ios adding.

Search for "com." across the project

12 results - 6 files

android/build.gradle:
       9      dependencies {
      10:         classpath 'com.android.tools.build:gradle:7.0.4'
      11:         classpath 'com.google.gms:google-services:4.3.5'
      12  

android/app/build.gradle:

       1: apply plugin: 'com.android.application'
       2  

      46      if (servicesJSON.text) {
      47:         apply plugin: 'com.google.gms.google-services'
      48      }

android/app/src/androidTest/java/com/getcapacitor/myapp/ExampleInstrumentedTest.java:

       1: package com.getcapacitor.myapp;
       2  
    
      23  
      24:         assertEquals("com.getcapacitor.app", appContext.getPackageName());
      25      }

android/app/src/main/assets/capacitor.plugins.json:
  

     3          "pkg": "@capacitor/app",
       4:       "classpath": "com.capacitorjs.plugins.app.AppPlugin"
       5    },
    
       7        "pkg": "@capacitor/haptics",
       8:       "classpath": "com.capacitorjs.plugins.haptics.HapticsPlugin"
       9    },
    
      11        "pkg": "@capacitor/keyboard",
      12:       "classpath": "com.capacitorjs.plugins.keyboard.KeyboardPlugin"
      13    },
    
      15        "pkg": "@capacitor/status-bar",
      16:       "classpath": "com.capacitorjs.plugins.statusbar.StatusBarPlugin"
      17    }

android/app/src/main/java/io/ionic/starter/MainActivity.java:

      2  
      3: import com.getcapacitor.BridgeActivity;
      4  

android/app/src/test/java/com/getcapacitor/myapp/ExampleUnitTest.java:

      1: package com.getcapacitor.myapp;
      2  

Solution

SOLVED!

1. Delete "android' folder
2. Change the appId to: 'io.ionic.yourApp' in capacitor.config.ts
3. cmd ionic cap add android (I rebuilt "www" folder too before this) That's all.

Answered By - Dziamid Harbatsevich