App does not overwrite the already existing app

Question

manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.pvijayalakshmi.previousversion">

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

grade file

apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "27.0.1"
defaultConfig {
    applicationId "com.example.pvijayalakshmi.previousversion"
    minSdkVersion 15
    targetSdkVersion 26
    versionCode 2
    versionName "1.1"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:design:26.+'
testCompile 'junit:junit:4.12'
}

I have developed an application. And I have installed it on my phone.

Now I have a requirement of adding one column to the my application. I have added one column to the database. I have made changes to the onUpgrade(). I have changed the database version from 1 to 2.

I have changed the version code and version name in gradle file.

I don't want to uninstall the app and re installing. I want to upgrade the app automatically.

Now I am trying to install my application(after adding column to database) in phone where previous application is also existed.

I need to upgrade my previously existed application. But I am facing issue here. The present app does not overwrite the previous application. Both applications packages names are same here.

How can I overcome this. I need the programmatic solution.

For example we have many apps like whatsapp. They have made changes to the app and releases. So, we directly update to the new version with out uninstalling our existing whatsapp. Like wise I am trying to do.

Any help would be appreciated.

When I am trying to install application, It is showing like this.

I don't want to uninstall and re-install my application again. I want to overwrite the previous application.@HemantParmar — bhavana, Nov 30 '17 at 07:03
is your applicationId in gradle is same as in AndroidManifest file? — Sunny, Nov 30 '17 at 07:05
@bhavana, you already made version changes in gradle, also re-check Manifest in case you have some version mentioned and not updated. Eg. You might be using productFlavors. — ManmeetP, Nov 30 '17 at 07:07
see here for more solution https://stackoverflow.com/q/19070816/909317 — Sunny, Nov 30 '17 at 07:13
If I do clean project, It will work . But I don't want to do this in this way. I need to do programmatically. — bhavana, Nov 30 '17 at 07:21

score 0 · Answer 1 · answered Nov 30 '17 at 07:06

0

Go to your Developer Options in under mobile setting option

then, Enable these all are

USB Debugging
Install Via USB
Verify apps over USB

these all are should be enable mode(checked mode)

then you have to try..

answered Nov 30 '17 at 07:06

Raja

2,775
2
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All these options are in Enable mode @Raja – bhavana Nov 30 '17 at 07:11
Sir, do you have any solution?@Raja – bhavana Nov 30 '17 at 09:15

score 0 · Answer 2 · edited Nov 30 '17 at 08:32

0

you can check sure to uninstall once.
you can clear cache on your phone.after that switch off the phone you can try again install.
if the above not worked can you try creating signed APK file and install that once.
clear the project once again...

edited Nov 30 '17 at 08:32

JimHawkins

4,843
8
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answered Nov 30 '17 at 07:09

raviteja

67
1
13

Sir, I don't want to uninstall my app. I want to update the app. – bhavana Nov 30 '17 at 07:16

score 0 · Answer 3 · answered Nov 30 '17 at 07:19

0

If your existing i.e installed app in phone is signed APK then to overwrite the new APK on it means without uninstall old one run new APK , you have to install signed APK of new one in sdcard and after that install that. It will work.

answered Nov 30 '17 at 07:19

Dharmishtha

1,313
10
21

It is not the new APK. It is also having the same package. @Dharmishtha – bhavana Nov 30 '17 at 07:23
@bhavana new APK means new versionName and versionCode of app . of course same package name. – Dharmishtha Nov 30 '17 at 07:25
For example we have many apps like whatsapp. They have made changes to the app and releases. So, we directly update to the new version with out uninstalling our existing whatsapp. Like wise I am trying to do. Please help me. – bhavana Nov 30 '17 at 07:39
@bhavana yes this is exactly what you want. – Dharmishtha Nov 30 '17 at 07:40
How to install in sdcard?@Dharmishtha – bhavana Nov 30 '17 at 09:13
I didn't get your answer,sorry@Dharmishtha – bhavana Nov 30 '17 at 09:14
just create signed APK then from that place (where signed APK is created) copy and paste in your phone . and then by clicking on that APK from your phone ,it will ask to install . – Dharmishtha Nov 30 '17 at 09:15

score 0 · Accepted Answer · answered Nov 30 '17 at 10:15

0

Android App Not Install. An existing package by the same name with a conflicting signature is already installed

This answer works for me thank you so much for stackoverflow.

answered Nov 30 '17 at 10:15

bhavana

63
1
8

score 0 · Answer 5 · answered Nov 30 '17 at 10:39

You might want to disable instant run Android Studio Settings or Preferences-> Build,Execution,Deployment -> Instant Run.

clean and rebuild the project again

if you are using miui phone then Turn Off MIUI optimization

Settings --> Additional settings --> Developer options --> Turn Off MIUI optimization

App does not overwrite the already existing app

5 Answers5