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Kevtho
Asked: 2020-11-29 07:54:31 +0800 CST 2020-11-29 07:54:31 +0800 CST

Compatibility of api 22 with api 19

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I have generated an application which runs very well on systems with api levels greater than 20, I wanted to try it with an android s4 mini which has an api level 19 (Kit-Kat) can someone help me to provide compatibility with this system.

I have gone through some tutorials which led me to modify the project structure and modify the compilesdk to version 19. But I have a problem with these two lines of gradle code

compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:design:23.4.0'

I tried changing the first dependency to its version 19.4.0, that is:

compile 'com.android.support:appcompat-v7:19.4.0'

and I have no problems but I can't do the same with the second dependency. Can anybody help me. The application works with the navigation drawer component

This is my full gradle file

apply plugin: 'com.android.application'

android {
compileSdkVersion 19
buildToolsVersion "24.0.2"
defaultConfig {
    applicationId "com.example.kevtho.aplicacion"
    minSdkVersion 19
    targetSdkVersion 19
    versionCode 1
    versionName "1.0"
    multiDexEnabled true
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
productFlavors {
}
}

dependencies {
compile 'com.android.support:appcompat-v7:19.4.0'
compile 'com.android.support:design:23.4.0'
compile('com.android.support:support-v4:23.4.0') {
    exclude group: 'com.android.support', module: 'support-v4'
}
compile 'com.google.android.gms:play-services:9.4.0'
testCompile 'junit:junit:4.12'
compile 'com.android.support:support-v4:23.2.1'
compile files('libs/btsdk.jar')
compile files('libs/gson-2.2.4.jar')
//compile files('libs/android-support-4.0.jar')
}
android

3 Answers

  1. You don't need to change the dependencies:

    compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:design:23.4.0'

    if you want your app to be supported for Android API 19 devices simply define :

     minSdkVersion 19

    and don't change compileSdkVersionand buildToolsVersionyou can use a version according to the dependencies you have defined

    android {
compileSdkVersion 24
buildToolsVersion "23.0.3"

    the same for targetSdkVersion:

    targetSdkVersion 23
    • 1

  2. If I'm not mistaken, what limits the ability to run the app is the minSdkVersion=19one compileSdkVersionyou indicate with which SDK you want to compile the project.

    I guess the second dependency you're referring to com.android.support:dessign:23...is the normal one that you can't set to 19, since it didn't exist then, Google removed it to provide compatibility with the Lollipop API for earlier versions.

    • 0
  3. Best Answer

    I was able to solve the problem, it turns out that the compatibility problem was due to the fact that I use multidex in my project, the solution was to add dependencies of this class to the project grade. Here I share the detailed information.

    https://developer.android.com/studio/build/multidex.html

    • 0