Can't import android.support.v7 (appcompat) - Unresolved Library

android gradle import build.gradle libraries

10,067

Solution 1

I'm using these dependencies

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

There imports

import android.support.v4.view.MenuItemCompat
import android.support.v7.widget.ShareActionProvider

And there's no red.

Try to clean the code as well

As @Mohsen said, you can also try to do this

Solution 2

So in my code it can't import android.support.v7.widget.ShareActionProvider The v7 is in Red because, it can't be resolved

I wish that was the only issue in your codes. You've added:

implementation 'com.google.android:support-v4:r7'
implementation 'com.android.support:appcompat-v7:28.0.+' // Use specific version like 28.0.0 in future for this

Which refers to v4 and v7 AppCompat but your Toolbar and the tests + ConstraintLayout are using AndroidX dependencies. This is actually weird and confusing even to me!

For using ShareActionProvider which is available with AppCompat, you'll need to make sure your app is migrated to AndroidX or not first!

I believe this is happening because it seems like your project is migrated to AndroidX and this is confusing the IDE to use AppCompat or AndroidX.

Simply, go to Refactor, Select migrate to AppCompat if you're trying to use V7 dependencies.

10,067

ConnectionistSystems

Updated on June 04, 2022

Comments

ConnectionistSystems about 2 years

I tried to import this support library into my project but can't get it to work.

First of all I can't find it. When I hit the + button on the Dependencies tab and search for it. I have found android.support.v4 but I need v7 as well. I read somewhere that the library might be deprecated.

So in my code it can't import android.support.v7.widget.ShareActionProvider The v7 is in Red because, it can't be resolved. I followed the direction on how to add a library. But still can't solve the issue. I did normal steps as clean, sync gradle files, invalidate links, etc...

Here is some of my code from mainactivity

    import android.content.Intent
    import android.os.Bundle
    import android.support.v4.view.MenuItemCompat
    import android.view.Menu
    import android.view.MenuItem
    //import androidx.appcompat.widget.ShareActionProvider
    import androidx.appcompat.widget.Toolbar

    //import androidx.core.view.MenuItemCompat
    //import android.support.v4.view.MenuItemCompat
    //import androidx.core.view.MenuItemCompat.getActionProvider

    import android.support.v7.app.AppCompatActivity
    import android.support.v7.widget.ShareActionProvider
    //import android.widget.ShareActionProvider



    class MainActivity : AppCompatActivity() {
        private var shareActionProvider : ShareActionProvider? = null

    import android.content.Intent
    import android.os.Bundle
    import android.support.v4.view.MenuItemCompat
    import android.view.Menu
    import android.view.MenuItem
    //import androidx.appcompat.widget.ShareActionProvider
    import androidx.appcompat.widget.Toolbar

    //import androidx.core.view.MenuItemCompat
    //import android.support.v4.view.MenuItemCompat
    //import androidx.core.view.MenuItemCompat.getActionProvider

    import android.support.v7.app.AppCompatActivity
    import android.support.v7.widget.ShareActionProvider
    //import android.widget.ShareActionProvider


    class MainActivity : AppCompatActivity() {
        private var shareActionProvider : ShareActionProvider? = null

        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            setContentView(R.layout.activity_main)
            val toolbar = findViewById(R.id.toolbar) as Toolbar
            setSupportActionBar(toolbar)
        }

        override fun onCreateOptionsMenu(menu : Menu): Boolean {
            getMenuInflater().inflate(R.menu.menu_main, menu)
            val menuItem = menu.findItem(R.id.action_share) as MenuItem
            shareActionProvider = MenuItemCompat.getActionProvider(menuItem) as ShareActionProvider
            setShareActionIntent("Want to join me for pizza?")
            return super.onCreateOptionsMenu(menu)
        }

        private fun setShareActionIntent(text : String) {
            val intent = Intent(Intent.ACTION_SEND)
            intent.type = "text/plain"
            intent.putExtra(Intent.EXTRA_TEXT, text)
            shareActionProvider!!.setShareIntent(intent)
        }

        override fun onOptionsItemSelected(item : MenuItem) : Boolean {
            when(item.itemId) {
                R.id.action_create_order -> {
                    val intent = Intent(this, OrderActivity::class.java)
                    startActivity(intent)
                    return true
                }
                else -> return super.onOptionsItemSelected(item)
            }
}
}

This my gradle.build file

 // Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.2.71'
    repositories {
        google()
        jcenter()
        maven { url '../pluginrepo' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.0-beta05'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

This is my app (build.gradle) file

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.gandalf.bitsandpizza"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.0-alpha3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha3'
    //    implementation 'com.android.support:support-core-utils:27.0.0'
    implementation 'com.google.android:support-v4:r7'
    implementation 'com.android.support:appcompat-v7:28.0.+'
    //    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:support-core-utils:28.0.+'
}

This is based on Refactoring suggested in answer.

The issue is now resolved. This is the updated gradle.build file from app

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.some.name"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

Skizo-ozᴉʞS over 5 years

Why you don't use this instead: import android.widget.ShareActionProvider; or this one : import android.support.v7.widget.ShareActionProvider;
ConnectionistSystems over 5 years

So if I use the aforementioned import instead of v7. Then this line of code won't work, because it can't find getActionProvider. shareActionProvider = MenuItemCompat.getActionProvider(menuItem) as ShareActionProvider
Skizo-ozᴉʞS over 5 years

What is in red?
ConnectionistSystems over 5 years

getActionProvider
Skizo-ozᴉʞS over 5 years

See my update on my answer
ʍѳђઽ૯ท over 5 years

@ConnectionistSystems Now you have duplicate imports. Remove them all and import them again with the appcompat. It should work then

ConnectionistSystems over 5 years

For the first option v7 can't be resolved. For the second option getActionProvider is unresolved reference. shareActionProvider = MenuItemCompat.getActionProvider(menuItem) as ShareActionProvider
ʍѳђઽ૯ท over 5 years

Yes, because you didn't migrated to AndroidX that's why. Check the OP's Activity imports of Toolbar and AppCompat. I've tried to explain them all in my answer, please check that too.
Skizo-ozᴉʞS over 5 years

Then @ConnectionistSystems make sure you have Android Studio 3.2 and then Refactor to AppCompat
ConnectionistSystems over 5 years

Okay. I did migrate to AppCompat as suggested. I still have red on v7 which is why I tired to use AndroidX instead. I also did clean and sync gradle file.
Skizo-ozᴉʞS over 5 years

What is red? Can you post a screen shot?
ConnectionistSystems over 5 years

I uploaded an image in original question. I don't know how to do it here.
Skizo-ozᴉʞS over 5 years

Remove your import of Androidx AppCompatActivity it should be only this one :import android.support.v7.app.AppCompatActivity And make sure your gradle is like my answer the same implementations
Skizo-ozᴉʞS over 5 years

Tried it @ConnectionistSystems?
ConnectionistSystems over 5 years

I want to thank everyone for their assistance. I tired what was suggested. I changed my gradle file as was suggested and cleaned the project. It is still the same and the biggest issue is v7 is still red. I tried to refactor to AppCompat again, still nothing changed.
Skizo-ozᴉʞS over 5 years

Did you remove the androidx import?
ConnectionistSystems over 5 years

I uploaded two more images at the bottom of the question
Skizo-ozᴉʞS over 5 years

Change this line testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" aswell... can you upload your code to github or something so I can take a look deeply? or maybe TeamViewer
ConnectionistSystems over 5 years

I changed the gradle.build file. I also uploaded to github. github.com/ConnectionistSystems/BitsandPizza Thank You!
Skizo-ozᴉʞS over 5 years

Ok, I did some changes, it's working now, you can see in the commit what I've changed... it was lot of stuff hahaha :D
Skizo-ozᴉʞS over 5 years

Oh I'm not able to push, can you invite me ?
Skizo-ozᴉʞS over 5 years

nvm I'll create a new project and upload it and then you can download and see what's different from yours
ConnectionistSystems over 5 years

Hello @Skizo-ozᴉʞS Thanks for looking at the code. I wanted to add to the repository but I don't know your email address. I tried implementing the changes you did. I see how you made changes mainly to MainActivity. I still however have the same issue. The V7 is red. Please see the latest image attached with the question. I can't find appcompatv7 to download. Perhaps you have it already downloaded in Android Studio. Thanks again for your time.
Skizo-ozᴉʞS over 5 years

@ConnectionistSystems Give me your email and I'll update your code, I did not change only the MainActivity....
ConnectionistSystems over 5 years

The issue is now resolved. This is the updated build.gradle file. Thanks @Skizo-ozᴉʞS
ConnectionistSystems over 5 years

I have less than 15 reputation, therefore I can't up/like any of the posted answers. Thanks!
Skizo-ozᴉʞS over 5 years

But you do not need reputation to mark my answer as a correct. Feel free to upvote and mark my answer as a correct if it worked!