Android code crashes when opening in an emulator

BaRud :

I am very new to java, but for some reason, trying to create an app the app is building properly in android studio, but, when trying to open in an emulator, it is crashing. This is my complete code

is the zip of the app, with I guess, the main error is

final View rootView = inflater.inflate(R.layout.fragment_sun, container, false); 

Logcat: Error

2019-07-25 10:42:48.002 5383-5383/com.example.phocast E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.phocast, PID: 5383
    android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class android.support.v7.widget.RecyclerView
    Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class android.support.v7.widget.RecyclerView
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v7.widget.RecyclerView" on path: DexPathList[[zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/base.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_resources_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.phocast-j1KYRRVBUGO2ddQzmNBB8w==/lib/x86, /system/lib, /vendor/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at android.view.LayoutInflater.createView(LayoutInflater.java:606)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
        at com.example.phocast.ui.main.SunFragment.onCreateView(SunFragment.java:69)
        at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2439)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1460)
        at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1784)

on line 69 of SunFragment.java code.

I don't understand what went wrong in the XML.

The corresponding XML is:

    <?xml version="1.0" encoding="utf-8"?>
    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_recycler_view"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        xmlns:android="http://schemas.android.com/apk/res/android" />

can someone please check?

build.gradel

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.1"
    defaultConfig {
        applicationId "com.example.phocast"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'com.google.android.material:material:1.0.0'
    implementation'com.google.android.gms:play-services-places:17.0.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    implementation 'org.shredzone.commons:commons-suncalc:2.6'
    implementation 'androidx.cardview:cardview:1.0.0'
    implementation 'androidx.recyclerview:recyclerview:1.0.0'
    implementation 'com.github.bumptech.glide:glide:3.7.0'
    implementation 'com.google.android.gms:play-services-maps:17.0.0'
    implementation 'com.google.android.gms:play-services-location:17.0.0'
}

ρяσѕρєя K :

Use

androidx.recyclerview.widget.RecyclerView

in fragment_sun.xml instead of

android.support.v7.widget.RecyclerView

Because as in build.gradle dependency is androidx.recyclerview:recyclerview:1.0.0 but in SunFragment RecyclerView is imported from androidx