title: android.support.v7.widget.CardView (Fix Build Path, Edit XML, Create Class) Using Android Studio 3.4
body: <p>I've been building an app and it's been working well until I updated to the latest Android Studio. I've been getting the error
  " android.support.v7.widget.CardView (Fix Build Path, Edit XML, Create Class)"
  My cardview doesn't show the image.
  The app compiles well and installs to my phone but crashes on start up. And it was working fine yesterday. I have the lastest dependencies and I don't know why my cardviewer isn't working. Any solution? Do I need to downgrade the sdkversion? I've looked everywhere and followed a lot of fixes and now I'm literally pulling my hair off trying to get this one error to be fixed. Changing the currently dependencies to match the buildToolsVersion doesn't seem to work either. </p>
  
  <p><a href="https://i.stack.imgur.com/WGgJy.png" rel="nofollow noreferrer">A picture of my error</a></p>
  
  <p>XML</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context=".Suicune"&gt;
  
  &lt;LinearLayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="@drawable/bg"
      android:orientation="vertical"
      android:weightSum="12"&gt;
  
  
      &lt;GridLayout
          android:id="@+id/mainGrid"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="6"
          android:alignmentMode="alignMargins"
          android:columnCount="1"
          android:columnOrderPreserved="false"
          android:padding="14dp"
          android:rowCount="3"&gt;
  
          &lt;!-- Row 1 --&gt;
  
          &lt;!-- Column 1 --&gt;
          &lt;android.support.v7.widget.CardView
              android:layout_width="1dp"
              android:layout_height="1dp"
              android:layout_rowWeight="1"
              android:layout_columnWeight="1"
              android:layout_marginLeft="90dp"
              android:layout_marginRight="90dp"
              android:layout_marginBottom="16dp"
              app:cardCornerRadius="5dp"
              app:cardElevation="8dp"&gt;
  
              &lt;LinearLayout
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center_horizontal|center_vertical"
                  android:layout_margin="0dp"
                  android:orientation="vertical"&gt;
  
                  &lt;ImageView
                      android:id="@+id/suicuneframedata_button"
                      android:layout_width="wrap_content"
                      android:scaleType="fitXY"
                      android:layout_height="wrap_content"
                      android:layout_gravity="center_horizontal"
                      android:src="@drawable/framedata_button" /&gt;
  
  
              &lt;/LinearLayout&gt;
  
          &lt;/android.support.v7.widget.CardView&gt;
  
          &lt;!-- Column 2 --&gt;
          &lt;android.support.v7.widget.CardView
  
              android:layout_width="1dp"
              android:layout_height="1dp"
              android:layout_rowWeight="1"
              android:layout_columnWeight="1"
              android:layout_marginLeft="90dp"
              android:layout_marginRight="90dp"
              android:layout_marginBottom="16dp"
              app:cardCornerRadius="5dp"
              app:cardElevation="8dp"&gt;
  
              &lt;LinearLayout
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center_horizontal|center_vertical"
                  android:layout_margin="0dp"
                  android:orientation="vertical"&gt;
  
                  &lt;ImageView
                      android:id="@+id/suicunecombosheets_button"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:scaleType="fitXY"
                      android:layout_gravity="center_horizontal"
                      android:src="@drawable/combosheets_button" /&gt;
  
  
              &lt;/LinearLayout&gt;
  
          &lt;/android.support.v7.widget.CardView&gt;
  
  
          &lt;android.support.v7.widget.CardView
              android:layout_width="1dp"
              android:layout_height="1dp"
              android:layout_rowWeight="1"
              android:layout_columnWeight="1"
              android:layout_marginLeft="90dp"
              android:layout_marginRight="90dp"
              android:layout_marginBottom="16dp"
              app:cardCornerRadius="5dp"
              app:cardElevation="8dp"&gt;
  
              &lt;LinearLayout
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center_horizontal|center_vertical"
                  android:layout_margin="0dp"
                  android:orientation="vertical"&gt;
  
                  &lt;ImageView
                      android:id="@+id/suicunenotableplayers_button"
                      android:layout_width="wrap_content"
                      android:scaleType="fitXY"
                      android:layout_height="wrap_content"
                      android:layout_gravity="center_horizontal"
                      android:src="@drawable/notableplayers_button" /&gt;
  
  
              &lt;/LinearLayout&gt;
  
          &lt;/android.support.v7.widget.CardView&gt;
  
      &lt;/GridLayout&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Java Class</p>
  
  <pre><code>package com.example.sayafkadam.ptdxassault;
  
   import android.content.Intent;
   import android.os.Bundle;
   import android.view.View;
   import android.widget.ImageView;
  
   import androidx.appcompat.app.AppCompatActivity;
  
   public class Suicune extends AppCompatActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_suicune);
  
      getSupportActionBar().setTitle("Suicune Database");
      getSupportActionBar().setDisplayHomeAsUpEnabled(true);
  
      ImageView FrameData;
      ImageView ComboSheets;
      ImageView NotablePlayers;
  
  
      FrameData = (ImageView) findViewById(R.id.suicuneframedata_button);
      FrameData.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              Intent intentLoadSuicuneInfo = new Intent(Suicune.this,           
      SuicuneFD.class);
              startActivity(intentLoadSuicuneInfo);
          }
      });
  
  
      NotablePlayers = (ImageView) findViewById(R.id.suicunenotableplayers_button);
      NotablePlayers.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              Intent intentLoadNotablePlayers = new Intent(Suicune.this, 
   SuicuneNP.class);
              startActivity(intentLoadNotablePlayers);
          }
      });
   }
   }
  </code></pre>
  
  <p>My Gradle</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
   android {
  compileSdkVersion 28
  defaultConfig {
      applicationId "com.example.sayafkadam.ptdxassault"
      minSdkVersion 15
      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'
      }
   }
   buildToolsVersion = '28.0.3'
   }
  
    dependencies {
  implementation fileTree(dir: 'libs', include: ['*.jar'])
  implementation 'com.android.support:appcompat-v7:28.0.0'
  implementation 'com.android.support:cardview-v7:28.0.0'
  implementation 'com.android.support:recyclerview-v7:28.0.0'
  implementation 'com.android.support:gridlayout-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'
  implementation 'com.github.chrisbanes:PhotoView:2.2.0'
  implementation 'com.github.barteksc:android-pdf-viewer:3.1.0-beta.1'
  implementation 'gr.pantrif:easy-android-splash-screen:0.0.1'
  implementation 'androidx.appcompat:appcompat:1.0.2'
  implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
  
   }
  </code></pre>