I'm getting the same error and cant seem to understand where it comes from. tried messing with the constraints but im keep coming back to this specific problem.
Error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.rapp, PID: 11288
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.rapp/com.example.rapp.ui.CheckListActivity}: android.view.InflateException: Binary XML file line #11: Binary XML file line #11: Error inflating class ConstraintLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: android.view.InflateException: Binary XML file line #11: Binary XML file line #11: Error inflating class ConstraintLayout
Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class ConstraintLayout
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.ConstraintLayout" on path: DexPathList[[zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/base.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_resources_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/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.onCreateView(LayoutInflater.java:703)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:68)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:720)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:788)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:866)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.rapp.ui.CheckListActivity.onCreate(CheckListActivity.java:62)
E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7009)
at android.app.Activity.performCreate(Activity.java:7000)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Suppressed: java.io.IOException: No original dex files found for dex location /data/app/com.example.rapp-re4jZb52NhxBq505zHulTA==/split_lib_resources_apk.apk
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:353)
at dalvik.system.DexFile.<init>(DexFile.java:100)
at dalvik.system.DexFile.<init>(DexFile.java:74)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:374)
at dalvik.system.DexPathList.makeDexElements(DexPathList.java:337)
at dalvik.system.DexPathList.<init>(DexPathList.java:157)
at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:65)
at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:64)
at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:73)
at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:88)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:69)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:35)
at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:693)
at android.app.LoadedApk.getClassLoader(LoadedApk.java:727)
at android.app.LoadedApk.getResources(LoadedApk.java:954)
at android.app.ContextImpl.createAppContext(ContextImpl.java:2270)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5639)
at android.app.ActivityThread.-wrap1(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1656)
... 6 more
Application terminated.
The XML file activity_check_list.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:id="@+id/constraintLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.CheckListActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.constraint.ConstraintLayout
android:id="@+id/view_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
/>
</ScrollView>
</android.support.constraint.ConstraintLayout>
And the class that showed up in the error CheckListActivity.java:
package com.example.rapp.ui;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.support.constraint.ConstraintLayout;
import android.support.v7.app.AppCompatActivity;
import com.example.rapp.R;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
public class CheckListActivity extends AppCompatActivity implements CheckListView {
// states for buttons.
public static final int ADD_NEW_ITEM = 1;
public static final int REMOVE_LAST_ITEM = 2;
public static final int GOT_FOCUS = 3;
public static final int REMOVE_ITEM = 4;
ArrayList<String> ingredientNames = new ArrayList<>(); // list of ingredients.
private ConstraintLayout container;
private CheckListPresenter presenter;
private String jsonArrayStr;
// method to read json from assets folder.
public String loadJSONFromAsset(Context context) {
String json = null;
try {
InputStream is = context.getAssets().open("foods.json");
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
json = new String(buffer, StandardCharsets.UTF_8);
}
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
System.out.println("success!");
return json;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
jsonArrayStr = savedInstanceState.getString("json_array", "");
}
//**error is happening here. **
setContentView(R.layout.activity_check_list);
container = findViewById(R.id.view_container);
presenter = new CheckListPresenterImpl(this, getApplicationContext());
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putString("json_array", presenter.getCheckListData());
}
@Override
public ConstraintLayout getContainer() {
return container;
}
@Override
public String getSavedData() {
return jsonArrayStr;
}
}
I tried adding compile 'com.android.support.constraint:constraint-layout:1.0.2' to the xml but with no success.
EDIT: here is the gradle.build file (tried constraint-layout 1.1.2):
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
buildToolsVersion "29.0.1"
defaultConfig {
applicationId "com.example.rapp"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
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'
}
used the answer given here: https://stackoverflow.com/a/53061877/5357676 unchecked "Enable Instant Run to hot swap code/resource changes on deploy" in Setting > Build, Execution, Deployment > Instant run