AndroidRuntime：致命异常

Question

 Gradle sync : No error Rebuild Project : No error After hitting RUN >> Installing app through ADB but unable to launch application. Forced stopped 

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.bookcircuit"
        minSdkVersion 22
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        useLibrary 'org.apache.http.legacy'
        manifestPlaceholders = [onesignal_app_id               : "5c3d7b9b-1874-463f-8081-1c3439ccb3ea",
                                onesignal_google_project_number: "REMOTE"]
        multiDexEnabled true
        compileOptions {
            sourceCompatibility JavaVersion.VERSION_1_8
            targetCompatibility JavaVersion.VERSION_1_8
        }

 Logcat: 2019-05-26 01:29:47.773 29431-29431/com.example.bookcircuit E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.bookcircuit, PID: 29431 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.bookcircuit/com.example.bookcircuit.SplashActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2928) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3063) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1823) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:198) at android.app.ActivityThread.main(ActivityThread.java:6729) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.constraintlayout.ConstraintLayout" on path: DexPathList[[zip file "/data/app/com.example.bookcircuit-UeVp2v3GMHxcnEsLL2108Q==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.bookcircuit-UeVp2v3GMHxcnEsLL2108Q==/lib/arm64, /system/lib64]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134) 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 android.view.LayoutInflater.inflate(LayoutInflater.java:374) at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:431) at android.app.Activity.setContentView(Activity.java:2771) at com.example.bookcircuit.SplashActivity.onCreate(SplashActivity.java:25) at android.app.Activity.performCreate(Activity.java:7136) at android.app.Activity.performCreate(Activity.java:7127) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1272) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2908) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3063) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1823) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:198) at android.app.ActivityThread.main(ActivityThread.java:6729) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) AndroidManifest.xml : <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" package="com.example.bookcircuit"> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <application tools:node="replace" android:name=".init.CustomApplication" android:allowBackup="true" android:icon="@mipmap/logo" android:label="@string/app_name" android:roundIcon="@mipmap/logo" android:supportsRtl="true" android:theme="@style/AppTheme" tools:ignore="GoogleAppIndexingWarning"> <meta-data android:name="AA_DB_NAME" android:value="MyDatabase.db" /> <meta-data android:name="AA_DB_VERSION" android:value="5" /> <meta-data android:name="AA_MODELS" android:value="com.example.bookcircuit.db.Notification" /> <!-- Add the following to your AndroidManifest.xml to prevent the launching of your main Activity if you are calling startActivity above. --> <meta-data android:name="com.onesignal.NotificationOpened.DEFAULT" android:value="DISABLE" /> <activity android:name=".SplashActivity" android:screenOrientation="portrait" android:theme="@android:style/Theme.NoTitleBar.Fullscreen"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".Register" android:theme="@style/Theme.AppCompat.NoActionBar" android:windowSoftInputMode="stateHidden" /> <activity android:name=".MainActivity" android:theme="@style/WhiteTheme" /> <activity android:name=".LoginActivity" android:theme="@style/Theme.AppCompat.NoActionBar" android:windowSoftInputMode="stateHidden" /> <activity android:name=".HelpCenter" android:theme="@style/WhiteTheme" /> <activity android:name=".Profile" android:theme="@style/WhiteTheme" /> <activity android:name=".Cart" android:theme="@style/WhiteTheme" /> <activity android:name=".UpdateData" android:theme="@style/WhiteTheme" android:windowSoftInputMode="stateHidden" /> <activity android:name=".ForgotPassword" android:theme="@style/Theme.AppCompat.NoActionBar" android:windowSoftInputMode="stateHidden" /> <activity android:name=".NotificationActivity" android:theme="@style/WhiteTheme" /> <activity android:name=".prodcutscategory.Cards" android:theme="@style/WhiteTheme" /> <activity android:name=".IndividualProduct" android:theme="@style/WhiteTheme" /> <activity android:name=".Wishlist" android:theme="@style/WhiteTheme" /> <activity android:name=".OrderDetails" android:theme="@style/WhiteTheme" /> <activity android:name=".OrderPlaced" android:theme="@style/WhiteTheme" /> <activity android:name=".prodcutscategory.Tshirts" android:theme="@style/WhiteTheme" /> <activity android:name=".prodcutscategory.Bags" android:theme="@style/WhiteTheme" /> <activity android:name=".prodcutscategory.Calendars" android:theme="@style/WhiteTheme" /> <activity android:name=".prodcutscategory.Keychains" android:theme="@style/WhiteTheme" /> <activity android:name=".prodcutscategory.Stationary" android:theme="@style/WhiteTheme" /> <activity android:name=".WelcomeActivity" android:theme="@style/AppTheme.NoActionBar"/> </application> MainActivity : public class MainActivity extends AppCompatActivity { private SliderLayout sliderShow; private Drawer result; private CrossfadeDrawerLayout crossfadeDrawerLayout = null; //to get user session data private UserSession session; private HashMap<String, String> user; private String name, email, photo, mobile; private String first_time; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Typeface typeface = ResourcesCompat.getFont(this, R.font.blacklist); TextView appname = findViewById(R.id.appname); appname.setTypeface(typeface); //check Internet Connection new CheckInternetConnection(this).checkConnection(); //retrieve session values and display on listviews getValues(); //Navigation Drawer with toolbar inflateNavDrawer(); //ImageSLider inflateImageSlider(); if (session.getFirstTime()) { //tap target view tapview(); session.setFirstTime(false); } } private void tapview() { new TapTargetSequence(this) .targets( TapTarget.forView(findViewById(R.id.notifintro), "Notifications", "Latest offers will be available here !") .targetCircleColor(R.color.colorAccent) .titleTextColor(R.color.colorAccent) .titleTextSize(25) .descriptionTextSize(15) .descriptionTextColor(R.color.accent) .drawShadow(true) // Whether to draw a drop shadow or not .cancelable(false) // Whether tapping outside the outer circle dismisses the view .tintTarget(true) .transparentTarget(true) .outerCircleColor(R.color.first), TapTarget.forView(findViewById(R.id.view_profile), "Profile", "You can view and edit your profile here !") .targetCircleColor(R.color.colorAccent) .titleTextColor(R.color.colorAccent) .titleTextSize(25) .descriptionTextSize(15) .descriptionTextColor(R.color.accent) .drawShadow(true) // Whether to draw a drop shadow or not .cancelable(false) // Whether tapping outside the outer circle dismisses the view .tintTarget(true) .transparentTarget(true) .outerCircleColor(R.color.third), TapTarget.forView(findViewById(R.id.cart), "Your Cart", "Here is Shortcut to your cart !") .targetCircleColor(R.color.colorAccent) .titleTextColor(R.color.colorAccent) .titleTextSize(25) .descriptionTextSize(15) .descriptionTextColor(R.color.accent) .drawShadow(true) .cancelable(false)// Whether tapping outside the outer circle dismisses the view .tintTarget(true) .transparentTarget(true) .outerCircleColor(R.color.second), TapTarget.forView(findViewById(R.id.visitingcards), "Categories", "Product Categories have been listed here !") .targetCircleColor(R.color.colorAccent) .titleTextColor(R.color.colorAccent) .titleTextSize(25) .descriptionTextSize(15) .descriptionTextColor(R.color.accent) .drawShadow(true) .cancelable(false)// Whether tapping outside the outer circle dismisses the view .tintTarget(true) .transparentTarget(true) .outerCircleColor(R.color.fourth)) .listener(new TapTargetSequence.Listener() { // This listener will tell us when interesting(tm) events happen in regards // to the sequence @Override public void onSequenceFinish() { session.setFirstTime(false); Toasty.success(MainActivity.this, " You are ready to go !", Toast.LENGTH_SHORT).show(); } @Override public void onSequenceStep(TapTarget lastTarget, boolean targetClicked) { } @Override public void onSequenceCanceled(TapTarget lastTarget) { // Boo } }).start(); } private void getValues() { //create new session object by passing application context session = new UserSession(getApplicationContext()); //validating session session.isLoggedIn(); //get User details if logged in user = session.getUserDetails(); name = user.get(UserSession.KEY_NAME); email = user.get(UserSession.KEY_EMAIL); mobile = user.get(UserSession.KEY_MOBiLE); photo = user.get(UserSession.KEY_PHOTO); } private void inflateImageSlider() { // Using Image Slider ----------------------------------------------------------------------- sliderShow = findViewById(R.id.slider); //populating Image slider ArrayList<String> sliderImages = new ArrayList<>(); sliderImages.add("https://www.printstop.co.in/images/flashgallary/large/Business_stationery_home_banner.jpg"); sliderImages.add("https://www.printstop.co.in/images/flashgallary/large/calendar-diaries-home-banner.jpg"); sliderImages.add("https://www.printstop.co.in/images/flashgallary/large/calendar-diaries-banner.jpg"); sliderImages.add("https://www.printstop.co.in/images/flashgallary/large/free-visiting-cards-home-banner.JPG"); for (String s : sliderImages) { DefaultSliderView sliderView = new DefaultSliderView(this); sliderView.image(s); sliderShow.addSlider(sliderView); } sliderShow.setPresetIndicator(SliderLayout.PresetIndicators.Right_Bottom); } private void inflateNavDrawer() { //set Custom toolbar to activity ----------------------------------------------------------- Toolbar toolbar = findViewById(R.id.toolbar); setSupportActionBar(toolbar); // Create the AccountHeader ---------------------------------------------------------------- //Profile Making IProfile profile = new ProfileDrawerItem() .withName(name) .withEmail(email) .withIcon(photo); AccountHeader headerResult = new AccountHeaderBuilder() .withActivity(this) .withHeaderBackground(R.drawable.gradient_background) .addProfiles(profile) .withCompactStyle(true) .build(); //Adding nav drawer items ------------------------------------------------------------------ PrimaryDrawerItem item1 = new PrimaryDrawerItem().withIdentifier(1).withName(R.string.home).withIcon(R.drawable.home); PrimaryDrawerItem item2 = new PrimaryDrawerItem().withIdentifier(2).withName(R.string.myprofile).withIcon(R.drawable.profile); PrimaryDrawerItem item3 = new PrimaryDrawerItem().withIdentifier(3).withName(R.string.wishlist).withIcon(R.drawable.wishlist); PrimaryDrawerItem item4 = new PrimaryDrawerItem().withIdentifier(4).withName(R.string.cart).withIcon(R.drawable.cart); PrimaryDrawerItem item5 = new PrimaryDrawerItem().withIdentifier(5).withName(R.string.logout).withIcon(R.drawable.logout); SecondaryDrawerItem item7 = new SecondaryDrawerItem().withIdentifier(7).withName("Offers").withIcon(R.drawable.tag); SecondaryDrawerItem item8 = new SecondaryDrawerItem().withIdentifier(8).withName(R.string.aboutapp).withIcon(R.drawable.credits); SecondaryDrawerItem item9 = new SecondaryDrawerItem().withIdentifier(9).withName(R.string.feedback).withIcon(R.drawable.feedback); SecondaryDrawerItem item10 = new SecondaryDrawerItem().withIdentifier(10).withName(R.string.helpcentre).withIcon(R.drawable.helpccenter); SecondaryDrawerItem item12 = new SecondaryDrawerItem().withIdentifier(12).withName("App Tour").withIcon(R.drawable.tour); SecondaryDrawerItem item13 = new SecondaryDrawerItem().withIdentifier(13).withName("Explore").withIcon(R.drawable.explore); //creating navbar and adding to the toolbar ------------------------------------------------ result = new DrawerBuilder() .withActivity(this) .withToolbar(toolbar) .withHasStableIds(true) .withDrawerLayout(R.layout.crossfade_drawer) .withAccountHeader(headerResult) .withDrawerWidthDp(72) .withGenerateMiniDrawer(true) .withTranslucentStatusBar(true) .withActionBarDrawerToggleAnimated(true) .addDrawerItems( item1, item2, item3, item4, item5, new DividerDrawerItem(), item7, item8, item9, item10,new DividerDrawerItem(),item12,item13 ) .withOnDrawerItemClickListener(new Drawer.OnDrawerItemClickListener() { @Override public boolean onItemClick(View view, int position, IDrawerItem drawerItem) { switch (position) { case 1: if (result != null && result.isDrawerOpen()) { result.closeDrawer(); } break; case 2: startActivity(new Intent(MainActivity.this, Profile.class)); break; case 3: startActivity(new Intent(MainActivity.this, Wishlist.class)); break; case 4: startActivity(new Intent(MainActivity.this, Cart.class)); break; case 5: session.logoutUser(); finish(); break; case 7: startActivity(new Intent(MainActivity.this, NotificationActivity.class)); break; case 8: new LibsBuilder() .withFields(R.string.class.getFields()) .withActivityTitle(getString(R.string.about_activity_title)) .withAboutIconShown(true) .withAboutAppName(getString(R.string.app_name)) .withAboutVersionShown(true) .withLicenseShown(true) .withAboutSpecial1(getString(R.string.domain)) .withAboutSpecial1Description(getString(R.string.website)) .withAboutSpecial2(getString(R.string.licence)) .withAboutSpecial2Description(getString(R.string.licencedesc)) .withAboutSpecial3(getString(R.string.changelog)) .withAboutSpecial3Description(getString(R.string.changes)) .withShowLoadingProgress(true) .withAboutDescription(getString(R.string.about_activity_description)) .withActivityStyle(Libs.ActivityStyle.LIGHT_DARK_TOOLBAR) .start(MainActivity.this); break; case 9: new EasyFeedback.Builder(MainActivity.this) .withEmail("beingdevofficial@gmail.com") .withSystemInfo() .build() .start(); break; case 10: startActivity(new Intent(MainActivity.this, HelpCenter.class)); break; case 12: session.setFirstTimeLaunch(true); startActivity(new Intent(MainActivity.this, WelcomeActivity.class)); finish(); break; case 13: if (result != null && result.isDrawerOpen()) { result.closeDrawer(); } tapview(); break; default: Toast.makeText(MainActivity.this, "Default", Toast.LENGTH_LONG).show(); } return true; } }) .build(); //Setting crossfader drawer------------------------------------------------------------ crossfadeDrawerLayout = (CrossfadeDrawerLayout) result.getDrawerLayout(); //define maxDrawerWidth crossfadeDrawerLayout.setMaxWidthPx(DrawerUIUtils.getOptimalDrawerWidth(this)); //add second view (which is the miniDrawer) final MiniDrawer miniResult = result.getMiniDrawer(); //build the view for the MiniDrawer View view = miniResult.build(this); //set the background of the MiniDrawer as this would be transparent view.setBackgroundColor(UIUtils.getThemeColorFromAttrOrRes(this, com.mikepenz.materialdrawer.R.attr.material_drawer_background, com.mikepenz.materialdrawer.R.color.material_drawer_background)); //we do not have the MiniDrawer view during CrossfadeDrawerLayout creation so we will add it here crossfadeDrawerLayout.getSmallView().addView(view, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); //define the crossfader to be used with the miniDrawer. This is required to be able to automatically toggle open / close miniResult.withCrossFader(new ICrossfader() { @Override public void crossfade() { boolean isFaded = isCrossfaded(); crossfadeDrawerLayout.crossfade(400); //only close the drawer if we were already faded and want to close it now if (isFaded) { result.getDrawerLayout().closeDrawer(GravityCompat.START); } } @Override public boolean isCrossfaded() { return crossfadeDrawerLayout.isCrossfaded(); } }); } @Override protected void onStop() { sliderShow.stopAutoCycle(); super.onStop(); } @Override public void onBackPressed() { if (result != null && result.isDrawerOpen()) { result.closeDrawer(); } else { super.onBackPressed(); } } public void viewProfile(View view) { startActivity(new Intent(MainActivity.this, Profile.class)); } public void viewCart(View view) { startActivity(new Intent(MainActivity.this, Cart.class)); } @Override protected void onResume() { //check Internet Connection new CheckInternetConnection(this).checkConnection(); sliderShow.startAutoCycle(); super.onResume(); } public void Notifications(View view) { startActivity(new Intent(MainActivity.this, NotificationActivity.class)); } public void cardsActivity(View view) { startActivity(new Intent(MainActivity.this, Cards.class)); } public void tshirtActivity(View view) { startActivity(new Intent(MainActivity.this, Tshirts.class)); } public void bagsActivity(View view) { startActivity(new Intent(MainActivity.this, Bags.class)); } public void stationaryAcitivity(View view) { startActivity(new Intent(MainActivity.this, Stationary.class)); } public void calendarsActivity(View view) { startActivity(new Intent(MainActivity.this, Calendars.class)); } public void keychainsActivity(View view) { startActivity(new Intent(MainActivity.this, Keychains.class)); } } 

Answer 1

只需添加您的应用程序（说明模块：应用程序）级别build.gradle

implementation 'com.android.support.constraint:constraint-layout:1.1.3'

在你的日志数据中，我们可以清楚地看到

     "Caused by: android.view.InflateException: Binary XML file line #2: Binary 
     XML file line #2: Error inflating class 
     androidx.constraintlayout.ConstraintLayout"

在实现约束布局库之后，只需同步并清理您的项目。