Android Studio Suddenly started to display unable to resolve com.android.support...25.0.0 error messages and all of my java files are erroneous now?
android, android-api-levels, android-gradle-plugin, android-support-library
Solution
Open your android SDK manager (from C:\Users\youruseraccount\AppData\Local\Android\sdk) and update following to latest versions in,
Tools section section
Android SDK Tool
Android SDK Platform-Tools
Android SDK Build tool
Android 7.1.1 (API 25) section
- SDK Platform
Extras Section
- Android Support Repository
- Android Support Library
Then update your gradle file accordingly.
Problem
My project was working very fine, but until one day, when I uploaded my project to github. I don't know if this issue is related to that but today when I compiled my android studio project, it started showing me these 4 horrible errors. I have tried most of the google results but no help! Error:Failed to resolve: com.android.support:cardview-v7:25.0.0 Error:Failed to resolve: com.android.support:customtabs:25.0.0 Error:Failed to resolve: com.android.support:appcompat-v7:25.0.0 Error:Failed to resolve: com.android.support:support-v4:25.0.0 This is the screenshot of android studio screen if it helps! This is my app level `build.gradle` file: ``` apply plugin: 'com.android.application' repositories { mavenLocal() mavenCentral() flatDir { dirs 'libs' } } android { compileSdkVersion 23 buildToolsVersion "23.0.3" defaultConfig { applicationId "com.google.firebase.codelab.friendlychat" minSdkVersion 22 targetSdkVersion 23 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } packagingOptions { exclude 'META-INF/LICENSE' exclude 'META-INF/LICENSE-FIREBASE.txt' exclude 'META-INF/NOTICE' } productFlavors { } } dependencies { compile fileTree(include: ['*.jar'], dir: 'libs') testCompile 'junit:junit:4.12' compile 'com.android.support:design:23.1.1' compile 'com.firebase:firebase-client-android:2.5.0' compile 'com.github.bumptech.glide:glide:3.6.1' compile 'de.hdodenhof:circleimageview:1.3.0' compile 'com.android.support:appcompat-v7:23.1.1' // Google compile 'com.google.android.gms:play-services-auth:9.4.0' // Firebase compile 'com.google.firebase:firebase-database:9.4.0' compile 'com.google.firebase:firebase-auth:9.4.0' compile 'com.google.firebase:firebase-config:9.4.0' compile 'com.google.android.gms:play-services-appinvite:9.4.0' compile 'com.google.firebase:firebase-messaging:9.4.0' compile 'com.google.android.gms:play-services-ads:9.4.0' compile 'com.google.firebase:firebase-database:9.2.1' compile 'com.google.firebase:firebase-messaging:9.2.1' compile 'com.google.firebase:firebase-crash:9.4.0' // Firebase UI compile 'com.firebaseui:firebase-ui-database:0.4.0' // Testing dependencies androidTestCompile 'junit:junit:4.12' androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.1' androidTestCompile 'com.android.support.test:runner:0.4.1' androidTestCompile 'com.android.support:support-annotations:23.4.0' compile 'com.facebook.android:facebook-android-sdk:[4,5)' //facebook } apply plugin: 'com.google.gms.google-services' ``` And this is my project level `build.gradle` file: ``` buildscript { repositories { jcenter() mavenLocal() } dependencies { classpath 'com.android.tools.build:gradle:2.2.2' classpath 'com.google.gms:google-services:3.0.0' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } allprojects { repositories { jcenter() mavenLocal() } } task clean(type: Delete) { delete rootProject.buildDir } ``` Why I am starting to get these errors suddenly. Thanks in advance!