Launching lib\main.Dart on HTC One M9PLUS in debug mode... Initializing gradle... Resolving dependencies... Gradle task 'assembleDebug'... registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection) registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection) registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection) registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection) registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection) C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:9: error: cannot find symbol import androidx.annotation.NonNull;
^ symbol: class NonNull location: package androidx.annotation C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:10: error: cannot find symbol import androidx.annotation.Nullable;
^ symbol: class Nullable location: package androidx.annotation C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:253: error: cannot find symbol
public void onFailure(@NonNull Exception e) {
^ symbol: class NonNull C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:274: error: cannot find symbol
public Void apply(@NonNull Transaction transaction)
^ symbol: class NonNull C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:272: error: cannot find symbol
@Nullable
^ symbol: class Nullable C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:503: error: cannot find symbol
public void onFailure(@NonNull Exception e) {
^ symbol: class NonNull C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.9.0\Android\src\main\Java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.Java:558: error: cannot find symbol
public void onFailure(@NonNull Exception e) {
^ symbol: class NonNull 7 errors
FAILURE: Build failed with an exception.
* What went wrong: Execution failed for task ':cloud_firestore:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
* Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 26s Finished with error: Gradle task assembleDebug failed with exit code 1
プロジェクトにfirebaseを追加しようとしました
エラーからのエラーGradleパッケージバージョン修正パッケージの更新
ステップ1:フォルダを開くGradle Path C:\Users\{YourUserName}\.gradle\wrapper\dists
次に、バージョンをチックします。
古い場合は、gradle.orgから更新してください
最新バージョンをダウンロードZipファイルおよびファイルを受け入れて置換.
ANDRIOD STEDIOを開いて実行します
このパスを挿入C:\Program Files\Android\Android Studio\jre\bin
環境変数内[システム変数] may be it's work