问题如下
Using hardware rendering with device Android SDK built for x86 64. If you get graphics artifacts, consider enabling software rendering with
"--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 64 in debug mode...
Initializing gradle... 1.5s
Resolving dependencies... 17.3s
F:\dartSpace\flutter\Demo\salesman_field\android\app\src\main\java\com\example\salesman_field\MainActivity.java:14: ����: �����android.support.v4.
content������
import android.support.v4.content.FileProvider;
^
F:\dartSpace\flutter\Demo\salesman_field\android\app\src\main\java\com\example\salesman_field\MainActivity.java:60: ����: �����android.support.v4.
content������
Uri uri7 = android.support.v4.content.FileProvider.getUriForFile(this,"com.example.salesman_field.android7.fileprovider", apkFile);
^
2 ������
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app: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 46s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 46.8s
*******************************************************************************************
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See https://goo.gl/CP92wY for more information on the problem and how to fix it.
*******************************************************************************************
Gradle task assembleDebug failed with exit code 1
PS F:\dartSpace\flutter\Demo\salesman_field> flutter run
Using hardware rendering with device Android SDK built for x86 64. If you get graphics artifacts, consider enabling software rendering with
"--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 64 in debug mode...
Initializing gradle... 2.8s
Resolving dependencies... 33.7s
F:\dartSpace\flutter\Demo\salesman_field\android\app\src\main\java\com\example\salesman_field\MainActivity.java:61: ����: �����android.support.v4.
content������
Uri uri7 = android.support.v4.content.FileProvider.getUriForFile(this,"com.example.salesman_field.android7.fileprovider", apkFile);
^
1 ������
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app: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
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 27.4s
*******************************************************************************************
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See https://goo.gl/CP92wY for more information on the problem and how to fix it.
*******************************************************************************************
Gradle task assembleDebug failed with exit code 1
为兼容24之上版本代码做了些改变报错，查阅资料
android.support.v4.content.FileProvider->androidx.core.content.FileProvider
问题解决
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