Question

我收到此警告：

所有com.android.support库必须使用完全相同的版本规范（混合版本可能导致运行时崩溃）。找到了版本27.1.1、27.1.0。例子包括 com.android.support:animated-vector-drawable:27.1.1和 com.android.support:exifinterface:27.1。

我理解这一点，但是即使所有com.android.support版本都相同，为什么还会向我显示此警告？（27.1.1）

这是我文件的内容：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.app.sin.retrolist"
        minSdkVersion 18
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    } }

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:recyclerview-v7:27.1.1'
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.android.support:design:27.1.1'
    implementation 'com.jakewharton:butterknife:8.8.1'
    implementation 'com.android.volley:volley:1.1.1'
    implementation 'com.squareup.picasso:picasso:2.71828' }

Answer 1

要查看为什么在依赖项树中包含特定的依赖项，您可以（假设您的主模块名为(env) Cam@cambook:~/Sites/juke% python manage.py makemigrations playlists Traceback (most recent call last): File "manage.py", line 15, in <module> execute_from_command_line(sys.argv) File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line utility.execute() File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 347, in execute django.setup() File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/__init__.py", line 24, in setup apps.populate(settings.INSTALLED_APPS) File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/apps/registry.py", line 112, in populate app_config.import_models() File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models self.models_module = import_module(models_module_name) File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 994, in _gcd_import File "<frozen importlib._bootstrap>", line 971, in _find_and_load File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 665, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 678, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/Users/Cam/Sites/juke/playlists/models.py", line 60, in <module> class Track(models.Model): File "/Users/Cam/Sites/juke/playlists/models.py", line 63, in Track number = PositiveSmallIntegerField() NameError: name 'PositiveSmallIntegerField' is not defined并且您在macOS上）运行简单：

app

在控制台输出中，您将看到完整的依赖树以及如何解析库版本。

处理依赖项冲突的正确方法是明确定义解决策略：

./gradlew app:dependencies

此文件必须放在configurations.all { resolutionStrategy { force 'com.android.support:exifinterface:27.1.1' } }模块中build.gradle文件的根目录中。

使用以下方法覆盖冲突的依赖项：

app

不太正确，因为您的模块不直接依赖于此库，因此，例如，如果以后版本的依赖项不再依赖于此库，它仍将包含在已解决的依赖项列表，即使您不需要它也是如此。

更好的是，您可以定义：

dependencies {
    ...
    implementation 'com.android.support:exifinterface:27.1.1'
}

在主ext { supportLibVersion = "27.1.1" }文件中，然后在需要的地方使用它：

build.gradle

实施版本的Build.gradle问题

1 个答案: