最近升级到Android Studio 3.1，同时我正在尝试Android P预览。
编译时出现以下错误：
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）。找到的版本是28.0.0-alpha1,26.1.0。示例包括com.android.support:animated-vector-drawable:28.0.0-alpha1和com.android.support:support-media-compat:26.1.0 less ...（Ctrl + F1） 有些库或工具和库的组合不兼容，或者可能导致错误。一个这样的不兼容性是使用不是最新版本的Android支持库版本（或者特别是低于targetSdkVersion的版本）进行编译。
但我无法在任何地方看到26.1.0的任何实例。我在Gradle中的所有内容都是：
implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
implementation 'com.android.support:design:28.0.0-alpha1'
我已尝试清除缓存，重建应用等。但错误仍然存在。
答案 0 :(得分：40)
您需要通过将冲突的库添加到依赖项块
来覆盖冲突的库dependencies {
implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
implementation 'com.android.support:customtabs:28.0.0-alpha1'
implementation 'com.android.support:support-vector-drawable:28.0.0-alpha1'
implementation 'com.android.support:support-media-compat:28.0.0-alpha1'
implementation 'com.android.support:support-v4:28.0.0-alpha1'
答案 1 :(得分：11)
您需要通过将冲突的库添加到依赖项块来覆盖冲突的库。例如，您可以在错误日志中找到以下内容：
发现版本28.0.0-alpha1,26.1.0。例子包括 com.android.support:animated-vector-drawable:28.0.0-alpha1和 com.android.support:support-media-compat:26.1.0 less ...
您可以通过添加以下类似的库来删除错误：
dependencies {
implementation 'com.android.support:animated-vector-drawable:28.0.0-alpha1`
implementation 'com.android.support:support-media-compat:28.0.0-alpha1`
}
答案 2 :(得分：10)
以上警告并非特定于与媒体兼容的依赖项。他们只是添加了示例来解释该问题。通过为我添加v4 lib解决了该问题。
implementation 'com.android.support:support-v4:28.0.0'
除
implementation 'com.android.support:appcompat-v7:28.0.0'
无需包含
implementation 'com.android.support:animated-vector-drawable:28.0.0'
implementation 'com.android.support:support-media-compat:28.0.0'
答案 3 :(得分：4)
将应用程序连接到Firebase时出现此错误。
无需添加任何内容。
只需将鼠标光标放在错误行（在下面）上，然后按Alt + Enter
(implementation 'com.android.support:appcompat-v7:28.0.0')
在列表中输入第一个选项。（无检查）
之后看起来像这样
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:28.0.0'
答案 4 :(得分：2)
Some dependency — perhaps playLicensing — has a transitive dependency on at least support-media-compat, for version 26.1.0.
To work around this:
Identify each Support Library artifact that shows up in "External Libraries" that is older than 28.0.0-alpha1. Based on the error, those older ones should all be 26.1.0, and it will be at least support-media-compat.
For each of those, add your own implementation line to your dependencies, requesting that artifact, but for 28.0.0-alpha1. This will cause Gradle to use the newer artifact, which happens to be what you want.
Hope that whatever is depending on those older artifacts will survive with the newer artifacts.
So, at minimum, you are adding:
implementation 'com.android.support:support-media-compat:28.0.0-alpha1'
答案 5 :(得分：1)
添加build.grad（Module.app）的依赖项
dependencies {
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:animated-vector-drawable:28.0.0'
implementation 'com.android.support:support-media-compat:28.0.0'
}
答案 6 :(得分：1)
//覆盖冲突的库
实现'com.android.support:support-v4:28.0.0-alpha1'
实现'com.android.support:animated-vector-drawable:28.0.0-alpha1'
实现'com.android.support:exifinterface:28.0.0-alpha1'
答案 7 :(得分：1)
就我而言，添加support-v4帮助我摆脱了警告。
dependencies {
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:animated-vector-drawable:28.0.0'
implementation 'com.android.support:support-media-compat:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
// other dependencies
}
答案 8 :(得分：0)
您在项目中使用Firebase吗？ 使用Firebase Core或Firebase应用程序索引似乎是造成此问题的原因。 我遇到了同样的问题，但是对Firebase软件包进行注释会使错误消失
// implementation 'com.google.firebase:firebase-core:16.0.8'
// implementation 'com.google.firebase:firebase-ads:17.2.0'
// implementation 'com.google.firebase:firebase-appindexing:17.1.0'
答案 9 :(得分：0)
简单易用的解决方案是添加手动冲突版本的android-support。
Mixing version can lead to runtime crashes
只需关注并解决您的问题即可。
转到您的gradle脚本->在依赖项部分中构建gradle（Module：app）并实现有冲突的版本，以方便转到链接。
确保在实施过程中没有空间。
import sys
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtCore import Qt, QRect
from PyQt5.QtGui import QScreen
from PyQt5.QtWidgets import QApplication
class KpeWindow(QtWidgets.QLabel):
def __init__(self, parent=None):
QtWidgets.QLabel.__init__(self,parent)
self.selection = QtWidgets.QRubberBand(QtWidgets.QRubberBand.Rectangle, self)
def keyPressEvent(self, event):
if event.key() == QtCore.Qt.Key_Return:
rect = self.getCoverage()
print(rect)
self.parent().keyPressEvent(event)
def mousePressEvent(self, event):
if event.button() == QtCore.Qt.LeftButton:
position = QtCore.QPoint(event.pos())
if self.selection.isVisible():
# visible selection
print("UPPER: ")
print(self.upper_left)
print("LOWER: ")
print(self.lower_right)
if (self.upper_left - position).manhattanLength() < 20:
# close to upper left corner, drag it
self.mode = "drag_upper_left"
elif (self.lower_right - position).manhattanLength() < 20:
# close to lower right corner, drag it
self.mode = "drag_lower_right"
else:
# clicked somewhere else, hide selection
self.selection.hide()
else:
# no visible selection, start new selection
self.upper_left = position
self.lower_right = position
self.mode = "drag_lower_right"
self.selection.show()
def getCoverage(self):
localCoords = self.contentsRect()
print("localCoords: ", localCoords)
TL = self.mapToGlobal(localCoords.topLeft())
BR = localCoords.bottomRight()
# TL+BR to get width & height
widgetCoords = QRect(TL, TL+BR)
print("widgetCoords: ", widgetCoords)
return widgetCoords
class MainWindow(QtWidgets.QWidget):
def __init__(self):
super(MainWindow, self).__init__()
QtWidgets.QMainWindow.__init__(self)
layout = QtWidgets.QVBoxLayout(self)
label = KpeWindow(self)
pixmap = QScreen.grabWindow(app.primaryScreen(), app.desktop().winId())
label.setPixmap(pixmap)
layout.addWidget(label)
#new
label.setFocusPolicy(Qt.StrongFocus)
self.setFocusProxy(label)
label.setFocus(True)
self.setLayout(layout)
geometry = app.desktop().availableGeometry()
self.setFixedSize(geometry.width(), geometry.height())
self.show()
if __name__ == '__main__':
app = QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit(app.exec_())
您可以点击链接。
答案 10 :(得分：0)
我认为您的gradle文件具有以下依赖性。将此添加到您的应用程序级别build.gradle。
implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
implementation 'com.android.support:mediarouter-v7:28.0.0-alpha1'
implementation 'com.android.support:support-vector-drawable:28.0.0-alpha1'
implementation 'com.android.support:support-v4:28.0.0-alpha1'
答案 11 :(得分：0)
就我而言，我通过将其添加到错误行下方来解决了此问题。
实现'com.android.support:support-media-compat:28.0.0' 实施'com.android.support:support-v4:28.0.0'