Ignoring unknown package filter 'extra-android-m2repository'Warning: The package filter removed all packages. There is nothing to install.Ignoring unknown package
阅读背景：
anddroid 新建工程时遇到：Failed to Resolved: com.android.support:appcompat-v7:15.+
来源：互联网
Ignoring unknown package filter 'extra-android-m2repository'Warning: The package filter removed all packages. There is nothing to install.Ignoring unknown package
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