遇到的问题
1.All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 25.3.0, 23.4.0. Examples includecom.android.support:animated-vector-drawable:25.3.0 andcom.android.support:design:23.4.0more... (Ctrl+F1)
解决办法:
在build.gradle 中替换以前的
旧：
compile 'com.android.support:design:25.3.0'
compile 'com.android.support:appcompat-v7:25.3.0'
新：
compile 'com.android.support:support-v4:28.0.0'
compile 'com.android.support:design:28.0.0'
compile 'com.android.support:appcompat-v7:28.0.0'
2.
error:Error converting bytecode to dex: （字节码转dex错误 造成原因：com.android.dex下抛出了Dex下标越界异常：不能新下标70021合并到一个 非jumbo的结构）
Cause: com.android.dex.DexIndexOverflowException: Cannot merge new index 70021 into a non-jumbo instruction!
Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException
解决办法:
在模块的build.gradle 文件中的加上：