报错信息
Could not find the built application bundle at build/ios/iphoneos/Runner.app.
Error launching application on xxx的 iPhone.

错误的原因是在xcode中修改了bundle Name字段的名字 默认是Runner，将bundle Name修改为Runner即可

修改plist文件

<key>CFBundleDisplayName</key>

<string>$(PRODUCT_NAME)</string>

<key>CFBundleExecutable</key>

<string>$(EXECUTABLE_NAME)</string>

<key>CFBundleIdentifier</key>

<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>

<key>CFBundleInfoDictionaryVersion</key>

<string>6.0</string>

<key>CFBundleName</key>

<string>VIPidea课堂</string>