在Android Studio中使用-Xlint重新编译

问题描述

当我在Android Studio中构建Android项目时，我收到消息:

When I build my Android project in Android Studio, I get message:

Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

和

Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

我想按照消息的提示进行操作，但是如何处理?我如何配置我的Android Studio以重新编译我的项目，并按上述消息提示-Xlint? (我正在使用Android Studio 3.0.1)

I would like to do what the message suggested, but how? How can I configure my Android studio to re-compile my project wihth -Xlint as the above message suggested? (I am using Android Studio 3.0.1)

推荐答案

该消息建议您使用args -Xlint重新编译以获取更多警告详细信息，并将这些代码添加到build.gradle:

The message suggest you recompile with args -Xlint to get more warning details, add these code to build.gradle:

allprojects {
    tasks.withType(JavaCompile) {
        options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
    }
}

然后，您可以通过详细消息来修正警告.
例如，您可以使用新方法替换不推荐使用的方法(由于不推荐使用旧方法，因此始终有一个新方法).

Then you can fix warnings by detailed messages.
For example, you can replace deprecated method with new method(there always been a new method since old method has been deprecated) .

但是，有时由于某些原因我们不想更改代码，我们只是想摆脱编译警告，您可以在已弃用的方法前面添加@SuppressWarnings("deprecation").

However, sometimes we don't want change our code for some reasons, we just want get rid of compile warning, you can add @SuppressWarnings("deprecation") in front of the deprecated method.

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