[英]Android Studio - MinSdkVersion on Java Library
I have a module in my Android Studio project, which is a Java Library, in there I wrote a function like this: 我的Android Studio项目中有一个模块,它是一个Java库,在其中编写了如下函数:
private boolean titleIsNotEmpty(Event event){
return event.getTitle().trim().isEmpty();
}
But on isEmpty()
I get the following message: 但是在isEmpty()
我收到以下消息:
Call requires API level 9 (current min is 1) Java.lang.String#isEmpty 调用要求API级别9(当前最小值为1)Java.lang.String#isEmpty
Also when I try to use Function
or Optional
classes I get the same error: 另外,当我尝试使用Function
或Optional
类时,也会出现相同的错误:
Call requires API level 24 (current min is 1) 调用需要API级别24(当前最小值为1)
How can I define that on a Java Library?, my gradle build.module is: 如何在Java库上定义它,我的gradle build.module是:
apply plugin: 'java'
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
}
sourceCompatibility = "1.8"
targetCompatibility = "1.8"
Thanks in advance 提前致谢
maybe you can try this add to your java module 也许您可以尝试将此添加到您的Java模块
@SuppressLint("NewApi")
@TargetApi(Build.VERSION_CODES.KITKAT)
Your current min SDK is 1... 您当前的最小SDK为1 ...
You must look in your build.gradle
after this line: 您必须在此行之后查看build.gradle
:
minSdkVersion **
You must cange the ** to your required SDK. 您必须将**链接到所需的SDK。 For example 24 例如24
minSdkVersion 24
I've seen this behavior if you're using android studio and you only have a JAR module in the project. 如果您使用的是android studio,并且项目中只有 JAR模块,那么我已经看到了这种现象。
Just ignore it. 只是忽略它。
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