Android Studio 实现无缝调用系统 API

AS无缝调用系统api

Android studio使用自己的framework.jar,调用系统api

1. 源码路径下找到对应的编译中间文件

   out\target\common\obj\JAVA_LIBRARIES\framework_intermediates\classes.jar

2. 拷贝jar文件添加到AS的lib中,add as library

3. 修改app下build.gradle中framework.jar为compileOnly模式,优先级提高

   dependencies {
       compileOnly files('libs/framework.jar')
       implementation fileTree(include: ['*.jar'], dir: 'libs')
       ...
   }
   

4. 修改AS项目app目录下的app.iml文件,将文件结尾 <orderEntry> 中对应的framework.jar项提取到sdk项之上,不要忘记save一下

   …

   <orderEntry type="library" name="__local_aars__:E.\Workspace\AndroidProj\Test\MTvFactoryTest\app\libs\framework.jar:unspecified@jar" level="project" />
   
   <orderEntry type="jdk" jdkName="Android API 23 Platform" jdkType="Android SDK" />
   ...
   

   gradle实现方式，在app下build.gradle中结尾添加如下代码

   preBuild {
   doLast {
       def imlFile = file(project.name + ".iml")
       println('Change ' + project.name + '.iml order')
       try {
           def parsedXml = (new XmlParser()).parse(imlFile)
           def jdkNode = parsedXml.component[1].orderEntry.find { it.'@type' == 'jdk' }
           parsedXml.component[1].remove(jdkNode)
           def sdkString = "Android API " + android.compileSdkVersion.substring("android-".length()) + " Platform"
           new groovy.util.Node(parsedXml.component[1], 'orderEntry', ['type': 'jdk', 'jdkName': sdkString, 'jdkType': 'Android SDK'])
           groovy.xml.XmlUtil.serialize(parsedXml, new FileOutputStream(imlFile))
       } catch (FileNotFoundException e) {
           // nop, iml not found
       }
   }
   }
   

5. 项目根目录下的build.gradle中,添加如下代码:

   allprojects {
       repositories {
           ...
       }
   
       gradle.projectsEvaluated {
           tasks.withType(JavaCompile) {
               options.compilerArgs.add('-Xbootclasspath/p:app\\libs\\framework.jar')
           }
       }
   }
   

6. 执行clern,rebuild操作后,即可发现系统隐藏api不再报错,即可无缝使用