android gradle 3.0 androidManifest.xml合并

   android {
       ...
       sourceSets {
           main {
               manifest.srcFile {
                   /* 多个AndroidManifest拼接，
                   修改AndroidManifest运行时及时更新，
                   clean后不会自动创建，需手动sync，可能是因为分两步的问题*/
                   def _manifests = ['src/comm/AndroidManifest.xml', 'src/pay/AndroidManifest.xml']
                   def main = file('src/main/AndroidManifest.xml')
                   def targetFile = new File(getBuildDir(), "AndroidManifest.xml")
                   if (!targetFile.getParentFile().exists()) {
                       targetFile.getParentFile().mkdirs();
                   }
                   def main_text = main.getText("utf-8")
                   def appIndex = main_text.lastIndexOf("</application>")
                   def targetContent = main_text.substring(0, appIndex)
                   for (item in _manifests) {
                       def c = file(item).getText("utf-8");
                       def appTag = "<application>"
                       def ct = c.substring(c.indexOf(appTag) + appTag.length(), c.lastIndexOf("</application>"))
                       targetContent += ct;
                   }
                   targetContent += main_text.substring(appIndex)
                   targetFile.write(targetContent, "utf-8")
                   return targetFile.getAbsolutePath()
               }
               jniLibs.srcDirs = ["libs", 'src/comm/libs', 'src/libs',
                                  'src/main/jniLibs', 'src/main/libs',
                                  'src/view/libs', 'src/pay/libs',
               ]
               res.srcDirs = ['src/main/res', 'src/comm/res', "src/view/res", "src/pay/res"]
               java.srcDirs = ['src/main/java', 'src/comm/java', 'src/view/java', "src/pay/java"]
           }
       }
       ...
   }