SystemUiHelper

        1.在项目根目录下的build.gradle文件中，
         allprojects {
            repositories {
                maven {
                          url 'https://s01.oss.sonatype.org/content/repositories/releases/'
                      }
            }
         }
        2.在entry模块的build.gradle文件中，
         dependencies {
            implementation('com.gitee.chinasoft_ohos:SystemUiHelper:1.0.0')
           }

new SystemUiHelper(getAbility(), new SystemUiHelper.OnVisibilityChangeListener() {
            @Override
            public void onVisibilityChange(boolean visible) {
               ... 
            }
        });
// This will set up window flags.
mSystemUiHelper.show();

               Copyright 2015 Zhang Hai

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