摘要： 1、建立Android应用application name: CallJavaMethodpackage name: com.example.cjmmain Activity: MainActivitymain Activity layout: activity_main2、Java实现打开layout/activity_main.xml布局文件，添加按钮控件，ID为“display_button_activity_main”<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android&quo 阅读全文