Android Development Knowledge Point Learning notes!

1, Variable storage location: "Res"--"values"-"string.xml"

2, Layout interface: "res"/"Layout"/"Activity_main.xml",

<framelayout xmlns:android= "http://schemas.android.com/apk/res/android"    xmlns:tools= "http// Schemas.android.com/tools "    android:id=" @+id/container "    android:layout_width=" Match_parent "    Android : layout_height= "match_parent"    tools:context= "com.example.demo_1aaa. Mainactivity "    tools:ignore=" Mergerootframe ">                <linearlayout         android:layout_width=" fill_parent "         android:layout_height=" wrap_content "         android:orientation=" vertical "         >                         <edittext             android:layout_width= "fill_parent"             android:layout_height= "wrap_content"             />                 </ linearlayout>//text box

    <linearlayout         android:layout_width= "fill_parent"         android:layout_height= "wrap_content"         android:o rientation= "Horizontal"         android:gravity= "right"         >     <!--android:gravity= "OK" means that the button component is aligned to the left- -         <button             android:layout_height= "wrap_content"             android:layout_width= "Wrap_content             " android:text= "OK"             />         <button             android:layout_height= "wrap_content"             android:layout_ Width= "Wrap_content"             android:text= "Cancel"             />         </LinearLayout> <span style= "font-family: Arial, Helvetica, Sans-serif; >//button </span>                </FrameLayout>

Android Development Knowledge Point Learning notes!