Multiple Android interface reuse a layout file

1.layout_common.xml

reusing layout files

<?XML version= "1.0" encoding= "Utf-8"?><!--Reusing layout files -<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"android:orientation= "Horizontal" >    <TextViewAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_weight= "1" />    <ButtonAndroid:id= "@+id/common_button1"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Button 1" />    <TextViewAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_weight= "1" />    <ButtonAndroid:id= "@+id/common_button2"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "button 2" />    <TextViewAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_weight= "1" />    <ButtonAndroid:id= "@+id/common_button3"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "button 3" />    <TextViewAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_weight= "1" /></LinearLayout>

2.layout_main.xml

Main layout file, where the reuse layout file is referenced

<?XML version= "1.0" encoding= "Utf-8"?><!--Main layout file -<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical" >    <RelativelayoutAndroid:layout_width= "Match_parent"Android:layout_height= "0DP"Android:layout_margin= "16DP"Android:layout_weight= "1" >    </Relativelayout>    <!--referencing a reusable layout file in a layout file -    <includeLayout= "@layout/layout_common" /></LinearLayout>

3.commonview.java

Re-use the layout file instantiation. Individually encapsulated, interface callback. Avoid repeating the layout file, avoid repeating the control, avoid repeating the setting of the Listener method

 PackageCom.example.mytestapp;Importandroid.app.Activity;ImportAndroid.content.Context;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.Button;/*** Reusing layout file instantiation*/ Public classCommonviewImplementsOnclicklistener {//Interface     Public InterfaceOncommonviewclick { Public voidOnbutton1click (View v);  Public voidOnbutton2click (View v);  Public voidOnbutton3click (View v); }     Public voidSetlistener (Oncommonviewclick listener) { This. Listener =Listener;    } Context Mcontext;    Oncommonviewclick Listener;  PublicCommonview (Context context) { This. Mcontext =context; }     PublicButton button1, Button2, Button3;  PublicCommonview init () {button1=( Button) ((Activity) mcontext). Findviewbyid (R.id.common_button1); Button2=( Button) ((Activity) mcontext). Findviewbyid (R.id.common_button2); Button3=( Button) ((Activity) mcontext). Findviewbyid (R.id.common_button3); Button1.setonclicklistener ( This); Button2.setonclicklistener ( This); Button3.setonclicklistener ( This); return  This; } @Override Public voidOnClick (View v) {if(Listener = =NULL)            return; Switch(V.getid ()) { CaseR.id.common_button1:listener.onbutton1click (v);  Break;  CaseR.id.common_button2:listener.onbutton2click (v);  Break;  CaseR.id.common_button3:listener.onbutton3click (v);  Break; default:             Break; }    }}

4.mainactivity.java

Instantiation of the main interface

 PackageCom.example.mytestapp;Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.view.View;ImportAndroid.widget.Toast;/** Question: * 1. How do I change the text or color of a control with code? */ Public classMainactivityextendsActivityImplementsCommonview.oncommonviewclick {intClicktimes = 0; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.layout_main); //instantiate the layout file here and implement the Listener interface method//the instantiation of a reusable block of code can be done directly with one line of code        NewCommonview ( This). Init (). Setlistener ( This); } @Override Public voidOnbutton1click (View v) {clicktimes++; //here's how to implement the corresponding Click eventToast.maketext ( This, "You clicked button" + Clicktimes + "Times", Toast.length_short). Show (); } @Override Public voidOnbutton2click (View v) {//here's how to implement the corresponding Click event} @Override Public voidOnbutton3click (View v) {//here's how to implement the corresponding Click event    }}

Multiple Android interface reuse a layout file