工欲善其事必先利其器，使用插件能够极大的提高开发效率。AndroidStudio基于IntelliJ平台，因此，开发AndroidStudio插件其本质只是开发IntelliJ平台的插件。
下文以模板创建BaseActivity为例 MVPArmsPlugin & BaseLibraryPlugin ：
1、下载IntelliJ IDEA
IntelliJ IDEA集成了插件开发环境，下载后可以直接拿来开发插件。IntelliJ IDEA下载地址如下：
https://www.jetbrains.com/idea/
2、创建项目
3、创建Action
3.1、创建BaseActivityAction
package com.github.duoluo9.BaseLibraryPlugin;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.project.Project;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Date;
public class BaseActivityAction extends AnAction {
private Project project;
private Module module;
//包名
private String packageName = "";
private String pageName;
private boolean isKotlin;
@Override
public void actionPerformed(AnActionEvent e) {
project = e.getData(PlatformDataKeys.PROJECT);
module = (Module) e.getDataContext().getData("module");
packageName = getPackageName();
init();
refreshProject(e);
}
/**
* 刷新项目
*
* @param e
*/
private void refreshProject(AnActionEvent e) {
e.getProject().getBaseDir().refresh(false, true);
}
/**
* 初始化Dialog
*/
private void init() {
BaseActivityDialog myDialog = new BaseActivityDialog((pageName, isKotlin) -> {
BaseActivityAction.this.pageName = pageName;
BaseActivityAction.this.isKotlin = isKotlin;
createClassFile();
});
myDialog.setVisible(true);
}
/**
* 生成mvp框架代码
*/
private void createClassFile() {
String appPath = getAppPath();
String fileName = isKotlin ? "BaseActivity.kt.ftl" : "BaseActivity.java.ftl";
String content = ReadTemplateFile(fileName);
content = dealTemplateContent(content);
if (isKotlin)
writeToFile(content, appPath + "activity", pageName + "Activity.kt");
else
writeToFile(content, appPath + "activity", pageName + "Activity.java");
String layoutFileName = "simple.xml.ftl";
String layoutContent = ReadTemplateFile(layoutFileName);
writeToFile(layoutContent, getAppResPath(), "activity_" + pageName.toLowerCase() + ".xml");
}
/**
* 获取包名文件路径
*
* @return
*/
private String getAppPath() {
String packagePath = packageName.replace(".", "/");
String appPath = project.getBasePath() + "/" + module.getName().substring(module.getName().indexOf(".") + 1) + "/src/main/java/" + packagePath + "/";
return appPath;
}
/**
* 获取包名文件路径
*
* @return
*/
private String getAppResPath() {
String appPath = project.getBasePath() + "/" + module.getName().substring(module.getName().indexOf(".") + 1) + "/src/main/res/layout/";
return appPath;
}
/**
* 替换模板中字符
*
* @param content
* @return
*/
private String dealTemplateContent(String content) {
content = content.replace("${pageName}", pageName);
if (content.contains("${packageName}")) {
content = content.replace("${packageName}", packageName);
}
if (content.contains("${activityLayoutName}")) {
content = content.replace("${activityLayoutName}", "activity_" + pageName.toLowerCase());
}
return content;
}
/**
* 获取当前时间
*
* @return
*/
public String getDate() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd");
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 读取模板文件中的字符内容
*
* @param fileName 模板文件名
* @return
*/
private String ReadTemplateFile(String fileName) {
InputStream in = this.getClass().getResourceAsStream("/com/github/duoluo9/BaseLibraryPlugin/Template/" + fileName);
String content = "";
try {
if (in != null)
content = new String(readStream(in));
} catch (IOException e) {
e.printStackTrace();
}
return content;
}
private byte[] readStream(InputStream inputStream) throws IOException {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
try {
while ((len = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, len);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
outputStream.close();
inputStream.close();
}
return outputStream.toByteArray();
}
/**
* 生成
*
* @param content 类中的内容
* @param classPath 类文件路径
* @param className 类文件名称
*/
private void writeToFile(String content, String classPath, String className) {
try {
File floder = new File(classPath);
if (!floder.exists()) {
floder.mkdirs();
}
File file = new File(classPath + "/" + className);
if (!file.exists()) {
file.createNewFile();
}
FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
bw.write(content);
bw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 从AndroidManifest.xml文件中获取当前app的包名
*
* @return
*/
private String getPackageName() {
String package_name = "";
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(project.getBasePath() + "/" + module.getName().substring(module.getName().indexOf(".") + 1) + "/src/main/AndroidManifest.xml");
NodeList nodeList = doc.getElementsByTagName("manifest");
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
Element element = (Element) node;
package_name = element.getAttribute("package");
}
} catch (Exception e) {
e.printStackTrace();
}
return package_name;
}
}
3.2、创建BaseLibraryGroup
添加菜单组（group）必须有一个DefaultActionGroup
package com.github.duoluo9.BaseLibraryPlugin;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.DefaultActionGroup;
import org.jetbrains.annotations.NotNull;
public class BaseLibraryGroup extends DefaultActionGroup {
@Override
public void update(@NotNull AnActionEvent e) {
super.update(e);
}
}
3.3、创建BaseActivityDialog
可以使用拖曳的方式创建视图
package com.github.duoluo9.BaseLibraryPlugin;
import javax.swing.*;
import java.awt.event.*;
public class BaseActivityDialog extends JDialog {
private JPanel contentPane;
private JButton buttonOK;
private JButton buttonCancel;
private JTextField textField1;
private JRadioButton radioButton1;
private DialogCallBack mCallBack;
public BaseActivityDialog(DialogCallBack callBack) {
this.mCallBack = callBack;
setTitle("BaseActivityDialog");
setContentPane(contentPane);
setModal(true);
getRootPane().setDefaultButton(buttonOK);
setSize(480, 150);
setLocationRelativeTo(null);
buttonOK.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
onOK();
}
});
buttonCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
onCancel();
}
});
setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
onCancel();
}
});
contentPane.registerKeyboardAction(new ActionListener() {
public void actionPerformed(ActionEvent e) {
onCancel();
}
}, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
}
private void onOK() {
if (null != mCallBack) {
mCallBack.ok(textField1.getText().trim(), radioButton1.isSelected());
}
dispose();
}
private void onCancel() {
dispose();
}
public interface DialogCallBack {
void ok(String pageName, boolean isKotlin);
}
}
4、修改plugin.xml
<idea-plugin>
<id>com.github.duoluo9.BaseLibraryPlugin.plugin.id</id>
<name>BaseLibraryPlugin</name>
<version>1.0</version>
<vendor email="[email protected]" url="https://github.com/duoluo9">duoluo9</vendor>
<description><![CDATA[BaseLibraryPlugin<br>]]></description>
<change-notes><![CDATA[
1.0<br>
]]>
</change-notes>
<!-- please see https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html for description -->
<idea-version since-build="173.0"/>
<!-- please see https://plugins.jetbrains.com/docs/intellij/plugin-compatibility.html
on how to target different products -->
<depends>com.intellij.modules.platform</depends>
<extensions defaultExtensionNs="com.intellij">
<!-- Add your extensions here -->
</extensions>
<actions>
<group id="com.github.duoluo9.BaseLibrary" popup="true" searchable="true"
class="com.github.duoluo9.BaseLibraryPlugin.BaseLibraryGroup" text="BaseLibrary"
description="BaseLibrary中的类生成工具">
<action id="com.github.duoluo9.BaseActivityAction"
class="com.github.duoluo9.BaseLibraryPlugin.BaseActivityAction"
text="BaseActivity"
description="BaseLibrary中BaseActivity的类生成工具">
</action>
<action id="com.github.duoluo9.BaseMvpActivityAction"
class="com.github.duoluo9.BaseLibraryPlugin.BaseMvpActivityAction"
text="BaseMvpActivity"
description="BaseLibrary中BaseMvpActivity的类生成工具">
</action>
<action id="com.github.duoluo9.BaseTitleBarActivityAction"
class="com.github.duoluo9.BaseLibraryPlugin.BaseTitleBarActivityAction"
text="BaseTitleBarActivity"
description="BaseLibrary中BaseTitleBarActivity的类生成工具">
</action>
<add-to-group group-id="NewGroup" anchor="first"/>
</group>
</actions>
</idea-plugin>
5、构建本地jar
6、安装插件BaseLibraryPlugin.jar
7、使用插件快速生成BaseActivity代码
8、常见问题
8.1、插件无法在AndroidStudio中使用，可以安装但是没有创建的菜单（因为Idea插件默认JDK11而AndroidStudio默认JDK1.8）
8.2、无法使用Idea的run按钮调试插件
