分享一下我的三個程式碼自動生成工具類--助你解放雙手

XML 安卓開發 · 發表 2018-11-14 19:21:30

摘要：零、前言： 1.RecyclerView的Adapter自動生成器(含ViewHolder) 2.自定義屬性的自定義View程式碼生成器(含自定義屬性的初始化) 3.svg圖示轉換為Android可用xml生成器最近喜歡切割字串，這三個類是近期的作品，感覺挺好用的，在此分享一...

零、前言：

1.RecyclerView的Adapter自動生成器(含ViewHolder)

2.自定義屬性的自定義View程式碼生成器(含自定義屬性的初始化)

3.svg圖示轉換為Android可用xml生成器

最近喜歡切割字串，這三個類是近期的作品，感覺挺好用的，在此分享一下

三個工具都會貼在本文末尾，本文末尾，本文末尾

一、RecyclerView的Adapter自動生成器(含ViewHolder)

最近寫了幾個RecyclerView的Adapter,控制元件一多ViewHolder寫起來感覺挺不爽的

也感覺其中也只是佈局檔案裡的幾個id和View的型別有區別,寫個工具讀一下xml自動生成一下唄

既然ViewHolder自動生成了，順便吧Adapter也一起生成算了，反正初始也就那一大段

演示一下：

1.把工具類拷貝到test包裡

2.寫上你xml的路徑和生成的.java所在的包

3.點選執行，就可以生成了。如果有問題，歡迎指出

操作.png

Xml程式碼

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
android:id="@+id/id_cl_root"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="70dp"
tools:context=".MainActivity">
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginStart="20dp"
android:id="@+id/id_iv_icon"
android:src="@mipmap/ic_launcher"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<TextView
android:id="@+id/id_tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:maxLines="1"
android:text="name"
android:textColor="#000000"
android:textSize="18sp"
app:layout_constraintBottom_toTopOf="@id/id_iv_info"
app:layout_constraintStart_toEndOf="@id/id_iv_icon"
app:layout_constraintTop_toTopOf="@id/id_iv_icon"/>
<TextView
android:id="@+id/id_iv_info"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:ellipsize="end"
android:maxLines="2"
android:text="infoinfoinfoinfo"
android:textColor="@color/qq_line"
android:textSize="12sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@id/guide_v_95"
app:layout_constraintStart_toEndOf="@id/id_iv_icon"
app:layout_constraintTop_toBottomOf="@id/id_tv_name"/>
<android.support.constraint.Guideline
android:id="@+id/guide_v_95"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.95"
/>
</android.support.constraint.ConstraintLayout>

自動生成的Adapter

自動生成Adapter.png

點一下，就生成這麼多，一個一個敲怎麼也要五分鐘吧，這種枯燥的工作，還是留給計算機吧。

之後根據自己的業務需求，小修補一下就行了。

附加贈送：findViewById自動生成，控制檯裡，拷貝即用

雖然喜歡用butterknife,但感覺每次加依賴好麻煩，也就是想找個id,也沒必要引個庫,畢竟都佔空間的。

附贈findViewById.png

二、自定義屬性的自定義View程式碼生成器(含自定義屬性的初始化)

這可謂我的得意之作，本人比較喜歡自定義控制元件，但自定義屬相寫起來費心費力，也沒什麼含量

基本上也就那麼幾個屬性在變，一咬牙，寫個工具類吧，然後就有了下文：

演示一下使用：

1.把工具類拷貝到test包裡

2.寫上你xml的路徑和生成的.java所在的包，寫上你的專屬字首

3.點選執行，就可以生成了。如果有問題，歡迎指出

注意點 :自定義屬性必須有自己的專屬字首(任意字元都可以，統一即可)

操作.png

attrs.xml檔案：

<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="TolyProgressBar">
<attr name="z_pb_bg_color" format="color"/>
<attr name="z_pb_bg_height" format="dimension"/>
<attr name="z_pb_on_color" format="color"/>
<attr name="z_pb_on_height" format="dimension"/>
<attr name="z_pb_txt_color" format="color"/>
<attr name="z_pb_txt_size" format="dimension"/>
<attr name="z_pb_txt_offset" format="dimension"/>
<attr name="z_pb_txt_gone" format="boolean"/>
</declare-styleable>
</resources>

生成自定義控制元件.png

3.svg圖示轉換為Android可用xml生成器

和上面一樣，將所有svg放在一個資料夾裡,即可批處理

svg2xml.png

附錄

1：Xml2Adapter.java

/**
 * 作者：張風捷特烈
 * 時間：2018/10/31 0031:8:47
 * 郵箱：[email protected]
 * 說明：初始化RecyclerView的Adapter
 */
public class Xml2Adapter {
@Test
public void main() {
//你的佈局xml所在路徑
File file = new File("I:\\Java\\Android\\Unit\\B\\asyn\\src\\main\\res\\layout\\item_list_pic.xml");
//你的Adapter的java類放在哪個包裡
File out = new File("I:\\Java\\Android\\Unit\\B\\asyn\\src\\main\\java\\com\\toly1994\\app");
//你的Adapter的名字--不要加.java
String name = "MyRVAdapter";
initView(file, out, name);
}

@Test
public void findView() {
//你的佈局xml所在路徑
File file = new File("I:\\Java\\Android\\Unit\\B\\asyn\\src\\main\\res\\layout\\item_list_pic.xml");
findViewById(file);
}

private void findViewById(File in) {
String res = readFile(in);
HashMap<String, String> map = split(res);
StringBuilder sb = new StringBuilder();
map.forEach((id, view) -> {
sb.append("public ").append(view).append(" ").append(formatId2Field(id)).append(";").append("\r\n");
});
sb.append("\n\n");
map.forEach((id, view) -> {
sb.append(formatId2Field(id))
.append("= itemView.findViewById(R.id.")
.append(id).append(");").append("\r\n");

if ("Button".equals(view)) {
sb.append(formatId2Field(id) + ".setOnClickListener(v -> {\n" +
"});\n");
}
});
System.out.println(sb.toString());
}

/**
* 讀取檔案
*
* @param inxml檔案路徑
* @param out輸出的java路徑
* @param name
*/
private static void initView(File in, File out, String name) {
FileWriter fw = null;
try {
HashMap<String, String> map = split(readFile(in));
String result = contactAdapter(in, out, name, map);

//寫出到磁碟
File outFile = new File(out, name + ".java");
fw = new FileWriter(outFile);
fw.write(result);

} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (fw != null) {
fw.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

/**
* 讀取檔案
*
* @param in
* @return
*/
private static String readFile(File in) {
if (!in.exists() && in.isDirectory()) {
return "";
}

FileReader fr = null;
try {
fr = new FileReader(in);
//字元陣列迴圈讀取
char[] buf = new char[1024];
int len = 0;
StringBuilder sb = new StringBuilder();
while ((len = fr.read(buf)) != -1) {
sb.append(new String(buf, 0, len));
}

return sb.toString();
} catch (Exception e) {
e.printStackTrace();
return "";
} finally {
try {
if (fr != null) {
fr.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

/**
* 直接拼接出Adapter
*/
private static String contactAdapter(File file, File out, String name, HashMap<String, String> map) {
StringBuilder sb = new StringBuilder();
String path = out.getAbsolutePath();
path.split("java");

sb.append("package " + path.split("java\\\\")[1].replaceAll("\\\\", ".") + ";");
sb.append("\npublic class " + name + " extends RecyclerView.Adapter<MyRVAdapter.MyViewHolder> {\n");
sb.append("private Context mContext;\n");
sb.append("private List<String> mData;\n");
sb.append("public MyRVAdapter(Context context, List<String> data) {\n" +
"mContext = context;\n" +
"mData = data;\n" +
"}");

String layoutId = file.getName().substring(0, file.getName().indexOf(".x"));
sb.append("@NonNull\n" +
"@Override\n" +
"public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {\n" +
"View view = LayoutInflater.from(mContext).inflate(R.layout." + layoutId + ", parent, false);\n" +
"return new MyViewHolder(view);\n" +
"}\n");

sb.append("@Override \n" +
"public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {\n");

map.forEach((id, view) -> {
if ("Button".equals(view)) {
sb.append("holder." + formatId2Field(id) + ".setOnClickListener(v -> {\n" +
"});\n");
}

if ("TextView".equals(view)) {
sb.append("holder." + formatId2Field(id) + ".setText(\"\");\n");
}
if ("ImageView".equals(view)) {
sb.append("holder." + formatId2Field(id) + ".setImageBitmap(null);\n");
}
});

sb.append("}\n" +
"@Override\n" +
"public int getItemCount() {\n" +
"return mData.size();\n" +
"}");

sb.append(contactViewHolder(map));
return sb.toString();
}

/**
* 連線字串:ViewHolder
*/
private static String contactViewHolder(HashMap<String, String> map) {
StringBuilder sb = new StringBuilder();
sb.append("class MyViewHolder extends RecyclerView.ViewHolder {\r\n");
map.forEach((id, view) -> {
sb.append("public ").append(view).append(" ").append(formatId2Field(id)).append(";").append("\r\n");
});

sb.append("public MyViewHolder(View itemView) {\n" +
"super(itemView);");

map.forEach((id, view) -> {
sb.append(formatId2Field(id))
.append("= itemView.findViewById(R.id.")
.append(id).append(");").append("\r\n");
});
sb.append("}\n" +
"}\n}");

return sb.toString();
}

private static String formatId2Field(String id) {
if (id.contains("_")) {
String[] partStrArray = id.split("_");
id = "";
for (String part : partStrArray) {
String partStr = upAChar(part);
id += partStr;
}
}
return "m" + id;
}

/**
* 將字串僅首字母大寫
*
* @param str 待處理字串
* @return 將字串僅首字母大寫
*/
public static String upAChar(String str) {
String a = str.substring(0, 1);
String tail = str.substring(1);
return a.toUpperCase() + tail;
}

private static HashMap<String, String> split(String res) {
String[] split = res.split("<");
HashMap<String, String> viewMap = new HashMap<>();
for (String s : split) {
if (s.contains("android:id=\"@+id") && !s.contains("Guideline")) {
String id = s.split("@")[1];
id = id.substring(id.indexOf("/") + 1, id.indexOf("\""));
String view = s.split("\r\n")[0];
String[] viewNameArr = view.split("\\.");
if (viewNameArr.length > 0) {
view = viewNameArr[viewNameArr.length - 1];
}
viewMap.put(id, view);
}
}
return viewMap;
}
}

2.Attrs2View.java

/**
 * 作者：張風捷特烈
 * 時間：2018/10/31 0031:8:47
 * 郵箱：[email protected]
 * 說明：安卓自定義屬性，程式碼生成器
 */
public class Attrs2View {
@Test
public void main() {
//你的attr.xml所在路徑
File file = new File("I:\\Java\\Android\\Unit\\B\\test\\src\\main\\res\\values\\attrs.xml");
//你的Adapter的java類放在哪個包裡
File out = new File("I:\\Java\\Android\\Unit\\B\\asyn\\src\\main\\java\\com\\toly1994\\app");
String preFix = "z_";
//你的字首
initAttr(preFix, file, out);
}

public static void initAttr(String preFix, File file, File out) {
HashMap<String, String> format = format(preFix, file);
String className = format.get("className");
String result = format.get("result");

StringBuilder sb = initTop(out, className, result);
sb.append("TypedArray a = context.obtainStyledAttributes(attrs, R.styleable." + className + ");\r\n");
format.forEach((s, s2) -> {
String styleableName = className + "_" + preFix + s;
if (s.contains("_")) {
String[] partStrArray = s.split("_");
s = "";
for (String part : partStrArray) {
String partStr = upAChar(part);
s += partStr;
}
}
if (s2.equals("dimension")) {
// mPbBgHeight = (int) a.getDimension(R.styleable.TolyProgressBar_z_pb_bg_height, mPbBgHeight);
sb.append("m" + s + " = (int) a.getDimension(R.styleable." + styleableName + ", m" + s + ");\r\n");
}
if (s2.equals("color")) {
// mPbTxtColor = a.getColor(R.styleable.TolyProgressBar_z_pb_txt_color, mPbTxtColor);
sb.append("m" + s + " =a.getColor(R.styleable." + styleableName + ", m" + s + ");\r\n");
}
if (s2.equals("boolean")) {
// mPbTxtColor = a.getColor(R.styleable.TolyProgressBar_z_pb_txt_color, mPbTxtColor);
sb.append("m" + s + " =a.getBoolean(R.styleable." + styleableName + ", m" + s + ");\r\n");
}
if (s2.equals("string")) {
// mPbTxtColor = a.getColor(R.styleable.TolyProgressBar_z_pb_txt_color, mPbTxtColor);
sb.append("m" + s + " =a.getString(R.styleable." + styleableName + ");\r\n");
}
});
sb.append("a.recycle();\r\n");

sb.append("init();\n" +
"}");
sb.append("private void init() {\n" +
"\n" +
"}\n}");
System.out.println(sb.toString());

FileWriter fw = null;
try {
//寫出到磁碟
File outFile = new File(out, className + ".java");
fw = new FileWriter(outFile);
fw.write(sb.toString());

} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (fw != null) {
fw.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

/*
*
* @param out
* @param name
*/
private static StringBuilder initTop(File out, String name, String field) {
StringBuilder sb = new StringBuilder();
String path = out.getAbsolutePath();
path.split("java");
sb.append("package " + path.split("java\\\\")[1].replaceAll("\\\\", ".") + ";\n");
sb.append("public class " + name + " extends View {\n");
sb.append(field);
sb.append("public " + name + "(Context context) {\n" +
"this(context, null);\n" +
"}\n" +
"public " + name + "(Context context, AttributeSet attrs) {\n" +
"this(context, attrs, 0);\n" +
"}\n" +
"public " + name + "(Context context, AttributeSet attrs, int defStyleAttr) {\n" +
"super(context, attrs, defStyleAttr);\n");

return sb;
}

/**
* 讀取檔案+解析
*
* @param preFix 字首
* @param file檔案路徑
*/
public static HashMap<String, String> format(String preFix, File file) {
HashMap<String, String> container = new HashMap<>();
if (!file.exists() && file.isDirectory()) {
return null;
}
FileReader fr = null;
try {
fr = new FileReader(file);
//字元陣列迴圈讀取
char[] buf = new char[1024];
int len = 0;
StringBuilder sb = new StringBuilder();
while ((len = fr.read(buf)) != -1) {
sb.append(new String(buf, 0, len));
}
String className = sb.toString().split("<declare-styleable name=\"")[1];
className = className.substring(0, className.indexOf("\">"));
container.put("className", className);
String[] split = sb.toString().split("<");
String part1 = "private";
String type = "";//型別
String name = "";
String result = "";
String def = "";//預設值

StringBuilder sb2 = new StringBuilder();
for (String s : split) {
if (s.contains(preFix)) {
result = s.split(preFix)[1];
name = result.substring(0, result.indexOf("\""));
type = result.split("format=\"")[1];
type = type.substring(0, type.indexOf("\""));
container.put(name, type);
if (type.contains("color") || type.contains("dimension") || type.contains("integer")) {
type = "int";
def = "0";
}
if (result.contains("fraction")) {
type = "float";
def = "0.f";
}
if (result.contains("string")) {
type = "String";
def = "\"toly\"";
}
if (result.contains("boolean")) {
type = "boolean";
def = "false";

}
if (name.contains("_")) {
String[] partStrArray = name.split("_");
name = "";
for (String part : partStrArray) {
String partStr = upAChar(part);
name += partStr;
}
sb2.append(part1 + " " + type + " m" + name + "= " + def + ";\r\n");
}
container.put("result", sb2.toString());
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (fr != null) {
fr.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return container;
}

/**
* 將字串僅首字母大寫
*
* @param str 待處理字串
* @return 將字串僅首字母大寫
*/
public static String upAChar(String str) {
String a = str.substring(0, 1);
String tail = str.substring(1);
return a.toUpperCase() + tail;
}
}

3.Svg2Xml.java

/**
 * 作者：張風捷特烈
 * 時間：2018/10/31 0031:8:47
 * 郵箱：[email protected]
 * 說明：svg圖示轉換為Android可用xml生成器 
 */
public class Svg2Xml {

@Test
public void svgDir() {
String dirPath = "E:\\Material\\MyUI\\#svg\\基礎";
svg2xmlFromDir(dirPath);
}

@Test
public void singleSvg() {
File file = new File("E:\\Material\\MyUI\\#svg\\字母\\icon_a.svg");
svg2xml(file);
svg2xmlFromDir("E:\\Material\\MyUI\\#svg\\字母");
}

/**
* 將一個資料夾裡的所有svg轉換為xml
*
* @param filePath
*/
public static void svg2xmlFromDir(String filePath) {

File file = new File(filePath);
if (file.isDirectory()) {
File[] files = file.listFiles();
for (File f : files) {
if (f.getName().endsWith(".svg")) {
System.out.println(f);
svg2xml(f);
}
}
} else {
svg2xml(file);
}
}

/**
* 將.svg檔案轉換為安卓可用的.xml
*
* @param file 檔案路徑
*/
public static void svg2xml(File file) {
if (!file.exists() && file.isDirectory()) {
return;
}

FileWriter fw = null;
FileReader fr = null;
ArrayList<String> paths = new ArrayList<>();
try {
fr = new FileReader(file);
//字元陣列迴圈讀取
char[] buf = new char[1024];
int len = 0;
StringBuilder sb = new StringBuilder();
while ((len = fr.read(buf)) != -1) {
sb.append(new String(buf, 0, len));
}
//收集所有path
collectPaths(sb.toString(), paths);
//拼接字串
StringBuilder outSb = contactStr(paths);
//寫出到磁碟
File outFile = new File(file.getParentFile(), file.getName().substring(0, file.getName().lastIndexOf(".")) + ".xml");
fw = new FileWriter(outFile);
fw.write(outSb.toString());
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (fw != null) {
fw.close();
}
if (fr != null) {
fr.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

/**
* 拼接字串
*
* @param paths
* @return
*/
private static StringBuilder contactStr(ArrayList<String> paths) {
StringBuilder outSb = new StringBuilder();
outSb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" +
"<vector xmlns:android=\"http://schemas.android.com/apk/res/android\"\n" +
"android:width=\"48dp\"\n" +
"android:height=\"48dp\"\n" +
"android:viewportWidth=\"1024\"\n" +
"android:viewportHeight=\"1024\">\n");
for (String path : paths) {
outSb.append("<path\n" +
"android:fillColor=\"#FF7F47\"\nandroid:pathData=");
outSb.append(path);
outSb.append("/>");
}
outSb.append("</vector>");
return outSb;
}

/**
* 收集所有path
*
* @param result
* @param paths
*/
private static void collectPaths(String result, ArrayList<String> paths) {
String[] split = result.split("<path");
for (String s : split) {
int fPos = s.indexOf("f");
int dPos = s.indexOf("d=");
if (fPos != -1 && fPos < dPos) {
String[] pathTemp = s.split("d=");
String path = pathTemp[1].substring(0, pathTemp[1].indexOf("/"));
paths.add(path);
continue;
}
if (s.contains("path")) {
int endIndex;
if (!s.contains("fill")) {
endIndex = s.indexOf("p");
} else {
endIndex = Math.min(s.indexOf("f"), s.indexOf("p"));
}
String path = s.substring(s.indexOf("\""), endIndex);
System.out.println(path);
paths.add(path);
}
}
}
}

分享一下我的三個程式碼自動生成工具類--助你解放雙手

零、前言：

一、RecyclerView的Adapter自動生成器(含ViewHolder)

演示一下：

Xml程式碼

自動生成的Adapter

附加贈送：findViewById自動生成，控制檯裡，拷貝即用

二、自定義屬性的自定義View程式碼生成器(含自定義屬性的初始化)

演示一下使用：

attrs.xml檔案：

3.svg圖示轉換為Android可用xml生成器

附錄

1：Xml2Adapter.java

2.Attrs2View.java

3.Svg2Xml.java

您可能也會喜歡…