Java原始碼閱讀繪圖規範手冊--[捷特版]

摘要： 最近打算去深讀原始碼，感覺不畫圖去分析原始碼根本理不清，也說不清 UML是分析類和類的關係，具體的類內部貌似沒有圖形機制，沒有條件就創造條件唄 藉此機會本人自定義一套圖形繪圖表示規範，並恬不知恥地稱為捷型圖 目的為了明確各種元素的圖形表示，來表述與分...

為了避免每張圖都加個圖例，這裡成文統一描述一下

一、常用表示

1.訪問限制類型

無形狀限定，修飾中(左上角)見色如見人

2.常見修飾符

三角形，放在左上角

3.類相關

4.方法與變數

5.關聯線

表述無歧義情況下箭頭,數字可略

6.uml線

二.其他不常用:

1.第一組

//待續...

三、幾個小例子說明一下

1.類例子

ActivityThread是一個public final的普通類
ApplicationThread 是一個private的內部類 , 並處於 ActivityThread中
複製程式碼

2.方法與變數例子

3.sendBroadcast的第一層關係

在Activity中呼叫sendBroadcast，會呼叫ContextWrapper的sendBroadcast方法
sendBroadcast會使用ContextWrapper的成員變數mBase的sendBroadcast方法
而mBase實際上來源於ContextImpl，而ContextImpl是一個Context類，
ContextImpl的sendBroadcast方法呼叫ActivityManagerNative.getDefault().broadcastIntent傳送廣播

這樣就將工作焦點指向ActivityManagerNative，可以進行第二層的繪製，也就是分析
ActivityManagerNative，上面的四行話解釋和下面的圖你更喜歡哪個?
成年人的世界沒有單選題，當然選擇都要，圖文結合，更能形象說明
複製程式碼

4.捷型圖 示例

下圖是基於下面類繪製的圖形，有什麼好的意見或建議歡迎留言，

目前使用processon線上繪圖工具 ，以後有時間開發個小軟體來繪製感覺挺不錯，

再加個一鍵生成什麼的就更棒了...

/*
 * This file is auto-generated.DO NOT MODIFY.
 * Original file: J:\\Java\\Android\\LeverUp\\TolyService\\app\\src\\main\\aidl\\com\\toly1994\\tolyservice\\IMusicPlayerService.aidl
 */
package com.toly1994.tolyservice;
// Declare any non-default types here with import statements

public interface IMusicPlayerService extends android.os.IInterface {
/**
* Local-side IPC implementation stub class.
*/
public static abstract class Stub extends android.os.Binder implements com.toly1994.tolyservice.IMusicPlayerService {
private static final java.lang.String DESCRIPTOR = "com.toly1994.tolyservice.IMusicPlayerService";

/**
* Construct the stub at attach it to the interface.
*/
public Stub() {
this.attachInterface(this, DESCRIPTOR);
}

/**
* Cast an IBinder object into an com.toly1994.tolyservice.IMusicPlayerService interface,
* generating a proxy if needed.
*/
public static com.toly1994.tolyservice.IMusicPlayerService asInterface(android.os.IBinder obj) {
if ((obj == null)) {
return null;
}
android.os.IInterface iin = obj.queryLocalInterface(DESCRIPTOR);
if (((iin != null) && (iin instanceof com.toly1994.tolyservice.IMusicPlayerService))) {
return ((com.toly1994.tolyservice.IMusicPlayerService) iin);
}
return new com.toly1994.tolyservice.IMusicPlayerService.Stub.Proxy(obj);
}

@Override
public android.os.IBinder asBinder() {
return this;
}

@Override
public boolean onTransact(int code, android.os.Parcel data, android.os.Parcel reply, int flags) throws android.os.RemoteException {
java.lang.String descriptor = DESCRIPTOR;
switch (code) {
case INTERFACE_TRANSACTION: {
reply.writeString(descriptor);
return true;
}
case TRANSACTION_stop: {
data.enforceInterface(descriptor);
this.stop();
reply.writeNoException();
return true;
}
case TRANSACTION_pause: {
data.enforceInterface(descriptor);
this.pause();
reply.writeNoException();
return true;
}
case TRANSACTION_start: {
data.enforceInterface(descriptor);
this.start();
reply.writeNoException();
return true;
}
case TRANSACTION_prev: {
data.enforceInterface(descriptor);
this.prev();
reply.writeNoException();
return true;
}
case TRANSACTION_next: {
data.enforceInterface(descriptor);
this.next();
reply.writeNoException();
return true;
}
case TRANSACTION_release: {
data.enforceInterface(descriptor);
this.release();
reply.writeNoException();
return true;
}
case TRANSACTION_isPlaying: {
data.enforceInterface(descriptor);
boolean _result = this.isPlaying();
reply.writeNoException();
reply.writeInt(((_result) ? (1) : (0)));
return true;
}
case TRANSACTION_seek: {
data.enforceInterface(descriptor);
int _arg0;
_arg0 = data.readInt();
this.seek(_arg0);
reply.writeNoException();
return true;
}
case TRANSACTION_create: {
data.enforceInterface(descriptor);
java.util.List<java.lang.String> _arg0;
_arg0 = data.createStringArrayList();
this.create(_arg0);
reply.writeNoException();
return true;
}
default: {
return super.onTransact(code, data, reply, flags);
}
}
}

private static class Proxy implements com.toly1994.tolyservice.IMusicPlayerService {
private android.os.IBinder mRemote;

Proxy(android.os.IBinder remote) {
mRemote = remote;
}

@Override
public android.os.IBinder asBinder() {
return mRemote;
}

public java.lang.String getInterfaceDescriptor() {
return DESCRIPTOR;
}

/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
@Override
public void stop() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_stop, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}

@Override
public void pause() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_pause, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}

@Override
public void start() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_start, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}

@Override
public void prev() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_prev, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}

@Override
public void next() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_next, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}

@Override
public void release() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_release, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}

@Override
public boolean isPlaying() throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
boolean _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_isPlaying, _data, _reply, 0);
_reply.readException();
_result = (0 != _reply.readInt());
} finally {
_reply.recycle();
_data.recycle();
}
return _result;
}

@Override
public void seek(int pre_100) throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeInt(pre_100);
mRemote.transact(Stub.TRANSACTION_seek, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}
//加in

@Override
public void create(java.util.List<java.lang.String> filePaths) throws android.os.RemoteException {
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeStringList(filePaths);
mRemote.transact(Stub.TRANSACTION_create, _data, _reply, 0);
_reply.readException();
} finally {
_reply.recycle();
_data.recycle();
}
}
}

static final int TRANSACTION_stop = (android.os.IBinder.FIRST_CALL_TRANSACTION + 0);
static final int TRANSACTION_pause = (android.os.IBinder.FIRST_CALL_TRANSACTION + 1);
static final int TRANSACTION_start = (android.os.IBinder.FIRST_CALL_TRANSACTION + 2);
static final int TRANSACTION_prev = (android.os.IBinder.FIRST_CALL_TRANSACTION + 3);
static final int TRANSACTION_next = (android.os.IBinder.FIRST_CALL_TRANSACTION + 4);
static final int TRANSACTION_release = (android.os.IBinder.FIRST_CALL_TRANSACTION + 5);
static final int TRANSACTION_isPlaying = (android.os.IBinder.FIRST_CALL_TRANSACTION + 6);
static final int TRANSACTION_seek = (android.os.IBinder.FIRST_CALL_TRANSACTION + 7);
static final int TRANSACTION_create = (android.os.IBinder.FIRST_CALL_TRANSACTION + 8);
}

/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
public void stop() throws android.os.RemoteException;

public void pause() throws android.os.RemoteException;

public void start() throws android.os.RemoteException;

public void prev() throws android.os.RemoteException;

public void next() throws android.os.RemoteException;

public void release() throws android.os.RemoteException;

public boolean isPlaying() throws android.os.RemoteException;

public void seek(int pre_100) throws android.os.RemoteException;
//加in

public void create(java.util.List<java.lang.String> filePaths) throws android.os.RemoteException;
}
複製程式碼