Android网络拦截器，支持Debug模式，查看请求与响应的具体信息并修改

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上班的某天，导师突然对我说要做一个网络拦截器

网络拦截器，顾名思义就是用于拦截网络的，可以获得 http请求的具体信息，如请求头，URL，请求体，响应体，请求方法等，

一开始万脸懵逼，根本就没接触过这么高深的东西，于是各种百度，一无所获，看来是没人做过类似的插件。

于是师傅提供了一个思路，OkHttp有一个Interceptor 用于拦截网络，修改请求等，了解之后就开始做了

前期准备：全局悬浮窗，跟随应用一起消亡；一个界面，用于展示网络请求信息；

项目中涉及的知识比较多，比如Service，windowmanager，recyclerview，okhttpinterceptor，数据的存储等下面将一个个细说

先看图，黄色的小点就是悬浮窗，全局存在，因此用到了bindService

要实现全局的悬浮窗，自然用到了Service，后台一直存在，将生成的界面展示再Window上，

这里用到了WindowManager 和Service，通过layoutinfalte加载自定义的界面，然后通过windowmanager.addView（）把自定义布局加载到window中，至于点击事件什么的，很简单

    private void initSwitchWindow() {        switchParams = new WindowManager.LayoutParams(                WindowManager.LayoutParams.WRAP_CONTENT,                WindowManager.LayoutParams.WRAP_CONTENT,                WindowManager.LayoutParams.TYPE_PHONE,                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,                PixelFormat.TRANSLUCENT);        switchParams.gravity = Gravity.START | Gravity.TOP;        switcherWindow = LayoutInflater.from(this)                .inflate(R.layout.interceptor_switch_btn, null);        mWindowManager.addView(switcherWindow, switchParams);        pgbNetWorking = (ProgressBar) switcherWindow.findViewById(R.id.pgb_on_working);        tvProgress = (TextView) switcherWindow.findViewById(R.id.tv_progress);        switcherWindow.setOnTouchListener(new SwitchOnTouchListener(switcherWindow, mWindowManager));        switcherWindow.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (networkWindow == null) {                    initNetWorkWindow();                    showLog();                } else if (!isLogShow) {                    showLog();                } else {                    closeLog();                }            }        });        switcherWindow.setOnLongClickListener(new View.OnLongClickListener() {            @Override            public boolean onLongClick(View v) {                if (checkFunctionWindow == null) {                    initCheckedDetailWindow();                    showFunctionWindow();                } else if (!isCheckFunctionShow) {                    showFunctionWindow();                }                Log.i("tag", "-----onlongclick");                return true;            }        });    }

悬浮窗初始化好了之后就是点击后展示的界面，这里用到了RecyclerView，点击后出现子View

这里的recyclerview将会通过getItemViewType来设置，在bindviewHolder的时候判断传入的viewholder属于是什么类型，从而展示相应信息

/** * d * 适配器用于将网络拦截器中的信息展示到RecyclerView上 * Created by HongChen on 2017/11/8. */public class LogAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {    private List<HttpVO> realHttpVOS = new ArrayList<>();    private List<HttpVO> showHttpVOS = new ArrayList<>();    private OnItemClickListener onItemClickListener;    public interface OnItemClickListener {        boolean onLongClick(View v, int position);    }    public void setOnItemLongClickListener(OnItemClickListener onItemClickListener) {        this.onItemClickListener = onItemClickListener;    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        /*        点击父布局出现详细信息         */        if (viewType == HttpVO.TYPE_TITLE) {            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.parentview_layout, parent, false);            return new ParentViewHolder(view);        } else {            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.childview_layout, parent, false);            return new ChildViewHolder(view);        }    }    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        final HttpVO httpVO = showHttpVOS.get(position);        if (holder instanceof ParentViewHolder) {            String title = "Url:" + httpVO.content;            ((ParentViewHolder) holder).title.setText(title);        } else if (holder instanceof ChildViewHolder) {            ((ChildViewHolder) holder).content.setText(httpVO.content);            ((ChildViewHolder) holder).content.setTag(httpVO.position);        }    }    @Override    public int getItemCount() {        return showHttpVOS.size();    }    @Override    public int getItemViewType(int position) {        return showHttpVOS.get(position).type;    }    public void addData(List<HttpVO> data) {        realHttpVOS.addAll(data);        showHttpVOS.add(data.get(0));        notifyItemInserted(showHttpVOS.size() - 1);    }    /**     * 清空所有数据     */    public void clearData() {        realHttpVOS.clear();        showHttpVOS.clear();        notifyDataSetChanged();    }    public List<HttpVO> getDataList() {        return realHttpVOS;    }    class ParentViewHolder extends RecyclerView.ViewHolder {        TextView title;        ParentViewHolder(View itemView) {            super(itemView);            title = (TextView) itemView.findViewById(R.id.tv_title);            itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    final int position = getAdapterPosition();                    final HttpVO httpVO = showHttpVOS.get(position);                    final boolean isExpand = httpVO.isExpand();                    httpVO.setExpand(!isExpand);                    final int nextPosition = position + 1;                    if (isExpand) {                        showHttpVOS.remove(nextPosition);                        notifyItemRemoved(nextPosition);                    } else {                        showHttpVOS.add(nextPosition, realHttpVOS.get(httpVO.position + 1));                        notifyItemInserted(nextPosition);                    }                }            });        }    }    class ChildViewHolder extends RecyclerView.ViewHolder {        TextView content;        RelativeLayout rlVerifyRequestData;        EditText etUpdate;        Button btnVerify;        ChildViewHolder(final View itemView) {            super(itemView);            content = (TextView) itemView.findViewById(R.id.tv_content);            rlVerifyRequestData = (RelativeLayout) itemView.findViewById(R.id.rl_verify_requestdata);            etUpdate = (EditText) itemView.findViewById(R.id.et_verifydata);            btnVerify = (Button) itemView.findViewById(R.id.btn_updata);            content.setOnLongClickListener(new View.OnLongClickListener() {                @Override                public boolean onLongClick(View v) {                    Log.i("tag", "----------onLongClick");                    return onItemClickListener != null && onItemClickListener.onLongClick(v, (Integer) v.getTag());                }            });        }    }}

先写这点，要上班了

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