RxMarkdown 是一个运用 RxJava API 在 TextView 或 EditText 中编辑和（实时）预览基本 markdown 语法的 Android 库

RxMarkdown is an Android library that helps to display simple markdown text in android.widget.EditText orandroid.widget.TextView .

It is backed by RxJava, implementing complicated APIs as handy reactive observables.

中文：README-zh-rCN.md

Demo apk : DOWNLOAD

QR Code : CLICK

Change Log : SEE

Support Grammar

RxMarkdown now provides 2 factories to parse markdown, TextFactory and EditFactory .

TextFactory : Supports most of the markdown grammars，but it will destroy the integrity of the content. So, it applies to render in TextView .

EditFactory : Supports some grammars，and it won't destroy the integrity of the content, the parsing speed is faster than TextFactory , So, it applies to real-time preview in EditText .

TextFactory

• [x] Header # / ## / ### / #### / ##### / #######
• [x] BlockQuote >
• [x] Nested BlockQuote > >
• [x] Emphasis Bold ** __
• [x] Emphasis Italic * _
• [x] Nested Bold && Italic
• [x] Ordered List 1.
• [x] Nested Ordered List
• [x] UnOrdered List * / + / -
• [x] Nested UnOrdered List
• [x] Image ![]()
• [x] Hyper Link []()
• [x] Inline Code
• [x] Code
• [x] Backslash \
• [x] Horizontal Rules *** / ***** / --- / -----------------
• [x] Strike Through ~~
• [x] Footnote [^]
• [x] Todo - [ ] / - [x]
• [ ] Table | Table | Table |

Other Grammar

• [x] Center Align []

EditFactory

• [x] Header # / ## / ### / #### / ##### / #######
• [x] BlockQuote >
• [x] Nested BlockQuote > >
• [x] Emphasis Bold ** __
• [x] Emphasis Italic * _
• [x] Nested Bold && Italic
• [x] Ordered List 1.
• [x] Nested Ordered List
• [x] UnOrdered List * / + / -
• [x] Nested UnOrdered List
• [ ] Image ![]()
• [ ] Hyper Link []()
• [x] Inline Code
• [x] Code
• [ ] Backslash \
• [x] Horizontal Rules *** / ***** / --- / -----------------
• [x] Strike Through ~~
• [ ] Footnote [^]
• [ ] Todo - [ ] / - [x]
• [ ] Table | Table | Table |

Other Grammar

• [x] Center Align []

HtmlFactory

//TODO

Quick Start Setup

compile 'com.yydcdut:rxmarkdown:0.0.7'

compile 'io.reactivex:rxandroid:1.2.0'
compile 'io.reactivex:rxjava:1.1.5'

Configuration

All options in Configuration builder are optional. Use only those you really want to customize.

RxMDConfiguration rxMDConfiguration = new RxMDConfiguration.Builder(context)
        .setDefaultImageSize(100, 100)//default image width & height
        .setBlockQuotesColor(Color.LTGRAY)//default color of block quotes
        .setHeader1RelativeSize(1.6f)//default relative size of header1
        .setHeader2RelativeSize(1.5f)//default relative size of header2
        .setHeader3RelativeSize(1.4f)//default relative size of header3
        .setHeader4RelativeSize(1.3f)//default relative size of header4
        .setHeader5RelativeSize(1.2f)//default relative size of header5
        .setHeader6RelativeSize(1.1f)//default relative size of header6
        .setHorizontalRulesColor(Color.LTGRAY)//default color of horizontal rules's background
        .setInlineCodeBgColor(Color.LTGRAY)//default color of inline code's background
        .setCodeBgColor(Color.LTGRAY)//default color of code's background
        .setTodoColor(Color.DKGRAY)//default color of todo
        .setTodoDoneColor(Color.DKGRAY)//default color of done
        .setUnOrderListColor(Color.BLACK)//default color of unorder list
        .setLinkColor(Color.RED)//default color of link text
        .setLinkUnderline(true)//default value of whether displays link underline
        .setRxMDImageLoader(new DefaultLoader(context))//default image loader
        .setDebug(true)//default value of debug
        .setOnLinkClickCallback(new OnLinkClickCallback() {//link click callback
            @Override
            public void onLinkClicked(View view, String link) {
            }
        })
        .build();

Usage

• EditText , live preview :

  RxMarkdown.live(rxMDEditText)
          .config(rxMDConfiguration)
          .factory(EditFactory.create())
          .intoObservable()
          .subscribe();

• cancel real-time preview :

  rxMDEditText.clear();

• TextView render :

  RxMarkdown.with(content, this)
          .config(rxMDConfiguration)
          .factory(TextFactory.create())
          .intoObservable()
          .subscribeOn(Schedulers.computation())
          .observeOn(AndroidSchedulers.mainThread())
          .subscribe(new Subscriber() {
              @Override
              public void onCompleted() {}
  
              @Override
              public void onError(Throwable e) {}
  
              @Override
              public void onNext(CharSequence charSequence) {
                  rxMDTextView.setText(charSequence, TextView.BufferType.SPANNABLE);
              }
          });

Note RxMDImageLoader

• Acceptable URIs examples

  "http://web.com/image.png" // from Web
  "file:///mnt/sdcard/image.png" // from SD card
  "assets://image.png" // from assets
  "drawable://" + R.drawable.img // from drawables (non-9patch images)

• Custom image loader

  public class MDLoader implements RxMDImageLoader {
      @Nullable
      @Override
      public byte[] loadSync(@NonNull String url) throws IOException {
          return new byte[0];
      }
  }

Image Size

The image of 320 pixels width and 320 pixels height will display on the screen :

![image](http://web.com/image.png/320$320)