Replace and save new Content

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v4.content.res.ResourcesCompat;

import android.support.v4.content.res.TypedArrayUtils;

import android.support.v4.text.TextUtilsCompat;

import android.text.TextUtils;

import android.text.method.LinkMovementMethod;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.ViewGroup;

import android.widget.TextView;

import com.yydcdut.markdown.callback.OnTodoClickCallback;

import com.yydcdut.markdown.syntax.text.TextFactory;

import com.yydcdut.rxmarkdown.RxMDConfiguration;

import com.yydcdut.rxmarkdown.RxMDTextView;

import com.yydcdut.rxmarkdown.RxMarkdown;

import butterknife.BindView;

import butterknife.ButterKnife;

import it.niedermann.owncloud.notes.R;

import it.niedermann.owncloud.notes.util.MarkDownUtil;

import it.niedermann.owncloud.notes.util.ICallback;

import rx.Subscriber;

import rx.android.schedulers.AndroidSchedulers;

import rx.schedulers.Schedulers;

        content = content.replaceAll("(?<![(])(https?://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|])(?![^\\[]*\\])", "[$1]($1)");

        RxMarkdown.with(content, getActivity())

                .config(MarkDownUtil.getMarkDownConfiguration(getActivity().getApplicationContext()))

                .config(new RxMDConfiguration.Builder(getActivity().getApplicationContext())

                        .setHeader2RelativeSize(1.35f)

                        .setHeader3RelativeSize(1.25f)

                        .setHeader4RelativeSize(1.15f)

                        .setHeader5RelativeSize(1.1f)

                        .setHeader6RelativeSize(1.05f)

                        .setHorizontalRulesHeight(2)

                        .setOnTodoClickCallback(new OnTodoClickCallback() {

                            @Override

                            public CharSequence onTodoClicked(View view, String line, int lineNumber) {

                                String[] lines = TextUtils.split(note.getContent(), "\\r?\\n");

                                if(lines.length >= lineNumber) {

                                    lines[lineNumber] = line + lines[lineNumber].charAt(lines[lineNumber].length() - 1);

                                }

                                noteContent.setText(TextUtils.join("\n", lines), TextView.BufferType.SPANNABLE);

                                saveNote(null);

                                return line;

                            }

                        })

                        .setLinkFontColor(ResourcesCompat.getColor(getActivity().getApplicationContext().getResources(), R.color.primary, null))

                        .build())

                .factory(TextFactory.create())

                .intoObservable()

                .subscribeOn(Schedulers.computation())

    @Override

    protected String getContent() {

        return note.getContent();

        return noteContent.getText().toString();

    }

}