引言

项目需要用到编辑器，采用RichEditor，如下效果

实现

1. 引入库2

implementation 'jp.wasabeef:richeditor-android:2.0.0'

2.  XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_marginBottom="@dimen/dp_60"
    android:theme="@style/customTheme"
    >
    <HorizontalScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/app_color_9b">

        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <ImageButton
                android:id="@+id/action_undo"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/undo" />

            <ImageButton
                android:id="@+id/action_redo"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/redo" />

            <ImageButton
                android:id="@+id/action_bold"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/bold" />

            <ImageButton
                android:id="@+id/action_heading1"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/h1" />

            <ImageButton
                android:id="@+id/action_heading2"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/h2" />

            <ImageButton
                android:id="@+id/action_heading3"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/h3" />

            <ImageButton
                android:id="@+id/action_heading4"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/h4" />

            <ImageButton
                android:id="@+id/action_heading5"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/h5" />

            <ImageButton
                android:id="@+id/action_heading6"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/h6" />

            <ImageButton
                android:id="@+id/action_insert_image"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@null"
                android:contentDescription="@null"
                android:src="@mipmap/insert_image" />


        </LinearLayout>

    </HorizontalScrollView>
    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <jp.wasabeef.richeditor.RichEditor
            android:id="@+id/editor"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </androidx.core.widget.NestedScrollView>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="详情预览"
        android:visibility="gone"
        android:textSize="12sp" />

    <TextView
        android:id="@+id/preview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:visibility="gone"/>


</LinearLayout>

3. fragement片段初始化

 private void initEditor(){
        mPreview = (TextView) mActivity.findViewById(R.id.preview);
        mEditor = (RichEditor) mActivity.findViewById(R.id.editor);
        //初始化编辑高度
        mEditor.setEditorHeight(200);
        //初始化字体大小
        mEditor.setEditorFontSize(16);
        //初始化字体颜色
        mEditor.setEditorFontColor(Color.BLACK);
        //初始化内边距
        mEditor.setPadding(10, 10, 10, 10);
        //设置默认显示语句
        mEditor.setPlaceholder("请输入...");
        //设置编辑器是否可用
        mEditor.setInputEnabled(true);

        //mPreview = (TextView) mActivity.findViewById(R.id.preview);

        mEditor.setOnTextChangeListener(new RichEditor.OnTextChangeListener() {
            @Override
            public void onTextChange(String text) {
                mPreview.setText(text);
            }
        });

        mActivity.findViewById(R.id.action_undo).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.undo();
            }
        });

        mActivity.findViewById(R.id.action_redo).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.redo();
            }
        });

        mActivity.findViewById(R.id.action_heading1).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.setHeading(1);
            }
        });

        mActivity.findViewById(R.id.action_heading2).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.setHeading(2);
            }
        });

        mActivity.findViewById(R.id.action_heading3).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.setHeading(3);
            }
        });

        mActivity.findViewById(R.id.action_heading4).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.setHeading(4);
            }
        });

        mActivity.findViewById(R.id.action_heading5).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.setHeading(5);
            }
        });

        mActivity.findViewById(R.id.action_heading6).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mEditor.setHeading(6);
            }
        });