移动端强大的富文本编辑器richeditor-android

川长思鸟来 2022-03-09 02:16 473阅读 0赞

> 代码地址如下：  
> [http://www.demodashi.com/demo/14883.html][http_www.demodashi.com_demo_14883.html]

\#\#\#\#一、运行效果图  
![dlIOMnA7Mj6G2WrUZKY.gif][]

\#\#\#\#二、代码具体实现

##### 1.引入richeditor-android #####

richeditor-android需要的jar：
    implementation 'jp.wasabeef:richeditor-android:1.2.2'
    
    这是一个Dialog框架，demo中不想自己去写，所以就使用了第三方
    implementation 'com.afollestad.material-dialogs:core:0.9.6.0'

##### 2.引入控件RichEditor #####

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

##### 3.使用到的权限 #####

如果拍照需要相机权限，选择图片需要SD卡权限，插入网络图片需要网络权限

<uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />

##### 4.初始化RichEditor #####

mEditor = (RichEditor) findViewById(R.id.editor);
    
    //初始化编辑高度
    mEditor.setEditorHeight(200);
    //初始化字体大小
    mEditor.setEditorFontSize(22);
    //初始化字体颜色
    mEditor.setEditorFontColor(Color.BLACK);
    //mEditor.setEditorBackgroundColor(Color.BLUE);
    
    //初始化内边距
    mEditor.setPadding(10, 10, 10, 10);
    //设置编辑框背景，可以是网络图片
    //mEditor.setBackground("https://raw.githubusercontent.com/wasabeef/art/master/chip.jpg");
    // mEditor.setBackgroundColor(Color.BLUE);
    mEditor.setBackgroundResource(R.drawable.bg);
    //设置默认显示语句
    mEditor.setPlaceholder("Insert text here...");
    //设置编辑器是否可用
    mEditor.setInputEnabled(true);

##### 5.实时监听Editor输入内容 #####

mPreview = (TextView) findViewById(R.id.preview);
            mEditor.setOnTextChangeListener(new RichEditor.OnTextChangeListener() { 
                @Override
                public void onTextChange(String text) { 
                    mPreview.setText(text);
                }
            });

##### 6.功能方法 #####

/** * 撤销当前标签状态下所有内容 */
            findViewById(R.id.action_undo).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.undo();
                }
            });
            /** * 恢复撤销的内容 */
            findViewById(R.id.action_redo).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.redo();
                }
            });
            /** * 加粗 */
            findViewById(R.id.action_bold).setOnClickListener(new View.OnClickListener() { 
    
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setBold();
                }
            });
            /** * 斜体 */
            findViewById(R.id.action_italic).setOnClickListener(new View.OnClickListener() { 
    
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setItalic();
                }
            });
            /** * 下角表 */
            findViewById(R.id.action_subscript).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    if (mEditor.getHtml() == null) { 
                        return;
                    }
                    mEditor.setSubscript();
                }
            });
            /** * 上角标 */
            findViewById(R.id.action_superscript).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    if (mEditor.getHtml() == null) { 
                        return;
                    }
                    mEditor.setSuperscript();
                }
            });
    
            /** * 删除线 */
            findViewById(R.id.action_strikethrough).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setStrikeThrough();
                }
            });
            /** *下划线 */
            findViewById(R.id.action_underline).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setUnderline();
                }
            });
            /** * 设置标题（1到6） */
            findViewById(R.id.action_heading1).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setHeading(1);
                }
            });
    
            findViewById(R.id.action_heading2).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setHeading(2);
                }
            });
    
            findViewById(R.id.action_heading3).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setHeading(3);
                }
            });
    
            findViewById(R.id.action_heading4).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setHeading(4);
                }
            });
    
            findViewById(R.id.action_heading5).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setHeading(5);
                }
            });
    
            findViewById(R.id.action_heading6).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setHeading(6);
                }
            });
            /** * 设置字体颜色 */
            findViewById(R.id.action_txt_color).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    new MaterialDialog.Builder(MainActivity.this)
                            .title("选择字体颜色")
                            .items(R.array.color_items)
                            .itemsCallbackSingleChoice(-1, new MaterialDialog.ListCallbackSingleChoice() { 
                                @Override
                                public boolean onSelection(MaterialDialog dialog, View itemView, int which, CharSequence text) { 
    
                                    dialog.dismiss();
                                    switch (which) { 
                                        case 0://红
                                            mEditor.setTextColor(Color.RED);
                                            break;
                                        case 1://黄
                                            mEditor.setTextColor(Color.YELLOW);
                                            break;
                                        case 2://蓝
                                            mEditor.setTextColor(Color.GREEN);
                                            break;
                                        case 3://绿
                                            mEditor.setTextColor(Color.BLUE);
                                            break;
                                        case 4://黑
                                            mEditor.setTextColor(Color.BLACK);
                                            break;
                                    }
                                    return false;
                                }
                            }).show();
                }
            });
    
            findViewById(R.id.action_bg_color).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    new MaterialDialog.Builder(MainActivity.this)
                            .title("选择字体背景颜色")
                            .items(R.array.text_back_color_items)
                            .itemsCallbackSingleChoice(-1, new MaterialDialog.ListCallbackSingleChoice() { 
                                @Override
                                public boolean onSelection(MaterialDialog dialog, View itemView, int which, CharSequence text) { 
    
                                    dialog.dismiss();
                                    switch (which) { 
                                        case 0://红
                                            mEditor.setTextBackgroundColor(Color.RED);
                                            break;
                                        case 1://黄
                                            mEditor.setTextBackgroundColor(Color.YELLOW);
                                            break;
                                        case 2://蓝
                                            mEditor.setTextBackgroundColor(Color.GREEN);
                                            break;
                                        case 3://绿
                                            mEditor.setTextBackgroundColor(Color.BLUE);
                                            break;
                                        case 4://黑
                                            mEditor.setTextBackgroundColor(Color.BLACK);
                                            break;
                                        case 5://透明
                                            mEditor.setTextBackgroundColor(R.color.transparent);
                                            break;
                                    }
                                    return false;
                                }
                            }).show();
    
                }
            });
            /** * 向右缩进 */
            findViewById(R.id.action_indent).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setIndent();
                }
            });
            /** * 向左缩进 */
            findViewById(R.id.action_outdent).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setOutdent();
                }
            });
            /** *文章左对齐 */
            findViewById(R.id.action_align_left).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.setAlignLeft();
                }
            });
            /** * 文章居中对齐 */
            findViewById(R.id.action_align_center).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setAlignCenter();
                }
            });
            /** * 文章右对齐 */
            findViewById(R.id.action_align_right).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setAlignRight();
                }
            });
            /** * 无序排列 */
            findViewById(R.id.action_insert_bullets).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setBullets();
                }
            });
            /** * 有序排列 */
            findViewById(R.id.action_insert_numbers).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setNumbers();
                }
            });
            /** * 引用 */
            findViewById(R.id.action_blockquote).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.setBlockquote();
                }
            });
    
            /** * 插入图片 */
            findViewById(R.id.action_insert_image).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    ActivityCompat.requestPermissions(MainActivity.this, mPermissionList, 100);
                }
            });
            /** * 插入连接 */
            findViewById(R.id.action_insert_link).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    new MaterialDialog.Builder(MainActivity.this)
                            .title("将输入连接地址")
                            .items("http://blog.csdn.net/huangxiaoguo1")
                            .itemsCallbackSingleChoice(-1, new MaterialDialog.ListCallbackSingleChoice() { 
                                @Override
                                public boolean onSelection(MaterialDialog dialog, View itemView, int which, CharSequence text) { 
                                    dialog.dismiss();
                                    mEditor.focusEditor();
                                    mEditor.insertLink("http://blog.csdn.net/huangxiaoguo1",
                                            "http://blog.csdn.net/huangxiaoguo1");
                                    return false;
                                }
                            }).show();
                }
            });
            /** * 选择框 */
            findViewById(R.id.action_insert_checkbox).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    mEditor.focusEditor();
                    mEditor.insertTodo();
                }
            });
    
            /** * 获取并显示Html */
            findViewById(R.id.tv_showhtml).setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    Intent intent = new Intent(v.getContext(), WebViewActivity.class);
                    intent.putExtra("contextURL", mEditor.getHtml());
                    startActivity(intent);
                }
            });

##### 7.插入图片并使用屏幕宽度 #####

![l76UrojACLxQAHzXQQv.png][]

权限，我这里只是选着图片，关于拍照的自己可以去实现
    
      String[] mPermissionList = new String[]{ 
                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                Manifest.permission.READ_EXTERNAL_STORAGE};

@Override
        public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { 
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
            switch (requestCode) { 
                case 100:
                    boolean writeExternalStorage = grantResults[0] == PackageManager.PERMISSION_GRANTED;
                    boolean readExternalStorage = grantResults[1] == PackageManager.PERMISSION_GRANTED;
                    if (grantResults.length > 0 && writeExternalStorage && readExternalStorage) { 
                        getImage();
                    } else { 
                        Toast.makeText(this, "请设置必要权限", Toast.LENGTH_SHORT).show();
                    }
    
                    break;
            }
        }
    
        private void getImage() { 
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { 
                startActivityForResult(new Intent(Intent.ACTION_GET_CONTENT).setType("image/*"),
                        REQUEST_PICK_IMAGE);
            } else { 
                Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
                intent.addCategory(Intent.CATEGORY_OPENABLE);
                intent.setType("image/*");
                startActivityForResult(intent, REQUEST_PICK_IMAGE);
            }
        }
    
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
            super.onActivityResult(requestCode, resultCode, data);
            if (resultCode == Activity.RESULT_OK) { 
                switch (requestCode) { 
                    case REQUEST_PICK_IMAGE:
                        if (data != null) { 
                            String realPathFromUri = RealPathFromUriUtils.getRealPathFromUri(this, data.getData());
                            mEditor.insertImage("https://unsplash.it/2000/2000?random&58",
                                    "huangxiaoguo\" style=\"max-width:100%");
                            mEditor.insertImage(realPathFromUri, realPathFromUri + "\" style=\"max-width:100%");
    // mEditor.insertImage(realPathFromUri, realPathFromUri + "\" style=\"max-width:100%;max-height:100%");
    
                        } else { 
                            Toast.makeText(this, "图片损坏，请重新选择", Toast.LENGTH_SHORT).show();
                        }
    
                        break;
                }
            }
        }

注意这里 “\\” style=\\”max-width:100%”是让我们从手机选择的图片和网络加载的图片适配屏幕宽高，解决图片太大显示不全问题！  
\#\#\#\#三、项目代码结构目录图  
![lNpf4f9GmVDjmSJoYkA.png][]

\#\#\#\#四、参考文章  
richeditor-android github地址：[https://github.com/wasabeef/richeditor-android][https_github.com_wasabeef_richeditor-android]  
关于如何获得手机图片真正地址（realPathFromUri ）请看：[http://blog.csdn.net/huangxiaoguo1/article/details/78983582][http_blog.csdn.net_huangxiaoguo1_article_details_78983582]  
移动端强大的富文本编辑器richeditor-android

> 代码地址如下：  
> [http://www.demodashi.com/demo/14883.html][http_www.demodashi.com_demo_14883.html]

> 注：本文著作权归作者，由demo大师发表，拒绝转载，转载需要作者授权

[http_www.demodashi.com_demo_14883.html]: http://www.demodashi.com/demo/14883.html
[dlIOMnA7Mj6G2WrUZKY.gif]: /images/20220309/d6373bffb3324670b99137c620a28c74.png
[l76UrojACLxQAHzXQQv.png]: /images/20220309/380c899ddb5641af87e7525e0d19d5d0.png
[lNpf4f9GmVDjmSJoYkA.png]: /images/20220309/8cd502a0800e4a46a28f4976f10a4048.png
[https_github.com_wasabeef_richeditor-android]: https://github.com/wasabeef/richeditor-android
[http_blog.csdn.net_huangxiaoguo1_article_details_78983582]: http://blog.csdn.net/huangxiaoguo1/article/details/78983582