网上搜了搜有发现这个框架 MentionEditText,但不太适合项目需求,于是手撸一个.
需求:
- @*** 为蓝色
- 可以在末尾或中间删除整体
- 手动输入 @ 时,跳转到选择人页面
- 可以存储相关参数
源码:
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.text.Editable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.text.style.ForegroundColorSpan;
import android.text.style.ImageSpan;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.View;
import android.widget.EditText;
import com.aaa.a.R;
import com.aaa.newface.ChatEmoji;
import com.aaa.newface.FaceConversionUtil;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* @ 整体的EditText
* Created by Boyko on 2017/11/1.
*/
public class AtEditText extends EditText {
ArrayList atList;
ArrayList emojiList;
/**
* key:表情名称
* value:表情id
*/
HashMap emojiMap;
private Context context;
private OnAtInputListener mOnAtInputListener;
public AtEditText(Context context) {
super(context);
initView(context);
}
public AtEditText(Context context, AttributeSet attrs) {
super(context, attrs);
initView(context);
}
public AtEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView(context);
}
private void initView(Context context) {
this.context = context;
atList = new ArrayList<>();
emojiList = new ArrayList<>();
emojiMap = new HashMap<>();
setOnKeyListener(new MyOnKeyListener(this));
addTextChangedListener(new MentionTextWatcher());
}
/**
* 添加@的内容
*
* @param parm 最多传4个 ,分别对应 id,name,parm1,parm2
*/
public void addAtContent(String... parm) {
atList.add(new Entity(parm[0], parm[1], parm[2]));
// 光标位置之前的字符是否是 @ , 如果不是 加上一个@
int selectionStart = getSelectionStart();
// 获取当前内容
String sss = getText().toString();
// 获取光标前以为字符
String s = selectionStart != 0 ? sss.toCharArray()[selectionStart - 1] + "" : "";
// 将内容插入 , 改变文字颜色
setText(changeTextColor(sss.substring(0, selectionStart) + (!s.equals("@") ? "@" : "") + parm[1] + sss.substring(selectionStart, sss.length()))); //字符串替换，删掉符合条件的字符串
// 设置光标位置
setSelection((sss.substring(0, selectionStart) + (!s.equals("@") ? "@" : "") + parm[1]).length());
}
/**
* 添加聊天表情
* @param emoji
*/
public void addChatEmoji(ChatEmoji emoji) {
emojiList.add(emoji);
emojiMap.put(emoji.getCharacter(), emoji.getId());
// 获取光标当前位置
int selectionStart = getSelectionStart();
// 获取当前内容
String sss = getText().toString();
// 将内容插入 , 改变文字颜色
setText(changeTextColor(sss.substring(0, selectionStart) + emoji.getCharacter() + sss.substring(selectionStart, sss.length()))); //字符串替换，删掉符合条件的字符串
// 设置光标位置
setSelection((sss.substring(0, selectionStart) + emoji.getCharacter()).length());
}
private SpannableString changeTextColor(String sText) {
int startIndex = 0;
List spanIndexes = getSpanIndexes(sText);
SpannableString spanText = new SpannableString(sText);
if (spanIndexes != null && spanIndexes.size() != 0) {
for (int i = 0; i < spanIndexes.size(); i++) {
if (i % 2 == 0) { // 开始位置
startIndex = spanIndexes.get(i);
} else { // 结束位置
spanText.setSpan(new ForegroundColorSpan(context.getResources().getColor(R.color.navyblue)), startIndex, spanIndexes.get(i), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
return spanText;
// return changeChatEmoji(sText, spanText);
}
/**
* 添加表情
* @param sText 文本
*/
private SpannableString changeChatEmoji(String sText,SpannableString spanText) {
int startIndex = 0;
List spanIndexes = getEmojiIndexes(sText);
if (spanIndexes != null && spanIndexes.size() != 0) {
for (int i = 0; i < spanIndexes.size(); i++) {
if (i % 2 == 0) { // 开始位置
startIndex = spanIndexes.get(i);
} else { // 结束位置
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), emojiMap.get(sText.substring(startIndex, spanIndexes.get(i))));
bitmap = Bitmap.createScaledBitmap(bitmap, 50, 50, true);
ImageSpan imageSpan = new ImageSpan(context, bitmap);
spanText.setSpan(imageSpan, startIndex, spanIndexes.get(i), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
return spanText;
}
public List getEmojiIndexes(String sText) {
int endIndex = 0;
int startIndex = 0;
List spanIndexes = new ArrayList();
for (int i = 0; i < emojiList.size(); i++) {
String tempname = emojiList.get(i).getCharacter();
if ((startIndex = sText.indexOf(tempname, endIndex)) != -1) {
endIndex = startIndex + tempname.length();
spanIndexes.add(startIndex);//name 的开始索引，键值为偶数，从0开始
spanIndexes.add(startIndex + tempname.length()); //name 的结束索引，键值为奇数，从1开始
}
}
return spanIndexes;
}
public List getSpanIndexes(String sText) {
int endIndex = 0;
int startIndex = 0;
List spanIndexes = new ArrayList();
for (int i = 0; i < atList.size(); i++) {
String tempname = "@" + atList.get(i).getName();
if ((startIndex = sText.indexOf(tempname, endIndex)) != -1) {
endIndex = startIndex + tempname.length();
spanIndexes.add(startIndex);//name 的开始索引，键值为偶数，从0开始
spanIndexes.add(startIndex + tempname.length()); //name 的结束索引，键值为奇数，从1开始
}
}
return spanIndexes;
}
private class MyOnKeyListener implements OnKeyListener {
private EditText editText;
public MyOnKeyListener(EditText editText) {
this.editText = editText;
}
@Override
public boolean onKey(View view, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_DEL && event.getAction() == KeyEvent.ACTION_DOWN) { //当为删除键并且是按下动作时执行
return myDelete(1) || myDelete(2);
}
return false;
}
/**
* 删除方法
* @param type [1] @ [2] 表情
* @return
*/
private boolean myDelete(int type) {
String content = editText.getText().toString();
int selectionStart = editText.getSelectionStart();
int endIndex = 0;
int startIndex;
int deleteNum = 0;
List spanIndexes = new ArrayList();
for (int i = 0; i < ((type == 1) ? atList.size() : emojiList.size()); i++) {
String name = type == 1 ? "@" + atList.get(i).getName() : emojiList.get(i).getCharacter();
if ((startIndex = content.indexOf(name, endIndex)) != -1) {
if (startIndex > selectionStart) break; // 如果开始索引值,大于光标位置,那么退出遍历
endIndex = startIndex + name.length();
deleteNum = i;
spanIndexes.add(startIndex);//name 的开始索引，键值为偶数，从0开始
spanIndexes.add(startIndex + name.length()); //name 的结束索引，键值为奇数，从1开始
if (endIndex > selectionStart) break; // 如果结束索引值,大于光标位置,那么退出遍历
}
}
// spanIndexes 必须大于0 且 光标位置不能大于 结束索引位置
if (spanIndexes.size() > 0 && spanIndexes.get(spanIndexes.size() - 2) < selectionStart && spanIndexes.get(spanIndexes.size() - 1) >= selectionStart) {
editText.setText(changeTextColor(content.substring(0, spanIndexes.get(spanIndexes.size() - 2)) + content.substring(spanIndexes.get(spanIndexes.size() - 1)))); //字符串替换，删掉符合条件的字符串
editText.setSelection(spanIndexes.get(spanIndexes.size() - 2)); // 设置光标位置
if(type == 1)
atList.remove(deleteNum);
else
emojiList.remove(deleteNum); //删除对应实体
return true;
} else {
return false;
}
}
}
private class MentionTextWatcher implements TextWatcher {
//若从整串string中间插入字符，需要将插入位置后面的range相应地挪位
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence charSequence, int index, int i1, int count) {
if (count == 1 && !TextUtils.isEmpty(charSequence)) {
char mentionChar = charSequence.toString().charAt(index);
if ('@' == mentionChar && mOnAtInputListener != null) {
mOnAtInputListener.OnAtCharacterInput();
}
}
}
@Override
public void afterTextChanged(Editable editable) {
}
}
/**
* 刷新@列表
*/
public void refreshAtList(String... parm) {
atList.add(new Entity(parm[0], parm[1], parm[2]));
setText(changeTextColor(getText().toString()));
}
public ArrayList getAtList() {
return atList;
}
public void setOnAtInputListener(OnAtInputListener OnAtInputListener) {
mOnAtInputListener = OnAtInputListener;
}
public interface OnAtInputListener {
void OnAtCharacterInput();
}
/**
* @*** 格式的实体类
*/
public class Entity {
String id;
String name;
String parm1;
String parm2;
/**
* @param parm 最多传4个 ,分别对应 id,name,parm1,parm2
*/
public Entity(String... parm) {
if (parm.length >= 1)
this.id = parm[0];
if (parm.length >= 2)
this.name = parm[1];
if (parm.length >= 3)
this.parm1 = parm[2];
if (parm.length >= 4)
this.parm2 = parm[3];
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getParm1() {
return parm1;
}
public void setParm1(String parm1) {
this.parm1 = parm1;
}
public String getParm2() {
return parm2;
}
public void setParm2(String parm2) {
this.parm2 = parm2;
}
}
}
以上是全部内容,如有错误请指正.