AIDE 自定义 编辑器

xeditText.java

package com.mycompany.myapp;
import android.widget.EditText;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View.OnKeyListener;
import android.view.KeyEvent;
import android.util.Log;
import android.view.View;
import android.text.TextWatcher;
import android.text.Editable;
import android.widget.Toast;


public class xeditText extends EditText
{
    private zjjk zj=new zjjk();
    public xeditText(Context context)
    {
        super(context);
    }
    public xeditText(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        addTextChangedListener(new TextWatcher(){
                public void afterTextChanged(Editable s)
                {
                    // TODO Auto-generated method stub
                    //s:变化后的所有字符
                    setaj("变了");
                }
                public void beforeTextChanged(CharSequence s, int start, int count, int after)
                {
                    // TODO Auto-generated method stub
                    //s:变化前的所有字符； start:字符开始的位置； count:变化前的总字节数；after:变化后的字节数
                }
                public void onTextChanged(CharSequence s, int start, int before, int count)
                {
                    // TODO Auto-generated method stub
                    //S：变化后的所有字符；start：字符起始的位置；before: 变化之前的总字节数；count:变化后的字节数
                }
            });


    }
    public xeditText(Context context, AttributeSet attrs, int defStyleAttr)
    {
        super(context, attrs, defStyleAttr);
    }
    /*
    @Override
    public boolean onTextContextMenuItem(int id)
    {
        if (id == 16908319)
        {
            setaj("全选");
            return false;
        }
        if (id == 16908328)
            setaj("选择");
        if (id == 16908320)
        {
            setaj("剪贴");
            return false;
        }   
        if (id == 16908321)
        {
            setaj("复制");
            return false;
        }
        if (id == 16908322)
        {
            setaj("粘贴");
            return false;
        }
        if (id == 16908324)
            setaj("输入法");
        return super.onTextContextMenuItem(id);
    }
    */
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event)
    {
        switch (keyCode)
        {
            case KeyEvent.KEYCODE_DPAD_LEFT://左
                setaj("左键");
                break;
            case KeyEvent.KEYCODE_DPAD_RIGHT://右
                setaj("右键");
                break;
            case KeyEvent.KEYCODE_DPAD_UP://上
                setaj("上键");
                break;
            case KeyEvent.KEYCODE_DPAD_DOWN://下
                setaj("下键");
                break;
        }
        return super.onKeyUp(keyCode, event);
    }

    @Override
    public boolean dispatchKeyEvent(KeyEvent event)
    {
        // TODO: Implement this method
        return super.dispatchKeyEvent(event);
    }

    @Override
    public void onEditorAction(int actionCode)
    {
        // TODO: Implement this method
        super.onEditorAction(actionCode);
    }

    @Override
    protected void onSelectionChanged(int selStart, int selEnd)
    {
        try
        {
            zj.getMyTextView().setgb(selStart, selEnd);
        }
        catch (Exception e)
        {

        }
        super.onSelectionChanged(selStart, selEnd);
    }

    public void setaj(String a)
    {
        MyTextView myTextView=zj.getMyTextView();
        if (myTextView != null)
        {
            zj.getMyTextView().setxjp(a); 
        }
    }
}

MyTextView.java

package com.mycompany.myapp;
import android.view.View;
import android.content.Context;
import android.util.AttributeSet;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.MotionEvent;
import android.os.Handler;
import android.widget.EditText;
import android.util.Log;
import android.view.inputmethod.InputMethodManager;
import android.graphics.Color;

public class MyTextView extends View
{

    private zjjk zj=new zjjk();
    private Paint paint,paint1,paint2;
    public MyTextView(Context context, AttributeSet attrs, int defStyleAttr)
    {
        super(context, attrs, defStyleAttr);
    }
    public MyTextView(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        text = "".split("\n", -1);
        paint = new Paint();
        paint.setColor(-16777216);//黑色
        paint.setTextSize(50);
        paint1 = new Paint();
        paint1.setColor(-176127);//红色
        paint1.setStrokeWidth(5);//设置画线宽度
        paint2 = new Paint();
        paint2.setColor(Color.parseColor("#88fd5100"));//选择行代码
    }
    public MyTextView(Context context)
    {
        super(context);
    }
    private String[] text;
    private String aj="日志";
    private int hhkd=50;//行号宽度
    private int hhgd=55;//行号高度
    private int dqh=0;//当前行
    private int dqwz=0;//当前位置
    private float hbydx,hbydy;//画布移动
    @Override
    protected void onDraw(Canvas canvas)
    {
        super.onDraw(canvas);
        canvas.translate(hbydx, hbydy);
        for (int i=0;i jsdqh){
            gby1=jsdqh;
            gby2=dqh;
            gbx1=jsdqwz;
            gbx2=dqwz;
        }else{
            gby1=dqh;
            gby2=jsdqh;
            gbx1=dqwz;
            gbx2=jsdqwz;
        }
        float ks=paint.measureText(text[gby1].substring(0, gbx1));
        float js=paint.measureText(text[gby1]);
        canvas.drawRect(ks + hhkd, 110 + hhgd * (gby1 - 1), js + hhkd, 110 + hhgd * gby1, paint2);
        for(int i=gby1+1;i 5 || Math.abs(y1) > 5)
                {
                    hbydx = jhbydx + (x1 * 2);
                    hbydy = jhbydy + (y1 * 2);
                    if (hbydx > 0)
                    {
                        hbydx = 0;
                    }
                    if (hbydy > 0)
                    {
                        hbydy = 0;
                    }
                }
                invalidate();
                return true;
            case MotionEvent.ACTION_UP://弹起
                float x=event.getX();
                float y = event.getY();
                if (x == anx && y == any)
                {
                    dksrf();//打开输入法
                    jsgb(x + Math.abs(hbydx), y + Math.abs(hbydy));
                }
                invalidate();
                return true;
        }
        return super.onTouchEvent(event);
    }
    private boolean szgbzj=false;//设置光标 输入框
    //计算光标
    public void jsgb(float x, float y)
    {
        hqsrknr();//获取输入框内容
        if (y > 50)
        {
            dqh = (int)Math.floor((y - 50) / hhgd);
            int cd=text.length - 1;
            if (dqh > cd)
            {
                dqh = cd;
            }
            try
            {
                jsdqwz(x);//计算当前位置
            }
            catch (Exception e)
            {}
            int wz=0;
            for (int i=0;i  x)
        {
            dqwz = 0;
            gbwz = hhkd;
            return;
        }
        for (int i=0;i  x)
            {
                dqwz = i;
                gbwz = wz;
                return;
            }
        }
        gbwz = paint.measureText(txt) + hhkd;
        dqwz = txt.length();

    }
    //设置光标 输入框传递过来
    private int jsdqh,jsdqwz;//结束 当前行 当前位置
    private float jsgbwz;//画结束 光标位置
    public void setgb(int ks, int js)
    {
        if (szgbzj)
        {
            return;
        }
        try
        {
            hqsrknr();//获取输入框内容
            String txt=zj.getEditText().getText().toString();
            String[] txtz=txt.substring(0, ks).split("\n", -1);
            dqh = txtz.length - 1;
            dqwz = txtz[dqh].length();
            gbwz = paint.measureText(txtz[dqh].substring(0, dqwz)) + hhkd;
            if (ks != js)
            {
                txtz = txt.substring(0, js).split("\n", -1);
                jsdqh = txtz.length - 1;
                jsdqwz = txtz[jsdqh].length();
                jsgbwz = paint.measureText(txtz[jsdqh].substring(0, jsdqwz)) + hhkd;
            }
            else
            {
                jsdqh = dqh;//当前行
                jsdqwz = dqwz;//当前位置
                jsgbwz = gbwz;//画光标位置  
            }
            invalidate();
        }
        catch (Exception e)
        {
            Log.e("aaa", "报错=" + e);
        }
    }
    //获取输入框内容
    public void hqsrknr()
    {
        EditText editText=zj.getEditText();
        if (editText != null)
        {
            text = editText.getText().toString().split("\n", -1); 
        }
        hhkd = (int)paint.measureText(text.length + "") + 20;
    }
    //设置小键盘
    public void setxjp(String a)
    {
        aj = a;
        if (a.equals("变了"))
        {
            int wz=zj.getEditText().getSelectionStart();
            setgb(wz, wz);
        }
        invalidate();
    }
    //输入法 打开 关闭
    private InputMethodManager imm = (InputMethodManager)getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
    public void dksrf()
    {
       imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);//开启
    }
}

package com.mycompany.myapp;
import android.widget.EditText;

public class zjjk
{
    private static EditText editText;
    public void setEditText(EditText a){
        editText=a;
    }
    public EditText getEditText(){
        return editText;
    }
    private static MyTextView myTextView;
    public void setMyTextView(MyTextView a){
        myTextView=a;
    }
    public MyTextView getMyTextView(){
        return myTextView;
    }
}

package com.mycompany.myapp;

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    private zjjk zj=new zjjk();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        EditText editText=findViewById(R.id.editText);
        zj.setEditText(editText);
        MyTextView myTextView=findViewById(R.id.text);
        zj.setMyTextView(myTextView);
    }
    
}