EditText行间距增加问题和光标位置wrt行

Question

我试图创建一个EditText这样的,每行之间的空间应该是20 dp.请看下面的图片.

如果我使用额外的行间距,则光标位置未与行正确对齐.我已经实现了行间距,但光标没有与行对齐.请参阅下图中突出显示的红色框.

package com.example.dev_task_197_keyboard_accesory;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.EditText;

public class LineEditText extends EditText {
    private Rect mRect;
    private Paint mPaint;

    // we need this constructor for LayoutInflater
    public LineEditText(Context context, AttributeSet attrs) {
        super(context, attrs);

        mRect = new Rect();
        mPaint = new Paint();
        mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
        mPaint.setColor(Color.BLUE); //SET YOUR OWN COLOR HERE
        setMinLines(15);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        int height = getHeight();
        int line_height = getLineHeight();

        int count = height / line_height;
        if(getLineCount() > count){
            count = getLineCount();
        }
        Rect r = mRect;
        Paint paint = mPaint;
        int baseline = getLineBounds(0, r);

        for (int i = 0; i < count; i++) {

            canvas.drawLine(r.left, baseline + 1, r.right, baseline + 1, paint);
            baseline += getLineHeight();//next line
        }

        // Finishes up by calling the parent method
        super.onDraw(canvas);
    }
}

对于行间距,添加lineSpaceExtra和lineSpaceMultiplier参数xml.

请建议.

Answer 1

可以在此处找到解决您的问题的两种可能的选择。我测试了第一个（仅适用于 API 12+），它对我有用。