【TextView】自定义TextView中文换行排版问题修复

来源：互联网发布：贵阳大数据就是吹牛编辑：程序博客网时间：2024/05/22 17:11

以下为解决排版核心代码

public class MyTextView extends TextView {    private String text;    private float textSize;    private float paddingLeft;    private float paddingRight;    private float paddingTop;    private float paddingBottom;    private int textColor;    private Paint paint1 = new Paint();    private float textShowWidth;    private int lineSpace;//行间距    public MyTextView(Context context, AttributeSet attrs) {        super(context, attrs);        text = this.getText().toString();        textSize = this.getTextSize();        textColor = getResources().getColor(R.color.color_black_333333);        paddingLeft = this.getPaddingLeft();        paddingRight = this.getPaddingRight();        paddingTop = this.getPaddingTop();        paddingBottom = this.getPaddingBottom();        lineSpace = (int) paddingTop/2;        paint1.setTextSize(textSize);        paint1.setColor(textColor);        paint1.setAntiAlias(true);    }    /**     * 设置画笔颜色     * @param color     */    public void setPaintColor(int color){        paint1.setColor(color);    }    @Override    public void onDraw(Canvas canvas) {        textShowWidth = this.getMeasuredWidth() - paddingLeft - paddingRight;        int lineCount = 0;        text = this.getText().toString();        if (text == null)            return;        char[] textCharArray = text.toCharArray();        float drawedWidth = 0;        float charWidth;        int length =textCharArray.length;        float space=0;        for (int i = 0; i < length; i++) {            charWidth = paint1.measureText(textCharArray, i, 1);            if (textCharArray[i] == '\n') {                lineCount++;                drawedWidth = 0;                continue;            }            if (textShowWidth - drawedWidth < charWidth) {                lineCount++;                drawedWidth = 0;            }            //调整行间距            if(lineCount==0){                space = paddingTop;            }else {                space = paddingTop+(lineCount+1)*lineSpace;            }            canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,                    (lineCount + 1) * textSize+ space, paint1);            drawedWidth += charWidth;        }        //修正高度        setHeight((lineCount + 1) * ((int) textSize) +(int) (paddingTop+paddingBottom+(lineCount+1)*lineSpace));    }}

不做过多的阐述，添加了行间距的设置，下图长篇的内容区域则为效果

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