TextView 因为特殊字符（半角圆角等问题）在折行的时候各种不爽 ，不规则折行

          项目当中显示一个金额的范围 类似这种 ￥1200.00-￥1300.00 然后这行数据在显示的时候不能再一行全部显示需要换行，但是换行是从第二个￥开始的 然后第一行后面其实还能写，这就悲剧了，没看法百度了一下需要动源码，尼玛这我就不能忍了，后来还是自定义写了一下TextView 有点点 xiaoBUG 但是问题不大，展示少量文字还是可以的

        贴代码 不费话

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Build;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.widget.TextView;

import org.json.JSONArray;
import org.json.JSONException;

import java.lang.reflect.Field;

public class XRTextView extends TextView {
private final String namespace = "http://schemas.android.com/apk/res/android";
private String text;
private float textSize;
private float paddingLeft;
private float paddingRight;
private float marginLeft;
private float marginRight;
private int textColor;
private JSONArray colorIndex;
private Paint paint1 = new Paint();
private Paint paintColor = new Paint();
private float textShowWidth;
private float Spacing = 0;
private int mLineCount=-1;
private float LineSpacing = 1.3f;//行与行的间距

public XRTextView(Context context, AttributeSet attrs) {
super(context, attrs);
text = attrs.getAttributeValue(
namespace, "text");
textSize = attrs.getAttributeIntValue(namespace, "textSize", dip2px(context, 10));//字体大小
textColor = attrs.getAttributeIntValue(namespace, "textColor", Color.rgb(255, 98, 17));//字体颜色255 69 0
paddingLeft = attrs.getAttributeIntValue(namespace, "paddingLeft", 0);
paddingRight = attrs.getAttributeIntValue(namespace, "paddingRight", 0);
marginLeft = attrs.getAttributeIntValue(namespace, "marginLeft", 0);
marginRight = attrs.getAttributeIntValue(namespace, "marginRight", 0);
paint1.setTextSize(textSize);
paint1.setColor(textColor);
paint1.setAntiAlias(true);
paintColor.setAntiAlias(true);
paintColor.setTextSize(textSize);
paintColor.setColor(Color.BLUE);
}

public static int dip2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}

public XRTextView(Context context, float textSize, int textColor, float paddingLeft, float paddingRight, float marginLeft, float marginRight) {
super(context);
this.textSize = textSize;
this.textColor = textColor;
this.paddingLeft = paddingLeft;
this.paddingRight = paddingRight;
this.marginLeft = marginLeft;
this.marginRight = marginRight;
paint1.setTextSize(textSize);
paint1.setColor(textColor);
paint1.setAntiAlias(true);
paintColor.setAntiAlias(true);
paintColor.setTextSize(textSize);
paintColor.setColor(Color.BLUE);
}

public JSONArray getColorIndex() {
return colorIndex;
}

public void setColorIndex(JSONArray colorIndex) {
this.colorIndex = colorIndex;
}

/**
* 传入一个索引，判断当前字是否被高亮
*
* @param index
* @return
* @throws JSONException
*/
public boolean isColor(int index) throws JSONException {
if (colorIndex == null) {
return false;
}
for (int i = 0; i < colorIndex.length(); i++) {
JSONArray array = colorIndex.getJSONArray(i);
int start = array.getInt(0);
int end = array.getInt(1) - 1;
if (index >= start && index <= end) {
return true;
}

}

return false;
}
@Override
protected void onDraw(Canvas canvas) {
// textShowWidth = getMeasuredWidth() - paddingLeft - paddingRight - marginLeft - marginRight;
int lineCount = 0;
text = this.getText()+"";
if (TextUtils.isEmpty(text)) return;
char[] textCharArray = text.toCharArray();
// 已绘的宽度
float drawedWidth = 0;
float charWidth;
int length=textCharArray.length;
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;
}
/*boolean color = false;
try {
color = isColor(i);
} catch (JSONException e1) {
e1.printStackTrace();
}
if (color) {
canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
(lineCount + 1) * textSize * LineSpacing, paintColor);
} else {

canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
(lineCount + 1) * textSize * LineSpacing, paint1);
}*/
canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
(lineCount + 1) * textSize * LineSpacing, paint1);
if (textCharArray[i] > 127 && textCharArray[i] != '、' && textCharArray[i] != '，' && textCharArray[i] != '。' && textCharArray[i] != '：' && textCharArray[i] != '！') {
drawedWidth += charWidth + Spacing;

} else {
drawedWidth += charWidth;
}
}
}

public float getSpacing() {
return Spacing;
}

public void setSpacing(float spacing) {
Spacing = spacing;
}

public float getMYLineSpacing() {
return LineSpacing;
}

public void setMYLineSpacing(float lineSpacing) {
LineSpacing = lineSpacing;
}

public float getMYTextSize() {
return textSize;
}

public void setMYTextSize(float textSize) {
this.textSize = textSize;
paint1.setTextSize(textSize);
paintColor.setTextSize(textSize);
}

public void onMeasure(int w,int h){
super.onMeasure(w, h);
setMeasuredDimension(getMeasuredWidth(), (int) ((measureLineCount() + 1) * (int) textSize * LineSpacing + 10));
}

private int measureLineCount(){
if(mLineCount!=-1){
return  mLineCount;
}
if(Build.VERSION.SDK_INT>=16){
try {
LineSpacing=getLineSpacingMultiplier();
} catch (Exception e) {
e.printStackTrace();
}
}else{
try {
Field   field =   this.getClass().getDeclaredField("LineSpacing");
field.setAccessible(true);
LineSpacing=field.getFloat(this);
} catch (Exception e) {
e.printStackTrace();
}
}
textShowWidth = getMeasuredWidth() - paddingLeft - paddingRight - marginLeft - marginRight;
int lineCount = 0;
text = this.getText()+"";
if (TextUtils.isEmpty(text)) return 0;
char[] textCharArray = text.toCharArray();
// 已绘的宽度
float drawedWidth = 0;
float charWidth;
int length=textCharArray.length;
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;
}
if (textCharArray[i] > 127 && textCharArray[i] != '、' && textCharArray[i] != '，' && textCharArray[i] != '。' && textCharArray[i] != '：' && textCharArray[i] != '！') {
drawedWidth += charWidth + Spacing;

} else {
drawedWidth += charWidth;
}
}
mLineCount=lineCount;
return lineCount;
}

}