解决TextView排版不齐问题----自定义TextVIew

import org.json.JSONArray;import org.json.JSONException;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.view.View;import android.widget.TextView;public class MarginTextView 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 float LineSpacing = 1.3f;//行与行的间距public MarginTextView(Context context, AttributeSet attrs) {super(context, attrs);text = attrs.getAttributeValue(namespace, "text");/**资源id---形式为@2130968673*/String  color_resource_id=attrs.getAttributeValue(namespace, "textColor");/**去掉资源id前面的@*/String resource_id2=color_resource_id.substring(1);System.out.println("color_name==="+resource_id2+",resource_id="+color_resource_id);/*** * 根据R文件中的颜色的资源id获取颜色对应的int数值 */int color_int=getResources().getColor(Integer.parseInt(resource_id2));System.out.println("color_int=="+color_int);String textSize_yuanshi=attrs.getAttributeValue(namespace, "textSize");String textSize_2=textSize_yuanshi.substring(0, textSize_yuanshi.indexOf("."));System.out.println("textSize_yuanshi="+textSize_yuanshi+",textSize_2=="+textSize_2);textSize=Integer.parseInt(textSize_2);//字体大小 textColor=color_int;System.out.println("textColor================"+textColor);//-8388480paddingLeft = 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.WHITE);}public MarginTextView(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.WHITE);}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;}@Overrideprotected void onDraw(Canvas canvas) {//super.onDraw(canvas);View view=(View)this.getParent();textShowWidth=view.getMeasuredWidth()-paddingLeft - paddingRight - marginLeft - marginRight;int lineCount = 0;text = this.getText().toString();//.replaceAll("\n", "\r\n");if(text==null)return;char[] textCharArray = text.toCharArray();// 已绘的宽度float drawedWidth = 0;float charWidth;for (int i = 0; i < textCharArray.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) {// TODO Auto-generated catch blocke1.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);}if(textCharArray[i] > 127 && textCharArray[i] != '、' && textCharArray[i] != '，' && textCharArray[i] != '。' && textCharArray[i] != '：' && textCharArray[i] != '！'){drawedWidth += charWidth + Spacing;}else{drawedWidth += charWidth;}}setHeight((int) ((lineCount + 1) * (int) textSize * LineSpacing + 10));}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);}}

将网上的代码稍微整理了一下,可以使用。但是设置字体的大小上与原来的TextView的设置有些区别，表现在:如果都设置成12.0sp,这个地方的MarginTextView会显得字很小。

原因还没有去查找。