android 更改TextView部分字体颜色、大小、背景
16lz
2021-01-24
android 更改TextView部分字体颜色、大小、背景
一、效果图
二、工具类
TextColorSizeHelper.java
/** * Created by bjxiaxueliang on 2017/7/21. * * 具体使用可参考： * https://blog.csdn.net/xiaxl/article/details/72594038 */
public class TextColorSizeHelper { /** * 更改字体大小、颜色、增加点击事件 * * @param context * @param text * @param spanInfos * @return */ public static SpannableStringBuilder getTextSpan(Context context, String text, List<SpanInfo> spanInfos ) { if (context == null || TextUtils.isEmpty(text) || spanInfos == null || spanInfos.size() == 0) { return null; } SpannableStringBuilder style = new SpannableStringBuilder(text); int begin = 0; int end = 0; for (int i = 0; i < spanInfos.size(); i++) { final SpanInfo spanBean = spanInfos.get(i); // if (spanBean != null && !TextUtils.isEmpty(spanBean.subText)) { // 从后边向前寻找 if (spanBean.findFromEnd) { begin = text.lastIndexOf(spanBean.subText); } else { begin = text.indexOf(spanBean.subText, end); } end = begin + spanBean.subText.length(); // 字号有变动 if (spanBean.subTextSize > 0) { style.setSpan(new AbsoluteSizeSpan(spanBean.subTextSize), begin, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } // 字体颜色 if (spanBean.subTextColor != 0) { // 背景圆角 if (spanBean.subTextBgRadius > 0 && spanBean.subTextBgColor != 0) { style.setSpan(new RadiusBackgroundSpan( spanBean.subTextColor, spanBean.subTextBgColor, spanBean.subTextBgRadius ), begin, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } // 字体点击 if (spanBean.clickableSpan != null) { style.setSpan(new ClickableSpan() { @Override public void onClick(@NonNull View widget) { if (spanBean.clickableSpan != null) { spanBean.clickableSpan.onClick(widget); } } @Override public void updateDrawState(TextPaint ds) { // set textColor ds.setColor(spanBean.subTextColor); // 下划线 ds.setUnderlineText(spanBean.clickSpanUnderline); } }, begin, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } // 字体颜色 else { style.setSpan(new ForegroundColorSpan(spanBean.subTextColor), begin, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } } } } return style; } // ############################################### public static class SpanInfo { // 文字 private String subText; // 像素 private int subTextSize; // Color.parseColor("#af5050"); private int subTextColor; // // sub txt背景相关 private int subTextBgColor; private int subTextBgRadius; // // 点击相关 private ClickableSpan clickableSpan; // 是否展示下划线 private boolean clickSpanUnderline; // // 从前向后寻找 or 从后向前寻找 private boolean findFromEnd; // 不展示背景圆角 不可点击 public SpanInfo(String subText, int subTextSize, int subTextColor, boolean findFromEnd) { this(subText, subTextSize, subTextColor, 0, -1, null, false, findFromEnd); } // 不展示背景圆角 可点击 public SpanInfo(String subText, int subTextSize, int subTextColor, ClickableSpan clickableSpan, boolean clickSpanUnderline, boolean findFromEnd) { this(subText, subTextSize, subTextColor, 0, -1, clickableSpan, clickSpanUnderline, findFromEnd); } // 展示背景圆角 不可点击 public SpanInfo(String subText, int subTextSize, int subTextColor, int subTextBgColor, int subTextBgRadius, boolean findFromEnd) { this(subText, subTextSize, subTextColor, subTextBgColor, subTextBgRadius, null, false, findFromEnd); } // 展示背景圆角 public SpanInfo(String subText, int subTextSize, int subTextColor, int subTextBgColor, int subTextBgRadius, ClickableSpan clickableSpan, boolean clickSpanUnderline, boolean findFromEnd) { // sub txt this.subText = subText; this.subTextSize = subTextSize; this.subTextColor = subTextColor; // sub txt背景相关 this.subTextBgColor = subTextBgColor; this.subTextBgRadius = subTextBgRadius; // 点击相关 this.clickableSpan = clickableSpan; this.clickSpanUnderline = clickSpanUnderline; // 从前向后寻找 or 从后向前寻找 this.findFromEnd = findFromEnd; } @Override public String toString() { StringBuffer sb = new StringBuffer(); sb.append("subText: "); sb.append(subText); sb.append(" subTextSize: "); sb.append(subTextSize); sb.append(" findFromEnd: "); sb.append(findFromEnd); return sb.toString(); } } public static class RadiusBackgroundSpan extends ReplacementSpan { private int mSize; private int mTextColor; private int mRadiusBgColor; private int mRadius; /** * @param radiusBgColor 背景颜色 * @param radius 圆角半径 */ public RadiusBackgroundSpan(int textColor, int radiusBgColor, int radius) { this.mTextColor = textColor; this.mRadiusBgColor = radiusBgColor; this.mRadius = radius; } @Override public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) { mSize = (int) (paint.measureText(text, start, end) + mRadius); return mSize; } @Override public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) { int color = paint.getColor();//保存文字颜色 paint.setColor(mRadiusBgColor);//设置背景颜色 paint.setAntiAlias(true);// 设置画笔的锯齿效果 Log.i("pyt", y + ""); RectF oval = new RectF(x, y + paint.ascent(), x + mSize, y + paint.descent()); //设置文字背景矩形，x为span其实左上角相对整个TextView的x值，y为span左上角相对整个View的y值。paint.ascent()获得文字上边缘，paint.descent()获得文字下边缘 canvas.drawRoundRect(oval, mRadius, mRadius, paint);//绘制圆角矩形，第二个参数是x半径，第三个参数是y半径 paint.setColor(mTextColor);//恢复画笔的文字颜色 canvas.drawText(text, start, end, x + mRadius / 2, y, paint);//绘制文字 } }}三、使用举例
/** * 1、颜色 */ String text = "更改部分字体的颜色！"; String subText01 = "字体"; String subText02 = "颜色"; List<TextColorSizeHelper.SpanInfo> list = new ArrayList<TextColorSizeHelper.SpanInfo>(); list.add( new TextColorSizeHelper.SpanInfo( subText01, -1, Color.parseColor("#43B478"), true ) ); list.add( new TextColorSizeHelper.SpanInfo( subText02, -1, Color.parseColor("#43B478"), true ) ); mTextView01.setText(TextColorSizeHelper.getTextSpan(this, text, list)); /** * 2、颜色 和 大小 */ text = "更改部分字体的颜色和大小！"; subText01 = "颜色"; subText02 = "大小"; list = new ArrayList<TextColorSizeHelper.SpanInfo>(); list.add( new TextColorSizeHelper.SpanInfo( subText01, 100, Color.parseColor("#43B478"), true ) ); list.add( new TextColorSizeHelper.SpanInfo( subText02, 100, Color.parseColor("#43B478"), true ) ); mTextView02.setText(TextColorSizeHelper.getTextSpan(this, text, list)); /** * 3、颜色 和 圆角背景 */ text = "添加字体背景和圆角！"; subText01 = "背景"; subText02 = "圆角"; list = new ArrayList<TextColorSizeHelper.SpanInfo>(); list.add( new TextColorSizeHelper.SpanInfo( subText01, 80, Color.parseColor("#43B478"), // 圆角背景 Color.parseColor("#ffffff"), 9, true ) ); list.add( new TextColorSizeHelper.SpanInfo( subText02, 80, Color.parseColor("#43B478"), // 圆角背景 Color.parseColor("#ffffff"), 9, true ) ); mTextView03.setText(TextColorSizeHelper.getTextSpan(this, text, list)); /** * 4、可点击 */ text = "这是一段可点击链接文字"; subText01 = "可点击链接"; list = new ArrayList<TextColorSizeHelper.SpanInfo>(); list.add( new TextColorSizeHelper.SpanInfo( subText01, -1, Color.parseColor("#43B478"), new ClickableSpan() { @Override public void onClick(@NonNull View widget) { // TODO 响应点击事件 } }, true, true ) ); mTextView04.setText(TextColorSizeHelper.getTextSpan(this, text, list)); mTextView04.setMovementMethod(LinkMovementMethod.getInstance()); /** * 5、可点击 */ text = "这是一段可点击链接无下划线文字"; subText01 = "可点击链接无下划线"; list = new ArrayList<TextColorSizeHelper.SpanInfo>(); list.add( new TextColorSizeHelper.SpanInfo( subText01, -1, Color.parseColor("#43B478"), new ClickableSpan() { @Override public void onClick(@NonNull View widget) { // TODO 响应点击事件 } }, false, true ) ); mTextView05.setText(TextColorSizeHelper.getTextSpan(this, text, list)); mTextView05.setMovementMethod(LinkMovementMethod.getInstance());RadiusBackgroundSpan.java
RadiusBackgroundSpan.java工具类来自于以下链接：
http://blog.csdn.net/industriously/article/details/53493392
public class RadiusBackgroundSpan extends ReplacementSpan { private int mSize; private int mTextColor; private int mRadiusBgColor; private int mRadius; /** * @param radiusBgColor 背景颜色 * @param radius 圆角半径 */ public RadiusBackgroundSpan(int textColor, int radiusBgColor, int radius) { this.mTextColor = textColor; this.mRadiusBgColor = radiusBgColor; this.mRadius = radius; } @Override public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) { mSize = (int) (paint.measureText(text, start, end) + 2 * mRadius); return mSize; } @Override public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) { int color = paint.getColor();//保存文字颜色 paint.setColor(mRadiusBgColor);//设置背景颜色 paint.setAntiAlias(true);// 设置画笔的锯齿效果 Log.i("pyt", y + ""); RectF oval = new RectF(x, y + paint.ascent(), x + mSize, y + paint.descent()); //设置文字背景矩形，x为span其实左上角相对整个TextView的x值，y为span左上角相对整个View的y值。paint.ascent()获得文字上边缘，paint.descent()获得文字下边缘 canvas.drawRoundRect(oval, mRadius, mRadius, paint);//绘制圆角矩形，第二个参数是x半径，第三个参数是y半径 paint.setColor(mTextColor);//恢复画笔的文字颜色 canvas.drawText(text, start, end, x + mRadius, y, paint);//绘制文字 }}更多相关文章
- 如何设置一个activity透明
- Android(安卓)中GridView上图下字、GridView显示文字
- Android颜色选择器库
- android中textview的文字处理--同一段文字部分文字作高亮或者显
- android selector(zhuan)
- Android(安卓)屏幕常亮
- android 背景图片的设置
- MaterialDesign中控件属性表
- Android(安卓)平铺背景图片