转载请注明出处：https://blog.csdn.net/u011038298/article/details/85165244
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LinearLayout llContent = findViewById(R.id.ll_content);
for (int i = 0; i < 6; i++) {
TextView textView = new TextView(this);
textView.setTextSize(14);
textView.setGravity(Gravity.CENTER);
textView.setTextColor(Color.WHITE);
textView.setPadding(0, 20, 0, 20);
setText(textView, i);
llContent.addView(textView);
}
}
/**
* 方法描述：设置文本内容
**/
private void setText(TextView textView, int position) {
String text = "注意：打雷下雨了，快回家收衣服吧！";
switch (position) {
case 0:
// 根据文本下标，指定单个部分文字变色
textView.setText(StringDesignUtil.getSpannableStringBuilder(text, Color.RED, 3, 5));
break;
case 1:
// 指定关键字变色，并且给相对应的关键指定颜色
textView.setText(StringDesignUtil.getSpannableStringBuilder(text, new String[]{"打雷", "收衣服"}, new int[]{Color.BLUE, Color.RED}));
break;
case 2:
// 文本由关键字拼接而成，文本内容与字体颜色一一对应显示
textView.setText(StringDesignUtil.getSpannableStringBuilder(
new String[]{"注意：", "打雷", "下雨了，快回家", "收衣服", "吧！"},
new int[]{Color.WHITE, Color.RED, Color.WHITE, Color.GREEN, Color.WHITE}));
break;
case 3:
// 根据关键字，指定单个部分文字颜色
textView.setText(StringDesignUtil.getSpanned(text, "打雷", "#e607bf"));
break;
case 4:
// 指定关键字变色，并且给相对应的关键指定颜色
textView.setText(StringDesignUtil.getSpanned(text,
new String[]{"打雷", "收衣服"},
new String[]{"#ff0000", "#185af0"}));
break;
case 5:
// 文本由关键字拼接而成，文本内容与字体颜色一一对应显示
textView.setText(StringDesignUtil.getSpanned(
new String[]{"注意：", "打雷", "下雨了，快回家", "收衣服", "吧！"},
new String[]{"#ffffff", "#ff0000", "#ffffff", "#185af0", "#ffffff",}));
break;
}
}
}
import android.text.Html;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.ForegroundColorSpan;
/**
* 类描述：字符串设计工具类
*/
public class StringDesignUtil {
/**
* 方法描述：根据文本下标，指定单个部分文字变色
**/
public static SpannableStringBuilder getSpannableStringBuilder(String text, int color, int startIndex, int entIndex) {
SpannableStringBuilder builder = new SpannableStringBuilder(text);
if (startIndex >= 0 && entIndex > startIndex && entIndex <= text.length()) {
builder.setSpan(new ForegroundColorSpan(color), startIndex, entIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
return builder;
}
/**
* 方法描述：指定关键字变色，并且给相对应的关键指定颜色
**/
public static SpannableStringBuilder getSpannableStringBuilder(String text, String texts[], int color[]) {
SpannableStringBuilder builder = new SpannableStringBuilder(text);
if (texts != null) {
for (int i = 0; i < texts.length; i++) {
String value = texts[i];
if (!TextUtils.isEmpty(value) && text.contains(value)) {
if (color != null && color.length > i) {
int startIndex = text.indexOf(value);
int entIndex = startIndex + value.length();
if (entIndex > startIndex && entIndex <= text.length()) {
builder.setSpan(new ForegroundColorSpan(color[i]), startIndex, entIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
}
}
return builder;
}
/**
* 方法描述： 文本由关键字拼接而成，文本内容与字体颜色一一对应显示
**/
public static SpannableStringBuilder getSpannableStringBuilder(String text[], int color[]) {
SpannableStringBuilder builder = new SpannableStringBuilder();
if (text != null) {
for (int i = 0; i < text.length; i++) {
int startIndex = builder.length();
builder.append(text[i]);
if (color != null && color.length > i) {
builder.setSpan(new ForegroundColorSpan(color[i]), startIndex, builder.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
return builder;
}
/**
* 根据关键字，指定单个部分文字颜色
**/
public static Spanned getSpanned(String text, String keyword, String colorValue) {
return Html.fromHtml(text.replace(keyword, "<font color=" + colorValue + ">" + keyword + "</font>"));
}
/**
* 指定关键字变色，并且给相对应的关键指定颜色
**/
public static Spanned getSpanned(String text, String keyword[], String colorValue[]) {
if (keyword != null && colorValue != null) {
for (int i = 0; i < keyword.length; i++) {
if (colorValue.length > i) {
text = text.replace(keyword[i], "<font color=" + colorValue[i] + ">" + keyword[i] + "</font>");
}
}
}
return Html.fromHtml(text);
}
/**
* 文本由关键字拼接而成，文本内容与字体颜色一一对应显示
**/
public static Spanned getSpanned(String keyword[], String colorValue[]) {
StringBuffer buffer = new StringBuffer();
if (keyword != null && colorValue != null) {
for (int i = 0; i < keyword.length; i++) {
if (colorValue.length > i) {
buffer.append("<font color=" + colorValue[i] + ">" + keyword[i] + "</font>");
}
}
}
return Html.fromHtml(buffer.toString());
}
}
运行效果图：
