/
SpannableStringBuilderActivity.java
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/
SpannableStringBuilderActivity.java
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package com.tiny.demo.firstlinecode.uicomponents.textview;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.ImageSpan;
import android.text.style.StyleSpan;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.tiny.demo.firstlinecode.R;
import com.tinytongtong.tinyutils.ScreenUtils;
import butterknife.BindView;
import butterknife.ButterKnife;
/**
* @Description: SpannableStringBuilder
* @Author wangjianzhou@qding.me
* @Date 2019-09-02 13:44
* @Version
*/
public class SpannableStringBuilderActivity extends AppCompatActivity {
@BindView(R.id.tv)
TextView tv;
@BindView(R.id.tv1)
TextView tv1;
@BindView(R.id.tv2)
TextView tv2;
@BindView(R.id.tv3)
TextView tv3;
@BindView(R.id.tv4)
TextView tv4;
@BindView(R.id.tv5)
TextView tv5;
@BindView(R.id.tv6)
TextView tv6;
public static void actionStart(Context context) {
Intent starter = new Intent(context, SpannableStringBuilderActivity.class);
context.startActivity(starter);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_spannable_string_builder);
ButterKnife.bind(this);
String desc = "天行健，君子以自强不息；地势坤，君子以厚德载物。";
SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(desc);
spannableStringBuilder.setSpan(new StyleSpan(Typeface.BOLD), 4, 6, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
spannableStringBuilder.setSpan(new StyleSpan(Typeface.BOLD), 7, 9, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
spannableStringBuilder.setSpan(new StyleSpan(Typeface.BOLD), 16, 18, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
spannableStringBuilder.setSpan(new StyleSpan(Typeface.BOLD), 19, 23, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
tv.setText(spannableStringBuilder);
// SpannableStringBuilder + ImageSpan 给文本添加图片
String desc3 = "天行健，君子以自强不息；地势坤，君子以厚德载物。";
SpannableStringBuilder ssb3 = new SpannableStringBuilder(desc3);
//图片
ImageSpan imageSpan3 = new ImageSpan(this, R.drawable.icon_cat_48);
//将最后字符用图片替换
ssb3.setSpan(imageSpan3, desc3.length() - 2, desc3.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
tv3.setText(ssb3);
// SpannableStringBuilder + ImageSpan 给文本添加图片
String desc4 = "天行健，君子以自强不息；地势坤，君子以厚德载";
SpannableStringBuilder ssb4 = new SpannableStringBuilder(desc4);
//图片
ImageSpan imageSpan4 = new ImageSpan(this, R.drawable.icon_cat_48);
//将最后字符用图片替换
ssb4.setSpan(imageSpan4, desc4.length() - 2, desc4.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
tv4.setText(ssb4);
addTagToTextView(tv5, "天行健，君子以自强不息。", "王蛋蛋的爸比");
addTagToTextView(tv6, "天行健，君子以自强不息；地势坤，君子以厚德载物。", "王蛋蛋的爸比");
}
private void addTagToTextView(TextView target, String title, String tag) {
if (TextUtils.isEmpty(title)) {
title = "";
}
String content = title + tag;
/**
* 创建TextView对象，设置drawable背景，设置字体样式，设置间距，设置文本等
* 这里我们为了给TextView设置margin，给其添加了一个父容器LinearLayout。不过他俩都只是new出来的，不会添加进任何布局
*/
LinearLayout layout = new LinearLayout(this);
TextView textView = new TextView(this);
textView.setText(tag);
textView.setBackground(getResources().getDrawable(R.drawable.room_member_role_bg));
textView.setTextSize(12);
textView.setTextColor(Color.parseColor("#FDA413"));
textView.setIncludeFontPadding(false);
textView.setPadding(ScreenUtils.dip2px(this, 6), 0,
ScreenUtils.dip2px(this, 6), 0);
textView.setHeight(ScreenUtils.dip2px(this, 17));
textView.setGravity(Gravity.CENTER_VERTICAL);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
// 设置左间距
layoutParams.leftMargin = ScreenUtils.dip2px(this, 6);
// 设置下间距，简单解决ImageSpan和文本竖直方向对齐的问题
layoutParams.bottomMargin = ScreenUtils.dip2px(this, 3);
layout.addView(textView, layoutParams);
/**
* 第二步，测量，绘制layout，生成对应的bitmap对象
*/
layout.setDrawingCacheEnabled(true);
layout.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
// 给上方设置的margin留出空间
layout.layout(0, 0, textView.getMeasuredWidth() + ScreenUtils.dip2px(this, (6 + 3)), textView.getMeasuredHeight());
// 获取bitmap对象
Bitmap bitmap = Bitmap.createBitmap(layout.getDrawingCache());
//千万别忘最后一步
layout.destroyDrawingCache();
/**
* 第三步，通过bitmap生成我们需要的ImageSpan对象
*/
ImageSpan imageSpan = new ImageSpan(this, bitmap);
/**
* 第四步将ImageSpan对象设置到SpannableStringBuilder的对应位置
*/
SpannableStringBuilder ssb = new SpannableStringBuilder(content);
//将尾部tag字符用ImageSpan替换
ssb.setSpan(imageSpan, title.length(), content.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
target.setText(ssb);
}
}