实现效果如图：

通过继承自FlexboxLayout实现，Java代码：

package org.test;

import android.content.Context;

import android.graphics.Color;

import android.graphics.drawable.GradientDrawable;

import android.util.AttributeSet;

import android.widget.LinearLayout;

import android.widget.TextView;

import androidx.annotation.NonNull;

import androidx.annotation.Nullable;

import com.google.android.flexbox.FlexDirection;

import com.google.android.flexbox.FlexWrap;

import com.google.android.flexbox.FlexboxLayout;

import com.google.android.flexbox.JustifyContent;

import java.util.ArrayList;

import java.util.List;

public class TagGroup extends FlexboxLayout {

private List mTexts;

private List mColors;

private Context mContext;

private int TAG_VIEW_COUNT = 0;

public TagGroup(Context context, AttributeSet attrs) {

super(context, attrs);

mContext = context;

init();

}

private void init() {

mTexts = new ArrayList<>();

mColors = new ArrayList<>();

this.setFlexDirection(FlexDirection.ROW);

this.setJustifyContent(JustifyContent.FLEX_START);

this.setFlexWrap(FlexWrap.WRAP);

}

public void setTagView(@NonNull List texts, @Nullable List colors) {

if (texts == null || texts.size() == 0) {

throw new RuntimeException("tag view文本字段不能为空");

}

this.mTexts = texts;

TAG_VIEW_COUNT = texts.size();

if (colors == null || colors.size() == 0) {

for (int i = 0; i < TAG_VIEW_COUNT; i++) {

mColors.clear();

mColors.add(Color.WHITE);

}

} else {

this.mColors = colors;

}

this.removeAllViews();

for (int i = 0; i < TAG_VIEW_COUNT; i++) {

TextView textView = makeTextView(mTexts.get(i), mColors.get(i));

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

//设置每一个子View在整体布局中与其他子View的上下左右的margin

layoutParams.setMargins(0, 1, 5, 1);

this.addView(textView, layoutParams);

}

this.invalidate();

}

//绘制圆角描边的TextView

private TextView makeTextView(String s, Integer c) {

TextView textView = new TextView(mContext);

textView.setText(s);

textView.setPadding(10, 5, 10, 5);

int strokeWidth = 5; // 5px

int roundRadius = 15; // 15px

int strokeColor = Color.GRAY;

int fillColor = c;

GradientDrawable gd = new GradientDrawable();

gd.setColor(fillColor);

gd.setCornerRadius(roundRadius);

gd.setStroke(strokeWidth, strokeColor);

textView.setBackground(gd);

return textView;

}

}

使用方式，把TagGroup当作一个普通布局使用，写入xml布局：

android:id="@+id/tag_group"

android:layout_width="match_parent"

android:layout_height="wrap_content" />

然后在上层，通过set方式，添加子tag标签实现：

TagGroup tagGroup = findViewById(R.id.tag_group);

List texts = Arrays.asList("zhang", "phil", "csdn", "android", "zhang", "phil", "csdn", "android", "zhang", "phil", "csdn", "android");

List colors = Arrays.asList(Color.RED, Color.DKGRAY, Color.BLUE, Color.RED, Color.DKGRAY, Color.BLUE, Color.RED, Color.DKGRAY, Color.BLUE, Color.RED, Color.DKGRAY, Color.BLUE);

tagGroup.setTagView(texts, colors);