实现TextView内容分块处理

实现效果图：

这里实现主要是用HorizontalScrollView加TextView实现的，实现布局代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.a550211.testactivity.MainActivity">


    <Button
        android:id="@+id/btn_add"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="添加" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="sdcard>" />


            <HorizontalScrollView
                android:id="@+id/scrollView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:scrollbars="none">

                <TextView
                    android:id="@+id/tv_path"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    />
            </HorizontalScrollView>

    </LinearLayout>

</LinearLayout>

2、实现HorizontalScrollView初始跳转到最右边

 scrollView.post(new Runnable() {
            public void run() {
                scrollView.fullScroll(View.FOCUS_RIGHT);
            }
        });

3、完整实现代码

package com.example.a550211.testactivity;

import android.app.Activity;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextPaint;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.text.method.LinkMovementMethod;
import android.text.method.ScrollingMovementMethod;
import android.text.style.CharacterStyle;
import android.text.style.ClickableSpan;
import android.text.style.ImageSpan;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.HorizontalScrollView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.StringTokenizer;

public class MainActivity extends Activity {

    private TextView tv_path;
    private HorizontalScrollView scrollView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        initView();
        initData();

    }

    private void initData() {
//        String[] spPath = mCurrentPath.split(Type.ALL_PATH);
//        StringTokenizer tokenizer = new StringTokenizer(spPath[1],"/");
//        while (tokenizer.hasMoreTokens()){
//            sbBuilder.append(tokenizer.nextToken() + " > ");
//        }
        StringBuilder sbBuilder = new StringBuilder();
        for (int i = 0; i < 10; i++) {
            sbBuilder.append("username" + i + ">");
        }

        String likeUsers = sbBuilder.substring(0, sbBuilder.lastIndexOf(">")).toString();
        tv_path.setMovementMethod(LinkMovementMethod.getInstance());
        tv_path.setText(addClickablePart(likeUsers), TextView.BufferType.SPANNABLE);

    }

    private SpannableStringBuilder addClickablePart(String str) {

        SpannableString spanStr = new SpannableString("");
        SpannableStringBuilder ssb = new SpannableStringBuilder(spanStr);
        ssb.append(str) ;

        String[] likeUsers = str.split(">");

        if (likeUsers.length > 0) {
            // 最后一个
            for (int i = 0; i < likeUsers.length; i++) {
                final String name = likeUsers[i];
                final int start = str.indexOf(name) + spanStr.length();
                ssb.setSpan(new ClickableSpan() {
                    @Override
                    public void onClick(View widget) {
                        Toast.makeText(getApplication(), name, Toast.LENGTH_SHORT).show();

                    }
                    @Override
                    public void updateDrawState(TextPaint ds) {
                        super.updateDrawState(ds);
                         ds.setColor(Color.BLACK); // 设置文本颜色
                        // 去掉下划线
                        ds.setUnderlineText(false);
                    }

                    @Override
                    public CharacterStyle getUnderlying() {
                        return super.getUnderlying();
                    }
                }, start, start + name.length(), 0);
            }
        }
        return ssb.append("");
    }

    private void initView() {
        tv_path = (TextView)findViewById(R.id.tv_path);
        scrollView = (HorizontalScrollView)findViewById(R.id.scrollView);
        scrollView.post(new Runnable() {
            public void run() {
                scrollView.fullScroll(View.FOCUS_RIGHT);
            }
        });

    }
}