HarmonyOS 读取文件 随机更换段子
base/profile下存放一个joke.txt文件
里面又三个笑话并且用---分割
“大爷，我现场采访您一下，您这样晨跑锻炼坚持几年了？”“姑娘别挡道！我尿急！ ”“请问你是做什么工作的？”---“哦。我的工作是杀僵尸。”“嗯？可是这个世界上没有僵尸啊！ ”“你以为它们是怎么没有的？”---中午去买菜，感觉都不太新鲜了。老板：早上刚到的，都新鲜的。我：这菜看着就蔫蔫的啊？！老板：从早上到现在，它以为没人要自己了，这不垂头丧气么！我。。。布局
ohos:multiple_lines="true" 允许换行
代码
package com.example.helloworld.slice;import com.example.helloworld.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;import ohos.agp.components.Button;import ohos.agp.components.Component;import ohos.agp.components.Text;import ohos.global.resource.NotExistException;import ohos.global.resource.Resource;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.util.Random;public class JokeAbilitySlice extends AbilitySlice { @Override public void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_ability_joke); Text text = findComponentById(ResourceTable.Id_joke); Button btnReadRandom = findComponentById(ResourceTable.Id_btnReadRandom); StringBuilder sb = new StringBuilder(); try { //返回文件的字节流 Resource resource = this.getResourceManager().getResource(ResourceTable.Profile_joke); //字节流 BufferedReader br = new BufferedReader(new InputStreamReader(resource)); String line; while ((line = br.readLine()) != null) { sb.append(line); } br.close(); } catch (IOException e) { e.printStackTrace(); } catch (NotExistException e) { e.printStackTrace(); } btnReadRandom.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) { String[] jocks = sb.toString().split("---"); Random random = new Random(); int index = random.nextInt(jocks.length); text.setText(jocks[index]); } }); } @Override public void onActive() { super.onActive(); } @Override public void onForeground(Intent intent) { super.onForeground(intent); }}