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<html >
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
<script async src="https://busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>
<link href="https://cdn.bootcdn.net/ajax/libs/vuetify/2.6.12/vuetify.min.css" rel="stylesheet">
<script src="https://cdn.bootcdn.net/ajax/libs/vuetify/2.0.4/vuetify.min.js"></script>
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<script src="https://cdn.jsdelivr.net/gh/highlightjs/[email protected]/build/highlight.min.js"></script>
<link href="https://cdn.bootcdn.net/ajax/libs/MaterialDesign-Webfont/6.9.96/css/materialdesignicons.min.css" rel="stylesheet">
<link href="/css/three-cards-style.css" rel="stylesheet">
<meta name="robots" contect= "all">
<meta name="description" contect="一个热爱学习的 Java 程序员,喜欢 Vue,喜欢深度学习">
<!-- 主页使用 category作为 keywords,文章页使用文章的 keywords -->
<meta name="keywords" contect="java,Android,音乐播放器,seekBar,滑动">
<link rel="icon shortcut" type="image/ico" href=/images/favicon.jpg>
<title>
U2647's blog
</title>
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<body>
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<v-card tile elevation="24" style="width: 80%; margin: 0 auto; text-align:center; background:rgba(0,0,0,0); margin-bottom: 3%;" gradient="to bottom, rgba(0,0,0,.1), rgba(0,0,0,.5)">
<v-img height="240" src="" class="white--text align-end" >
<v-card-title style="text-align: left; margin-left: 0.3%;">U2647's blog</v-card-title>
<v-card-text style="text-align: left;margin-left: 0.3%;" class="white--text">
一个热爱学习的 Java 程序员,喜欢 Vue,喜欢深度学习
</v-card-text>
<v-divider style="margin-left: 1.3%; margin-right: 1.3%;" class="success lighten-1"></v-divider>
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</v-icon>
时间轴
</v-btn>
<v-spacer></v-spacer>
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</v-icon>
文章总数
</v-btn >
<v-btn icon style="margin-right: 0.5%;margin-top:0.5%;margin-bottom: 0.5%;">
<v-avatar color="success" size="35" >
<span class="white--text"> 62 </span>
</v-avatar>
</v-btn>
</v-card-actions>
</v-card>
<div style="width: 55%; margin: 0 auto; text-align:center;">
<v-card tile max-width="100%" elevation="24" style="margin-bottom: 3%;" >
<v-img height="240" class="white--text align-end" src=/random/material-35.jpg gradient="to bottom, rgba(0,0,0,.1), rgba(0,0,0,.5)">
<v-card-title style="text-align: left;margin-left: 0.6%;">
<span>Android 音乐播放器-带seekBar滑动</span>
</v-card-title>
<v-card-text style="text-align: left;margin-left: 0.8%;">
Android 音乐播放器-带seekBar滑动
</v-card-text>
<v-divider class="success lighten-1" style="margin-left:2%; margin-right: 2%;"></v-divider>
<v-card-actions style="text-align: left;" class="white--text" style="margin-left:2%; margin-right: 2%;">
<v-btn text class="white--text" style="text-transform:capitalize;margin-left:0.5%;">Android</v-btn>
<v-btn text class="white--text" style="text-transform:capitalize;margin-left:0.5%;">音乐播放器</v-btn>
<v-btn text class="white--text" style="text-transform:capitalize;margin-left:0.5%;">seekBar</v-btn>
<v-btn text class="white--text" style="text-transform:capitalize;margin-left:0.5%;">滑动</v-btn>
<v-spacer></v-spacer>
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mdi-cursor-default-click-outline
</v-icon>
点击量
</v-btn >
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<span id = "busuanzi_value_page_pv" class="white--text"> 62 </span>
</v-avatar>
</v-btn>
</v-card-actions>
</v-img>
<v-card-text>
<div id = "post_container" class="text-justify" style="padding-left: 2%;padding-right: 2%;padding-bottom: 2%">
<h2 id="XML布局文件"><a href="#XML布局文件" class="headerlink" title="XML布局文件"></a>XML布局文件</h2><pre><code><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/play"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="播放"
/>
<Button android:id="@+id/pause"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="暂停"
/>
<SeekBar android:id="@+id/sb"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="100"
/>
</LinearLayout>
</code></pre>
<h2 id="JAVA代码"><a href="#JAVA代码" class="headerlink" title="JAVA代码"></a>JAVA代码</h2><pre><code>package com.pocketdigi;
import android.app.Activity;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class main extends Activity {
/** Called when the activity is first created. */
Button play,pause;
MediaPlayer mp;
SeekBar sb;
Handler handler=new Handler();
int Duration;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
play=(Button)findViewById(R.id.play);
pause=(Button)findViewById(R.id.pause);
sb=(SeekBar)findViewById(R.id.sb);
//找到相应View
mp =MediaPlayer.create(this,Uri.parse("/sdcard/徐若瑄-爱笑的眼睛.mp3"));
//后面的参数必须是URI形式的，所以要把相应路径转换成URI
play.setOnClickListener(playlis);
pause.setOnClickListener(pauselis);
sb.setOnSeekBarChangeListener(sbLis);
//监听器
Duration=mp.getDuration();
//音乐文件持续时间
sb.setMax(Duration);
//设置SeekBar最大值为音乐文件持续时间
}
private OnClickListener playlis=new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
handler.post(start);
//调用handler播放
}
};
Runnable start=new Runnable(){
@Override
public void run() {
// TODO Auto-generated method stub
mp.start();
handler.post(updatesb);
//用一个handler更新SeekBar
}
};
Runnable updatesb =new Runnable(){
@Override
public void run() {
// TODO Auto-generated method stub
sb.setProgress(mp.getCurrentPosition());
handler.postDelayed(updatesb, 1000);
//每秒钟更新一次
}
};
private OnClickListener pauselis=new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mp.pause();
//暂停
}
};
private OnSeekBarChangeListener sbLis=new OnSeekBarChangeListener(){
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
mp.seekTo(sb.getProgress());
//SeekBar确定位置后，跳到指定位置
}
};
}
</code></pre>
</div>
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版权声明：本博客所有文章除特别声明外，均采用 <a href="/creativecommons.html" target="_blank">CC BY-NC-SA 4.0 </a>许可协议。转载请注明出处！
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我的LeetCode
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new Vue({
el: '#app',
vuetify: new Vuetify(),
});
//加载代码高亮
hljs.highlightAll();
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