项目演示(视频中会出现黑屏是手机录像输入密码时防止密码泄露而导致的，并不是程序问题)
video02
登录注册代码和页面在上一篇文章，地址为：http://t.csdnimg.cn/sgdba
在res目录下新建一个文件夹raw，然后自己将准备好的音频文件复制粘贴到raw文件夹下 activity_music.xml布局文件
实现代码MusciActivity.java 代码上都有注解解释代码，不懂的自行查阅
import android.media.MediaPlayer;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import java.io.IOException;
public class MusicActivity extends AppCompatActivity implements View.OnClickListener {
private static final int VOICE_RECOGNITION_REQUEST_CODE = 100;
private ImageView img;
private ImageView img_start;
private ImageView img_after;
private ImageView img_before;
private ImageView img_end;
private LinearLayout layout;
private RotateAnimation rotateAnimation = null;
private LinearInterpolator linearInterpolator = null;
private MediaPlayer player;
private TextView tv_alltime;
private TextView tv_starttime;
private android.widget.SeekBar seekbar;
private final int updata = 1;
private Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
setStatusColor(R.color.transparent);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_music);
initView();
try {
InitAndio();
} catch (IOException e) {
throw new RuntimeException(e);
}
seekbar.setProgress(0);
setMusicData();
ViewClick();
}
private void setMusicData() {
// 设置进度条的监听
seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
// 进度条改变时调用
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
if (!player.isPlaying()) {
player.seekTo(seekbar.getProgress());
tv_starttime.setText(new Vedio().JinDuTime(seekbar.getProgress() / 1000));
}
}
// 开始拉动进度条时调用
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
handler.removeMessages(updata);
//player.stop();
player.pause();
}
// 停止拉动进度条时调用
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
handler.sendEmptyMessage(updata);
player.start();
}
});
handler = new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(@NonNull Message message) {
switch (message.what) {
case updata: {
// 设置进度条的最大值
seekbar.setMax(player.getDuration());
// 设置当前进度条长度(即监听得到的时间)
seekbar.setProgress(player.getCurrentPosition());
// 设置当前音乐播放的位置
tv_starttime.setText(new Vedio().JinDuTime(player.getCurrentPosition() / 1000));
// 每隔1000毫秒刷新一次进度条的值
handler.sendEmptyMessageDelayed(updata, 1000);
}
}
return true;
}
});
}
/**
* 设置状态栏颜色
*/
public void setStatusColor(int color) {
if (Build.VERSION.SDK_INT >= 21) {
View view = MusicActivity.this.getWindow().getDecorView();
view.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
MusicActivity.this.getWindow().setStatusBarColor(MusicActivity.this.getResources().getColor(color));
}
}
/**
* 初始化控件
*/
public void initView() {
img_start = findViewById(R.id.img_start);
img_after = findViewById(R.id.img_after);
img_before = findViewById(R.id.img_before);
img_end = findViewById(R.id.img_end);
layout = findViewById(R.id.layout);
tv_alltime = findViewById(R.id.tv_alltime);
tv_starttime = findViewById(R.id.tv_starttime);
seekbar = findViewById(R.id.seekbar);
}
/**
* 控件点击事件
*/
public void ViewClick() {
img_start.setOnClickListener(this);
img_before.setOnClickListener(this);
img_after.setOnClickListener(this);
img_end.setOnClickListener(this);
}
/**
* 初始化音频数据
*/
public void InitAndio() throws IOException {
player = new MediaPlayer();
// 获取音频文件
player = MediaPlayer.create(getApplicationContext(), R.raw.music01);
// 获取音频的总时间
int time = player.getDuration() / 1000;
tv_alltime.setText(new Vedio().JinDuTime(time));
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.img_start) { // 开始播放按钮
// 点击开始播放按钮并隐藏，img_end显示
img_start.setVisibility(View.GONE);
img_end.setVisibility(View.VISIBLE);
// 开始音乐播放
player.start();
// 添加监听
handler.sendEmptyMessage(updata);
} else if (view.getId() == R.id.img_after) {
Toast.makeText(this, "下一曲", Toast.LENGTH_SHORT).show();
} else if (view.getId() == R.id.img_before) {
Toast.makeText(this, "上一曲", Toast.LENGTH_SHORT).show();
} else if (view.getId() == R.id.img_end) {
// 暂停音乐播放
player.pause();
// 点击暂停按钮并隐藏，img_start显示
img_end.setVisibility(View.GONE);
img_start.setVisibility(View.VISIBLE);
// 移除监听
handler.removeMessages(updata);
}
}
} 时间换算工具类 Video.java
import java.io.Serializable;
public class Vedio {
public String JinDuTime(int time){
int miao=time%60;
int fen=time/60;
int shi=time/60/60;
Serializable getfen = fen < 10 ? 0 + "" + fen : fen;
Serializable getmiao = miao < 10 ? 0 + "" + miao : miao;
return getfen+":"+getmiao;
}
}
至此简易音乐播放器就已完成了，更多功能待你扩展，代码只是提供参考，希望你能从中获取有用的技术价值