首先声明权限，第一个用于录音和播放，第二个用于手机文件系统读写，第三个可以用来访问网络上的媒体文件
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
布局控件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Document tittle.pdf" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="@dimen/dp45"
android:gravity="center"
android:orientation="horizontal">
<View
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
<ImageButton
android:id="@+id/play_stop"
android:layout_width="30dp"
android:layout_height="60dp"
android:background="@null"
android:src="@mipmap/play" />
<SeekBar
android:id="@+id/seekbar"
android:layout_width="300dp"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/music_cur"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="00:12" />
<View
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<View style="@style/common_divider_task" />
</LinearLayout>样子如下
封装java代码，主要注意几点
- 首先传入的构造参数为该播放界面，播放地址(可以为本地地址，也可以是网络存放地址)，和存放播放小空间的activity
- timer用于更新seek的进度和显示
- 注意mediaplayer的初始化操作， mediaPlayer.setDataSource(mp3Path);//指定音频文件的路径
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.prepareAsync();//让mediaplayer进入准备状态
package com.ltt.overseas.main.tab.fragment.activity;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.provider.MediaStore;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import com.ltt.overseas.R;
import com.ltt.overseas.http.CustomerCallBack;
import com.ltt.overseas.model.ExploreResponseDataBean;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
/**
* Created by Administrator on 2018/6/24 0024.
*/
public class AudioImageActivity {
private ImageView mSoundIamge;
private SeekBar seekBar;
private TextView musicCur;
private String mMp3Path = "";//录音存放位置
private View mView = null;
private Activity mParentActivity;
private SimpleDateFormat format=null;
private Timer timer;
private MediaPlayer mediaPlayer;
public AudioImageActivity(View view, String mp3Path, Activity activity) {
format = new SimpleDateFormat("mm:ss");
mView = view;
mMp3Path = mp3Path;
mParentActivity=activity;
initUI();
}
private void initUI() {
mSoundIamge = mView.findViewById(R.id.play_stop);
seekBar = mView.findViewById(R.id.seekbar);
musicCur = mView.findViewById(R.id.music_cur);
mSoundIamge.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
clickPlayVoice(mMp3Path);
}
});
}
protected void finalize() {
if (timer != null){
timer.cancel();
timer=null;
}
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer=null;;
}
}
//由Uri转成路径的方法
public static String getRealFilePath(final Context context, final Uri uri) {
if (null == uri) return null;
final String scheme = uri.getScheme();
String data = null;
if (scheme == null)
data = uri.getPath();
else if (ContentResolver.SCHEME_FILE.equals(scheme)) {
data = uri.getPath();
} else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {
Cursor cursor = context.getContentResolver().query(uri, new String[]{MediaStore.Images.ImageColumns.DATA}, null, null, null);
if (null != cursor) {
if (cursor.moveToFirst()) {
int index = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
if (index > -1) {
data = cursor.getString(index);
}
}
cursor.close();
}
}
return data;
}
//点击语音播放按钮
private void clickPlayVoice(String mp3Path) {
if (mp3Path.isEmpty())
return;
mediaPlayer = new MediaPlayer();
timer = new Timer();
try {
mediaPlayer.setDataSource(mp3Path);//指定音频文件的路径
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.prepareAsync();//让mediaplayer进入准备状态
} catch (IOException e) {
e.printStackTrace();
if (timer != null){
timer.cancel();
timer=null;
}
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer=null;;
}
}
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
// 在播放完毕被回调
mSoundIamge.setImageResource(R.mipmap.play);
if (timer != null){
timer.cancel();
timer=null;
}
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer=null;;
}
}
});
mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
;
if (timer != null){
timer.cancel();
timer=null;
}
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer=null;;
}
return true;
}
});
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(final MediaPlayer mp) {
seekBar.setMax(mp.getDuration());
musicCur.setText("00:00");
mSoundIamge.setImageResource(R.mipmap.stop);
mp.start();//开始播放
mp.seekTo(0);
//监听播放时回调函数
timer.schedule(new TimerTask() {
Runnable updateUI = new Runnable() {
@Override
public void run() {
if (mp == null)
return;
musicCur.setText(format.format(mp.getCurrentPosition()) + "");
}
};
@Override
public void run() {
if (mp == null)
return;
seekBar.setProgress(mp.getCurrentPosition());
mParentActivity.runOnUiThread(updateUI);
}
}, 0, 50);
}
});
}
private String getFileName(String pathandname) {
int start = pathandname.lastIndexOf("/");
int end = pathandname.lastIndexOf(".");
if (start != -1 && end != -1) {
return pathandname.substring(start + 1, end);
} else {
return null;
}
}
}