Question

各位前辈。
最近学习做简单的应用。
想知道如何在网上阅读音乐。
如何增加搜索栏显示进度？
然后增加当前播放时间和总时间的显示。

我的代码：

import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;

import static tw.edu.ctust.f10308023.mismediaplayer.R.id.btnBackward;
import static tw.edu.ctust.f10308023.mismediaplayer.R.id.btnPlay;

public class Player_one extends AppCompatActivity {
    private ImageButton ib1, ib2, ib3;
    ImageView iv;
    private MediaPlayer mediaPlayer;
    private Handler myHandler = new Handler();
    private int forwardTime = 5000;
    private int backwardTime = 5000;
    private double startTime = 0;
    private double finalTime = 0;
    private TextView tx1, tx2, tx3;

    private int seekForwardTime = 5000; // 5000 milliseconds
    private int seekBackwardTime = 5000; // 5000 milliseconds

    String AudioURL = "http://k003.kiwi6.com/hotlink/hyzvh0ugcl/cytussaika.mp3";

    MediaPlayer mediaplayer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player_one);

        iv = (ImageView) findViewById(R.id.imageView);
        ib1 = (ImageButton) findViewById(btnPlay);//播放
        ib2 = (ImageButton) findViewById(btnBackward);//倒轉
        ib3 = (ImageButton) findViewById(R.id.btnForward);//快轉
        tx1 = (TextView) findViewById(R.id.songCurrentDurationLabel);
        tx2 = (TextView) findViewById(R.id.songTotalDurationLabel);
        tx3 = (TextView) findViewById(R.id.songTitle);
        tx3.setText("Cytus-saika");
        View v = findViewById(R.id.player_footer_bg);
        v.getBackground().setAlpha(75);//0~255透明度值

        mediaplayer = new MediaPlayer();
        mediaplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);


        ib1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated catch block

                if (mediaplayer.isPlaying()) {
                    mediaplayer.pause();
                    ib1.setImageResource(R.drawable.play);
                } else {
                    mediaplayer.start();
                    ib1.setImageResource(R.drawable.pause);
                }

                try {

                    mediaplayer.setDataSource(AudioURL);
                    mediaplayer.prepare();

                } catch (IllegalArgumentException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (SecurityException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IllegalStateException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

        });
                ib2.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // get current song position
                int currentPosition =mediaplayer.getCurrentPosition();
                // check if seekBackward time is greater than 0 sec
                if(currentPosition - seekBackwardTime >= 0){
                    // forward song
                    mediaplayer.seekTo(currentPosition - seekBackwardTime);
                }else{
                    // backward to starting position
                    mediaplayer.seekTo(0);
                }

            }
        });
                ib3.setOnClickListener(new View.OnClickListener()

            {
                @Override
                public void onClick (View arg0){
                // get current song position
                int currentPosition = mediaplayer.getCurrentPosition();
                // check if seekForward time is lesser than song duration
                if (currentPosition + seekForwardTime <= mediaplayer.getDuration()) {
                    // forward song
                    mediaplayer.seekTo(currentPosition + seekForwardTime);
                } else {
                    // forward to end position
                    mediaplayer.seekTo(mediaplayer.getDuration());
                    Toast.makeText(getApplicationContext(), "無法快轉", Toast.LENGTH_SHORT).show();
                }
            }

        });

    }
}

Answer 1

我建议你看一下this link。这是一个非常详细的教程，介绍如何更新搜索栏并相应地保留时间。

虽然它是从本地播放音频，但您始终可以将音频文件的网址传递给 MusicPlayer 类。

希望这适合你！

增加搜索栏音乐播放显示时间更新

1 个答案: