Question

我在列表视图中有json的歌曲，每行都有一个播放按钮，点击播放按钮我的应用程序冻结，应用程序没有响应对话框来了，有时媒体播放器在冻结后有时会崩溃。因为App无响应。这是我的代码：

  viewHolder.playButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                    selectedPosition = position;

                    if (selectedPosition != mPlayingPosition) {

                        try {
                            mPlayerforplanet.reset();
                            mPlayerforplanet.setAudioStreamType(AudioManager.STREAM_MUSIC);
                            mPlayerforplanet.setDataSource(song_urls);

                            logger.addRecordToLog("MediaPlayer audio session ID: " + mPlayerforplanet.getAudioSessionId());
                            logger.addRecordToLog("Media Player started " + "Started !");
                            mPlayerforplanet.prepare();
                            mPlayerforplanet.start();

                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                        //  playSongs(position);(i also try with method of playsong but no luck)

                        Toast.makeText(getContext(), "play song" + mPlayingPosition, Toast.LENGTH_SHORT).show();

            }}});

点击播放按钮后记录猫

01-10 07:13:33.501 17284-17293/luck.materialdesign.tabsnavigator I/art: Thread[5,tid=17293,WaitingInMainSignalCatcherLoop,Thread*=0xab8d8600,peer=0x12c000a0,"Signal Catcher"]: reacting to signal 3
01-10 07:13:34.273 17284-17293/luck.materialdesign.tabsnavigator I/art: Wrote stack traces to '/data/anr/traces.txt'

Answer 1

请使用prepareAsync而不是准备和处理onPrepared并从那里触发启动。

 mPlayerforplanet.prepareAsync();
 public void onPrepared(MediaPlayer mp) {
  mPlayerforplanet.start;
}

示例代码：

package com.example.simplemediaplayer.app;

import android.media.AudioManager;
import android.media.MediaPlayer;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import java.io.IOException;


public class MediaPlayerActivity extends ActionBarActivity {

    private static final String TAG = "tag";

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

        String url = "http://www.brothershouse.narod.ru/music/pepe_link_-_guitar_vibe_113_club_mix.mp3"; // your URL here
        MediaPlayer myMediaPlayer = new MediaPlayer();
        myMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        try {
            myMediaPlayer.setDataSource(url);
            myMediaPlayer.prepareAsync(); // might take long! (for buffering, etc)

        } catch (IOException e) {
            Toast.makeText(this, "mp3 not found", Toast.LENGTH_SHORT).show();
            e.printStackTrace();
        }

        //mp3 will be started after completion of preparing...
        myMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

            @Override
            public void onPrepared(MediaPlayer player) {
                player.start();
            }

        });

    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.media_player, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

对于搜索栏使用重新运行：

启动runnable，

 public void onPrepared(MediaPlayer player) {
            mPlayerforplanet.start();
            mUpdateSeekBar.run();
        }

可运行的代码

private final Runnable mUpdateSeekBar = new Runnable() {
        @Override
        public void run() {
                   int elapsedtime = mPlayerforplanet.getCurrentPosition();
                  /* update UI with getCurrentPosition*/
                mHandler.postDelayed(mUpdateSeekBar, 1000);
        }
    };

从网址播放媒体时应用无响应

1 个答案: