Android第三次作业

Android第三次作业

页面截图：

（播放暂停功能为一个按键）

代码：

player为MediaPlayer对象

播放功能：

public void play(){
player.reset();
try{
player.setDataSource(musics.get(binder.getCurMusicIndex()));
player.prepare();
player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mediaPlayer) {
player.start();
}
});
player.seekTo(binder.getPausePosition());
binder.setTotalMusicTime(player.getDuration());
}catch (IOException e){
e.printStackTrace();
}
}

暂停：

public void pause(){
if (player.isPlaying()){
player.pause();
binder.setPause(true);
binder.setPausePosition(player.getCurrentPosition());
}
}

停止：

public void stop(){
if (player!=null){
player.pause();
player.stop();
binder.setPause(false);
}
binder.setPausePosition(0);
binder.setCurMusicIndex(0);
binder.setPlayPosition(0);
}

上一首：

public void pre(){
int curMusicIndex = binder.getCurMusicIndex();
curMusicIndex-=1;
if (curMusicIndex<0) {
binder.setCurMusicIndex(musics.size() - 1);
binder.setPausePosition(0);
play();
}else{
binder.setCurMusicIndex(curMusicIndex);
binder.setPausePosition(0);
play();
}
}

下一首：

public void next(){
int curMusicIndex = binder.getCurMusicIndex();
curMusicIndex+=1;
if (curMusicIndex >=musics.size()){
binder.setCurMusicIndex(0);
binder.setPausePosition(0);
play();
}
else{
binder.setCurMusicIndex(curMusicIndex);
binder.setPausePosition(0);
play();
}
}

播放列表的获得：

private void initListView() {
musics = binder.getMusics();
simpleMusics = binder.getSimpleMusics();
adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, simpleMusics);
musicLv.setAdapter(adapter);
}

Coding：

项目：
https://git.coding.net/midnightclad/Android3.git

APK：
https://coding.net/u/midnightclad/p/Android3/git/blob/master/1600802115JXS.apk

录制：