进入触发oncreate-> onStart->onResume
退出触发 onPause->onStop->onDestroy
总结
实现音乐列表,点击进入详情页面播放对应音乐
private void Viewinit() {
context = this.getActivity();
myadapter = new musicAdapter(context);
//设置LayoutManager
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setHasFixedSize(true);
recyclerView.setAdapter(myadapter);
myadapter.list(namelist,artistlist,urllist,coverlist);
}
musicadapter定义成员函数获取歌名,歌手,MP3链接,封面链接
private List<String> namelist;
private List<String> artistlist;
private List<String> urllist;
private List<String> coverlist;
public musicAdapter(Context context) {
this.context = context;
}
public void list(List<String> namelist,List<String> artistlist,List<String> urllist,List<String> coverlist) {
this.namelist= namelist;
this.artistlist= artistlist;
this.urllist= urllist;
this.coverlist= coverlist;
notifyDataSetChanged();
}
歌单json文件,包含 "name","artist","url","cover","lrc"
["url","cover","lrc"]都是网络地址,拼接到https://cdn.unrun.top/blog/music/
后面获取url
output.json
放在raw文件夹下json格式如下
{"data":[{
"name": "花の塔",
"artist": "酸欠少女さユり",
"url": "45.mp3",
"cover": "45.jpg",
"lrc": "45.lrc"
},
{
"name": "星と君が消えた日",
"artist": "泠鸢yousa",
"url": "59.mp3",
"cover": "59.jpg",
"lrc": "59.lrc"
}]}
定义一个函数解析歌单json文件,先逐行读取为字符串然后解析
private void getjson(){
InputStream stream=getResources().openRawResource(R.raw.output);
BufferedReader reader=new BufferedReader(new InputStreamReader(stream));
String jsonStr="",line="";
try {
while ((line=reader.readLine())!=null){
jsonStr+=line;
}
} catch (IOException e) {
e.printStackTrace();
}
try {
JSONObject jsonObject1 = new JSONObject(jsonStr);
JSONArray jsonArray = jsonObject1.getJSONArray("data");
for(int i=0;i<jsonArray.length();i++){
JSONObject jsonObject = jsonArray.getJSONObject(i);
String name = jsonObject.getString("name");
String artist = jsonObject.getString("artist");
String url = jsonObject.getString("url");
String cover = jsonObject.getString("cover");
String lrc = jsonObject.getString("lrc");
namelist.add(name);
artistlist.add(artist);
urllist.add(url);
coverlist.add(cover);
// lrclist.add(lrc);
// Log.d("f4", String.valueOf(list));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
实例化musicadapter,并把歌曲信息传进去
private void Viewinit() {
context = this.getActivity();
myadapter = new musicAdapter(context);
//设置LayoutManager
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setHasFixedSize(true);
recyclerView.setAdapter(myadapter);
myadapter.list(namelist,artistlist,urllist,coverlist);
}
musicadapter中list函数获取,(上面写了)
public void list(List<String> namelist... ){}
unbindService(connection);
}
});
server文件中
继承Binder的自定义类,其函数myplay()
写播放方法
class Mybinder extends Binder{
public void myplay(){
mediaPlayer=MediaPlayer.create(getApplicationContext(),R.raw.flower);
mediaPlayer.start();
}
}
点击绑定开始播放歌曲,点击解绑暂停歌曲
完整音乐列表功能