activity与service之间交互并播放歌曲，为了方便，我把要播放的歌曲定死了，大家可以灵活改进
mservice：
复制代码 代码如下:
package com.tiantian.test;
import android.app.service;
import android.content.intent;
import android.media.mediaplayer;
import android.os.binder;
import android.os.environment;
import android.os.ibinder;
import android.util.log;
public class mservice extends service{
mybinder mybinder = new mybinder();
private mediaplayer mediaplayer;
public class mybinder extends binder{
mservice getservice(){
return mservice.this;
}
}
@override
public ibinder onbind(intent intent) {
// todo auto-generated method stub
log.v("cat", "onbind");
return mybinder;
}
@override
public void oncreate() {
// todo auto-generated method stub
super.oncreate();
log.v("cat", "oncreate");
try {
mediaplayer = new mediaplayer();
mediaplayer.setdatasource(environment.getexternalstoragedirectory() + "/mp3/trhxn.mp3");
mediaplayer.prepare();
} catch (exception e) {
// todo auto-generated catch block
log.v("cat", "fail");
e.printstacktrace();
}
}
@override
public void ondestroy() {
// todo auto-generated method stub
super.ondestroy();
log.v("cat", "ondestroy");
}
@override
public int onstartcommand(intent intent, int flags, int startid) {
// todo auto-generated method stub
log.v("cat", "onstartcommand");
return super.onstartcommand(intent, flags, startid);
}
@override
public boolean onunbind(intent intent) {
// todo auto-generated method stub
log.v("cat", "onunbind");
return false;
}
public void start(){
mediaplayer.start();
}
public void pause(){
mediaplayer.pause();
}
public void stop(){
mediaplayer.stop();
mediaplayer.release();
}
public int getduration(){
return mediaplayer.getduration();
}
public int getcurrentposition(){
return mediaplayer.getcurrentposition();
}
public void seekto(int position){
mediaplayer.seekto(position);
}
}
musicplayactivity：
复制代码 代码如下:
package com.tiantian.test;
import android.app.activity;
import android.content.componentname;
import android.content.intent;
import android.content.serviceconnection;
import android.os.bundle;
import android.os.handler;
import android.os.ibinder;
import android.util.log;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.button;
import android.widget.seekbar;
public class musicplayactivity extends activity {
/** called when the activity is first created. */
mservice mservice;
private serviceconnection conn = new serviceconnection(){
@override
public void onserviceconnected(componentname arg0, ibinder arg1) {
// todo auto-generated method stub
mservice = ((mservice.mybinder)arg1).getservice();
log.v("cat", "getserviced");
}
@override
public void onservicedisconnected(componentname name) {
// todo auto-generated method stub
mservice = null;
}
};
private seekbar seekbar;
private button playbt;
private boolean isplaying = false;
private boolean isbinded = false;
private handler mhandler;
@override
public void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.main);
intent intent = new intent(musicplayactivity.this, mservice.class);
if(!isbinded){
bindservice(intent, conn, bind_auto_create);
isbinded = true;
}
seekbar = (seekbar) findviewbyid(r.id.seekbar);
playbt = (button) findviewbyid(r.id.startbt);
mhandler = new handler();
seekbar.setonseekbarchangelistener(new seekbar.onseekbarchangelistener() {
@override
public void onstoptrackingtouch(seekbar seekbar) {}
@override
public void onstarttrackingtouch(seekbar seekbar) {}
@override
public void onprogresschanged(seekbar seekbar, int progress,
boolean fromuser) {
if(fromuser){
mservice.seekto((progress*mservice.getduration())/100);
}
}
});
playbt.setonclicklistener(new onclicklistener() {
@override
public void onclick(view v) {
// todo auto-generated method stub
if(!isplaying){
mservice.start();
isplaying = true;
playbt.settext("暂停");
mhandler.post(seekbarthread);
}else{
mservice.pause();
isplaying = false;
playbt.settext("播放");
mhandler.removecallbacks(seekbarthread);
}
}
});
}
runnable seekbarthread = new runnable() {
@override
public void run() {
// todo auto-generated method stub
seekbar.setprogress((mservice.getcurrentposition()*100)/mservice.getduration());
mhandler.postdelayed(seekbarthread, 200);
}
};
}