package com.gyarmy.musicplay;



import java.io.IOException;



import android.media.MediaPlayer;

import android.media.MediaPlayer.OnErrorListener;

import android.os.Bundle;

import android.app.Activity;

import android.text.TextUtils;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.Toast;



public class MainActivity extends Activity implements OnSeekBarChangeListener {

	

	private EditText ed_path;

	private SeekBar ed_bar;

	private Button bt_pause;

	MediaPlayer mp;

	private boolean isOnProcess=false;

	

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		

		ed_path = (EditText) findViewById(R.id.mus_addr);

		ed_bar = (SeekBar) findViewById(R.id.mus_progress);

		bt_pause = (Button)findViewById(R.id.mus_pause);

		

		ed_bar.setOnSeekBarChangeListener(this);

		

	}



	public void play(View v){

		String path= ed_path.getText().toString().trim();

		if(TextUtils.isEmpty(path)){

			Toast.makeText(this, "请输入文件的路径", 0).show();

			return;

		}

		

		if(mp==null){

			mp = new MediaPlayer();

		}

		

		mp.setOnErrorListener(new OnErrorListener() {

			

			@Override

			public boolean onError(MediaPlayer mp, int what, int extra) {

				// TODO Auto-generated method stub

				Toast.makeText(MainActivity.this, "文件不是歌曲,不能播放", 0).show();

				return false;

			}

		});

		mp.reset();

		

		try {

			mp.setDataSource(path);

			mp.prepare();

			

			//播放

			mp.start();

			newProgress();

			

		} catch (IllegalArgumentException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (Exception e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

		

	}

	

	public void newProgress(){

		new Thread(

				new Runnable() {

					

					@Override

					public void run() {

						// TODO Auto-generated method stub

						if(mp!=null){

							int duration = mp.getDuration();

							ed_bar.setMax(duration);

							

							while(mp.isPlaying()){

								int curPos = mp.getCurrentPosition();

								if(isOnProcess==false){

									ed_bar.setProgress(curPos);

								}

							}

							

						}

						

						

					}

				}

				).start();

	}

	

	public void pause(View v){

		if(mp!=null)

		{

			if(bt_pause.getText().equals("暂停" ) &&  mp.isPlaying()){

				mp.pause();

				bt_pause.setText("继续");

			}else if(bt_pause.getText().equals("继续")){

				mp.start();

				newProgress();

				bt_pause.setText("暂停");

			}

		}

		

	}

	

	public void stop(View v){

		if(mp!=null)

		{

			mp.stop();

			bt_pause.setText("暂停");

			//释放资源

			mp.release();

			mp=null;

		}

		

	}



	@Override

	public void onProgressChanged(SeekBar seekBar, int progress,

			boolean fromUser) {

		// TODO Auto-generated method stub

		

		//设置歌曲的位置

		isOnProcess = true;

	}



	@Override

	public void onStartTrackingTouch(SeekBar seekBar) {

		// TODO Auto-generated method stub

		

	}



	@Override

	public void onStopTrackingTouch(SeekBar seekBar) {

		// TODO Auto-generated method stub

		

		if(mp!=null){

			

				mp.seekTo(seekBar.getProgress());

				isOnProcess=false;

			

		}

	}

	

}