Android节拍器&定时程序

package com.Android.Jiapaiqi; import android.app.Activity; import android.content.Context; import android.media.AudioManager; import android.media.SoundPool; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.SeekBar; import android.widget.TextView; import android.widget.SeekBar.OnSeekBarChangeListener; import java.util.Timer; import java.util.TimerTask; public class ActivityMain extends Activity { Button button_start; Button button_stop; EditText edit_sudu; EditText edit_paishu; TextView result; SeekBar seekbar; public float tempo; public int section; public int pp; Handler handler; Timer mytimer; private SoundPool sndHigh; private SoundPool sndLow; private int hitOfHigh; private int hitOfLow; //声音控制 private AudioManager audioManager; //声音变量 private int volume=0; //声音模式 //private int mode; //是否有声音 private int flag=1; //内部类 class MyTimerTask extends TimerTask{ @Override public void run() { Message message=new Message(); message.what=1; handler.sendMessage(message); } }; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); pp=1; setContentView(R.layout.main); final EditText edit_sudu = (EditText)this.findViewById(R.id.edit_sudu); final EditText edit_paishu = (EditText)this.findViewById(R.id.edit_paishu); final TextView result = (TextView)findViewById(R.id.result); handler = new Handler() { public void handleMessage(Message msg) { switch(msg.what) { case 1: result.setText(String.valueOf(pp)); if(pp==1) // play (int soundID, float leftVolume, float rightVolume, int priority, int loop, float rate) //播放音频，可以对左右音量分别设置，还可以设置优先级，循环次数以及速率 sndHigh.play(hitOfHigh, 1, 1, 0, 0, 1); else sndLow.play(hitOfLow, 1, 1, 0, 0, 1); if(pp!=section) { pp++; } else { pp=1; } break; } super.handleMessage(msg); } }; button_start = (Button) findViewById(R.id.button_start); button_start.setOnClickListener(new OnClickListener() { public void onClick(View v) { tempo=Float.parseFloat(edit_sudu.getText().toString()); section=Integer.parseInt(edit_paishu.getText().toString()); mytimer=new Timer(); float tempFloat=60/tempo*1000; mytimer.schedule(new MyTimerTask(),0, (long)tempFloat); } }); button_stop = (Button) findViewById(R.id.button_stop); button_stop.setOnClickListener(new OnClickListener() { public void onClick(View v) { mytimer.cancel(); sndHigh.pause(hitOfHigh); sndLow.pause(hitOfLow); } }); final SeekBar seekbar = (SeekBar) findViewById(R.id.seekbar); //设置拖动条的初始值和文本框的初始值 seekbar.setMax(7); seekbar.setProgress(5); seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // TODO Auto-generated method stub } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } }); audioManager = (AudioManager) getBaseContext().getSystemService(Context.AUDIO_SERVICE); //通过getStreamVolume获得当前音量大小 volume=audioManager.getStreamVolume(AudioManager.STREAM_RING); //把当前音量的值 设置给进度条 //seekbar.setProgress(volume); sndHigh = new SoundPool(10, AudioManager.STREAM_SYSTEM,5); //载入音频流 hitOfHigh = sndHigh.load(getBaseContext(), R.drawable.high, 0); sndLow = new SoundPool(10, AudioManager.STREAM_SYSTEM,5); //载入音频流 hitOfLow = sndLow.load(getBaseContext(), R.drawable.low, 0); } }