java编写的音乐播放器如何让进度条和音乐关联起来 点击进度条的指定位置 音乐就从指定位置开始播放

//变量：

private SeekBar seekbar;

private MediaPlayer player = null;

player = new MediaPlayer();//初始化

seekbarsetMax(playergetDuration());//设进度条显示

//音量：

audioManager=(AudioManager)getSystemService(AUDIO_SERVICE);

int MaxSound=audioManagergetStreamMaxVolume(AudioManagerSTREAM_MUSIC);

maxVolumeTextViewsetText(StringvalueOf(MaxSound));

SoundseekBarsetMax(MaxSound);

int currentSount=audioManagergetStreamVolume(AudioManagerSTREAM_MUSIC);

SoundseekBarsetProgress(currentSount);

SoundseekBarsetOnSeekBarChangeListener(new SeekBarListener());

ProceseekBar2setOnSeekBarChangeListener(new ProcessBarListener());

[Android UI界面]如何实现弧形的进度条或SeekBar？ 转载

public MusicSeekbar(Context context, AttributeSet attrs)

{

super(context, attrs);

mContext = context;

mPaintsetAntiAlias(true);

mPaintsetFilterBitmap(true);

mPaintsetStrokeWidth(4);

mPaintsetColor(getResources()getColor(Rcolormusic_seekbar));

mPaintsetStyle(StyleSTROKE);

mBitmapDot = BitmapFactorydecodeResource(getResources(),

Rdrawableui_music_dot);

// if(mThread==null)

// {

// mThread=new Thread(new myThread());

// mThreadstart();

// }

mPaintTextsetAntiAlias(true);

mPaintTextsetStyle(StyleSTROKE);

mPaintTextsetStrokeWidth(1);

// conn=new MediaPlayerServiceConnection(mContext);

// init();

}

protected void onDraw(Canvas canvas) {

mLeft = (float) (Centre_X - RADIUS

Mathcos((90 - mSeekBarTotalDegree / 2 + mDegree) / 180

MathPI));

mTop = (float) (Centre_Y - RADIUS

Mathsin((90 - mSeekBarTotalDegree / 2 + mDegree) / 180

MathPI));

Shader mLinearGradient = new LinearGradient(mLeft - 80, 100, mLeft,

100, new int[] {

getResources()getColor(Rcolormusic_seekbar),

getResources()getColor(Rcolormusic_seekbar1) },

null, ShaderTileModeCLAMP);

mPaintsetShader(mLinearGradient);

canvasdrawArc(mRect, mStartDegree, mDegree, false, mPaint);

canvasdrawBitmap(mBitmapDot, mLeft - 20, mTop - 20, new Paint());

canvassave();

canvasrotate(-22, Centre_X, Centre_Y);

mPaintTextsetColor(getResources()getColor(Rcolormusic_seekbar));

canvasdrawText(formatTime(mCurTime), 150, 0, mPaintText);

canvasrestore();

canvassave();

canvasrotate(20, Centre_X, Centre_Y);

mPaintTextsetColor(ColorWHITE);

canvasdrawText(formatTime(mDuration), 150, 0, mPaintText);

canvasrestore();

superonDraw(canvas);

}

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