＜android＞音乐频谱显示效果 音乐播放动画 自定义view Visualizer 对接MediaPlayer 声音频率 动画效果

  最近写了一个音乐频谱显示效果的自定义view，通过Visualizer 函数对接了MediaPlayer的声源byte数据的回调，全部封装到了view的里面，外部只需要设置一个MediaPlayer即可，API-> setMediaPlayer() 外层设置路径 播放之后 自动显示频谱效果，目前只做了下图一种效果，以后还会更新其它的效果。如果有赶工期或者正好碰到类似效果需求的同伴们可以直接改改来用，见下图：

然后直接上完整代码：
 

/**
 * author by LiuGuo
 * on 2021/4/13
 * 自定义组件：音乐频谱显示组件
 * API-> setMediaPlayer()  外层设置路径 播放之后 自动显示频谱效果
 */
public class MusicFrequencyView extends View {
    private int widthsize;
    private int heightsize;
    private Paint paint;
    int count = -1;
    float mCount = 0;
    int count1 = -1;
    float mCount1 = 0;
    int count2 = -1;
    float mCount2 = 0;
    int count3 = -1;
    float mCount3 = 0;
    int count4 = -1;
    float mCount4 = 0;
    int count5 = -1;
    float mCount5 = 0;
    boolean isUp = false;
    boolean isUp1 = false;
    boolean isUp2 = false;
    boolean isUp3 = false;
    boolean isUp4 = false;
    boolean isUp5 = false;
    int[] voiceData = new int[6];
    private Visualizer visualizer;
    private int currentFrequency;
    private int mCurrentFrequency;
    private int currentVolume;
    private final int itemColor;
    private Paint paint1;
    private float mi;

    public MusicFrequencyView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.musicView);
        itemColor = ta.getColor(R.styleable.musicView_itemColor, Color.parseColor("#000000"));
    }


    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        widthsize = MeasureSpec.getSize(widthMeasureSpec);
        heightsize = MeasureSpec.getSize(heightMeasureSpec);
        setMeasuredDimension(widthsize, heightsize);
        init();
    }


    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        Log.e("onDrawonDraw", "" + heightsize + "==" + widthsize);
        Log.e("mCountmCount", "" + count);

        if (count <= 0) count = 0;
        if (count1 <= 0) count1 = 0;
        if (count2 <= 0) count2 = 0;
        if (count3 <= 0) count3 = 0;
        if (count4 <= 0) count4 = 0;
        if (count5 <= 0) count5 = 0;

        mCount = heightsize / 1.04895f - count;
        RectF rectF = new RectF(widthsize / 5.8f, mCount, widthsize / 4.46154f, heightsize / 1.04895f);

        mCount1