可以点击开始暂停的滑动进度条

项目出了这么一个设计图，要求做出一个这样的音频控制的进度条（如下图）。进度条有三个功能：

1.可以随着音频播放自动更新进度

2.可以按着图标滑动改变进度

3.可以点击图标让音频开始或者暂停。

 

 

 

网上没找到现成的这种控件，只有自己写了。代码分享如下：

 

package com.unipus.view;

import android.content.Context;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.AppCompatSeekBar;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;



/**
 * 可以设置滑块点击事件的seek bar
 *  
 */

public class SeekBarWithThumbTouch extends AppCompatSeekBar {
    public static final String TAG = SeekBarWithThumbTouch.class.getSimpleName();
    private int scaledTouchSlop = 0;
    private float initTouchX = 0;
    private boolean thumbPressed = false;
    private Drawable mThumb;//滑块图片
    private boolean isMove;//是否可以滑动
    private OnClickThumbListener mListener;

    public SeekBarWithThumbTouch(Context context) {
        super(context);
        init(context);
    }

    public SeekBarWithThumbTouch(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public SeekBarWithThumbTouch(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    //设置大了点击的时候容易来回闪动
    private void init(Context context) {
        scaledTouchSlop = 5;//ViewConfiguration.get(context).getScaledTouchSlop();
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        Drawable thumb = null;
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                thumb = getSeekBarThumb();//works only for API >=16!
                if (thumb != null) {
                    //contains current position of thumb in view as bounds
                    RectF bounds = new RectF(thumb.getBounds());
                    thumbPressed = bounds.contains(event.getX(), event.getY());
                    if (thumbPressed) {
                        Log.d(TAG, "pressed");
                        initTouchX = event.getX();
                    }
                    return true;
                }
                break;
            case MotionEvent.ACTION_UP:
                if (thumbPressed) {
                    thumbPressed = false;
                    Log.d(TAG, " move up init touch x : " + initTouchX + " get x : " + event.getX() + "  progress : " + getProgress() + " scaledTouchSlop : " + scaledTouchSlop);
                    if (Math.abs(initTouchX - event.getX()) > scaledTouchSlop) {
                        Log.d(TAG, " move up : ");
                        initTouchX = 0;
                        if (isMove) return super.onTouchEvent(event);
                    } else {
                        Log.d(TAG, "was pressed -- listener call");
                        if (mListener != null) mListener.onClickThumb();
                    }
                }
                return true;
            case MotionEvent.ACTION_MOVE:
                if (!isMove) {
                    Log.e(TAG, " is move : " + isMove);
                    return true;
                }
                break;
        }

        return super.onTouchEvent(event);
    }

    private Drawable getSeekBarThumb() {
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            return getThumb();
        }
        return mThumb;
    }

    public void setSeekThumb(Drawable thumb) {
        this.mThumb = thumb;
    }

    public void setSeekBarIsTouchMove(boolean isMove) {
        this.isMove = isMove;
    }

    public void setOnclickThumbListener(OnClickThumbListener listener) {
        this.mListener = listener;
    }

    public interface OnClickThumbListener {
        void onClickThumb();
    }
}