- 禁止SeekBar拖动和点击
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!mIsUserSeekable || !isEnabled()) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (isInScrollingContainer()) {
mTouchDownX = event.getX();
} else {
startDrag(event);
}
break;
case MotionEvent.ACTION_MOVE:
if (mIsDragging) {
trackTouchEvent(event);
} else {
final float x = event.getX();
if (Math.abs(x - mTouchDownX) > mScaledTouchSlop) {
startDrag(event);
}
}
break;
case MotionEvent.ACTION_UP:
if (mIsDragging) {
trackTouchEvent(event);
onStopTrackingTouch();
setPressed(false);
} else {
// Touch up when we never crossed the touch slop threshold should
// be interpreted as a tap-seek to that location.
onStartTrackingTouch();
trackTouchEvent(event);
onStopTrackingTouch();
}
// ProgressBar doesn't know to repaint the thumb drawable
// in its inactive state when the touch stops (because the
// value has not apparently changed)
invalidate();
break;
case MotionEvent.ACTION_CANCEL:
if (mIsDragging) {
onStopTrackingTouch();
setPressed(false);
}
invalidate(); // see above explanation
break;
}
return true;
}
-
可拖动不可点击
我们只需要判断MotionEvent事件是否位于thumb上,在thumb上则允许操作.代码如下!
/**
* 判断MotionEvent事件是否位于thumb上
*
* @param event
* @param thumbBounds
* @return
*/
private boolean isTouchInThumb(MotionEvent event, Rect thumbBounds) {
float x = event.getX();
float y = event.getY();
//根据偏移量和左边距确定thumb位置
int left = thumbBounds.left - getThumbOffset() + getPaddingLeft();
int right = left + thumbBounds.width();
if (x >= left && x <= right
&& y >= thumbBounds.top && y <= thumbBounds.bottom)
return true;
return false;
}
//自定义seekBar的onTouchEvent：
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (!isTouchInThumb(event, getThumb().getBounds())) {
return false;
}
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
break;
}
return super.onTouchEvent(event);
}
- 增大滑块触摸区域
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="@color/colorPrimary"></solid>
<size
android:width="60dp"
android:height="60dp"
></size>
<stroke android:width="50dp"
android:color="@android:color/transparent"
></stroke>
</shape>
- 设置滑块的等待动画
//seekbar滑块动画
mRotateDrawable = (RotateDrawable) getResources().getDrawable(R.drawable.audio_loading_progress);
mValueAnimator = ValueAnimator.ofInt(0, 10000);
mValueAnimator.setDuration(6000);
mValueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
Integer level = (Integer) animation.getAnimatedValue();
level = level + 200;
mRotateDrawable.setLevel(level);
}
});
mValueAnimator.setRepeatMode(ValueAnimator.RESTART);
mValueAnimator.setRepeatCount(ValueAnimator.INFINITE);
mValueAnimator.setInterpolator(new LinearInterpolator());
mSeekBar.setThumb(mRotateDrawable);
mValueAnimator.start();
动画
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/seekbar_thumb_wait"
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="-1">
</rotate>
