private void changeHeaderByState(int state) {
switch (state) {
case DONE:
headerView.setPadding(0, -headerViewHeight, 0, 0);
firstSetpView.setVisibility(View.VISIBLE);
secondAnimation.stop();
secondStepView.setVisibility(View.GONE);
break;
case RELEASE_TO_REFRESH:
tv_pull_to_refresh.setText("松开刷新");
break;
case PULL_TO_REFRESH:
tv_pull_to_refresh.setText("下拉刷新");
state = DONE;
firstSetpView.setVisibility(View.VISIBLE);
secondAnimation.stop();
secondStepView.setVisibility(View.GONE);
break;
case REFRESHING:
tv_pull_to_refresh.setText("正在刷新");
firstSetpView.setVisibility(View.GONE);
secondStepView.setVisibility(View.VISIBLE);
secondAnimation.stop();
secondAnimation.start();
break;
default:
break;
}
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (isEnd) {
if (isRefreable) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
if (mFirstVisibleItem == 0 && !isRecord) {
isRecord = true;
startY = ev.getY();
}
break;
case MotionEvent.ACTION_MOVE:
float tempY = ev.getY();
if (mFirstVisibleItem == 0 && !isRecord) {
isRecord = true;
startY = tempY;
}
if (state != REFRESHING && isRecord) {
offsetY = tempY - startY;
float currentHeight = (-headerViewHeight + offsetY / 3);
float currentProgress = 1 + currentHeight / headerViewHeight;
if (currentProgress >= 1) {
currentProgress = 1;
}
if (state == RELEASE_TO_REFRESH && isRecord) {
setSelection(0);
// pull to refresh
if (-headerViewHeight + offsetY / RATIO < 0) {
state = PULL_TO_REFRESH;
changeHeaderByState(state);
} else if (offsetY <= 0) {
state = DONE;
changeHeaderByState(state);
}
}
if (state == PULL_TO_REFRESH && isRecord) {
setSelection(0);
if (-headerViewHeight + offsetY / RATIO >= 0) {
state = RELEASE_TO_REFRESH;
changeHeaderByState(state);
} else if (offsetY <= 0) {
state = DONE;
changeHeaderByState(state);
}
}
if (state == DONE && isRecord) {
if (offsetY >= 0) {
state = PULL_TO_REFRESH;
}
}
if (state == PULL_TO_REFRESH) {
headerView.setPadding(0, (int) (-headerViewHeight + offsetY / RATIO), 0, 0);
firstSetpView.setCurrentProgress(currentProgress);
firstSetpView.postInvalidate();
}
if (state == RELEASE_TO_REFRESH) {
headerView.setPadding(0, (int) (-headerViewHeight + offsetY / RATIO), 0, 0);
firstSetpView.setCurrentProgress(currentProgress);
firstSetpView.postInvalidate();
}
}
break;
case MotionEvent.ACTION_UP:
if (state == PULL_TO_REFRESH) {
this.smoothScrollBy(
(int) (-headerViewHeight + offsetY / RATIO) + headerViewHeight, 500);
changeHeaderByState(state);
}
if (state == RELEASE_TO_REFRESH) {
this.smoothScrollBy((int) (-headerViewHeight + offsetY / RATIO), 500);
state = REFRESHING;
mOnRefreshListener.onRefresh();
changeHeaderByState(state);
}
isRecord = false;
break;
}
}
}
return super.onTouchEvent(ev);
}
