android.support.design.widget.BottomSheetBehavior#STATE_EXPANDED源码实例Demo

@Override
public void onClick(View view) {
    switch (view.getId()){
        case R.id.theme_selected :
        case R.id.fab:
            // change the state of the bottom sheet
            switch (mBottomSheetBehavior.getState()){
                case BottomSheetBehavior.STATE_HIDDEN :
                    mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                    break;

                case BottomSheetBehavior.STATE_COLLAPSED :
                    mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                    break;

                case BottomSheetBehavior.STATE_EXPANDED :
                    mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                    break;
            }
            break;
    }
}
 

private static void toggleBottomSheet(View bottomSheet) {

        BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);

        int state = bottomSheetBehavior.getState();

        switch (state) {
            case BottomSheetBehavior.STATE_COLLAPSED:
                bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                break;
            case BottomSheetBehavior.STATE_HIDDEN:
                bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                break;
            case BottomSheetBehavior.STATE_EXPANDED:
                bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
                break;

        }
    }
 

public boolean onBackPressed() {
    if (bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        return false;
    }
    return true;
}
 

@Override
public void onMapClick(LatLng latLng) {
    ((RouteActivity) getActivity()).showToolbar();
    if (mBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
    }
}
 

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (mDrawer.isDrawerOpen(Gravity.START)) {
            mDrawer.closeDrawer(Gravity.START);
        } else if (mBehaviorPoi.getState() == BottomSheetBehavior.STATE_EXPANDED) {
            mBehaviorPoi.setState(BottomSheetBehavior.STATE_HIDDEN);

        } else {
            exitApp();
        }
        return true;
    }
    return super.onKeyDown(keyCode, event);
}
 

@Override
public void onMapClick(LatLng latLng) {
    ((RouteActivity) getActivity()).showToolbar();
    if (mBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
    }
}
 

@Override
public void onMapClick(LatLng latLng) {
    ((RouteActivity) getActivity()).showToolbar();
    if (mBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
    }
}
 

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (mDrawer.isDrawerOpen(Gravity.START)) {
            mDrawer.closeDrawer(Gravity.START);
        } else if (mBehaviorPoi.getState() == BottomSheetBehavior.STATE_EXPANDED) {
            mBehaviorPoi.setState(BottomSheetBehavior.STATE_HIDDEN);

        } else {
            exitApp();
        }
        return true;
    }
    return super.onKeyDown(keyCode, event);
}
 

private void resetBottomSheetState(int bottomSheetState) {
  if (bottomSheetState > INVALID_STATE) {
    boolean isShowing = bottomSheetState == BottomSheetBehavior.STATE_EXPANDED;
    summaryBehavior.setHideable(!isShowing);
    summaryBehavior.setState(bottomSheetState);
  }
}
 

@Override
public void showBottomSheet() {
  if (mBottomSheetBehavior.getState() != BottomSheetBehavior.STATE_EXPANDED) {
    mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
  } else {
    mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
  }
}
 

@Override
public void onBackPressed() {
    if (behavior.getState() == BottomSheetBehavior.STATE_EXPANDED)
        behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
    else
        super.onBackPressed();
}
 

@Override
public void onBackPressed() {
    if (bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        return;
    }
    super.onBackPressed();
    Luhn.sLuhnCallback.onFinished(false);
}
 

@Override
public void onBackPressed() {
    if (bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        return;
    }
    super.onBackPressed();
    sLuhnCallback.onFinished(false);
}
 

@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
    if (fluentAppBarType == CLICK_FLUENT) {
        if (newState == BottomSheetBehavior.STATE_EXPANDED) {
            handleShowFluentBlur();
        } else if (newState == BottomSheetBehavior.STATE_COLLAPSED) {
            BlurView blurView = (BlurView) findViewById(R.id.blurview);
            blurView.setBlurEnabled(false);
            setBackgroundColor(backgroundColour);
        }
    }
}
 

@OnClick(R.id.card_item_1)
void showBottomSheet() {
    int lastState = bottomSheetBehavior.getState();
    switch (lastState) {
        case BottomSheetBehavior.STATE_COLLAPSED:
            bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
            break;
        case BottomSheetBehavior.STATE_EXPANDED:
            bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
            break;
        case BottomSheetBehavior.STATE_HIDDEN:
            bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
            break;
    }
}
 

private void bottomSheet() {

        if (mBottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
            mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        } else {
            mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
        }
    }
 

@Override
public void onResume() {
    super.onResume();
    presenter.getCategories();
    if (bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
        presenter.loadTimeline();
    }
    cleanAmountInput();
}
 

/**
 * Menu methods
 */
@Override
public boolean isMenuOpen() {
	return bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED;
}
 

@Override
public void onBackPressed() {
	if (behavior.getState() == BottomSheetBehavior.STATE_EXPANDED) behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
	else super.onBackPressed();
}
 

@Override
public void onBackPressed() {
    if (behavior.getState() == BottomSheetBehavior.STATE_EXPANDED) behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
    else super.onBackPressed();
}