下面列出了android.widget.RelativeLayout#getChildAt ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.example_list_item, null);
}
RelativeLayout l = (RelativeLayout) ((LinearLayout) convertView).getChildAt(1);
((ImageView) l.getChildAt(0)).setImageResource((Integer) groups[groupPosition][0]);
LinearLayout box = (LinearLayout) l.getChildAt(1);
TextView title = (TextView) box.getChildAt(0);
title.setText(groups[groupPosition][1].toString());
((TextView) box.getChildAt(1)).setText(groups[groupPosition][2].toString());
if (isExpanded) {
title.setTextColor(mContext.getResources().getColorStateList(R.color.base_blue));
((ImageView) l.getChildAt(2)).setImageResource(R.drawable.more_up);
if (groupPosition > 0)
((LinearLayout) convertView).getChildAt(0).setVisibility(View.VISIBLE);
} else {
title.setTextColor(mContext.getResources().getColorStateList(R.color.new_text_color_first));
((ImageView) l.getChildAt(2)).setImageResource(R.drawable.more_dowm);
((LinearLayout) convertView).getChildAt(0).setVisibility(View.INVISIBLE);
}
return convertView;
}
private void updatePreferences(ListView accountList){
for(int i = 0; i < accountList.getChildCount(); i++) {
try {
LinearLayout rootLayout = (LinearLayout) accountList.getChildAt(i);
RelativeLayout preferenceLayout = (RelativeLayout) rootLayout.getChildAt(1);
TextView titleView = (TextView) preferenceLayout.getChildAt(0);
TextView summaryView = (TextView) preferenceLayout.getChildAt(1);
if(titleView.getText().toString().equals(getString(R.string.language))) {
summaryView.setCompoundDrawablePadding(10);
summaryView.setCompoundDrawablesRelativeWithIntrinsicBounds(LanguageUtil.getLanguageFlagDrawable(getActivity(),
LanguageUtil.getCurrentLanguageCode(getActivity())), null, null, null);
} else if(titleView.getText().toString().equals(getString(R.string.theme))) {
summaryView.setText(ThemeUtil.getThemePreview(getActivity(), ThemeUtil.getCurrentTheme(getActivity())));
summaryView.setTextSize(30);
}
} catch (Exception e){
e.printStackTrace();
}
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
RelativeLayout relativeLayout = (RelativeLayout) this.mInflater.inflate(R.layout.adapter_rhythm_icon, null);
//设置item布局的大小以及Y轴的位置
relativeLayout.setLayoutParams(new RelativeLayout.LayoutParams((int) itemWidth, mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_item_height)));
relativeLayout.setTranslationY(itemWidth*3/7);
//设置第二层RelativeLayout布局的宽和高
RelativeLayout childRelativeLayout = (RelativeLayout) relativeLayout.getChildAt(0);
CardView cardRhythm = (CardView)relativeLayout.findViewById(R.id.card_rhythm);
TextView statName=(TextView)relativeLayout.findViewById(R.id.stat_name);
cardRhythm.setCardBackgroundColor(mColorList[position]);
statName.setText(sStatNames[position]);
int relativeLayoutWidth = (int) itemWidth - 2 * mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_icon_margin);
childRelativeLayout.setLayoutParams(new RelativeLayout.LayoutParams(relativeLayoutWidth, mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_item_height) - 2 * mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_icon_margin)));
return relativeLayout;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
RelativeLayout relativeLayout = (RelativeLayout) this.mInflater.inflate(R.layout.adapter_rhythm_icon, null);
//set item layout size and y postion
relativeLayout.setLayoutParams(new RelativeLayout.LayoutParams((int) itemWidth, mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_item_height)));
relativeLayout.setTranslationY(itemWidth);
//set second RelativeLayout width and height
RelativeLayout childRelativeLayout = (RelativeLayout) relativeLayout.getChildAt(0);
int relativeLayoutWidth = (int) itemWidth - 2 * mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_icon_margin);
childRelativeLayout.setLayoutParams(new RelativeLayout.LayoutParams(relativeLayoutWidth, mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_item_height) - 2 * mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_icon_margin)));
ImageView imageIcon = (ImageView) relativeLayout.findViewById(R.id.image_icon);
//cul ImageView size
int iconSize = (relativeLayoutWidth - 2 * mContext.getResources().getDimensionPixelSize(R.dimen.rhythm_icon_margin));
ViewGroup.LayoutParams iconParams = imageIcon.getLayoutParams();
iconParams.width = iconSize;
iconParams.height = iconSize;
imageIcon.setLayoutParams(iconParams);
//set bg img
Glide.with(mContext).load(mCardList.get(position).getIconUrl()).fitCenter().into(imageIcon);
return relativeLayout;
}
private void buildCellOfDay(RelativeLayout cellOfDay, int dayCounter, int dayOfWeek, boolean isToday) {
if (cellOfDay == null) return;
cellOfDay.setOnClickListener(this);
cellOfDay.setBackgroundColor(getResources().getColor(R.color.default_background));
TextView dateText = (TextView) cellOfDay.getChildAt(LABEL_DATE_TEXT_INDEX);
dateText.setText(String.valueOf(dayCounter));
if (isToday) dateText.setTypeface(null, Typeface.BOLD);
else dateText.setTypeface(null, Typeface.NORMAL);
if (mHolidayHightlightType != null && mHolidayHightlightType.equals(HOLIDAY_HIGHLIGHT_TYPE_BACKGROUND)) {
if (dayOfWeek == Calendar.SUNDAY) cellOfDay.setBackgroundColor(getResources().getColor(R.color.sunday_background));
else if (dayOfWeek == Calendar.SATURDAY) cellOfDay.setBackgroundColor(getResources().getColor(R.color.saturday_background));
}
else {
if (dayOfWeek == Calendar.SUNDAY) dateText.setTextColor(getResources().getColor(R.color.sunday_text));
else if (dayOfWeek == Calendar.SATURDAY) dateText.setTextColor(getResources().getColor(R.color.saturday_text));
}
}
public void updateCounter(int position, int count, boolean allMuted)
{
RelativeLayout frame = (RelativeLayout) tabsContainer.getChildAt(position);
if (frame != null && frame.getChildCount() > 1)
{
TextView tv = (TextView) frame.getChildAt(1);
if (tv != null)
{
if (count > 0 && !FeaturedSettings.tabSettings.hideTabsCounters)
{
tv.setVisibility(VISIBLE);
tv.setText(count >= 10000 && FeaturedSettings.tabSettings.limitTabsCounters ? "+9999" : String.format(Locale.getDefault(), "%d", count));
tv.getBackground().setColorFilter(allMuted ?
Theme.getColor(Theme.key_chats_unreadCounterMuted) :
Theme.getColor(Theme.key_chats_unreadCounter), PorterDuff.Mode.SRC_IN);
}
else
{
tv.setVisibility(INVISIBLE);
}
tv.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 13);
tv.setTextColor(Theme.getColor(Theme.key_chats_unreadCounterText));
tv.setPadding(AndroidUtilities.dp(FeaturedSettings.tabSettings.chatsTabCounterSize > 10 ? FeaturedSettings.tabSettings.chatsTabCounterSize - 7 : 4), 0,
AndroidUtilities.dp(FeaturedSettings.tabSettings.chatsTabCounterSize > 10 ? FeaturedSettings.tabSettings.chatsTabCounterSize - 7 : 4), 0);
}
}
}
@Override
public void onBindView(@Nullable Bundle savedInstanceState, @NonNull View view) {
final int size = ITEMS.size();
for(int i = 0; i < size; i++){
LayoutInflater.from(getContext()).inflate(R.layout.bottom_item_icon_text_layout, mBottomBar);
final RelativeLayout item = (RelativeLayout) mBottomBar.getChildAt(i);
//设置每一个item的点击事件
item.setTag(i);
item.setOnClickListener(this);
//图标
final IconTextView itemIcon = (IconTextView) item.getChildAt(0);
//文字
final AppCompatTextView itemTitle = (AppCompatTextView) item.getChildAt(1);
final BottomTabBean bean = TAB_BEANS.get(i);
//初始化数据
itemIcon.setText(bean.getIcon());
itemTitle.setText(bean.getTitle());
if (i == mIndexDelegate) {
itemIcon.setTextColor(mClickedColor);
itemTitle.setTextColor(mClickedColor);
}
}
final ISupportFragment[] delegateArray = ITEM_DELEGATES.toArray(new ISupportFragment[size]);
//加载多个同级根Fragment,类似Wechat, QQ主页的场景
getSupportDelegate().loadMultipleRootFragment(R.id.bottom_bar_delegate_container, mIndexDelegate, delegateArray);
}
@Override
public void onClick(View v) {
final int tag = (int) v.getTag();
resetColor();
final RelativeLayout item = (RelativeLayout) v;
//切换颜色
final IconTextView itemIcon = (IconTextView) item.getChildAt(0);
itemIcon.setTextColor(mClickedColor);
final AppCompatTextView itemTitle = (AppCompatTextView) item.getChildAt(1);
itemTitle.setTextColor(mClickedColor);
//切换Fragment showFragment hideFragment
getSupportDelegate().showHideFragment(ITEM_DELEGATES.get(tag), ITEM_DELEGATES.get(mCurrentDelegate));
mCurrentDelegate = tag;
}
private void resetColor(){
final int count = mBottomBar.getChildCount();
for(int i = 0; i < count; i++){
final RelativeLayout item = (RelativeLayout) mBottomBar.getChildAt(i);
final IconTextView itemIcon = (IconTextView) item.getChildAt(0);
itemIcon.setTextColor(Color.GRAY);
final AppCompatTextView itemTitle = (AppCompatTextView) item.getChildAt(1);
itemTitle.setTextColor(Color.GRAY);
}
}
public void updateCounter(int position, int count, boolean allMuted)
{
RelativeLayout frame = (RelativeLayout) tabsContainer.getChildAt(position);
if (frame != null && frame.getChildCount() > 1)
{
TextView tv = (TextView) frame.getChildAt(1);
if (tv != null)
{
if (count > 0 && !FeaturedSettings.tabSettings.hideTabsCounters)
{
tv.setVisibility(VISIBLE);
tv.setText(count >= 10000 && FeaturedSettings.tabSettings.limitTabsCounters ? "+9999" : String.format(Locale.getDefault(), "%d", count));
tv.getBackground().setColorFilter(allMuted ?
Theme.getColor(Theme.key_chats_unreadCounterMuted) :
Theme.getColor(Theme.key_chats_unreadCounter), PorterDuff.Mode.SRC_IN);
}
else
{
tv.setVisibility(INVISIBLE);
}
tv.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 13);
tv.setTextColor(Theme.getColor(Theme.key_chats_unreadCounterText));
tv.setPadding(AndroidUtilities.dp(FeaturedSettings.tabSettings.chatsTabCounterSize > 10 ? FeaturedSettings.tabSettings.chatsTabCounterSize - 7 : 4), 0,
AndroidUtilities.dp(FeaturedSettings.tabSettings.chatsTabCounterSize > 10 ? FeaturedSettings.tabSettings.chatsTabCounterSize - 7 : 4), 0);
}
}
}
public void setCurrentItem(int item) {
if (this.mViewPager != null) {
if (item != -1 || this.mSelectedTabIndex != item) {
this.mSelectedTabIndex = item;
int tabCount = this.mTabLayout.getChildCount();
for (int i = 0; i < tabCount; i++) {
RelativeLayout childLayout = (RelativeLayout) this.mTabLayout.getChildAt(i);
for (int j = 0; j < childLayout.getChildCount(); j++) {
boolean isSelected;
if (i == item) {
isSelected = true;
} else {
isSelected = false;
}
View view = childLayout.getChildAt(j);
if (view instanceof TabView) {
view.setSelected(isSelected);
if (isSelected) {
animateToTab(item);
}
} else {
view.setSelected(isSelected);
}
}
}
this.mViewPager.setCurrentItem(item, false);
}
}
}
/**
* 初始化多图文消息的item
*
* @param data
* @param i
* @param itemView
*/
private void initItem(EverydayMessage data, int i, RelativeLayout itemView) {
ImageView itemImg = (ImageView) itemView.getChildAt(0);
TextView itemText = (TextView) itemView.getChildAt(1);
kjb.display(itemImg, data.getImageUrlList().get(i));
itemText.setText(data.getTitleList().get(i));
itemView.setOnClickListener(getItemMessageClickListener(data
.getUrlList().get(i)));
}
public static void closePopup() {
final RelativeLayout popupContainer = (RelativeLayout) Shared.activity.findViewById(R.id.popup_container);
int childCount = popupContainer.getChildCount();
if (childCount > 0) {
View background = null;
View viewPopup = null;
if (childCount == 1) {
viewPopup = popupContainer.getChildAt(0);
} else {
background = popupContainer.getChildAt(0);
viewPopup = popupContainer.getChildAt(1);
}
AnimatorSet animatorSet = new AnimatorSet();
ObjectAnimator scaleXAnimator = ObjectAnimator.ofFloat(viewPopup, "scaleX", 0f);
ObjectAnimator scaleYAnimator = ObjectAnimator.ofFloat(viewPopup, "scaleY", 0f);
if (childCount > 1) {
ObjectAnimator alphaAnimator = ObjectAnimator.ofFloat(background, "alpha", 0f);
animatorSet.playTogether(scaleXAnimator, scaleYAnimator, alphaAnimator);
} else {
animatorSet.playTogether(scaleXAnimator, scaleYAnimator);
}
animatorSet.setDuration(300);
animatorSet.setInterpolator(new AccelerateInterpolator(2));
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
popupContainer.removeAllViews();
}
});
animatorSet.start();
}
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = new ViewHolder();
LayoutInflater inflater = LayoutInflater.from(getContext());
RelativeLayout mainView = (RelativeLayout)
inflater.inflate(R.layout.listview_activity_dualrow, null);
holder.TextView1 = (TextView) mainView.getChildAt(0);
holder.TextView2 = (TextView) mainView.getChildAt(1);
holder.TextView1.setText(getItem(position));
holder.TextView2.setText(getItem(allLength / 2 + position));
holder.TextView1.setSingleLine();
holder.TextView1.setEllipsize(TextUtils.TruncateAt.MIDDLE);
holder.TextView2.setSingleLine();
holder.TextView2.setEllipsize(TextUtils.TruncateAt.MIDDLE);
return mainView;
}
@Override
public void onItemClick(AdapterView<?> a, View view, int position, long id) {
if(buttonClicked){
return;
}
buttonClicked = true;
final RelativeLayout itemLayout = (RelativeLayout)view;
final TextView itemText = (TextView)itemLayout.getChildAt(1);
final RelativeLayout overLay = new RelativeLayout(mContext);
overLay.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
overLay.setBackgroundColor(0x99888888);
itemLayout.addView(overLay);
itemText.setTextColor(Color.DKGRAY);
Intent intent = new Intent(EditDatabaseActivity.this, FaceDetectionActivity.class);
intent.putExtra("Training", false);
intent.putExtra("personIndex", position);
EditDatabaseActivity.this.startActivity(intent);
EditDatabaseActivity.this.finish();
itemLayout.postDelayed(new Runnable() {
@Override
public void run() {
buttonClicked = false;
itemLayout.removeView(overLay);
itemText.setTextColor(Color.BLACK);
}
}, 2000);
}
public static void closePopup() {
final RelativeLayout popupContainer = (RelativeLayout) Shared.activity.findViewById(R.id.popup_container);
int childCount = popupContainer.getChildCount();
if (childCount > 0) {
View background = null;
View viewPopup = null;
if (childCount == 1) {
viewPopup = popupContainer.getChildAt(0);
} else {
background = popupContainer.getChildAt(0);
viewPopup = popupContainer.getChildAt(1);
}
AnimatorSet animatorSet = new AnimatorSet();
ObjectAnimator scaleXAnimator = ObjectAnimator.ofFloat(viewPopup, "scaleX", 0f);
ObjectAnimator scaleYAnimator = ObjectAnimator.ofFloat(viewPopup, "scaleY", 0f);
if (childCount > 1) {
ObjectAnimator alphaAnimator = ObjectAnimator.ofFloat(background, "alpha", 0f);
animatorSet.playTogether(scaleXAnimator, scaleYAnimator, alphaAnimator);
} else {
animatorSet.playTogether(scaleXAnimator, scaleYAnimator);
}
animatorSet.setDuration(300);
animatorSet.setInterpolator(new AccelerateInterpolator(2));
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
popupContainer.removeAllViews();
}
});
animatorSet.start();
}
}
/**
* Attempt to modify the convertView instead of inflating a new View for this CardStack.
* If convertView isn't compatible, it isn't modified.
*
* @param convertView view to try reusing
* @return true on success, false if the convertView is not compatible
*/
private boolean convert(View convertView) {
// only convert singleton stacks
if (cards.size() != 1) {
Log.d("CardsUI", "Can't convert view: amount of cards is " + cards.size());
return false;
}
RelativeLayout container = (RelativeLayout) convertView.findViewById(R.id.stackContainer);
if (container == null) {
Log.d("CardsUI", "Can't convert view: can't find stackContainer");
return false;
}
if (container.getChildCount() != 1) {
Log.d("CardsUI", "Can't convert view: child count is " + container.getChildCount());
return false;
}
// check to see if they're compatible Card types
Card card = cards.get(0);
View convertCardView = container.getChildAt(0);
if (convertCardView == null || convertCardView.getId() != card.getId()) {
Log.d("CardsUI", String.format("Can't convert view: child Id is 0x%x, card Id is 0x%x", convertCardView.getId(), card.getId()));
return false;
}
if (card.convert(convertCardView))
return true;
return false;
}
private MapView getMapView() {
RelativeLayout layout = (RelativeLayout) map.getView();
return (MapView) layout.getChildAt(0);
}
private ImageViewCanvas getImageViewCanvas(RelativeLayout layout) {
return (ImageViewCanvas) layout.getChildAt(0);
}
public SelectOneAutoAdvanceWidget(Context context, FormEntryPrompt prompt) {
super(context, prompt);
LayoutInflater inflater = LayoutInflater.from(getContext());
mItems = getSelectChoices();
buttons = new Vector<>();
listener = (AdvanceToNextListener)context;
String s = null;
if (prompt.getAnswerValue() != null) {
s = ((Selection)prompt.getAnswerValue().getValue()).getValue();
}
//Is this safe enough from collisions?
buttonIdBase = Math.abs(prompt.getIndex().hashCode());
if (mItems != null) {
for (int i = 0; i < mItems.size(); i++) {
RelativeLayout thisParentLayout =
(RelativeLayout)inflater.inflate(R.layout.quick_select_layout, null);
final LinearLayout questionLayout = (LinearLayout)thisParentLayout.getChildAt(0);
ImageView rightArrow = (ImageView)thisParentLayout.getChildAt(1);
final RadioButton r = new RadioButton(getContext());
r.setOnCheckedChangeListener(this);
String markdownText = prompt.getSelectItemMarkdownText(mItems.get(i));
if (markdownText != null) {
r.setText(forceMarkdown(markdownText));
} else {
r.setText(prompt.getSelectChoiceText(mItems.get(i)));
}
r.setTextSize(TypedValue.COMPLEX_UNIT_DIP, mQuestionFontSize);
r.setId(i + buttonIdBase);
r.setEnabled(!prompt.isReadOnly());
r.setFocusable(!prompt.isReadOnly());
Drawable image = getResources().getDrawable(R.drawable.icon_auto_advance_arrow);
rightArrow.setImageDrawable(image);
rightArrow.setOnTouchListener((v, event) -> {
r.onTouchEvent(event);
return false;
});
buttons.add(r);
if (mItems.get(i).getValue().equals(s)) {
r.setChecked(true);
}
String audioURI = null;
audioURI =
prompt.getSpecialFormSelectChoiceText(mItems.get(i),
FormEntryCaption.TEXT_FORM_AUDIO);
String imageURI = null;
imageURI =
prompt.getSpecialFormSelectChoiceText(mItems.get(i),
FormEntryCaption.TEXT_FORM_IMAGE);
String videoURI = null;
videoURI = prompt.getSpecialFormSelectChoiceText(mItems.get(i), "video");
String bigImageURI = null;
bigImageURI = prompt.getSpecialFormSelectChoiceText(mItems.get(i), "big-image");
MediaLayout mediaLayout = MediaLayout.buildAudioImageVisualLayout(getContext(), r, audioURI, imageURI, videoURI, bigImageURI);
questionLayout.addView(mediaLayout);
// Last, add the dividing line (except for the last element)
ImageView divider = new ImageView(getContext());
divider.setBackgroundResource(android.R.drawable.divider_horizontal_bright);
if (i != mItems.size() - 1) {
mediaLayout.addDivider(divider);
}
addView(thisParentLayout);
}
}
}