下面列出了android.view.View#setOnFocusChangeListener ( ) 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。
protected final void addFocusChangeListener(OnFocusChangeListener l){
View view;
if(l != null && (view = getRealView()) != null) {
if( mFocusChangeListeners == null){
mFocusChangeListeners = new ArrayList<>();
view.setFocusable(true);
view.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
for (OnFocusChangeListener listener : mFocusChangeListeners){
if(listener != null){
listener.onFocusChange(hasFocus);
}
}
}
});
}
mFocusChangeListeners.add(l);
}
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
Presenter presenter = mPresenters.get(viewType);
Presenter.ViewHolder presenterVh = presenter.onCreateViewHolder(parent);
View view = presenterVh.view;
ViewHolder viewHolder = new ViewHolder(presenter, view, presenterVh);
if (mAdapterListener != null) {
mAdapterListener.onCreate(viewHolder);
}
View presenterView = viewHolder.mHolder.view;
if (presenterView != null) {
viewHolder.mFocusChangeListener.mChainedListener = presenterView.getOnFocusChangeListener();
presenterView.setOnFocusChangeListener(viewHolder.mFocusChangeListener);
}
if (mFocusHighlight != null) {
mFocusHighlight.onInitializeView(view);
}
return viewHolder;
}
@Override public void onChildViewAttachedToWindow(View view) {
if (mOnItemClickListener != null) {
view.setOnClickListener(mOnClickListener);
}
if (mOnItemLongClickListener != null) {
view.setOnLongClickListener(mOnLongClickListener);
}
if (mOnItemTouchListener != null) {
view.setOnTouchListener(mOnTouchListener);
}
if (mOnItemFocusChangeListener != null) {
view.setOnFocusChangeListener(mOnFocusChangeListener);
}
if (mOnItemKeyListener != null) {
view.setOnKeyListener(mOnKeyListener);
}
}
private void setupFormFieldOnFocusChangeMode(final FormField formField)
{
final View view = formField.getView();
if (isFieldValid(formField))
{
addValidField(formField);
}
view.setOnFocusChangeListener(new View.OnFocusChangeListener()
{
@Override
public void onFocusChange(View v, boolean hasFocus)
{
if (!hasFocus)
{
validateField(formField);
}
}
});
setupTextChangeListener(formField, false);
}
@Override
public Presenter.ViewHolder onCreateViewHolder(ViewGroup parent) {
if (mContext == null) {
mContext = parent.getContext();
}
View view = LayoutInflater.from(mContext).inflate(R.layout.item_app_installed, parent, false);
view.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
v.findViewById(R.id.tv_app_name).setSelected(hasFocus);
}
});
return new ViewHolder(view);
}
static void setComponentFocusChangeListener(View v, ComponentFocusChangeListener listener) {
if (v instanceof ComponentHost) {
((ComponentHost) v).setComponentFocusChangeListener(listener);
} else {
v.setOnFocusChangeListener(listener);
v.setTag(R.id.component_focus_change_listener, listener);
}
}
public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks,
String description) {
if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) {
throw new RuntimeException("Expected custom content screen to exist");
}
// Add the custom content to the full screen custom page
CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID);
int spanX = customScreen.getCountX();
int spanY = customScreen.getCountY();
CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY);
lp.canReorder = false;
lp.isFullscreen = true;
if (customContent instanceof Insettable) {
((Insettable)customContent).setInsets(mInsets);
}
// Verify that the child is removed from any existing parent.
if (customContent.getParent() instanceof ViewGroup) {
ViewGroup parent = (ViewGroup) customContent.getParent();
parent.removeView(customContent);
}
customScreen.removeAllViews();
customContent.setFocusable(true);
customContent.setOnKeyListener(new FullscreenKeyEventListener());
customContent.setOnFocusChangeListener(mLauncher.mFocusHandler
.getHideIndicatorOnFocusListener());
customScreen.addViewToCellLayout(customContent, 0, 0, lp, true);
mCustomContentDescription = description;
mCustomContentCallbacks = callbacks;
}
/**
* Registers an editor to receive input from the custom keyboard
*
* @param editor EditText or MongolEditText
* @param allowSystemKeyboard sets whether the system keyboard will popup when an editor is focused
*/
@SuppressWarnings("WeakerAccess")
public void addEditor(View editor, boolean allowSystemKeyboard) {
// editor must be MongolEditText or EditText
if (!(editor instanceof EditText) && !(editor instanceof MongolEditText)) {
throw new RuntimeException("MongolInputMethodManager " +
"only supports adding a MongolEditText or EditText " +
"at this time. You added: " + editor);
}
if (mRegisteredEditors == null) {
mRegisteredEditors = new ArrayList<>();
}
// don't add the same view twice
for (RegisteredEditor item : mRegisteredEditors) {
if (item.view == editor) return;
}
// give the editor's input connection to the keyboard when editor is focused
editor.setOnFocusChangeListener(focusListener);
// TODO if hiding the keyboard on back button then may need to add a touch listener to edit texts too
// get extra updates from MongolEditText
// TODO is there any way for us to get these updates from EditText?
if (editor instanceof MongolEditText) {
((MongolEditText) editor).setOnMongolEditTextUpdateListener(this);
}
// TODO set allow system keyboard to show if hasn't been set
setAllowSystemKeyboard(editor, allowSystemKeyboard);
// add editor
mRegisteredEditors.add(new RegisteredEditor(editor, allowSystemKeyboard));
mCurrentEditor = editor;
}
/**
* Resets UI and window handlers to default state
*/
public void resetUi()
{
final View decorView = getDecorView();
if (decorView != null)
{
decorView.setOnFocusChangeListener(getOnFocusChangeListener());
decorView.setOnSystemUiVisibilityChangeListener(null);
}
init();
setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
}
private void initializeUI(Bundle bundle) {
setContentView(R.layout.activity_dlg_action_input);
Button btnOk = (Button) findViewById(R.id.activity_dlg_action_input_btnOk);
btnOk.setOnClickListener(listenerBtnClickOk);
Button btnAttributes = (Button) findViewById(R.id.activity_dlg_action_input_btnAttributes);
btnAttributes.setOnClickListener(listenerBtnClickAttributes);
Button btnHelp = (Button) findViewById(R.id.activity_dlg_action_input_btnHelp);
btnHelp.setOnClickListener(listenerBtnClickHelp);
llContent = (LinearLayout) findViewById(R.id.activity_dlg_action_input_llDynamicContent);
// Add dynamic content now based on our action type.
ModelAction modelAction = RuleBuilder.instance().getChosenModelAction();
ArrayList<DataType> ruleActionDataOld = RuleBuilder.instance().getChosenRuleActionDataOld();
viewItems = ActionParameterViewFactory.buildUIFromAction(modelAction, ruleActionDataOld, this);
llContent.addView(viewItems.getLayout());
ArrayList<View> textEdits = llContent.getFocusables(View.FOCUS_FORWARD);
for (View t : textEdits) {
t.setOnFocusChangeListener(editTextFocusChangeListener);
}
try {
viewItems.loadState(bundle);
} catch (Exception e) {
Log.e(TAG, "Failed during loadState", e);
}
setTitle(modelAction.getTypeName());
}
public void whenChangeFocusOn(View submittedItem) {
submittedItem.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (!hasFocus) new Blorm(validations, field, errorMessages, validates, onSuccess, onError).onSubmitted();
}
});
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.fragment_manual_treatment, container, false);
spinner_treatment_type = (Spinner) rootView.findViewById(R.id.treatmentSpinner);
spinner_notes = (Spinner) rootView.findViewById(R.id.noteSpinner);
editText_treatment_time = (EditText) rootView.findViewById(R.id.treatmentTime);
editText_treatment_date = (EditText) rootView.findViewById(R.id.treatmentDate);
editText_treatment_value = (EditText) rootView.findViewById(R.id.treatmentValue);
rootView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean b) {
if(b) {
if (view == editText_treatment_date) {
treatmentDatePickerDialog.show();
} else if (view == editText_treatment_time) {
treatmentTimePicker.show();
}
//view.clearFocus();
}
}
});
setupPickers(rootView);
return rootView;
}
@Override
public void onChildAttachedToWindow(View child) {
if (!ViewCompat.hasOnClickListeners(child)) {
child.setOnClickListener(mItemListener);
}
child.setOnLongClickListener(mItemListener);
if (child.getOnFocusChangeListener() == null) {
child.setOnFocusChangeListener(mItemListener);
}
}
@Override
public void onChildAttachedToWindow(View child) {
// 设置单击事件，修复.
if (!child.hasOnClickListeners()) {
child.setOnClickListener(mItemListener);
}
// 设置焦点事件，修复.
if (child.getOnFocusChangeListener() == null) {
child.setOnFocusChangeListener(mItemListener);
}
}
public void setView(View view)
{
LinearLayout l = (LinearLayout) mAlertDialogWindow.findViewById(R.id.contentView);
l.removeAllViews();
ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
view.setLayoutParams(layoutParams);
view.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override public void onFocusChange(View v, boolean hasFocus)
{
mAlertDialogWindow.setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
// show imm
InputMethodManager imm = (InputMethodManager) mContext.getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,
InputMethodManager.HIDE_IMPLICIT_ONLY);
}
});
l.addView(view);
if (view instanceof ViewGroup)
{
ViewGroup viewGroup = (ViewGroup) view;
for (int i = 0; i < viewGroup.getChildCount(); i++)
{
if (viewGroup.getChildAt(i) instanceof EditText)
{
EditText editText = (EditText) viewGroup.getChildAt(i);
editText.setFocusable(true);
editText.requestFocus();
editText.setFocusableInTouchMode(true);
}
}
for (int i = 0; i < viewGroup.getChildCount(); i++)
{
if (viewGroup.getChildAt(i) instanceof AutoCompleteTextView)
{
AutoCompleteTextView autoCompleteTextView = (AutoCompleteTextView) viewGroup
.getChildAt(i);
autoCompleteTextView.setFocusable(true);
autoCompleteTextView.requestFocus();
autoCompleteTextView.setFocusableInTouchMode(true);
}
}
}
}
/**
* 向GridLayout容器中添加Grid元素
*
* @param gridItem Grid元素
*/
private GridBuilder addItem(GridItem gridItem) {
View itemLayout = null;
if (null != mOnViewCreateCallBack) {
itemLayout = mOnViewCreateCallBack.onViewCreate(mLayoutInflater, null == mGridViewHolder
? null : mGridViewHolder.getConvertView(), gridItem);
}
if (null == itemLayout) {
return this;
}
GridLayout.LayoutParams layoutParams = new GridLayout.LayoutParams();
// 优先根据预先取得的width/height设置,但不影响跨列/行数
layoutParams.width = (gridItem.getWidth() > 0 ? gridItem.getWidth() : gridItem.getColumnSpec() * mBaseWidth)
+ ((gridItem.getColumnSpec() > 1 && gridItem.getWidth() <= 0 ? mHorizontalMargin * (gridItem.getColumnSpec() - 1) : 0));
layoutParams.height = (gridItem.getHeight() > 0 ? gridItem.getHeight() : gridItem.getRowSpec() * mBaseHeight)
+ ((gridItem.getRowSpec() > 1 && gridItem.getWidth() <= 0 ? mVerticalMargin * (gridItem.getRowSpec() - 1) : 0));
if (gridItem.getWidth() <= 0) {
gridItem.setWidth(layoutParams.width);
}
if (gridItem.getHeight() <= 0) {
gridItem.setHeight(layoutParams.height);
}
layoutParams.rowSpec = GridLayout.spec(gridItem.getRow(), gridItem.getRowSpec());
layoutParams.columnSpec = GridLayout.spec(gridItem.getColumn(), gridItem.getColumnSpec());
// 设置每个item间距,最外层间距也需要设置(因为需要体现边缘item的scale效果)
if (gridItem.getRow() > 0) {
layoutParams.topMargin = mVerticalMargin;
}
if (gridItem.getColumn() > 0) {
layoutParams.leftMargin = mHorizontalMargin;
}
itemLayout.setLayoutParams(layoutParams);
itemLayout.setFocusable(true);
itemLayout.setClickable(true);
itemLayout.setOnFocusChangeListener(this);
itemLayout.setOnClickListener(this);
itemLayout.setOnKeyListener(mOnKeyListener);
itemLayout.setSoundEffectsEnabled(false);
if (mGridLayout.getChildCount() == 0 && gridItem == mGridItemList.get(0)) {
itemLayout.setTag(GridItem.TAG_FIRST_ITEM);
}
this.mGridLayout.addView(itemLayout);
return this;
}
public void setView(View view) {
LinearLayout l = (LinearLayout) mAlertDialogWindow.findViewById(R.id.contentView);
l.removeAllViews();
ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
view.setLayoutParams(layoutParams);
view.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override public void onFocusChange(View v, boolean hasFocus) {
mAlertDialogWindow.setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
// show imm
InputMethodManager imm = (InputMethodManager) mContext.getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,
InputMethodManager.HIDE_IMPLICIT_ONLY);
}
});
l.addView(view);
if (view instanceof ViewGroup) {
ViewGroup viewGroup = (ViewGroup) view;
for (int i = 0; i < viewGroup.getChildCount(); i++) {
if (viewGroup.getChildAt(i) instanceof EditText) {
EditText editText = (EditText) viewGroup.getChildAt(i);
editText.setFocusable(true);
editText.requestFocus();
editText.setFocusableInTouchMode(true);
}
}
for (int i = 0; i < viewGroup.getChildCount(); i++) {
if (viewGroup.getChildAt(i) instanceof AutoCompleteTextView) {
AutoCompleteTextView autoCompleteTextView = (AutoCompleteTextView) viewGroup
.getChildAt(i);
autoCompleteTextView.setFocusable(true);
autoCompleteTextView.requestFocus();
autoCompleteTextView.setFocusableInTouchMode(true);
}
}
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
// To prevent undesired "focus" and "blur" events during layout caused
// by ListView temporarily taking focus, we will disable focus events until
// layout has finished.
// First check for a quick exit. listView can be null, such as if window closing.
// Starting with API 18, calling requestFocus() will trigger another layout pass of the listview,
// resulting in an infinite loop. Here we check if the view is already focused, and stop the loop.
if (listView == null || (Build.VERSION.SDK_INT >= 18 && listView != null && !changed && viewFocused)) {
viewFocused = false;
super.onLayout(changed, left, top, right, bottom);
return;
}
OnFocusChangeListener focusListener = null;
View focusedView = listView.findFocus();
int cursorPosition = -1;
if (focusedView != null) {
OnFocusChangeListener listener = focusedView.getOnFocusChangeListener();
if (listener != null && listener instanceof TiUIView) {
//Before unfocus the current editText, store cursor position so
//we can restore it later
if (focusedView instanceof EditText) {
cursorPosition = ((EditText)focusedView).getSelectionStart();
}
focusedView.setOnFocusChangeListener(null);
focusListener = listener;
}
}
//We are temporarily going to block focus to descendants
//because LinearLayout on layout will try to find a focusable descendant
if (focusedView != null) {
listView.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
}
super.onLayout(changed, left, top, right, bottom);
//Now we reset the descendant focusability
listView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
TiViewProxy viewProxy = proxy;
if (viewProxy != null && viewProxy.hasListeners(TiC.EVENT_POST_LAYOUT)) {
viewProxy.fireEvent(TiC.EVENT_POST_LAYOUT, null);
}
// Layout is finished, re-enable focus events.
if (focusListener != null) {
// If the configuration changed, we manually fire the blur event
if (changed) {
focusedView.setOnFocusChangeListener(focusListener);
focusListener.onFocusChange(focusedView, false);
} else {
//Ok right now focus is with listView. So set it back to the focusedView
viewFocused = true;
focusedView.requestFocus();
focusedView.setOnFocusChangeListener(focusListener);
//Restore cursor position
if (cursorPosition != -1) {
((EditText)focusedView).setSelection(cursorPosition);
}
}
}
}
private void configureScaleAnimator(View v_account_container) {
View ib_account = v_account_container.findViewById(R.id.ib_account);
View tv_account_name = v_account_container.findViewById(R.id.tv_account_name);
ib_account.setOnFocusChangeListener(new OnFocusChangeAccountListener(tv_account_name));
}
/**
* Registers this listener to a view.
*
* @param view
* the view, not null.
* @return this
*/
public FocusVisual registerTo(final View view) {
view.setFocusable(true);
view.setOnFocusChangeListener(this);
return this;
}