Beginning with Android 3.0 (API level 11), the action bar appears at the top of an + * activity's window when the activity uses the system's {@link + * android.R.style#Theme_Holo Holo} theme (or one of its descendant themes), which is the default. + * You may otherwise add the action bar by calling {@link + * android.view.Window#requestFeature requestFeature(FEATURE_ACTION_BAR)} or by declaring it in a + * custom theme with the {@link android.R.styleable#Theme_windowActionBar windowActionBar} property. + *
By default, the action bar shows the application icon on + * the left, followed by the activity title. If your activity has an options menu, you can make + * select items accessible directly from the action bar as "action items". You can also + * modify various characteristics of the action bar or remove it completely.
+ *From your activity, you can retrieve an instance of {@link ActionBar} by calling {@link + * android.app.Activity#getActionBar getActionBar()}.
+ *In some cases, the action bar may be overlayed by another bar that enables contextual actions, + * using an {@link android.view.ActionMode}. For example, when the user selects one or more items in + * your activity, you can enable an action mode that offers actions specific to the selected + * items, with a UI that temporarily replaces the action bar. Although the UI may occupy the + * same space, the {@link android.view.ActionMode} APIs are distinct and independent from those for + * {@link ActionBar}. + *
For information about how to use the action bar, including how to add action items, navigation + * modes and more, read the Action + * Bar developer guide.
+ *Setting this option will implicitly enable interaction with the home/up + * button. See {@link #setHomeButtonEnabled(boolean)}. + * + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public static final int DISPLAY_HOME_AS_UP = android.app.ActionBar.DISPLAY_HOME_AS_UP; + + /** + * Show the activity title and subtitle, if present. + * + * @see #setTitle(CharSequence) + * @see #setTitle(int) + * @see #setSubtitle(CharSequence) + * @see #setSubtitle(int) + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public static final int DISPLAY_SHOW_TITLE = android.app.ActionBar.DISPLAY_SHOW_TITLE; + + /** + * Show the custom view if one has been set. + * @see #setCustomView(View) + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public static final int DISPLAY_SHOW_CUSTOM = android.app.ActionBar.DISPLAY_SHOW_CUSTOM; + + /** + * Set the action bar into custom navigation mode, supplying a view + * for custom navigation. + * + * Custom navigation views appear between the application icon and + * any action buttons and may use any space available there. Common + * use cases for custom navigation views might include an auto-suggesting + * address bar for a browser or other navigation mechanisms that do not + * translate well to provided navigation modes. + * + * @param view Custom navigation view to place in the ActionBar. + */ + public abstract void setCustomView(View view); + + /** + * Set the action bar into custom navigation mode, supplying a view + * for custom navigation. + * + *
Custom navigation views appear between the application icon and + * any action buttons and may use any space available there. Common + * use cases for custom navigation views might include an auto-suggesting + * address bar for a browser or other navigation mechanisms that do not + * translate well to provided navigation modes.
+ * + *The display option {@link #DISPLAY_SHOW_CUSTOM} must be set for + * the custom view to be displayed.
+ * + * @param view Custom navigation view to place in the ActionBar. + * @param layoutParams How this custom view should layout in the bar. + * + * @see #setDisplayOptions(int, int) + */ + public abstract void setCustomView(View view, LayoutParams layoutParams); + + /** + * Set the action bar into custom navigation mode, supplying a view + * for custom navigation. + * + *Custom navigation views appear between the application icon and + * any action buttons and may use any space available there. Common + * use cases for custom navigation views might include an auto-suggesting + * address bar for a browser or other navigation mechanisms that do not + * translate well to provided navigation modes.
+ * + *The display option {@link #DISPLAY_SHOW_CUSTOM} must be set for + * the custom view to be displayed.
+ * + * @param resId Resource ID of a layout to inflate into the ActionBar. + * + * @see #setDisplayOptions(int, int) + */ + public abstract void setCustomView(int resId); + + /** + * Set the icon to display in the 'home' section of the action bar. + * The action bar will use an icon specified by its style or the + * activity icon by default. + * + * Whether the home section shows an icon or logo is controlled + * by the display option {@link #DISPLAY_USE_LOGO}. + * + * @param resId Resource ID of a drawable to show as an icon. + * + * @see #setDisplayUseLogoEnabled(boolean) + * @see #setDisplayShowHomeEnabled(boolean) + */ + public abstract void setIcon(int resId); + + /** + * Set the icon to display in the 'home' section of the action bar. + * The action bar will use an icon specified by its style or the + * activity icon by default. + * + * Whether the home section shows an icon or logo is controlled + * by the display option {@link #DISPLAY_USE_LOGO}. + * + * @param icon Drawable to show as an icon. + * + * @see #setDisplayUseLogoEnabled(boolean) + * @see #setDisplayShowHomeEnabled(boolean) + */ + public abstract void setIcon(Drawable icon); + + /** + * Set the logo to display in the 'home' section of the action bar. + * The action bar will use a logo specified by its style or the + * activity logo by default. + * + * Whether the home section shows an icon or logo is controlled + * by the display option {@link #DISPLAY_USE_LOGO}. + * + * @param resId Resource ID of a drawable to show as a logo. + * + * @see #setDisplayUseLogoEnabled(boolean) + * @see #setDisplayShowHomeEnabled(boolean) + */ + public abstract void setLogo(int resId); + + /** + * Set the logo to display in the 'home' section of the action bar. + * The action bar will use a logo specified by its style or the + * activity logo by default. + * + * Whether the home section shows an icon or logo is controlled + * by the display option {@link #DISPLAY_USE_LOGO}. + * + * @param logo Drawable to show as a logo. + * + * @see #setDisplayUseLogoEnabled(boolean) + * @see #setDisplayShowHomeEnabled(boolean) + */ + public abstract void setLogo(Drawable logo); + + /** + * Set the adapter and navigation callback for list navigation mode. + * + * The supplied adapter will provide views for the expanded list as well as + * the currently selected item. (These may be displayed differently.) + * + * The supplied OnNavigationListener will alert the application when the user + * changes the current list selection. + * + * @param adapter An adapter that will provide views both to display + * the current navigation selection and populate views + * within the dropdown navigation menu. + * @param callback An OnNavigationListener that will receive events when the user + * selects a navigation item. + */ + public abstract void setListNavigationCallbacks(SpinnerAdapter adapter, + OnNavigationListener callback); + + /** + * Set the selected navigation item in list or tabbed navigation modes. + * + * @param position Position of the item to select. + */ + public abstract void setSelectedNavigationItem(int position); + + /** + * Get the position of the selected navigation item in list or tabbed navigation modes. + * + * @return Position of the selected item. + */ + public abstract int getSelectedNavigationIndex(); + + /** + * Get the number of navigation items present in the current navigation mode. + * + * @return Number of navigation items. + */ + public abstract int getNavigationItemCount(); + + /** + * Set the action bar's title. This will only be displayed if + * {@link #DISPLAY_SHOW_TITLE} is set. + * + * @param title Title to set + * + * @see #setTitle(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setTitle(CharSequence title); + + /** + * Set the action bar's title. This will only be displayed if + * {@link #DISPLAY_SHOW_TITLE} is set. + * + * @param resId Resource ID of title string to set + * + * @see #setTitle(CharSequence) + * @see #setDisplayOptions(int, int) + */ + public abstract void setTitle(int resId); + + /** + * Set the action bar's subtitle. This will only be displayed if + * {@link #DISPLAY_SHOW_TITLE} is set. Set to null to disable the + * subtitle entirely. + * + * @param subtitle Subtitle to set + * + * @see #setSubtitle(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setSubtitle(CharSequence subtitle); + + /** + * Set the action bar's subtitle. This will only be displayed if + * {@link #DISPLAY_SHOW_TITLE} is set. + * + * @param resId Resource ID of subtitle string to set + * + * @see #setSubtitle(CharSequence) + * @see #setDisplayOptions(int, int) + */ + public abstract void setSubtitle(int resId); + + /** + * Set display options. This changes all display option bits at once. To change + * a limited subset of display options, see {@link #setDisplayOptions(int, int)}. + * + * @param options A combination of the bits defined by the DISPLAY_ constants + * defined in ActionBar. + */ + public abstract void setDisplayOptions(int options); + + /** + * Set selected display options. Only the options specified by mask will be changed. + * To change all display option bits at once, see {@link #setDisplayOptions(int)}. + * + *Example: setDisplayOptions(0, DISPLAY_SHOW_HOME) will disable the + * {@link #DISPLAY_SHOW_HOME} option. + * setDisplayOptions(DISPLAY_SHOW_HOME, DISPLAY_SHOW_HOME | DISPLAY_USE_LOGO) + * will enable {@link #DISPLAY_SHOW_HOME} and disable {@link #DISPLAY_USE_LOGO}. + * + * @param options A combination of the bits defined by the DISPLAY_ constants + * defined in ActionBar. + * @param mask A bit mask declaring which display options should be changed. + */ + public abstract void setDisplayOptions(int options, int mask); + + /** + * Set whether to display the activity logo rather than the activity icon. + * A logo is often a wider, more detailed image. + * + *
To set several display options at once, see the setDisplayOptions methods. + * + * @param useLogo true to use the activity logo, false to use the activity icon. + * + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setDisplayUseLogoEnabled(boolean useLogo); + + /** + * Set whether to include the application home affordance in the action bar. + * Home is presented as either an activity icon or logo. + * + *
To set several display options at once, see the setDisplayOptions methods. + * + * @param showHome true to show home, false otherwise. + * + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setDisplayShowHomeEnabled(boolean showHome); + + /** + * Set whether home should be displayed as an "up" affordance. + * Set this to true if selecting "home" returns up by a single level in your UI + * rather than back to the top level or front page. + * + *
To set several display options at once, see the setDisplayOptions methods. + * + * @param showHomeAsUp true to show the user that selecting home will return one + * level up rather than to the top level of the app. + * + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setDisplayHomeAsUpEnabled(boolean showHomeAsUp); + + /** + * Set whether an activity title/subtitle should be displayed. + * + *
To set several display options at once, see the setDisplayOptions methods. + * + * @param showTitle true to display a title/subtitle if present. + * + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setDisplayShowTitleEnabled(boolean showTitle); + + /** + * Set whether a custom view should be displayed, if set. + * + *
To set several display options at once, see the setDisplayOptions methods. + * + * @param showCustom true if the currently set custom view should be displayed, false otherwise. + * + * @see #setDisplayOptions(int) + * @see #setDisplayOptions(int, int) + */ + public abstract void setDisplayShowCustomEnabled(boolean showCustom); + + /** + * Set the ActionBar's background. This will be used for the primary + * action bar. + * + * @param d Background drawable + * @see #setStackedBackgroundDrawable(Drawable) + * @see #setSplitBackgroundDrawable(Drawable) + */ + public abstract void setBackgroundDrawable(Drawable d); + + /** + * Set the ActionBar's stacked background. This will appear + * in the second row/stacked bar on some devices and configurations. + * + * @param d Background drawable for the stacked row + */ + public void setStackedBackgroundDrawable(Drawable d) { } + + /** + * Set the ActionBar's split background. This will appear in + * the split action bar containing menu-provided action buttons + * on some devices and configurations. + *
You can enable split action bar with {@link android.R.attr#uiOptions} + * + * @param d Background drawable for the split bar + */ + public void setSplitBackgroundDrawable(Drawable d) { } + + /** + * @return The current custom view. + */ + public abstract View getCustomView(); + + /** + * Returns the current ActionBar title in standard mode. + * Returns null if {@link #getNavigationMode()} would not return + * {@link #NAVIGATION_MODE_STANDARD}. + * + * @return The current ActionBar title or null. + */ + public abstract CharSequence getTitle(); + + /** + * Returns the current ActionBar subtitle in standard mode. + * Returns null if {@link #getNavigationMode()} would not return + * {@link #NAVIGATION_MODE_STANDARD}. + * + * @return The current ActionBar subtitle or null. + */ + public abstract CharSequence getSubtitle(); + + /** + * Returns the current navigation mode. The result will be one of: + *
Very often tabs will be used to switch between {@link Fragment} + * objects. Here is a typical implementation of such tabs:
+ * + * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentTabs.java + * complete} + * + * @return A new Tab + * + * @see #addTab(Tab) + */ + public abstract Tab newTab(); + + /** + * Add a tab for use in tabbed navigation mode. The tab will be added at the end of the list. + * If this is the first tab to be added it will become the selected tab. + * + * @param tab Tab to add + */ + public abstract void addTab(Tab tab); + + /** + * Add a tab for use in tabbed navigation mode. The tab will be added at the end of the list. + * + * @param tab Tab to add + * @param setSelected True if the added tab should become the selected tab. + */ + public abstract void addTab(Tab tab, boolean setSelected); + + /** + * Add a tab for use in tabbed navigation mode. The tab will be inserted at + *position. If this is the first tab to be added it will become
+ * the selected tab.
+ *
+ * @param tab The tab to add
+ * @param position The new position of the tab
+ */
+ public abstract void addTab(Tab tab, int position);
+
+ /**
+ * Add a tab for use in tabbed navigation mode. The tab will be insterted at
+ * position.
+ *
+ * @param tab The tab to add
+ * @param position The new position of the tab
+ * @param setSelected True if the added tab should become the selected tab.
+ */
+ public abstract void addTab(Tab tab, int position, boolean setSelected);
+
+ /**
+ * Remove a tab from the action bar. If the removed tab was selected it will be deselected
+ * and another tab will be selected if present.
+ *
+ * @param tab The tab to remove
+ */
+ public abstract void removeTab(Tab tab);
+
+ /**
+ * Remove a tab from the action bar. If the removed tab was selected it will be deselected
+ * and another tab will be selected if present.
+ *
+ * @param position Position of the tab to remove
+ */
+ public abstract void removeTabAt(int position);
+
+ /**
+ * Remove all tabs from the action bar and deselect the current tab.
+ */
+ public abstract void removeAllTabs();
+
+ /**
+ * Select the specified tab. If it is not a child of this action bar it will be added.
+ *
+ * Note: If you want to select by index, use {@link #setSelectedNavigationItem(int)}.
+ * + * @param tab Tab to select + */ + public abstract void selectTab(Tab tab); + + /** + * Returns the currently selected tab if in tabbed navigation mode and there is at least + * one tab present. + * + * @return The currently selected tab or null + */ + public abstract Tab getSelectedTab(); + + /** + * Returns the tab at the specified index. + * + * @param index Index value in the range 0-get + * @return + */ + public abstract Tab getTabAt(int index); + + /** + * Returns the number of tabs currently registered with the action bar. + * @return Tab count + */ + public abstract int getTabCount(); + + /** + * Retrieve the current height of the ActionBar. + * + * @return The ActionBar's height + */ + public abstract int getHeight(); + + /** + * Show the ActionBar if it is not currently showing. + * If the window hosting the ActionBar does not have the feature + * {@link Window#FEATURE_ACTION_BAR_OVERLAY} it will resize application + * content to fit the new space available. + */ + public abstract void show(); + + /** + * Hide the ActionBar if it is currently showing. + * If the window hosting the ActionBar does not have the feature + * {@link Window#FEATURE_ACTION_BAR_OVERLAY} it will resize application + * content to fit the new space available. + */ + public abstract void hide(); + + /** + * @returntrue if the ActionBar is showing, false otherwise.
+ */
+ public abstract boolean isShowing();
+
+ /**
+ * Add a listener that will respond to menu visibility change events.
+ *
+ * @param listener The new listener to add
+ */
+ public abstract void addOnMenuVisibilityListener(OnMenuVisibilityListener listener);
+
+ /**
+ * Remove a menu visibility listener. This listener will no longer receive menu
+ * visibility change events.
+ *
+ * @param listener A listener to remove that was previously added
+ */
+ public abstract void removeOnMenuVisibilityListener(OnMenuVisibilityListener listener);
+
+ /**
+ * Enable or disable the "home" button in the corner of the action bar. (Note that this
+ * is the application home/up affordance on the action bar, not the systemwide home
+ * button.)
+ *
+ * This defaults to true for packages targeting < API 14. For packages targeting + * API 14 or greater, the application should call this method to enable interaction + * with the home/up affordance. + * + *
Setting the {@link #DISPLAY_HOME_AS_UP} display option will automatically enable + * the home button. + * + * @param enabled true to enable the home button, false to disable the home button. + */ + public void setHomeButtonEnabled(boolean enabled) { } + + /** + * Returns a {@link Context} with an appropriate theme for creating views that + * will appear in the action bar. If you are inflating or instantiating custom views + * that will appear in an action bar, you should use the Context returned by this method. + * (This includes adapters used for list navigation mode.) + * This will ensure that views contrast properly against the action bar. + * + * @return A themed Context for creating views + */ + public Context getThemedContext() { return null; } + + /** + * Listener interface for ActionBar navigation events. + */ + public interface OnNavigationListener { + /** + * This method is called whenever a navigation item in your action bar + * is selected. + * + * @param itemPosition Position of the item clicked. + * @param itemId ID of the item clicked. + * @return True if the event was handled, false otherwise. + */ + public boolean onNavigationItemSelected(int itemPosition, long itemId); + } + + /** + * Listener for receiving events when action bar menus are shown or hidden. + */ + public interface OnMenuVisibilityListener { + /** + * Called when an action bar menu is shown or hidden. Applications may want to use + * this to tune auto-hiding behavior for the action bar or pause/resume video playback, + * gameplay, or other activity within the main content area. + * + * @param isVisible True if an action bar menu is now visible, false if no action bar + * menus are visible. + */ + public void onMenuVisibilityChanged(boolean isVisible); + } + + /** + * A tab in the action bar. + * + *
Tabs manage the hiding and showing of {@link Fragment}s. + */ + public static abstract class Tab { + /** + * An invalid position for a tab. + * + * @see #getPosition() + */ + public static final int INVALID_POSITION = -1; + + /** + * Return the current position of this tab in the action bar. + * + * @return Current position, or {@link #INVALID_POSITION} if this tab is not currently in + * the action bar. + */ + public abstract int getPosition(); + + /** + * Return the icon associated with this tab. + * + * @return The tab's icon + */ + public abstract Drawable getIcon(); + + /** + * Return the text of this tab. + * + * @return The tab's text + */ + public abstract CharSequence getText(); + + /** + * Set the icon displayed on this tab. + * + * @param icon The drawable to use as an icon + * @return The current instance for call chaining + */ + public abstract Tab setIcon(Drawable icon); + + /** + * Set the icon displayed on this tab. + * + * @param resId Resource ID referring to the drawable to use as an icon + * @return The current instance for call chaining + */ + public abstract Tab setIcon(int resId); + + /** + * Set the text displayed on this tab. Text may be truncated if there is not + * room to display the entire string. + * + * @param text The text to display + * @return The current instance for call chaining + */ + public abstract Tab setText(CharSequence text); + + /** + * Set the text displayed on this tab. Text may be truncated if there is not + * room to display the entire string. + * + * @param resId A resource ID referring to the text that should be displayed + * @return The current instance for call chaining + */ + public abstract Tab setText(int resId); + + /** + * Set a custom view to be used for this tab. This overrides values set by + * {@link #setText(CharSequence)} and {@link #setIcon(Drawable)}. + * + * @param view Custom view to be used as a tab. + * @return The current instance for call chaining + */ + public abstract Tab setCustomView(View view); + + /** + * Set a custom view to be used for this tab. This overrides values set by + * {@link #setText(CharSequence)} and {@link #setIcon(Drawable)}. + * + * @param layoutResId A layout resource to inflate and use as a custom tab view + * @return The current instance for call chaining + */ + public abstract Tab setCustomView(int layoutResId); + + /** + * Retrieve a previously set custom view for this tab. + * + * @return The custom view set by {@link #setCustomView(View)}. + */ + public abstract View getCustomView(); + + /** + * Give this Tab an arbitrary object to hold for later use. + * + * @param obj Object to store + * @return The current instance for call chaining + */ + public abstract Tab setTag(Object obj); + + /** + * @return This Tab's tag object. + */ + public abstract Object getTag(); + + /** + * Set the {@link TabListener} that will handle switching to and from this tab. + * All tabs must have a TabListener set before being added to the ActionBar. + * + * @param listener Listener to handle tab selection events + * @return The current instance for call chaining + */ + public abstract Tab setTabListener(TabListener listener); + + /** + * Select this tab. Only valid if the tab has been added to the action bar. + */ + public abstract void select(); + + /** + * Set a description of this tab's content for use in accessibility support. + * If no content description is provided the title will be used. + * + * @param resId A resource ID referring to the description text + * @return The current instance for call chaining + * @see #setContentDescription(CharSequence) + * @see #getContentDescription() + */ + public abstract Tab setContentDescription(int resId); + + /** + * Set a description of this tab's content for use in accessibility support. + * If no content description is provided the title will be used. + * + * @param contentDesc Description of this tab's content + * @return The current instance for call chaining + * @see #setContentDescription(int) + * @see #getContentDescription() + */ + public abstract Tab setContentDescription(CharSequence contentDesc); + + /** + * Gets a brief description of this tab's content for use in accessibility support. + * + * @return Description of this tab's content + * @see #setContentDescription(CharSequence) + * @see #setContentDescription(int) + */ + public abstract CharSequence getContentDescription(); + } + + /** + * Callback interface invoked when a tab is focused, unfocused, added, or removed. + */ + public interface TabListener { + /** + * Called when a tab enters the selected state. + * + * @param tab The tab that was selected + * @param ft A {@link FragmentTransaction} for queuing fragment operations to execute + * during a tab switch. The previous tab's unselect and this tab's select will be + * executed in a single transaction. This FragmentTransaction does not support + * being added to the back stack. + */ + public void onTabSelected(Tab tab, FragmentTransaction ft); + + /** + * Called when a tab exits the selected state. + * + * @param tab The tab that was unselected + * @param ft A {@link FragmentTransaction} for queuing fragment operations to execute + * during a tab switch. This tab's unselect and the newly selected tab's select + * will be executed in a single transaction. This FragmentTransaction does not + * support being added to the back stack. + */ + public void onTabUnselected(Tab tab, FragmentTransaction ft); + + /** + * Called when a tab that is already selected is chosen again by the user. + * Some applications may use this action to return to the top level of a category. + * + * @param tab The tab that was reselected. + * @param ft A {@link FragmentTransaction} for queuing fragment operations to execute + * once this method returns. This FragmentTransaction does not support + * being added to the back stack. + */ + public void onTabReselected(Tab tab, FragmentTransaction ft); + } + + /** + * Per-child layout information associated with action bar custom views. + * + * @attr ref android.R.styleable#ActionBar_LayoutParams_layout_gravity + */ + public static class LayoutParams extends MarginLayoutParams { + /** + * Gravity for the view associated with these LayoutParams. + * + * @see android.view.Gravity + */ + @ViewDebug.ExportedProperty(mapping = { + @ViewDebug.IntToString(from = -1, to = "NONE"), + @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), + @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), + @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), + @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), + @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), + @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), + @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), + @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), + @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), + @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), + @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") + }) + public int gravity = -1; + + public LayoutParams(Context c, AttributeSet attrs) { + super(c, attrs); + } + + public LayoutParams(int width, int height) { + super(width, height); + this.gravity = Gravity.CENTER_VERTICAL | Gravity.LEFT; + } + + public LayoutParams(int width, int height, int gravity) { + super(width, height); + this.gravity = gravity; + } + + public LayoutParams(int gravity) { + this(WRAP_CONTENT, FILL_PARENT, gravity); + } + + public LayoutParams(LayoutParams source) { + super(source); + + this.gravity = source.gravity; + } + + public LayoutParams(ViewGroup.LayoutParams source) { + super(source); + } + } +}