IT. Expert System.

Android Reference

ImageView

android.widget

Class ImageView

java.lang.Object
- android.view.View
- - android.widget.ImageView

All Implemented Interfaces:

Drawable.Callback, AccessibilityEventSource, KeyEvent.Callback

Direct Known Subclasses:

ImageButton, QuickContactBadge
```
public class ImageView
extends View
```
Displays an arbitrary image, such as an icon. The ImageView class can load images from various sources (such as resources or content providers), takes care of computing its measurement from the image so that it can be used in any layout manager, and provides various display options such as scaling and tinting.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class ImageView.ScaleType
Options for scaling the bounds of an image to the bounds of this view.
- Nested classes/interfaces inherited from class android.view.View
  View.AccessibilityDelegate, View.BaseSavedState, View.DragShadowBuilder, View.MeasureSpec, View.OnAttachStateChangeListener, View.OnClickListener, View.OnCreateContextMenuListener, View.OnDragListener, View.OnFocusChangeListener, View.OnGenericMotionListener, View.OnHoverListener, View.OnKeyListener, View.OnLayoutChangeListener, View.OnLongClickListener, View.OnSystemUiVisibilityChangeListener, View.OnTouchListener

Nested Classes
Modifier and Type	Class and Description
`static class`	`ImageView.ScaleType` Options for scaling the bounds of an image to the bounds of this view.

Field Summary
- Fields inherited from class android.view.View
  ALPHA, DEBUG_LAYOUT_PROPERTY, DRAG_FLAG_GLOBAL, DRAWING_CACHE_QUALITY_AUTO, DRAWING_CACHE_QUALITY_HIGH, DRAWING_CACHE_QUALITY_LOW, EMPTY_STATE_SET, ENABLED_FOCUSED_SELECTED_STATE_SET, ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, ENABLED_FOCUSED_STATE_SET, ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET, ENABLED_SELECTED_STATE_SET, ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET, ENABLED_STATE_SET, ENABLED_WINDOW_FOCUSED_STATE_SET, FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS, FIND_VIEWS_WITH_CONTENT_DESCRIPTION, FIND_VIEWS_WITH_TEXT, FOCUS_BACKWARD, FOCUS_DOWN, FOCUS_FORWARD, FOCUS_LEFT, FOCUS_RIGHT, FOCUS_UP, FOCUSABLES_ALL, FOCUSABLES_TOUCH_MODE, FOCUSED_SELECTED_STATE_SET, FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, FOCUSED_STATE_SET, FOCUSED_WINDOW_FOCUSED_STATE_SET, GONE, HAPTIC_FEEDBACK_ENABLED, IMPORTANT_FOR_ACCESSIBILITY_AUTO, IMPORTANT_FOR_ACCESSIBILITY_NO, IMPORTANT_FOR_ACCESSIBILITY_YES, INVISIBLE, KEEP_SCREEN_ON, LAYER_TYPE_HARDWARE, LAYER_TYPE_NONE, LAYER_TYPE_SOFTWARE, LAYOUT_DIRECTION_INHERIT, LAYOUT_DIRECTION_LOCALE, LAYOUT_DIRECTION_LTR, LAYOUT_DIRECTION_RTL, mBottom, mCachingFailed, mContext, mCurrentAnimation, MEASURED_HEIGHT_STATE_SHIFT, MEASURED_SIZE_MASK, MEASURED_STATE_MASK, MEASURED_STATE_TOO_SMALL, mInputEventConsistencyVerifier, mLayoutParams, mLeft, mPaddingBottom, mPaddingLeft, mPaddingRight, mPaddingTop, mParent, mRight, mScrollX, mScrollY, mTag, mTop, mUserPaddingBottom, mUserPaddingLeft, mUserPaddingRight, NO_ID, OVER_SCROLL_ALWAYS, OVER_SCROLL_IF_CONTENT_SCROLLS, OVER_SCROLL_NEVER, PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET, PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_FOCUSED_STATE_SET, PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_SELECTED_STATE_SET, PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_STATE_SET, PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET, PRESSED_FOCUSED_SELECTED_STATE_SET, PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_FOCUSED_STATE_SET, PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET, PRESSED_SELECTED_STATE_SET, PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_STATE_SET, PRESSED_WINDOW_FOCUSED_STATE_SET, PUBLIC_STATUS_BAR_VISIBILITY_MASK, ROTATION, ROTATION_X, ROTATION_Y, SCALE_X, SCALE_Y, SCREEN_STATE_OFF, SCREEN_STATE_ON, SCROLLBAR_POSITION_DEFAULT, SCROLLBAR_POSITION_LEFT, SCROLLBAR_POSITION_RIGHT, SCROLLBARS_INSIDE_INSET, SCROLLBARS_INSIDE_OVERLAY, SCROLLBARS_OUTSIDE_INSET, SCROLLBARS_OUTSIDE_OVERLAY, SELECTED_STATE_SET, SELECTED_WINDOW_FOCUSED_STATE_SET, SOUND_EFFECTS_ENABLED, STATUS_BAR_DISABLE_BACK, STATUS_BAR_DISABLE_CLOCK, STATUS_BAR_DISABLE_EXPAND, STATUS_BAR_DISABLE_HOME, STATUS_BAR_DISABLE_NOTIFICATION_ALERTS, STATUS_BAR_DISABLE_NOTIFICATION_ICONS, STATUS_BAR_DISABLE_NOTIFICATION_TICKER, STATUS_BAR_DISABLE_RECENT, STATUS_BAR_DISABLE_SEARCH, STATUS_BAR_DISABLE_SYSTEM_INFO, STATUS_BAR_HIDDEN, STATUS_BAR_VISIBLE, SYSTEM_UI_CLEARABLE_FLAGS, SYSTEM_UI_FLAG_FULLSCREEN, SYSTEM_UI_FLAG_HIDE_NAVIGATION, SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN, SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION, SYSTEM_UI_FLAG_LAYOUT_STABLE, SYSTEM_UI_FLAG_LOW_PROFILE, SYSTEM_UI_FLAG_VISIBLE, SYSTEM_UI_LAYOUT_FLAGS, TEXT_ALIGNMENT_CENTER, TEXT_ALIGNMENT_GRAVITY, TEXT_ALIGNMENT_INHERIT, TEXT_ALIGNMENT_TEXT_END, TEXT_ALIGNMENT_TEXT_START, TEXT_ALIGNMENT_VIEW_END, TEXT_ALIGNMENT_VIEW_START, TEXT_DIRECTION_ANY_RTL, TEXT_DIRECTION_FIRST_STRONG, TEXT_DIRECTION_INHERIT, TEXT_DIRECTION_LOCALE, TEXT_DIRECTION_LTR, TEXT_DIRECTION_RTL, TRANSLATION_X, TRANSLATION_Y, VIEW_LOG_TAG, VISIBLE, WINDOW_FOCUSED_STATE_SET, X, Y

Constructor Summary

Constructors
Constructor and Description
`ImageView(Context context)`
`ImageView(Context context, AttributeSet attrs)`
`ImageView(Context context, AttributeSet attrs, int defStyle)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clearColorFilter()`
`protected void`	`drawableStateChanged()` This function is called whenever the state of the view changes in such a way that it impacts the state of drawables being shown.
`boolean`	`getAdjustViewBounds()` True when ImageView is adjusting its bounds to preserve the aspect ratio of its drawable
`int`	`getBaseline()` Return the offset of the widget's text baseline from the widget's top boundary.
`boolean`	`getBaselineAlignBottom()` Return whether this view's baseline will be considered the bottom of the view.
`ColorFilter`	`getColorFilter()` Returns the active color filter for this ImageView.
`boolean`	`getCropToPadding()` Return whether this ImageView crops to padding.
`Drawable`	`getDrawable()` Return the view's drawable, or null if no drawable has been assigned.
`int`	`getImageAlpha()` Returns the alpha that will be applied to the drawable of this ImageView.
`Matrix`	`getImageMatrix()` Return the view's optional matrix.
`int`	`getMaxHeight()` The maximum height of this view.
`int`	`getMaxWidth()` The maximum width of this view.
`ImageView.ScaleType`	`getScaleType()` Return the current scale type in use by this ImageView.
`boolean`	`hasOverlappingRendering()` Returns whether this View has content which overlaps.
`void`	`invalidateDrawable(Drawable dr)` Invalidates the specified Drawable.
`void`	`jumpDrawablesToCurrentState()` Call `Drawable.jumpToCurrentState()` on all Drawable objects associated with this view.
`protected void`	`onAttachedToWindow()` This is called when the view is attached to a window.
`int[]`	`onCreateDrawableState(int extraSpace)` Generate the new `Drawable` state for this view.
`protected void`	`onDetachedFromWindow()` This is called when the view is detached from a window.
`protected void`	`onDraw(Canvas canvas)` Implement this to do your drawing.
`void`	`onInitializeAccessibilityEvent(AccessibilityEvent event)` Initializes an `AccessibilityEvent` with information about this View which is the event source.
`void`	`onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)` Initializes an `AccessibilityNodeInfo` with information about this view.
`protected void`	`onMeasure(int widthMeasureSpec, int heightMeasureSpec)` Measure the view and its content to determine the measured width and the measured height.
`void`	`onPopulateAccessibilityEvent(AccessibilityEvent event)` Called from `View.dispatchPopulateAccessibilityEvent(AccessibilityEvent)` giving a chance to this View to populate the accessibility event with its text content.
`void`	`setAdjustViewBounds(boolean adjustViewBounds)` Set this to true if you want the ImageView to adjust its bounds to preserve the aspect ratio of its drawable.
`void`	`setAlpha(int alpha)` Deprecated. use #setImageAlpha(int) instead
`void`	`setBaseline(int baseline)` Set the offset of the widget's text baseline from the widget's top boundary.
`void`	`setBaselineAlignBottom(boolean aligned)` Set whether to set the baseline of this view to the bottom of the view.
`void`	`setColorFilter(ColorFilter cf)` Apply an arbitrary colorfilter to the image.
`void`	`setColorFilter(int color)` Set a tinting option for the image.
`void`	`setColorFilter(int color, PorterDuff.Mode mode)` Set a tinting option for the image.
`void`	`setCropToPadding(boolean cropToPadding)` Sets whether this ImageView will crop to padding.
`protected boolean`	`setFrame(int l, int t, int r, int b)` Assign a size and position to this view.
`void`	`setImageAlpha(int alpha)` Sets the alpha value that should be applied to the image.
`void`	`setImageBitmap(Bitmap bm)` Sets a Bitmap as the content of this ImageView.
`void`	`setImageDrawable(Drawable drawable)` Sets a drawable as the content of this ImageView.
`void`	`setImageLevel(int level)` Sets the image level, when it is constructed from a `LevelListDrawable`.
`void`	`setImageMatrix(Matrix matrix)`
`void`	`setImageResource(int resId)` Sets a drawable as the content of this ImageView.
`void`	`setImageState(int[] state, boolean merge)`
`void`	`setImageURI(Uri uri)` Sets the content of this ImageView to the specified Uri.
`void`	`setMaxHeight(int maxHeight)` An optional argument to supply a maximum height for this view.
`void`	`setMaxWidth(int maxWidth)` An optional argument to supply a maximum width for this view.
`void`	`setScaleType(ImageView.ScaleType scaleType)` Controls how the image should be resized or moved to match the size of this ImageView.
`void`	`setSelected(boolean selected)` Changes the selection state of this view.
`void`	`setVisibility(int visibility)` Set the enabled state of this view.
`protected boolean`	`verifyDrawable(Drawable dr)` If your view subclass is displaying its own Drawable objects, it should override this function and return true for any Drawable it is displaying.

Methods inherited from class android.view.View
addChildrenForAccessibility, addFocusables, addFocusables, addOnAttachStateChangeListener, addOnLayoutChangeListener, addTouchables, animate, announceForAccessibility, applyDrawableToTransparentRegion, awakenScrollBars, awakenScrollBars, awakenScrollBars, bringToFront, buildDrawingCache, buildDrawingCache, buildLayer, callOnClick, cancelLongPress, canHaveDisplayList, canResolveLayoutDirection, canScrollHorizontally, canScrollVertically, checkInputConnectionProxy, clearAccessibilityFocus, clearAnimation, clearFocus, combineMeasuredStates, computeHorizontalScrollExtent, computeHorizontalScrollOffset, computeHorizontalScrollRange, computeOpaqueFlags, computeScroll, computeVerticalScrollExtent, computeVerticalScrollOffset, computeVerticalScrollRange, createAccessibilityNodeInfo, createContextMenu, debug, debug, debugIndent, destroyDrawingCache, destroyHardwareResources, dispatchConfigurationChanged, dispatchDisplayHint, dispatchDragEvent, dispatchDraw, dispatchFinishTemporaryDetach, dispatchGenericFocusedEvent, dispatchGenericMotionEvent, dispatchGenericPointerEvent, dispatchGetDisplayList, dispatchHoverEvent, dispatchKeyEvent, dispatchKeyEventPreIme, dispatchKeyShortcutEvent, dispatchPointerEvent, dispatchPopulateAccessibilityEvent, dispatchRestoreInstanceState, dispatchSaveInstanceState, dispatchSetActivated, dispatchSetPressed, dispatchSetSelected, dispatchStartTemporaryDetach, dispatchSystemUiVisibilityChanged, dispatchTouchEvent, dispatchTrackballEvent, dispatchUnhandledMove, dispatchVisibilityChanged, dispatchWindowFocusChanged, dispatchWindowSystemUiVisiblityChanged, dispatchWindowVisibilityChanged, draw, findFocus, findViewById, findViewByPredicate, findViewByPredicateInsideOut, findViewByPredicateTraversal, findViewsWithText, findViewTraversal, findViewWithTag, findViewWithTagTraversal, fitsSystemWindows, fitSystemWindows, focusSearch, forceLayout, gatherTransparentRegion, generateViewId, getAccessibilityCursorPosition, getAccessibilityDelegate, getAccessibilityNodeProvider, getAccessibilityViewId, getAccessibilityWindowId, getAlpha, getAnimation, getApplicationWindowToken, getBackground, getBottom, getBottomFadingEdgeStrength, getBottomPaddingOffset, getCameraDistance, getContentDescription, getContext, getContextMenuInfo, getDefaultSize, getDisplay, getDisplayList, getDrawableState, getDrawingCache, getDrawingCache, getDrawingCacheBackgroundColor, getDrawingCacheQuality, getDrawingRect, getDrawingTime, getFadeHeight, getFadeTop, getFilterTouchesWhenObscured, getFitsSystemWindows, getFocusables, getFocusedRect, getGlobalVisibleRect, getGlobalVisibleRect, getHandler, getHardwareRenderer, getHeight, getHitRect, getHorizontalFadingEdgeLength, getHorizontalScrollbarHeight, getHorizontalScrollFactor, getId, getImportantForAccessibility, getIterableTextForAccessibility, getIteratorForGranularity, getKeepScreenOn, getKeyDispatcherState, getLabelFor, getLayerType, getLayoutDirection, getLayoutParams, getLeft, getLeftFadingEdgeStrength, getLeftPaddingOffset, getLocalVisibleRect, getLocationInWindow, getLocationOnScreen, getMatrix, getMeasuredHeight, getMeasuredHeightAndState, getMeasuredState, getMeasuredWidth, getMeasuredWidthAndState, getMinimumHeight, getMinimumWidth, getNextFocusDownId, getNextFocusForwardId, getNextFocusLeftId, getNextFocusRightId, getNextFocusUpId, getOnFocusChangeListener, getOpticalInsets, getOverScrollMode, getPaddingBottom, getPaddingEnd, getPaddingLeft, getPaddingRight, getPaddingStart, getPaddingTop, getParent, getParentForAccessibility, getPivotX, getPivotY, getRawLayoutDirection, getRawTextAlignment, getRawTextDirection, getResources, getRight, getRightFadingEdgeStrength, getRightPaddingOffset, getRootView, getRotation, getRotationX, getRotationY, getScaleX, getScaleY, getScrollBarDefaultDelayBeforeFade, getScrollBarFadeDuration, getScrollBarSize, getScrollBarStyle, getScrollX, getScrollY, getSolidColor, getSuggestedMinimumHeight, getSuggestedMinimumWidth, getSystemUiVisibility, getTag, getTag, getTextAlignment, getTextDirection, getTop, getTopFadingEdgeStrength, getTopPaddingOffset, getTouchables, getTouchDelegate, getTranslationX, getTranslationY, getVerticalFadingEdgeLength, getVerticalScrollbarPosition, getVerticalScrollbarWidth, getVerticalScrollFactor, getViewRootImpl, getViewTreeObserver, getVisibility, getWidth, getWindowAttachCount, getWindowSystemUiVisibility, getWindowToken, getWindowVisibility, getWindowVisibleDisplayFrame, getX, getY, hackTurnOffWindowResizeAnim, hasFocus, hasFocusable, hasHoveredChild, hasOnClickListeners, hasOpaqueScrollbars, hasTransientState, hasWindowFocus, includeForAccessibility, inflate, initializeFadingEdge, initializeScrollbars, internalSetPadding, invalidate, invalidate, invalidate, invalidateParentCaches, invalidateParentIfNeeded, isActionableForAccessibility, isActivated, isClickable, isDirty, isDrawingCacheEnabled, isDuplicateParentStateEnabled, isEnabled, isFocusable, isFocusableInTouchMode, isFocused, isHapticFeedbackEnabled, isHardwareAccelerated, isHorizontalFadingEdgeEnabled, isHorizontalScrollBarEnabled, isHovered, isImportantForAccessibility, isInEditMode, isInScrollingContainer, isInTouchMode, isLayoutDirectionInherited, isLayoutRequested, isLayoutRtl, isLongClickable, isOpaque, isPaddingOffsetRequired, isPaddingRelative, isPressed, isRootNamespace, isSaveEnabled, isSaveFromParentEnabled, isScrollbarFadingEnabled, isScrollContainer, isSelected, isShown, isSoundEffectsEnabled, isTextAlignmentInherited, isTextDirectionInherited, isVerticalFadingEdgeEnabled, isVerticalScrollBarEnabled, isVerticalScrollBarHidden, isVisibleToUser, isVisibleToUser, layout, makeOptionalFitsSystemWindows, measure, mergeDrawableStates, notifyAccessibilityStateChanged, offsetLeftAndRight, offsetTopAndBottom, onAnimationEnd, onAnimationStart, onCheckIsTextEditor, onCloseSystemDialogs, onConfigurationChanged, onCreateContextMenu, onCreateInputConnection, onDisplayHint, onDragEvent, onDrawHorizontalScrollBar, onDrawScrollBars, onDrawVerticalScrollBar, onFilterTouchEventForSecurity, onFinishInflate, onFinishTemporaryDetach, onFocusChanged, onFocusLost, onGenericMotionEvent, onHoverChanged, onHoverEvent, onKeyDown, onKeyLongPress, onKeyMultiple, onKeyPreIme, onKeyShortcut, onKeyUp, onLayout, onOverScrolled, onResolveDrawables, onRestoreInstanceState, onRtlPropertiesChanged, onSaveInstanceState, onScreenStateChanged, onScrollChanged, onSetAlpha, onSizeChanged, onStartTemporaryDetach, onTouchEvent, onTrackballEvent, onVisibilityChanged, onWindowFocusChanged, onWindowSystemUiVisibilityChanged, onWindowVisibilityChanged, outputDirtyFlags, overScrollBy, performAccessibilityAction, performButtonActionOnTouchDown, performClick, performHapticFeedback, performHapticFeedback, performLongClick, playSoundEffect, post, postDelayed, postInvalidate, postInvalidate, postInvalidateDelayed, postInvalidateDelayed, postInvalidateOnAnimation, postInvalidateOnAnimation, postOnAnimation, postOnAnimationDelayed, recomputePadding, refreshDrawableState, removeCallbacks, removeOnAttachStateChangeListener, removeOnLayoutChangeListener, requestAccessibilityFocus, requestFitSystemWindows, requestFocus, requestFocus, requestFocus, requestFocusFromTouch, requestLayout, requestRectangleOnScreen, requestRectangleOnScreen, resetAccessibilityStateChanged, resetPaddingToInitialValues, resetResolvedDrawables, resetResolvedLayoutDirection, resetResolvedPadding, resetResolvedTextAlignment, resetResolvedTextDirection, resetRtlProperties, resolveDrawables, resolveLayoutDirection, resolveLayoutParams, resolvePadding, resolveRtlPropertiesIfNeeded, resolveSize, resolveSizeAndState, resolveTextAlignment, resolveTextDirection, restoreHierarchyState, saveHierarchyState, scheduleDrawable, scrollBy, scrollTo, sendAccessibilityEvent, sendAccessibilityEventUnchecked, setAccessibilityCursorPosition, setAccessibilityDelegate, setActivated, setAlpha, setAnimation, setBackground, setBackgroundColor, setBackgroundDrawable, setBackgroundResource, setBottom, setCameraDistance, setClickable, setContentDescription, setDisabledSystemUiVisibility, setDrawingCacheBackgroundColor, setDrawingCacheEnabled, setDrawingCacheQuality, setDuplicateParentStateEnabled, setEnabled, setFadingEdgeLength, setFilterTouchesWhenObscured, setFitsSystemWindows, setFocusable, setFocusableInTouchMode, setHapticFeedbackEnabled, setHasTransientState, setHorizontalFadingEdgeEnabled, setHorizontalScrollBarEnabled, setHovered, setId, setImportantForAccessibility, setIsRootNamespace, setKeepScreenOn, setLabelFor, setLayerPaint, setLayerType, setLayoutDirection, setLayoutInsets, setLayoutParams, setLeft, setLongClickable, setMeasuredDimension, setMinimumHeight, setMinimumWidth, setNextFocusDownId, setNextFocusForwardId, setNextFocusLeftId, setNextFocusRightId, setNextFocusUpId, setOnClickListener, setOnCreateContextMenuListener, setOnDragListener, setOnFocusChangeListener, setOnGenericMotionListener, setOnHoverListener, setOnKeyListener, setOnLongClickListener, setOnSystemUiVisibilityChangeListener, setOnTouchListener, setOverScrollMode, setPadding, setPaddingRelative, setPivotX, setPivotY, setPressed, setRight, setRotation, setRotationX, setRotationY, setSaveEnabled, setSaveFromParentEnabled, setScaleX, setScaleY, setScrollBarDefaultDelayBeforeFade, setScrollBarFadeDuration, setScrollbarFadingEnabled, setScrollBarSize, setScrollBarStyle, setScrollContainer, setScrollX, setScrollY, setSoundEffectsEnabled, setSystemUiVisibility, setTag, setTag, setTagInternal, setTextAlignment, setTextDirection, setTop, setTouchDelegate, setTranslationX, setTranslationY, setVerticalFadingEdgeEnabled, setVerticalScrollBarEnabled, setVerticalScrollbarPosition, setWillNotCacheDrawing, setWillNotDraw, setX, setY, showContextMenu, showContextMenu, startActionMode, startAnimation, startDrag, toString, unscheduleDrawable, unscheduleDrawable, willNotCacheDrawing, willNotDraw

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ImageView
```
public ImageView(Context context)
```
  - ImageView
```
public ImageView(Context context,
         AttributeSet attrs)
```
  - ImageView
```
public ImageView(Context context,
         AttributeSet attrs,
         int defStyle)
```
- Method Detail
  - verifyDrawable
```
protected boolean verifyDrawable(Drawable dr)
```
    Description copied from class: View
    
    If your view subclass is displaying its own Drawable objects, it should override this function and return true for any Drawable it is displaying. This allows animations for those drawables to be scheduled.
    Be sure to call through to the super class when overriding this function.
    
    Overrides:
    
    verifyDrawable in class View
    
    Parameters:
    dr - The Drawable to verify. Return true if it is one you are displaying, else return the result of calling through to the super class.
    
    Returns:
    boolean If true than the Drawable is being displayed in the view; else false and it is not allowed to animate.
    See Also:
    View.unscheduleDrawable(android.graphics.drawable.Drawable), View.drawableStateChanged()
  - jumpDrawablesToCurrentState
```
public void jumpDrawablesToCurrentState()
```
    Description copied from class: View
    
    Call Drawable.jumpToCurrentState() on all Drawable objects associated with this view.
    
    Overrides:
    
    jumpDrawablesToCurrentState in class View
  - invalidateDrawable
```
public void invalidateDrawable(Drawable dr)
```
    Description copied from class: View
    
    Invalidates the specified Drawable.
    
    Specified by:
    
    invalidateDrawable in interface Drawable.Callback
    
    Overrides:
    
    invalidateDrawable in class View
    
    Parameters:
    dr - the drawable to invalidate
  - hasOverlappingRendering
```
public boolean hasOverlappingRendering()
```
    Description copied from class: View
    
    Returns whether this View has content which overlaps. This function, intended to be overridden by specific View types, is an optimization when alpha is set on a view. If rendering overlaps in a view with alpha < 1, that view is drawn to an offscreen buffer and then composited it into place, which can be expensive. if the view has no overlapping rendering, the view can draw each primitive with the appropriate alpha value directly. an example of overlapping rendering is a textview with a background image, such as a button. an example of non-overlapping rendering is a textview with no background, or an imageview with only the foreground image. the default implementation returns true; subclasses should override if they have cases which can be optimized.
    
    Overrides:
    
    hasOverlappingRendering in class View
    
    Returns:
    true if the content in this view might overlap, false otherwise.
  - onPopulateAccessibilityEvent
```
public void onPopulateAccessibilityEvent(AccessibilityEvent event)
```
    Description copied from class: View
    Called from View.dispatchPopulateAccessibilityEvent(AccessibilityEvent) giving a chance to this View to populate the accessibility event with its text content. While this method is free to modify event attributes other than text content, doing so should normally be performed in View.onInitializeAccessibilityEvent(AccessibilityEvent).
    Example: Adding formatted date string to an accessibility event in addition to the text added by the super implementation:
```
 public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
     super.onPopulateAccessibilityEvent(event);
     final int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_WEEKDAY;
     String selectedDateUtterance = DateUtils.formatDateTime(mContext,
         mCurrentDate.getTimeInMillis(), flags);
     event.getText().add(selectedDateUtterance);
 }
```
    If an View.AccessibilityDelegate has been specified via calling View.setAccessibilityDelegate(AccessibilityDelegate) its View.AccessibilityDelegate.onPopulateAccessibilityEvent(View, AccessibilityEvent) is responsible for handling this call.
    
    Note: Always call the super implementation before adding information to the event, in case the default implementation has basic information to add.
    Overrides:
    
    onPopulateAccessibilityEvent in class View
    
    Parameters:
    event - The accessibility event which to populate.
    See Also:
    View.sendAccessibilityEvent(int), View.dispatchPopulateAccessibilityEvent(AccessibilityEvent)
  - getAdjustViewBounds
```
public boolean getAdjustViewBounds()
```
    True when ImageView is adjusting its bounds to preserve the aspect ratio of its drawable
    
    Returns:
    whether to adjust the bounds of this view to presrve the original aspect ratio of the drawable
    See Also:
    setAdjustViewBounds(boolean)
  - setAdjustViewBounds
```
public void setAdjustViewBounds(boolean adjustViewBounds)
```
    Set this to true if you want the ImageView to adjust its bounds to preserve the aspect ratio of its drawable.
    
    Parameters:
    adjustViewBounds - Whether to adjust the bounds of this view to presrve the original aspect ratio of the drawable
    See Also:
    getAdjustViewBounds()
  - getMaxWidth
```
public int getMaxWidth()
```
    The maximum width of this view.
    
    Returns:
    The maximum width of this view
    See Also:
    setMaxWidth(int)
  - setMaxWidth
```
public void setMaxWidth(int maxWidth)
```
    An optional argument to supply a maximum width for this view. Only valid if setAdjustViewBounds(boolean) has been set to true. To set an image to be a maximum of 100 x 100 while preserving the original aspect ratio, do the following: 1) set adjustViewBounds to true 2) set maxWidth and maxHeight to 100 3) set the height and width layout params to WRAP_CONTENT.
    Note that this view could be still smaller than 100 x 100 using this approach if the original image is small. To set an image to a fixed size, specify that size in the layout params and then use setScaleType(android.widget.ImageView.ScaleType) to determine how to fit the image within the bounds.
    
    Parameters:
    maxWidth - maximum width for this view
    See Also:
    getMaxWidth()
  - getMaxHeight
```
public int getMaxHeight()
```
    The maximum height of this view.
    
    Returns:
    The maximum height of this view
    See Also:
    setMaxHeight(int)
  - setMaxHeight
```
public void setMaxHeight(int maxHeight)
```
    An optional argument to supply a maximum height for this view. Only valid if setAdjustViewBounds(boolean) has been set to true. To set an image to be a maximum of 100 x 100 while preserving the original aspect ratio, do the following: 1) set adjustViewBounds to true 2) set maxWidth and maxHeight to 100 3) set the height and width layout params to WRAP_CONTENT.
    Note that this view could be still smaller than 100 x 100 using this approach if the original image is small. To set an image to a fixed size, specify that size in the layout params and then use setScaleType(android.widget.ImageView.ScaleType) to determine how to fit the image within the bounds.
    
    Parameters:
    maxHeight - maximum height for this view
    See Also:
    getMaxHeight()
  - getDrawable
```
public Drawable getDrawable()
```
    Return the view's drawable, or null if no drawable has been assigned.
  - setImageResource
```
public void setImageResource(int resId)
```
    Sets a drawable as the content of this ImageView.
    This does Bitmap reading and decoding on the UI thread, which can cause a latency hiccup. If that's a concern, consider using setImageDrawable(android.graphics.drawable.Drawable) or setImageBitmap(android.graphics.Bitmap) and BitmapFactory instead.
    
    Parameters:
    resId - the resource identifier of the the drawable
  - setImageURI
```
public void setImageURI(Uri uri)
```
    Sets the content of this ImageView to the specified Uri.
    This does Bitmap reading and decoding on the UI thread, which can cause a latency hiccup. If that's a concern, consider using setImageDrawable(android.graphics.drawable.Drawable) or setImageBitmap(android.graphics.Bitmap) and BitmapFactory instead.
    
    Parameters:
    uri - The Uri of an image
  - setImageDrawable
```
public void setImageDrawable(Drawable drawable)
```
    Sets a drawable as the content of this ImageView.
    
    Parameters:
    drawable - The drawable to set
  - setImageBitmap
```
public void setImageBitmap(Bitmap bm)
```
    Sets a Bitmap as the content of this ImageView.
    
    Parameters:
    bm - The bitmap to set
  - setImageState
```
public void setImageState(int[] state,
                 boolean merge)
```
  - setSelected
```
public void setSelected(boolean selected)
```
    Description copied from class: View
    
    Changes the selection state of this view. A view can be selected or not. Note that selection is not the same as focus. Views are typically selected in the context of an AdapterView like ListView or GridView; the selected view is the view that is highlighted.
    
    Overrides:
    
    setSelected in class View
    
    Parameters:
    selected - true if the view must be selected, false otherwise
  - setImageLevel
```
public void setImageLevel(int level)
```
    Sets the image level, when it is constructed from a LevelListDrawable.
    
    Parameters:
    level - The new level for the image.
  - setScaleType
```
public void setScaleType(ImageView.ScaleType scaleType)
```
    Controls how the image should be resized or moved to match the size of this ImageView.
    
    Parameters:
    scaleType - The desired scaling mode.
  - getScaleType
```
public ImageView.ScaleType getScaleType()
```
    Return the current scale type in use by this ImageView.
    
    See Also:
    ImageView.ScaleType
  - getImageMatrix
```
public Matrix getImageMatrix()
```
    Return the view's optional matrix. This is applied to the view's drawable when it is drawn. If there is not matrix, this method will return null. Do not change this matrix in place. If you want a different matrix applied to the drawable, be sure to call setImageMatrix().
  - setImageMatrix
```
public void setImageMatrix(Matrix matrix)
```
  - getCropToPadding
```
public boolean getCropToPadding()
```
    Return whether this ImageView crops to padding.
    
    Returns:
    whether this ImageView crops to padding
    See Also:
    setCropToPadding(boolean)
  - setCropToPadding
```
public void setCropToPadding(boolean cropToPadding)
```
    Sets whether this ImageView will crop to padding.
    
    Parameters:
    cropToPadding - whether this ImageView will crop to padding
    See Also:
    getCropToPadding()
  - onCreateDrawableState
```
public int[] onCreateDrawableState(int extraSpace)
```
    Description copied from class: View
    
    Generate the new Drawable state for this view. This is called by the view system when the cached Drawable state is determined to be invalid. To retrieve the current state, you should use View.getDrawableState().
    
    Overrides:
    
    onCreateDrawableState in class View
    
    Parameters:
    extraSpace - if non-zero, this is the number of extra entries you would like in the returned array in which you can place your own states.
    
    Returns:
    Returns an array holding the current Drawable state of the view.
    See Also:
    View.mergeDrawableStates(int[], int[])
  - onMeasure
```
protected void onMeasure(int widthMeasureSpec,
             int heightMeasureSpec)
```
    Description copied from class: View
    
    Measure the view and its content to determine the measured width and the measured height. This method is invoked by View.measure(int, int) and should be overriden by subclasses to provide accurate and efficient measurement of their contents.
    
    CONTRACT: When overriding this method, you must call View.setMeasuredDimension(int, int) to store the measured width and height of this view. Failure to do so will trigger an IllegalStateException, thrown by View.measure(int, int). Calling the superclass' View.onMeasure(int, int) is a valid use.
    
    The base class implementation of measure defaults to the background size, unless a larger size is allowed by the MeasureSpec. Subclasses should override View.onMeasure(int, int) to provide better measurements of their content.
    
    If this method is overridden, it is the subclass's responsibility to make sure the measured height and width are at least the view's minimum height and width (View.getSuggestedMinimumHeight() and View.getSuggestedMinimumWidth()).
    
    Overrides:
    
    onMeasure in class View
    
    Parameters:
    widthMeasureSpec - horizontal space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.
    heightMeasureSpec - vertical space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.
    See Also:
    View.getMeasuredWidth(), View.getMeasuredHeight(), View.setMeasuredDimension(int, int), View.getSuggestedMinimumHeight(), View.getSuggestedMinimumWidth(), View.MeasureSpec.getMode(int), View.MeasureSpec.getSize(int)
  - setFrame
```
protected boolean setFrame(int l,
               int t,
               int r,
               int b)
```
    Description copied from class: View
    
    Assign a size and position to this view. This is called from layout.
    
    Overrides:
    
    setFrame in class View
    
    Parameters:
    l - Left position, relative to parent
    t - Top position, relative to parent
    r - Right position, relative to parent
    b - Bottom position, relative to parent
    
    Returns:
    true if the new size and position are different than the previous ones
  - drawableStateChanged
```
protected void drawableStateChanged()
```
    Description copied from class: View
    
    This function is called whenever the state of the view changes in such a way that it impacts the state of drawables being shown.
    Be sure to call through to the superclass when overriding this function.
    
    Overrides:
    
    drawableStateChanged in class View
    
    See Also:
    Drawable.setState(int[])
  - onDraw
```
protected void onDraw(Canvas canvas)
```
    Description copied from class: View
    
    Implement this to do your drawing.
    
    Overrides:
    
    onDraw in class View
    
    Parameters:
    canvas - the canvas on which the background will be drawn
  - getBaseline
```
public int getBaseline()
```
    Return the offset of the widget's text baseline from the widget's top boundary.
    
    Overrides:
    
    getBaseline in class View
    
    Returns:
    the offset of the baseline within the widget's bounds or -1 if baseline alignment is not supported.
  - setBaseline
```
public void setBaseline(int baseline)
```
    Set the offset of the widget's text baseline from the widget's top boundary. This value is overridden by the setBaselineAlignBottom(boolean) property.
    
    Parameters:
    baseline - The baseline to use, or -1 if none is to be provided.
    See Also:
    setBaseline(int)
  - setBaselineAlignBottom
```
public void setBaselineAlignBottom(boolean aligned)
```
    Set whether to set the baseline of this view to the bottom of the view. Setting this value overrides any calls to setBaseline.
    
    Parameters:
    aligned - If true, the image view will be baseline aligned with based on its bottom edge.
  - getBaselineAlignBottom
```
public boolean getBaselineAlignBottom()
```
    Return whether this view's baseline will be considered the bottom of the view.
    
    See Also:
    setBaselineAlignBottom(boolean)
  - setColorFilter
```
public final void setColorFilter(int color,
                  PorterDuff.Mode mode)
```
    Set a tinting option for the image.
    
    Parameters:
    color - Color tint to apply.
    mode - How to apply the color. The standard mode is PorterDuff.Mode#SRC_ATOP
  - setColorFilter
```
public final void setColorFilter(int color)
```
    Set a tinting option for the image. Assumes PorterDuff.Mode#SRC_ATOP blending mode.
    
    Parameters:
    color - Color tint to apply.
  - clearColorFilter
```
public final void clearColorFilter()
```
  - getColorFilter
```
public ColorFilter getColorFilter()
```
    Returns the active color filter for this ImageView.
    
    Returns:
    the active color filter for this ImageView
    See Also:
    setColorFilter(android.graphics.ColorFilter)
  - setColorFilter
```
public void setColorFilter(ColorFilter cf)
```
    Apply an arbitrary colorfilter to the image.
    
    Parameters:
    cf - the colorfilter to apply (may be null)
    See Also:
    getColorFilter()
  - getImageAlpha
```
public int getImageAlpha()
```
    Returns the alpha that will be applied to the drawable of this ImageView.
    
    Returns:
    the alpha that will be applied to the drawable of this ImageView
    See Also:
    setImageAlpha(int)
  - setImageAlpha
```
public void setImageAlpha(int alpha)
```
    Sets the alpha value that should be applied to the image.
    
    Parameters:
    alpha - the alpha value that should be applied to the image
    See Also:
    getImageAlpha()
  - setAlpha
```
@Deprecated
public void setAlpha(int alpha)
```
    Deprecated. use #setImageAlpha(int) instead
    
    Sets the alpha value that should be applied to the image.
    
    Parameters:
    alpha - the alpha value that should be applied to the image
  - setVisibility
```
public void setVisibility(int visibility)
```
    Description copied from class: View
    
    Set the enabled state of this view.
    
    Overrides:
    
    setVisibility in class View
    
    Parameters:
    visibility - One of View.VISIBLE, View.INVISIBLE, or View.GONE.
  - onAttachedToWindow
```
protected void onAttachedToWindow()
```
    Description copied from class: View
    
    This is called when the view is attached to a window. At this point it has a Surface and will start drawing. Note that this function is guaranteed to be called before View.onDraw(android.graphics.Canvas), however it may be called any time before the first onDraw -- including before or after View.onMeasure(int, int).
    
    Overrides:
    
    onAttachedToWindow in class View
    
    See Also:
    View.onDetachedFromWindow()
  - onDetachedFromWindow
```
protected void onDetachedFromWindow()
```
    Description copied from class: View
    
    This is called when the view is detached from a window. At this point it no longer has a surface for drawing.
    
    Overrides:
    
    onDetachedFromWindow in class View
    
    See Also:
    View.onAttachedToWindow()
  - onInitializeAccessibilityEvent
```
public void onInitializeAccessibilityEvent(AccessibilityEvent event)
```
    Description copied from class: View
    Initializes an AccessibilityEvent with information about this View which is the event source. In other words, the source of an accessibility event is the view whose state change triggered firing the event.
    Example: Setting the password property of an event in addition to properties set by the super implementation:
```
 public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
     super.onInitializeAccessibilityEvent(event);
     event.setPassword(true);
 }
```
    If an View.AccessibilityDelegate has been specified via calling View.setAccessibilityDelegate(AccessibilityDelegate) its View.AccessibilityDelegate.onInitializeAccessibilityEvent(View, AccessibilityEvent) is responsible for handling this call.
    
    Note: Always call the super implementation before adding information to the event, in case the default implementation has basic information to add.
    Overrides:
    
    onInitializeAccessibilityEvent in class View
    
    Parameters:
    event - The event to initialize.
    See Also:
    View.sendAccessibilityEvent(int), View.dispatchPopulateAccessibilityEvent(AccessibilityEvent)
  - onInitializeAccessibilityNodeInfo
```
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)
```
    Description copied from class: View
    Initializes an AccessibilityNodeInfo with information about this view. The base implementation sets:
    Subclasses should override this method, call the super implementation, and set additional attributes.
    
    If an View.AccessibilityDelegate has been specified via calling View.setAccessibilityDelegate(AccessibilityDelegate) its View.AccessibilityDelegate.onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfo) is responsible for handling this call.
    Overrides:
    
    onInitializeAccessibilityNodeInfo in class View
    
    Parameters:
    info - The instance to initialize.

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Android Reference

ImageView

Class ImageView

Nested Class Summary

Nested classes/interfaces inherited from class android.view.View

Field Summary

Fields inherited from class android.view.View

Constructor Summary

Method Summary

Methods inherited from class android.view.View

Methods inherited from class java.lang.Object

Constructor Detail

ImageView

ImageView

ImageView

Method Detail

verifyDrawable

jumpDrawablesToCurrentState

invalidateDrawable

hasOverlappingRendering

onPopulateAccessibilityEvent

getAdjustViewBounds

setAdjustViewBounds

getMaxWidth

setMaxWidth

getMaxHeight

setMaxHeight

getDrawable

setImageResource

setImageURI

setImageDrawable

setImageBitmap

setImageState

setSelected

setImageLevel

setScaleType

getScaleType

getImageMatrix

setImageMatrix

getCropToPadding

setCropToPadding

onCreateDrawableState

onMeasure

setFrame

drawableStateChanged

onDraw

getBaseline

setBaseline

setBaselineAlignBottom

getBaselineAlignBottom

setColorFilter

setColorFilter

clearColorFilter

getColorFilter

setColorFilter

getImageAlpha

setImageAlpha

setAlpha

setVisibility

onAttachedToWindow

onDetachedFromWindow

onInitializeAccessibilityEvent

onInitializeAccessibilityNodeInfo

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#