imageview,imageswitcher显示SD卡图片，并且解决out of memory问题

int anim abc_fade_in 0x7f040000 int anim abc_fade_out 0x7f040001 int anim abc_slide_in_bottom 0x7f040002 int anim abc_slide_in_top 0x7f040003 int anim abc_slide_out_bottom 0x7f040004 int anim abc_slide_out_top 0x7f040005 int attr actionBarDivider 0x7f01000b int attr actionBarItemBackground 0x7f01000c int attr actionBarSize 0x7f01000a int attr actionBarSplitStyle 0x7f010008 int attr actionBarStyle 0x7f010007 int attr actionBarTabBarStyle 0x7f010004 int attr actionBarTabStyle 0x7f010003 int attr actionBarTabTextStyle 0x7f010005 int attr actionBarWidgetTheme 0x7f010009 int attr actionButtonStyle 0x7f010012 int attr actionDropDownStyle 0x7f010043 int attr actionLayout 0x7f01004a int attr actionMenuTextAppearance 0x7f01000d int attr actionMenuTextColor 0x7f01000e int attr actionModeBackground 0x7f010038 int attr actionModeCloseButtonStyle 0x7f010037 int attr actionModeCloseDrawable 0x7f01003a int attr actionModeCopyDrawable 0x7f01003c int attr actionModeCutDrawable 0x7f01003b int attr actionModeFindDrawable 0x7f010040 int attr actionModePasteDrawable 0x7f01003d int attr actionModePopupWindowStyle 0x7f010042 int attr actionModeSelectAllDrawable 0x7f01003e int attr actionModeShareDrawable 0x7f01003f int attr actionModeSplitBackground 0x7f010039 int attr actionModeStyle 0x7f010036 int attr actionModeWebSearchDrawable 0x7f010041 int attr actionOverflowButtonStyle 0x7f010006 int attr actionProviderClass 0x7f01004c int attr actionViewClass 0x7f01004b int attr activityChooserViewStyle 0x7f010068 int attr background 0x7f01002b int attr backgroundSplit 0x7f01002d int attr backgroundStacked 0x7f01002c int attr buttonBarButtonStyle 0x7f010014 int attr buttonBarStyle 0x7f010013 int attr customNavigationLayout 0x7f01002e int attr disableChildrenWhenDisabled 0x7f010050 int attr displayOptions 0x7f010024 int attr divider 0x7f01002a int attr dividerHorizontal 0x7f010017 int attr dividerPadding 0x7f010052 int attr dividerVertical 0x7f010016 int attr dropDownListViewStyle 0x7f01001d int attr dropdownListPreferredItemHeight 0x7f010044 int attr expandActivityOverflowButtonDrawable 0x7f010067 int attr height 0x7f010022 int attr homeAsUpIndicator 0x7f01000f int attr homeLayout 0x7f01002f int attr icon 0x7f010028 int attr iconifiedByDefault 0x7f010056 int attr indeterminateProgressStyle 0x7f010031 int attr initialActivityCount 0x7f010066 int attr isLightTheme 0x7f010055 int attr itemPadding 0x7f010033 int attr listChoiceBackgroundIndicator 0x7f010048 int attr listPopupWindowStyle 0x7f01001e int attr listPreferredItemHeight 0x7f010018 int attr listPreferredItemHeightLarge 0x7f01001a int attr listPreferredItemHeightSmall 0x7f010019 int attr listPreferredItemPaddingLeft 0x7f01001b int attr listPreferredItemPaddingRight 0x7f01001c int attr logo 0x7f010029 int attr navigationMode 0x7f010023 int attr paddingEnd 0x7f010035 int attr paddingStart 0x7f010034 int attr panelMenuListTheme 0x7f010047 int attr panelMenuListWidth 0x7f010046 int attr popupMenuStyle 0x7f010045 int attr popupPromptView 0x7f01004f int attr progressBarPadding 0x7f010032 int attr progressBarStyle 0x7f010030 int attr prompt 0x7f01004d int attr queryHint 0x7f010057 int attr searchDropdownBackground 0x7f010058 int attr searchResultListItemHeight 0x7f010061 int attr searchViewAutoCompleteTextView 0x7f010065 int attr searchViewCloseIcon 0x7f010059 int attr searchViewEditQuery 0x7f01005d int attr searchViewEditQueryBackground 0x7f01005e int attr searchViewGoIcon 0x7f01005a int attr searchViewSearchIcon 0x7f01005b int attr searchViewTextField 0x7f01005f int attr searchViewTextFieldRight 0x7f010060 int attr searchViewVoiceIcon 0x7f01005c int attr selectableItemBackground 0x7f010015 int attr showAsAction 0x7f010049 int attr showDividers 0x7f010051 int attr spinnerDropDownItemStyle 0x7f010054 int attr spinnerMode 0x7f01004e int attr spinnerStyle 0x7f010053 int attr subtitle 0x7f010025 int attr subtitleTextStyle 0x7f010027 int attr textAllCaps 0x7f010069 int attr textAppearanceLargePopupMenu 0x7f010010 int attr textAppearanceListItem 0x7f01001f int attr textAppearanceListItemSmall 0x7f010020 int attr textAppearanceSearchResultSubtitle 0x7f010063 int attr textAppearanceSearchResultTitle 0x7f010062 int attr textAppearanceSmallPopupMenu 0x7f010011 int attr textColorSearchUrl 0x7f010064 int attr title 0x7f010021 int attr titleTextStyle 0x7f010026 int attr windowActionBar 0x7f010000 int attr windowActionBarOverlay 0x7f010001 int attr windowSplitActionBar 0x7f010002 int bool abc_action_bar_embed_tabs_pre_jb 0x7f060000 int bool abc_action_bar_expanded_action_views_exclusive 0x7f060001 int bool abc_config_actionMenuItemAllCaps 0x7f060005 int bool abc_config_allowActionMenuItemTextWithIcon 0x7f060004 int bool abc_config_showMenuShortcutsWhenKeyboardPresent 0x7f060003 int bool abc_split_action_bar_is_narrow 0x7f060002 int color abc_search_url_text_holo 0x7f070003 int color abc_search_url_text_normal 0x7f070000 int color abc_search_url_text_pressed 0x7f070002 int color abc_search_url_text_selected 0x7f070001 int dimen abc_action_bar_default_height 0x7f080002 int dimen abc_action_bar_icon_vertical_padding 0x7f080003 int dimen abc_action_bar_progress_bar_size 0x7f08000a int dimen abc_action_bar_stacked_max_height 0x7f080009 int dimen abc_action_bar_stacked_tab_max_width 0x7f080001 int dimen abc_action_bar_subtitle_bottom_margin 0x7f080007 int dimen abc_action_bar_subtitle_text_size 0x7f080005 int dimen abc_action_bar_subtitle_top_margin 0x7f080006 int dimen abc_action_bar_title_text_size 0x7f080004 int dimen abc_action_button_min_width 0x7f080008 int dimen abc_config_prefDialogWidth 0x7f080000 int dimen abc_dropdownitem_icon_width 0x7f080010 int dimen abc_dropdownitem_text_padding_left 0x7f08000e int dimen abc_dropdownitem_text_padding_right 0x7f08000f int dimen abc_panel_menu_list_width 0x7f08000b int dimen abc_search_view_preferred_width 0x7f08000d int dimen abc_search_view_text_min_width 0x7f08000c int dimen activity_horizontal_margin 0x7f080011 int dimen activity_vertical_margin 0x7f080012 int drawable abc_ab_bottom_solid_dark_holo 0x7f020000 int drawable abc_ab_bottom_solid_light_holo 0x7f020001 int drawable abc_ab_bottom_transparent_dark_holo 0x7f020002 int drawable abc_ab_bottom_transparent_light_holo 0x7f020003 int drawable abc_ab_share_pack_holo_dark 0x7f020004 int drawable abc_ab_share_pack_holo_light 0x7f020005 int drawable abc_ab_solid_dark_holo 0x7f020006 int drawable abc_ab_solid_light_holo 0x7f020007 int drawable abc_ab_stacked_solid_dark_holo 0x7f020008 int drawable abc_ab_stacked_solid_light_holo 0x7f020009 int drawable abc_ab_stacked_transparent_dark_holo 0x7f02000a int drawable abc_ab_stacked_transparent_light_holo 0x7f02000b int drawable abc_ab_transparent_dark_holo 0x7f02000c int drawable abc_ab_transparent_light_holo 0x7f02000d int drawable abc_cab_background_bottom_holo_dark 0x7f02000e int drawable abc_cab_background_bottom_holo_light 0x7f02000f int drawable abc_cab_background_top_holo_dark 0x7f020010 int drawable abc_cab_background_top_holo_light 0x7f020011 int drawable abc_ic_ab_back_holo_dark 0x7f020012 int drawable abc_ic_ab_back_holo_light 0x7f020013 int drawable abc_ic_cab_done_holo_dark 0x7f020014 int drawable abc_ic_cab_done_holo_light 0x7f020015 int drawable abc_ic_clear 0x7f020016 int drawable abc_ic_clear_disabled 0x7f020017 int drawable abc_ic_clear_holo_light 0x7f020018 int drawable abc_ic_clear_normal 0x7f020019 int drawable abc_ic_clear_search_api_disabled_holo_light 0x7f02001a int drawable abc_ic_clear_search_api_holo_light 0x7f02001b int drawable abc_ic_commit_search_api_holo_dark 0x7f02001c int drawable abc_ic_commit_search_api_holo_light 0x7f02001d int drawable abc_ic_go 0x7f02001e int drawable abc_ic_go_search_api_holo_light 0x7f02001f int drawable abc_ic_menu_moreoverflow_normal_holo_dark 0x7f020020 int drawable abc_ic_menu_