Android4.4 Setting.apk source code, you can view the study, but there is a problem, leading to Eclipse when there are errors, because the system need to call the package, and the package system are hidden in a @hide system, allowing only the call, so this project is not to call.

res\drawable\appwidget_button_center.xml
...\........\appwidget_button_left.xml
...\........\appwidget_button_right.xml
...\........\appwidget_item_bg.xml
...\........\data_sweep_left.xml
...\........\data_sweep_limit.xml
...\........\data_sweep_right.xml
...\........\data_sweep_warning.xml
...\........\data_usage_bar.xml
...\........\data_usage_sweep_background.xml
...\........\empty_icon.xml
...\........\ic_default_user.png
...\........\ic_list_sync_anim.xml
...\........\ic_tab_all.xml
...\........\ic_tab_download.xml
...\........\ic_tab_running.xml
...\........\ic_tab_sdcard.xml
...\........\lock_anim.xml
...\........\regulatory_info.png
...\........\signal.xml
...\........\transparency_tileable.xml
...\........\wifi_signal_dark.xml
...\........\wifi_signal_light.xml
...\........\wifi_signal_lock_dark.xml
...\........\wifi_signal_lock_light.xml
...\........\wifi_signal_open_dark.xml
...\........\wifi_signal_open_light.xml
...\........-hdpi\appwidget_bg_holo.9.png
...\.............\appwidget_inner_focused_c_holo.9.png
...\.............\appwidget_inner_focused_l_holo.9.png
...\.............\appwidget_inner_focused_r_holo.9.png
...\.............\appwidget_inner_pressed_c_holo.9.png
...\.............\appwidget_inner_pressed_l_holo.9.png
...\.............\appwidget_inner_pressed_r_holo.9.png
...\.............\appwidget_item_bg_normal.9.png
...\.............\appwidget_item_bg_pressed.9.png
...\.............\appwidget_settings_divider_holo.9.png
...\.............\appwidget_settings_ind_mid_c_holo.9.png
...\.............\appwidget_settings_ind_mid_l_holo.9.png
...\.............\appwidget_settings_ind_mid_r_holo.9.png
...\.............\appwidget_settings_ind_off_c_holo.9.png
...\.............\appwidget_settings_ind_off_l_holo.9.png
...\.............\appwidget_settings_ind_off_r_holo.9.png
...\.............\appwidget_settings_ind_on_c_holo.9.png
...\.............\appwidget_settings_ind_on_l_holo.9.png
...\.............\appwidget_settings_ind_on_r_holo.9.png
...\.............\avatar_default_1.png
...\.............\avatar_default_2.png
...\.............\avatar_default_3.png
...\.............\avatar_default_4.png
...\.............\avatar_default_5.png
...\.............\avatar_default_6.png
...\.............\avatar_default_7.png
...\.............\avatar_default_8.png
...\.............\data_grid_border.9.png
...\.............\data_grid_primary.9.png
...\.............\data_grid_secondary.9.png
...\.............\data_sweep_left_activated.9.png
...\.............\data_sweep_left_default.9.png
...\.............\data_sweep_limit_activated.9.png
...\.............\data_sweep_limit_default.9.png
...\.............\data_sweep_right_activated.9.png
...\.............\data_sweep_right_default.9.png
...\.............\data_sweep_warning_activated.9.png
...\.............\data_sweep_warning_default.9.png
...\.............\dotted_line_480px.png
...\.............\encroid_progress.png
...\.............\encroid_resignin.png
...\.............\encroid_waiting.png
...\.............\ic_appwidget_settings_bluetooth_off_holo.png
...\.............\ic_appwidget_settings_bluetooth_on_holo.png
...\.............\ic_appwidget_settings_brightness_auto_holo.png
...\.............\ic_appwidget_settings_brightness_full_holo.png
...\.............\ic_appwidget_settings_brightness_half_holo.png
...\.............\ic_appwidget_settings_brightness_off_holo.png
...\.............\ic_appwidget_settings_location_off_holo.png
...\.............\ic_appwidget_settings_location_on_holo.png
...\.............\ic_appwidget_settings_location_saving_holo.png
...\.............\ic_appwidget_settings_sync_off_holo.png
...\.............\ic_appwidget_settings_sync_on_holo.png
...\.............\ic_appwidget_settings_wifi_off_holo.png
...\.............\ic_appwidget_settings_wifi_on_holo.png
...\.............\ic_btn_next.png
...\.............\ic_bt_cellphone.png
...\.............\ic_bt_config.png
...\.............\ic_bt_headphones_a2dp.png
...\.............\ic_bt_headset_hfp.png
...\.............\ic_bt_imaging.png
...\.............\ic_bt_keyboard_hid.png
...\.............\ic_bt_laptop.png
...\.

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