launcher界面下google檔案夾的修改

一   達成任務：

         Launcher界面下Google檔案夾修改背景，應用間的間寬尺寸資源等資訊以及google檔案夾中各個應用的大小調整~

二   主要的布局檔案

      1. res/layout/user_folder.xml：布局檔案，用來修改背景等資訊的

      2. res/values/colors.xml：顔色等資源設定

            +  <color name="quantum_panel_transparent_bg_text_color">#EED8AE</color>

      3. res/values/styles.xml

                 <style name="Icon.AllApps">

          <item name="android:background">@null</item>

-         <item name="android:textColor">@color/quantum_panel_text_color</item>

+        <item name="android:textColor">@color/quantum_panel_transparent_bg_text_color</item>

         <style name="Icon.Folder">

         <item name="android:background">@null</item>

-        <item name="android:textColor">@color/quantum_panel_text_color</item>

+        <item name="android:textColor">@color/quantum_panel_transparent_bg_text_color</item>

         <item name="android:shadowRadius">0</item>

         <item name="customShadows">false</item>

.left, 0,

-                padding.right, 0);

+                getResources().getDrawable(R.drawable.apps_menu_background), 0, 0,

+                0, 0);

         Rect bgPadding = new Rect()

三   涉及的類檔案：

    1.   packages/apps/Launcher3/src/android/DeviceProfile.java

     // Folder

        folderCellWidthPx = cellWidthPx + 3 * edgeMarginPx;

        if(SystemProperties.is_lax_tel_mx()) {  

            folderCellHeightPx = cellHeightPx + edgeMarginPx+40;

        } else {

            folderCellHeightPx = cellHeightPx + edgeMarginPx;

        }

        folderBackgroundOffset = -edgeMarginPx;

        folderIconSizePx = iconSizePx + 2 * -folderBackgroundOffset;

    2.  src/com/android/launcher3/DeviceProfile.java

         主要内容：Icon的尺寸，hotSeat的大小及個數、Icon間的高度和寬度值、Icon的行數和列數、預設的layout等資訊

主要修改了updateIconSize()函數中的方法；   

     3.   src/com/android/launcher3/allapps/AllAppsContainerView.java

    public class AllAppsContainerView extends BaseContainerView implements DragSourc

         // TODO: Use quantum_panel instead of quantum_panel_shape

         InsetDrawable background = new InsetDrawable(

-                getResources().getDrawable(R.drawable.quantum_panel_shape), paddin g

四     針對布局檔案Launcher.xml的分析

<FrameLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:launcher="http://schemas.android.com/apk/res/com.android.launcher"

    android:id="@+id/launcher"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@drawable/workspace_bg">

    <com.android.launcher2.DragLayer

        android:id="@+id/drag_layer"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:fitsSystemWindows="true">

        <!-- 桌面的分隔線，将hotseat和workspace分割開來 -->

        <include

            android:id="@+id/dock_divider"

            layout="@layout/workspace_divider"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginBottom="@dimen/button_bar_height"

            android:layout_gravity="bottom" />

        <!-- 桌面分隔線上的訓示條，workspace翻頁的時候會顯示 -->

        <include

            android:id="@+id/paged_view_indicator"

            layout="@layout/scroll_indicator"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_gravity="bottom"

            android:layout_marginBottom="@dimen/button_bar_height" />

        <!--手機桌面，預設系統是包含可翻轉5頁 -->

        <com.android.launcher2.Workspace

            android:id="@+id/workspace"

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:paddingStart="@dimen/workspace_left_padding"

            android:paddingEnd="@dimen/workspace_right_padding"

            android:paddingTop="@dimen/workspace_top_padding"

            android:paddingBottom="@dimen/workspace_bottom_padding"

            launcher:defaultScreen="2"

            launcher:cellCountX="@integer/cell_count_x"

            launcher:cellCountY="@integer/cell_count_y"

            launcher:pageSpacing="@dimen/workspace_page_spacing"

            launcher:scrollIndicatorPaddingLeft="@dimen/workspace_divider_padding_left"

            launcher:scrollIndicatorPaddingRight="@dimen/workspace_divider_padding_right">

        <!--workspace總共可翻轉5個頁面，一個workspace_screen定義一個頁面布局 -->

            <include android:id="@+id/cell1" layout="@layout/workspace_screen" />

            <include android:id="@+id/cell2" layout="@layout/workspace_screen" />

            <include android:id="@+id/cell3" layout="@layout/workspace_screen" />

            <include android:id="@+id/cell4" layout="@layout/workspace_screen" />

            <include android:id="@+id/cell5" layout="@layout/workspace_screen" />

        </com.android.launcher2.Workspace>

       <!--hotseat為桌面分隔線下的界面，不随workspace翻頁操作而移動的部分 -->

        <include layout="@layout/hotseat"

            android:id="@+id/hotseat"

            android:layout_width="match_parent"

            android:layout_height="@dimen/button_bar_height_plus_padding"

            android:layout_gravity="bottom" />

       <!--qsb_bar布局包含桌面上的可搜尋框，以及長按桌面上圖示時顯示删除和應用資訊的操作框 -->

        <include

            android:id="@+id/qsb_bar"

            layout="@layout/qsb_bar" />

        <!-- workspace_cling手機剛開機或者對launcher應用清空資料第一次進入到workspace時彈出的操作介紹界面 -->

        <include layout="@layout/workspace_cling"

            android:id="@+id/workspace_cling"

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:visibility="gone" />

        <!--folder_cling手機剛開始或者對launcher應用清空資料，第一次打開将workspace上兩個以上的圖示拖到一起形成檔案夾時彈出的操作界面 -->

        <include layout="@layout/folder_cling"

            android:id="@+id/folder_cling"

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:visibility="gone" />

        <!-- voice_button_proxy音量按鍵。。。。 -->

        <com.android.launcher2.DrawableStateProxyView

            android:id="@+id/voice_button_proxy"

            android:layout_width="80dp"

            android:layout_height="@dimen/qsb_bar_height"

            android:layout_gravity="top|end"

            android:clickable="true"

            android:onClick="onClickVoiceButton"

            android:importantForAccessibility="no"

            launcher:sourceViewId="@+id/voice_button" />

       <!-- apps_customize_pane點選hotseat中心圖示進入的界面，該界面顯示所用應用和小部件（widget） -->

        <include layout="@layout/apps_customize_pane"

            android:id="@+id/apps_customize_pane"

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:visibility="invisible" />

    </com.android.launcher2.DragLayer>

</FrameLayout>