platform:RK3399
OS:Android 7.1

概述

简要介绍三点:

1. 字符相关修改
2. 方向修改
3. 固件升级动画修改

配置修改

修改中英文

diff --git a/recovery.cpp b/recovery.cpp
index 10743c9..a9f41c5 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -137,7 +137,7 @@ static const int BATTERY_WITH_CHARGER_OK_PERCENTAGE = 15;
 constexpr const char* RECOVERY_WIPE = "/etc/recovery.wipe";

 RecoveryUI* ui = NULL;
-static const char* locale = "en_US";
+static const char* locale = "zh_CN";
 char* stage = NULL;
 char* reason = NULL;
 bool modified_flash = false;

修改字符串资源

<?xml version="1.0" encoding="UTF-8"?>
<resources xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <string name="recovery_installing" msgid="7864047928003865598">"正在安装系统更新… 请勿断电"</string>
    <string name="recovery_erasing" msgid="4612809744968710197">"正在清除… 请勿断电"</string>
    <string name="recovery_no_command" msgid="1915703879031023455">"无命令。"</string>
    <string name="recovery_error" msgid="4550265746256727080">"出错了！"</string>
</resources>

参考文档:

如何修改Recovery的字符串资源

注意在Android中recovery_l10n工具目录改变为了以下路径:

bootable/recovery/tools/recovery_l10n

修改字符串资源属性(大小和颜色)

参考文档:

修改字符串资源属性

1.screen_ui.cpp

// Choose the right background string to display during update.  +443
void ScreenRecoveryUI::SetSystemUpdateText(bool security_update) {
    if (security_update) {
        LoadLocalizedBitmap("installing_security_text", &installing_text);
    } else {
        LoadLocalizedBitmap("installing_text", &installing_text);
    }
    Redraw();
}

// Clear the screen and draw the currently selected background icon (if any). +145
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_background_locked() {
    pagesIdentical = false;
    gr_color(0, 0, 0, 255);
    gr_clear();

    if (currentIcon != NONE) {
        if (max_stage != -1) {
            int stage_height = gr_get_height(stageMarkerEmpty);
            int stage_width = gr_get_width(stageMarkerEmpty);
            int x = (gr_fb_width() - max_stage * gr_get_width(stageMarkerEmpty)) / 2;
            int y = gr_fb_height() - stage_height;
            for (int i = 0; i < max_stage; ++i) {
                GRSurface* stage_surface = (i < stage) ? stageMarkerFill : stageMarkerEmpty;
                gr_blit(stage_surface, 0, 0, stage_width, stage_height, x, y);
                x += stage_width;
            }
        }

        GRSurface* text_surface = GetCurrentText();
        int text_x = (gr_fb_width() - gr_get_width(text_surface)) / 2;
        int text_y = GetTextBaseline();
        gr_color(255, 255, 255, 255);
        gr_texticon(text_x, text_y, text_surface);
    }
}

修改字库(汉化)

Android的Recovery中font_10x18.h字库文件制作

无法生效可以查看上面修改字符串资源属性链接.

修改char_width和char_height可以修改字体大小

struct {
  unsigned width;
  unsigned height;
  unsigned char_width;
  unsigned char_height;
  unsigned char rundata[2973];
} font = {
  .width = 960,
  .height = 18,
  .char_width = 10,
  .char_height = 18,
  .rundata = {

更换文件

https://www.jianshu.com/p/3f5cf4599db2

recovery 方向修改

device/common/rk3399

diff --git a/BoardConfig.mk b/BoardConfig.mk
index 85df401..6bdc017 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -84,7 +84,7 @@ BOARD_OPENGL_AEP := true
 #90:  ROTATION_RIGHT
 #180: ROTATION_DOWN
 #270: ROTATION_LEFT
-TARGET_RECOVERY_DEFAULT_ROTATION ?= ROTATION_NONE
+TARGET_RECOVERY_DEFAULT_ROTATION ?= ROTATION_RIGHT

 ENABLE_CPUSETS := true
 #for optee support

固件升级动画修改

目录:

bootable/recovery/res-xxxx/images

其中xxxx表示不同的分辨率.参考:https://www.cnblogs.com/codeking100/p/10338546.html

images目录中有升级动画的图片,名称为:loop000xx.png

根据自己定义的动画,转换为png图片替换该目录下的图片即可.