Android 系统实现多种开机动画和logo切换功能

private void createOrDeleteFile(String str){
  String sDir = "/protect_f";
  File fDir = new File(sDir);
  if (fDir.exists()){
   try {
    Runtime.getRuntime().exec("chmod 777"+sDir);
   } catch (IOException e) {
    e.printStackTrace();
   }
  }

  File mFile = new File(sDir,File_moto_logo);
  if (mFile.exists()){
   mFile.delete();
  }

  mFile = new File(sDir,File_samsun_logo);
  if (mFile.exists()){
   mFile.delete();
  }
 mFile = new File(sDir,"sysBoot_logo_null.dat");
  if (mFile.exists()){
   mFile.delete();
  }

  if (str != null){
   mFile = new File(sDir,str);
   if (!mFile.exists()){
    try {
     mFile.createNewFile();
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
  }
 }

const char LOGO_ON5_ANI[] = "/protect_f/sysBoot_logo_moto.dat";
const char LOGO_I7_ANI[] = "/protect_f/sysBoot_logo_samsun.dat";
/*
 * Show kernel logo when phone boot up
 *
 */
void show_kernel_logo(){  //这是系统本来就有的
 SLOGD("[libshowlogo: %s %d]show kernel logo, index = 38 \n",__FUNCTION__,__LINE__);
 if (error_flag == 0) {
  if(open(LOGO_ON5_ANI,O_RDONLY) >= 0){
   anim_show_logo(kernel_logo_position+1);
   property_set("ani_type","custom");
   property_set("animation_num","On5_Ani");
  }else if (open(LOGO_I7_ANI,O_RDONLY) >= 0) {
   anim_show_logo(kernel_logo_position+2);
   property_set("ani_type","custom");
   property_set("animation_num","I7_Ani");
  }else{
   anim_show_logo(kernel_logo_position);
   property_set("ani_type","android");
   property_set("animtion_num","android");
  }
 }
}

 char anitype[PROPERTY_VALUE_MAX];
 char aninum[PROPERTY_VALUE_MAX];
 property_get("ani_type",anitype,"");
 property_get("animation_num",aninum,"");
 if (strcmp("custom",anitype) == 0) {
  if (strcmp("On5_Ani", aninum)==0) {
   if (access("/system/media/bootanimation_custom.zip", R_OK) == 0) {
    if ((zipFile = ZipFileRO::open("/system/media/bootanimation_custom.zip")) != NULL) {
     mZip = zipFile;
    }
   }
  }else if (strcmp("I7_Ani", aninum)==0){
   if (access("/system/media/bootanimation_s6.zip", R_OK) == 0) {
    if ((zipFile = ZipFileRO::open("/system/media/bootanimation_s6.zip")) != NULL) {
     mZip = zipFile;
    }
   }
  }
 }
 if (zipFile == NULL) {