把android默认的安装路径改为储存卡

packages/apps/Settings/src/com/android/settings/ApplicationSettings.java

private String getAppInstallLocation() {
  int selectedLocation = Settings.System.getInt(getContentResolver(),
  // Settings.Secure.DEFAULT_INSTALL_LOCATION, APP_INSTALL_AUTO);
  Settings.Secure.DEFAULT_INSTALL_LOCATION, APP_INSTALL_SDCARD);
  if (selectedLocation == APP_INSTALL_DEVICE) {
  return APP_INSTALL_DEVICE_ID;
  } else if (selectedLocation == APP_INSTALL_SDCARD) {
  return APP_INSTALL_SDCARD_ID;
  } else if (selectedLocation == APP_INSTALL_AUTO) {
  return APP_INSTALL_AUTO_ID;
  } else {
  // Default value, should not happen.
  return APP_INSTALL_AUTO_ID;
  }
  }