@Override
public void characters(char[] ch, int start, int length) throws SAXException {
if (this.tagName == null) return;
String value = new String(ch, start, length);
if (this.tagName.equalsIgnoreCase("UpdateInfo")) {
if (mVersionInfo.mUpdateInfo == null) mVersionInfo.mUpdateInfo = "";
mVersionInfo.mUpdateInfo += value;
}
}
/**
* 检查是否有缓存更新文件
*
* @param context 当前上下文
* @param outVi 若有缓存更新信息，outVi为安装信息
* @param outPath 若有缓存安装文件，outPath记录安装路径，否则为null
* @return 若返回false，说明没有缓存有效的更新文件，返回true说明有缓存更新文件
*/
private boolean checkCache(Context context, final VersionInfo outVi, final StringBuffer outPath) {
SharedPreferences sp = context.getSharedPreferences("update_info", Context.MODE_PRIVATE);
outVi.mVersionCode = sp.getInt("versionCode", 0);
outVi.mVersionName = sp.getString("versionName", null);
outVi.mUpdateInfo = sp.getString("updateInfo", null);
if (getCurrentVersionInfo(context).getVersionCode() >= outVi.getVersionCode()) {
Log.d(tag, "当前版本比缓存版本更新");
return false;
}
outPath.append(sp.getString("savePath", null));
if (outPath == null || !new File(outPath.toString()).exists()) {
Log.d(tag, "缓存文件不存在");
return false;
}
return true;
}
