Android 通过apk文件获取相应的包名和版本号

节选自：Android 通过apk文件获取相应的包名和版本号

通过下面方法可以直接获取到apk的包名和版本号：apkPath是apk存放的路径

public static Drawable GetApkInfo(Context context, String apkPath) {
    PackageManager pm = context.getPackageManager();
    PackageInfo info = pm.getPackageArchiveInfo(apkPath, PackageManager.GET_ACTIVITIES);
    if (info != null) {
        ApplicationInfo appInfo = info.applicationInfo;
        String packageName = appInfo.packageName;  //得到安装包名称
        String version = info.versionName;//获取安装包的版本号
        Log.i(TAG, "getApkIcon: " + packageName + "-------" + version);
        try {
            return appInfo.loadIcon(pm);
        } catch (OutOfMemoryError e) {
            Log.i(TAG, "GetApkInfo: " + e);
        }
    }
    return null;
}