判断APP当前版本号与提供的apk对比是否需要升级

private static boolean packageContentIsCorrect(String filename,Context context) {
PackageManager mPm = context.getPackageManager();
PackageInfo pi = mPm.getPackageArchiveInfo(filename,
PackageManager.GET_RECEIVERS);
if (pi == null) {
System.out.println("Package could not be parsed successfully.");
return false;
}
if (!pi.packageName.equals("com.test")) {
System.out.println("Package name in apk (" + pi.packageName
+ ") does not match package name specified by programmer ("
+ "com.test" + ").");
return false;
}
//判断是否需要安装新版本
try {
int installVersionCode = pi.versionCode;
int versionCode = mPm.getPackageInfo(context.getPackageName(), 0).versionCode;
System.out.println("pi-installVersionCode----------------"+installVersionCode);
System.out.println("pi--versionCode---------------"+pi.versionCode);
if(installVersionCode <= versionCode){
System.out.println("Package not need update.");
return false;
}
} catch (Exception e) {
e.printStackTrace();
}
return true;
}