Android : Print the HashKey required for working with native facebook SDK. On the android project, put this function(copy-paste) on the Main Activity class. Now call this.printFaceBookHash("com.saumya.myNativeApp"); Note: pass on the exact package name of your application. This will print the HashKey on the LogCat output of Eclipse. Not sure if …

AndroidFBHash.java

private void printFaceBookHash(String packageName){
	String mAppPackage = packageName;
	try {
	      PackageInfo info = getPackageManager().getPackageInfo(
	      mAppPackage, PackageManager.GET_SIGNATURES);
	      for (Signature signature : info.signatures) {
	          MessageDigest md = MessageDigest.getInstance("SHA");
	          md.update(signature.toByteArray());
	          Log.d("KeyHash:", "====================================================");
	          Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
	          Log.d("KeyHash:", "====================================================");
	      }
	} catch (NameNotFoundException e) {
		Log.d("NameNotFoundException:", "====================================================");
		e.printStackTrace();
		Log.d("NameNotFoundException:", "====================================================");
	} catch (NoSuchAlgorithmException e) {
		Log.d("NoSuchAlgorithmException:", "====================================================");
		e.printStackTrace();
		Log.d("NoSuchAlgorithmException:", "====================================================");
	}
}