android connect facebook invalid keyhash

i'm working android facebook sdk. i have problem when divice has installed facebook application(invalid key hash) i recived keyhash in this code

public class SpleshScreen extends Activity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.activity_splesh_screen);

    try {
        PackageInfo info = getPackageManager().getPackageInfo(
                "mypackage", 
                PackageManager.GET_SIGNATURES);
        for (android.content.pm.Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.wtf("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
    } catch (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

    Thread background = new Thread() {

        public void run() {

            try {
                // Thread will sleep for 2 seconds
                sleep(2 * 1000);


                //
                // Log.e("asdasdasdasd",my_json );

                // After 2 seconds redirect to another intent
                Intent in = new Intent(getApplicationContext(),
                        MainmoviesActivity.class);
                startActivity(in);

                // Remove activity
                finish();

            } catch (Exception e) {

            }
        }
    };

    // start thread
    background.start();
}

}

and i added this keyhash in my facebook app . i have problem only when divice has facebook application(when i run my app with USB ) what am i doing wrong? if anyone knows solution please help me

khurram

Its because the generate hash key is wrong.

To solve follow this steps:

Paste the following code in oncreate().

try {
    PackageInfo info = getPackageManager().getPackageInfo(
            "com.example.packagename", 
            PackageManager.GET_SIGNATURES);
    for (Signature signature : info.signatures) {
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
} catch (NameNotFoundException e) {

} catch (NoSuchAlgorithmException e) {

}

see this thread

https://stackoverflow.com/a/23863110/2176734

this will surely solve your problem.

1.go to developer.facebook.com

2.select your application

3.Click settings

4.click Add Platform

5.add all mandatory fields

6.add your key hashes there

7.Click save changes

now check

来源：https://stackoverflow.com/questions/26402449/android-connect-facebook-invalid-keyhash