我的应用程序运行完美，然后添加以下代码LoginManager.getInstance().logOut();以断开当前的Facebook帐户（开发人员帐户），ide显示运行应用程序时出错，但应用程序仍然启动，但在尝试登录时，它崩溃了，现在它没有登录，它一直在崩溃！即使我没有改变任何东西，除了将该行代码添加到下一个活动以使应用程序断开连接以防用户想要注销！
这里是我的java代码：
public class ConnexionActivity extends AppCompatActivity {
Button b_bb, b_back, ee, b_inscrp_formulaire, fb;
EditText tb_pseudo, tb_mdp;
int id;
String name, gender, email, birthday;
private LoginButton loginButton;
private CallbackManager callbackManager;
Profile profile;
//new try:
private AccessTokenTracker accessTokenTracker;
private Button customFacebookLogin;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
callbackManager = CallbackManager.Factory.create();
/*List<String> permissionNeeds = Arrays.asList("user_photos", "email",
"user_birthday", "public_profile", "AccessToken");*/
setContentView(R.layout.activity_connexion);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setTitle("");
setSupportActionBar(toolbar);
b_inscrp_formulaire = (Button) findViewById(R.id.b_inscrip_formulaire);
fb = (Button) findViewById(R.id.fb);
loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton.setText("");
loginButton.setReadPermissions(Arrays.asList("public_profile", "email", "user_friends", "user_birthday"));
//"user_photos", "email","user_birthday", "public_profile"
loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
graphRequest(loginResult.getAccessToken());
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException error) {
}
});
//getting the hash key
try {
PackageInfo info = getPackageManager().getPackageInfo(
"your.package",
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 (PackageManager.NameNotFoundException e) {
} catch (NoSuchAlgorithmException e) {
}
//2nd way to generate hash key (or get it)
try {
PackageInfo info = getPackageManager().getPackageInfo("your.package.name", 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 (PackageManager.NameNotFoundException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
b_bb = (Button) findViewById(R.id.b_bb);
b_back = (Button) findViewById(R.id.b_back);
tb_pseudo = (EditText) findViewById(R.id.textbox_pseudo);
tb_mdp = (EditText) findViewById(R.id.textbox_mdp);
/////////////
ee = (Button) findViewById(R.id.button);
////////////
b_bb.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: {
b_bb.setBackgroundResource(R.drawable.button_bb_selec);
break;
}
case MotionEvent.ACTION_UP: {
b_bb.setBackgroundResource(R.drawable.button_bb);
break;
}
}
return false;
}
});
b_bb.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isAuthorized()) {
Intent menu_p = new Intent(ConnexionActivity.this, MenuPActivity.class);
menu_p.putExtra("pseudo", tb_pseudo.getText().toString());
startActivity(menu_p);
} else {
openDialog();
}
}
});
b_back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ConnexionActivity.this.finish();
}
});
ee.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent menu_p = new Intent(ConnexionActivity.this, MenuPActivity.class);
menu_p.putExtra("pseudo", "Easter");
startActivity(menu_p);
}
});
b_inscrp_formulaire.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent menu_p = new Intent(ConnexionActivity.this, InscriptionActivity.class);
startActivity(menu_p);
}
});
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
graphRequest(loginResult.getAccessToken());
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException error) {
}
});
fb.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
LoginManager.getInstance().logInWithReadPermissions(ConnexionActivity.this, Arrays.asList("user_photos", "email",
"user_birthday", "public_profile"));
profile = Profile.getCurrentProfile().getCurrentProfile();
if (profile != null) {
// user has logged in
Intent menu_p = new Intent(ConnexionActivity.this, MenuPActivity.class);
menu_p.putExtra("pseudo", profile.getFirstName());
startActivity(menu_p);
Toast.makeText(getApplicationContext(), "Connecté : " + profile.getFirstName() + " " + profile.getLastName(), Toast.LENGTH_SHORT).show();
} else {
// user has not logged in
Toast.makeText(getApplicationContext(), "Non-Connecté : Erreur de connexion!!", Toast.LENGTH_SHORT).show();
}
}
});
//To log out of FB:
/*LoginManager.getInstance().logOut();*/
//TODO: check if the user is logged in or not
/* profile = Profile.getCurrentProfile().getCurrentProfile();
if (profile != null) {
// user has logged in
} else {
// user has not logged in
}*/
}
private Boolean isAuthorized() {
if (tb_pseudo.getText().toString().equals("Admin")
&& tb_mdp.getText().toString().equals("0000")
) {
return true;
} else
return false;
}
public void openDialog() {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("Mauvaise combinaison \"Pseudo\", \"Mot de passe\"");
alertDialogBuilder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
public void graphRequest(AccessToken token) {
GraphRequest request = GraphRequest.newMeRequest(token, new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
Toast.makeText(getApplicationContext(), object.toString(), Toast.LENGTH_LONG).show();
}
});
Bundle b = new Bundle();
b.putString("fields", "id,email,first_name,last_name,picture.type(large)");
request.setParameters(b);
request.executeAsync();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
}
答案 0 :(得分：0)
我猜问题只是在IDE中，关于索引的问题！我关闭并重新打开IDE，一切正常。