这是我第一次使用片段。我正在实施facebook登录。当我为片段
添加代码片段时 /* FACEBOOK FRAGMENT SETUP */
if (savedInstanceState == null) {
// Add the fragment on initial activity setup
mainFragment = new MainFragment();
getSupportFragmentManager()
.beginTransaction()
.add(android.R.id.content, mainFragment)
.commit();
} else {
// Or set the fragment from restored state info
mainFragment = (MainFragment) getSupportFragmentManager()
.findFragmentById(android.R.id.content);
}
然后我的按钮或文本视图的onClickListener都不起作用。我不确定为什么会这样。有人能说清楚这个吗？
主要活动代码
public class ActivityLogin extends FragmentActivity {
// label to display gcm messages
TextView lblMessage;
// Asyntask
AsyncTask<Void, Void, Void> mRegisterTask;
private EditText edt_username, edt_password;
public String gcm_id, un, pw, tab;
public ProgressDialog pdialog;
static int count = 0;
public String gcm_regid;
ConnectionDetector cd;
AlertDialogManager alert = new AlertDialogManager();
SharedPreferences sp1;
GPSTracker gpstracker;
RequestQueue queue;
//FB FRAGMENT
private MainFragment mainFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent in = getIntent();
tab = in.getStringExtra("tab");
queue = Volley.newRequestQueue(this);
//Check for saved credentials.
sp1=getSharedPreferences("Login",MODE_PRIVATE);
un = sp1.getString("un", "");
pw = sp1.getString("pw", "");
// Make sure the device has the proper dependencies.
GCMRegistrar.checkDevice(this);
gpstracker = new GPSTracker(getApplicationContext());
// Make sure the manifest was properly set - comment out this line
// while developing the app, then uncomment it when it's ready.
//GCMRegistrar.checkManifest(this);
cd = new ConnectionDetector(getApplicationContext());
//registerReceiver(mHandleMessageReceiver, new IntentFilter(DISPLAY_MESSAGE_ACTION));
final String regId = GCMRegistrar.getRegistrationId(this);
// Check if regid already presents
if (regId.equals("")) {
// Registration is not present, register now with GCM
GCMRegistrar.register(this, SENDER_ID);
gcm_id=GCMRegistrar.getRegistrationId(this);
} else {
gcm_id=regId;
// Device is already registered on GCM
if (GCMRegistrar.isRegisteredOnServer(this)) {
// Skips registration.
Toast.makeText(getApplicationContext(), "Already registered with GCM", Toast.LENGTH_LONG).show();
}
}
/*if(un==""){*/
setContentView(R.layout.login_layout);
Button login = (Button) findViewById(R.id.btn_login);
/* init EditText */
edt_username = (EditText) findViewById(R.id.edt_userNameLogin);
edt_password = (EditText) findViewById(R.id.edt_PasswordLogin);
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (edt_username.getText().toString().equalsIgnoreCase("")) {
alert.showAlertDialog(ActivityLogin.this, "KpFun alert!",
"Username no empty!", false);
edt_username.requestFocus();
return;
}
if (edt_password.getText().toString().equalsIgnoreCase("")) {
alert.showAlertDialog(ActivityLogin.this, "KpFun alert!",
"Password no empty!", false);
edt_password.requestFocus();
return;
}
if (!cd.isConnectingToInternet()) {
alert.showAlertDialog(ActivityLogin.this, "KpFun alert!",
"No network, Please check your data connection!",
false);
return;
}
Login();
}
});
TextView backLink = (TextView) findViewById(R.id.tv_Back);
backLink.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent inRegister = new Intent(ActivityLogin.this,
SplashScreen.class);
startActivity(inRegister);
finish();
}
});
/*}else{
Login();
}*/
/* FACEBOOK FRAGMENT SETUP */
if (savedInstanceState == null) {
// Add the fragment on initial activity setup
mainFragment = new MainFragment();
getSupportFragmentManager()
.beginTransaction()
.add(android.R.id.content, mainFragment)
.commit();
} else {
// Or set the fragment from restored state info
mainFragment = (MainFragment) getSupportFragmentManager()
.findFragmentById(android.R.id.content);
}
if(!un.equals("")){
Login();
}
}
/* MORE STUFF TAKEN OUT */
碎片代码
package com.kpfunusa1;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Arrays;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Base64;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.facebook.Response;
import com.facebook.Request;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.model.GraphUser;
import com.facebook.widget.LoginButton;
public class MainFragment extends Fragment {
private static final String TAG = "MainFragment";
private UiLifecycleHelper uiHelper;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
uiHelper = new UiLifecycleHelper(getActivity(), callback);
uiHelper.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.login_layout, container, false);
LoginButton authButton = (LoginButton) view.findViewById(R.id.authButton);
authButton.setFragment(this);
authButton.setReadPermissions(Arrays.asList("public_profile", "email", "user_friends", "user_birthday", "user_location", "user_website", "user_likes", "user_status"));
return view;
}
private Session.StatusCallback callback = new Session.StatusCallback() {
@Override
public void call(Session session, SessionState state, Exception exception) {
onSessionStateChange(session, state, exception);
}
};
private void onSessionStateChange(Session session, SessionState state, Exception exception)
{
if (state.isOpened())
{
Log.i("facebook", "Logged in...");
Request.newMeRequest(session, new Request.GraphUserCallback()
{
@Override
public void onCompleted(GraphUser user, Response response)
{
if(user!=null)
{
String test=user.getName();
test =user.getProperty("email")+"";
test=(user.getProperty("gender")+"");
test=(user.getId()+"");
test=user.getBirthday();
test=user.getUsername();
test=user.getId();
}
else
{
String test=("its null");
test=(response.getError().getErrorMessage());
}
}
}).executeAsync();
}
else if (state.isClosed())
{
Log.i("facebook", "Logged out...");
}
}
@Override
public void onResume() {
super.onResume();
// For scenarios where the main activity is launched and user
// session is not null, the session state change notification
// may not be triggered. Trigger it if it's open/closed.
Session session = Session.getActiveSession();
if (session != null &&
(session.isOpened() || session.isClosed()) ) {
onSessionStateChange(session, session.getState(), null);
}
uiHelper.onResume();
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
uiHelper.onActivityResult(requestCode, resultCode, data);
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
uiHelper.onSaveInstanceState(outState);
}
}
答案 0 :(得分：0)
UiLifecycleHelper应该在Login活动中创建并调用所有*（创建/恢复等）方法，因为片段中的onActivityResult永远不会被调用。
你应该只在片段代码中实现UI（登录btn等）。在Activity.setContentView中，您应该将layout设置为定义的登录片段。
答案 1 :(得分：0)
您是否尝试在主要活动中导入正确的库？
尝试导入：
import android.support.v4.app.FragmentActivity;