用户登录数据库和facebook
这是我的布局
这是我的activity_main
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FF4500"
android:orientation="vertical"> <LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/buttonSignIN"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#000080"
android:onClick="signIn"
android:padding="10dp"
android:text="login"
android:textColor="#ffffff" />
<Button
android:id="@+id/buttonSignUP"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#000080"
android:padding="10dp"
android:text="Sign up"
android:textColor="#ffffff" />
<View
android:layout_width="match_parent"
android:layout_height="20dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="OR"
android:textColor="#ffff" />
<View
android:layout_width="match_parent"
android:layout_height="10dp" />
</LinearLayout>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fragment"
android:name="com.fbloginsample.MainFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout="@layout/fragment_main" />
</LinearLayout>
这是我的MainActivity
package com.fbloginsample;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
Button btnSignIn, btnSignUp;
LoginDataBaseAdapter loginDataBaseAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
loginDataBaseAdapter = new LoginDataBaseAdapter(this);
loginDataBaseAdapter = loginDataBaseAdapter.open();
btnSignIn = (Button) findViewById(R.id.buttonSignIN);
btnSignUp = (Button) findViewById(R.id.buttonSignUP);
btnSignUp.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intentSignUP = new Intent(getApplicationContext(),
SignUPActtivity.class);
startActivity(intentSignUP);
}
});
}
public void signIn(View V) {
final Dialog dialog = new Dialog(MainActivity.this);
dialog.setContentView(R.layout.login);
dialog.setTitle("Login");
final EditText editTextUserName = (EditText) dialog
.findViewById(R.id.editTextUserNameToLogin);
final EditText editTextPassword = (EditText) dialog
.findViewById(R.id.editTextPasswordToLogin);
Button btnSignIn = (Button) dialog.findViewById(R.id.buttonSignIn);
btnSignIn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String userName = editTextUserName.getText().toString();
String password = editTextPassword.getText().toString();
String storedPassword = loginDataBaseAdapter
.getSinlgeEntry(userName);
if (password.equals(storedPassword)) {
Toast.makeText(MainActivity.this,
"Congrats: Login Successfull", Toast.LENGTH_LONG)
.show();
dialog.dismiss();
Intent main = new Intent(MainActivity.this, Home.class);
startActivity(main);
} else {
Toast.makeText(MainActivity.this,
"User Name or Password does not match",
Toast.LENGTH_LONG).show();
}
}
});
dialog.show();
}
@Override
protected void onDestroy() {
super.onDestroy();
loginDataBaseAdapter.close();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
在运行应用程序时，它会出现此错误。这是我的logcat上的错误
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.fbloginsample/com.fbloginsample.MainActivity}: android.view.InflateException: Binary XML file line #50: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2345)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1323)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5376)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Caused by: android.view.InflateException: Binary XML file line #50: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:401)
at android.app.Activity.setContentView(Activity.java:2198)
at com.fbloginsample.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:6021)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1323)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5376)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Caused by: android.app.Fragment$InstantiationException: Trying to instantiate a class com.fbloginsample.MainFragment that is not a Fragment
at android.app.Fragment.instantiate(Fragment.java:606)
at android.app.Fragment.instantiate(Fragment.java:582)
at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2108)
at android.app.Activity.onCreateView(Activity.java:5370)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:401)
at android.app.Activity.setContentView(Activity.java:2198)
at com.fbloginsample.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:6021)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1323)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5376)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Caused by: java.lang.ClassCastException
at android.app.Fragment.instantiate(Fragment.java:606)
at android.app.Fragment.instantiate(Fragment.java:582)
at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2108)
at android.app.Activity.onCreateView(Activity.java:5370)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:401)
at android.app.Activity.setContentView(Activity.java:2198)
at com.fbloginsample.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:6021)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1323)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5376)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
at com.android.internal.os.ZygoteInit.m``ain(ZygoteInit.java:703)`enter code here`
我想通过facebook登录。当我用于facebook时，这个工作正常。但是，一旦我为主要活动添加了登录和注册按钮并实现了它们。我遇到了上述错误。有没有人帮我解决？
这是我的Fragment类MainFragment
package com.fbloginsample;
import android.content.Intent;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import com.facebook.AccessToken;
import com.facebook.AccessTokenTracker;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.Profile;
import com.facebook.ProfileTracker;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
/**
* A placeholder fragment containing a simple view.
*/
public class MainFragment extends Fragment {
private TextView mTextDetails;
private CallbackManager mCallbackManager;
private AccessTokenTracker mTokenTracker;
private ProfileTracker mProfileTracker;
private FacebookCallback<LoginResult> mCallback=new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
AccessToken accessToken=loginResult.getAccessToken();
Profile profile= Profile.getCurrentProfile();
displayWelcomeMessage(profile);
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException e) {
}
};
public MainFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getActivity().getApplicationContext());
mCallbackManager=CallbackManager.Factory.create();
mTokenTracker=new AccessTokenTracker() {
@Override
protected void onCurrentAccessTokenChanged(AccessToken oldToken, AccessToken newToken) {
}
};
mProfileTracker=new ProfileTracker() {
@Override
protected void onCurrentProfileChanged(Profile oldProfile, Profile newProfile) {
displayWelcomeMessage(newProfile);
}
};
mTokenTracker.startTracking();
mProfileTracker.startTracking();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_main, container, false);
}
public void displayWelcomeMessage(Profile profile){
if(profile!=null){
// mTextDetails.setText("welcome"+profile.getName());
}
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
LoginButton loginButton=(LoginButton)view.findViewById(R.id.login_button);
loginButton.setReadPermissions("user_friends");
loginButton.setFragment(this);
loginButton.registerCallback(mCallbackManager,mCallback);
}
@Override
public void onResume() {
super.onResume();
Profile profile=Profile.getCurrentProfile();
// displayWelcomeMessage(profile);
}
@Override
public void onStop() {
super.onStop();
mTokenTracker.stopTracking();
mProfileTracker.stopTracking();
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
mCallbackManager.onActivityResult(requestCode, resultCode,data);
}
}
这是片段类的布局：fragment_main
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivityFragment">
<TextView
android:id="@+id/text_details"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_above="@+id/login_button"
android:layout_height="wrap_content"/>
<com.facebook.login.widget.LoginButton
android:id="@+id/login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="85dp"
android:layout_marginBottom="30dp"
android:layout_marginTop="30dp" />
</LinearLayout>
1 个答案:
答案 0 :(得分：0)
您应该使用FragmentActivity代替Activity，因为您使用的是支持片段。
更改此内容。
public class MainActivity extends Activity
对此。
public class MainActivity extends FragmentActivity
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