在图形布局中显示良好，然后当我在模拟器中启动时它会这样做
我认为这可能是视图膨胀的问题，或者我不确定我是 android 新手。请帮助我已经尝试解决这个愚蠢的布局问题好几个小时了。谢谢
package com.keyconsultant.parse.logintutorial;
import java.util.Locale;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import com.keyconsultant.parse.logintutorial.error.UnknownErrorDialogFactory;
import com.keyconsultant.parse.logintutorial.fragment.BaseFragment;
import com.keyconsultant.parse.logintutorial.model.user.UserManager;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.AuthenticateUserErrorEvent;
import com.parse.ParseException;
import com.squareup.otto.Subscribe;
/**
* Fragment for logging in. Includes button for loading the Create account view.
*
* @author Trey Robinson
*
*/
public class LoginFragment extends BaseFragment {
public static final String EXTRA_USERNAME = "com.keyconsultant.parse.logintutorial.activity.extra.USERNAME";
public static final String EXTRA_PASSWORD = "com.keyconsultant.parse.logintutorial.activity.extra.PASSWORD";
// UI references.
private EditText mUserNameEditText;
private EditText mPasswordEditText;
/**
* Factory method for creating new fragments
* @return
*/
public static LoginFragment newInstance(){
return new LoginFragment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_login, container, false);
mUserNameEditText = (EditText) view.findViewById(R.id.username);
mPasswordEditText = (EditText) view.findViewById(R.id.password);
mPasswordEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
if (id == EditorInfo.IME_NULL) {
attemptLogin();
return true;
}
return false;
}
});
view.findViewById(R.id.sign_in_button).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
attemptLogin();
}
});
view.findViewById(R.id.register_button).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
createAccount();
}
});
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if(savedInstanceState != null){
mUserNameEditText.setText(savedInstanceState.getString(EXTRA_USERNAME));
mPasswordEditText.setText(savedInstanceState.getString(EXTRA_PASSWORD));
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(EXTRA_USERNAME, mUserNameEditText.getText().toString());
outState.putString(EXTRA_PASSWORD, mPasswordEditText.getText().toString());
}
/**
* Attempts to sign in or register the account specified by the login form.
* If there are form errors (invalid email, missing fields, etc.), the
* errors are presented and no actual login attempt is made.
*/
public void attemptLogin() {
clearErrors();
// Store values at the time of the login attempt.
String username = mUserNameEditText.getText().toString();
String password = mPasswordEditText.getText().toString();
boolean cancel = false;
View focusView = null;
// Check for a valid password.
if (TextUtils.isEmpty(password)) {
mPasswordEditText.setError(getString(R.string.error_field_required));
focusView = mPasswordEditText;
cancel = true;
} else if (password.length() < 4) {
mPasswordEditText.setError(getString(R.string.error_invalid_password));
focusView =mPasswordEditText;
cancel = true;
}
// Check for a valid email address.
if (TextUtils.isEmpty(username)) {
mUserNameEditText.setError(getString(R.string.error_field_required));
focusView = mUserNameEditText;
cancel = true;
}
if (cancel) {
// There was an error; don't attempt login and focus the first
// form field with an error.
focusView.requestFocus();
} else {
// perform the user login attempt.
UserManager.getInstance().authenticate(username.toLowerCase(Locale.getDefault()), password);
}
}
/**
* Load the create account view.
*/
private void createAccount(){
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
fragmentTransaction.replace(((ViewGroup)getView().getParent()).getId(), CreateAccountFragment.newInstance());
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
/**
* Remove all edit text errors
*/
private void clearErrors(){
mUserNameEditText.setError(null);
mPasswordEditText.setError(null);
}
@Subscribe
public void onSignInError(AuthenticateUserErrorEvent event){
clearErrors();
switch (event.getErrorCode()) {
case ParseException.OBJECT_NOT_FOUND:
mPasswordEditText.setError(getString(R.string.error_incorrect_password));
mPasswordEditText.requestFocus();
break;
default:
UnknownErrorDialogFactory.createUnknownErrorDialog(this.getActivity()).show();
break;
}
}
}
这是 XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
style="@style/LoginFormContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f1c40f"
android:orientation="vertical" >
<EditText
android:id="@+id/username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/usernameHint"
android:maxLines="1"
android:singleLine="true" />
<EditText
android:id="@+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/prompt_password"
android:imeActionId="@+id/login"
android:imeActionLabel="@string/action_sign_in_short"
android:imeOptions="actionUnspecified"
android:inputType="textPassword"
android:maxLines="1"
android:singleLine="true" />
<Button
android:id="@+id/sign_in_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:text="@string/action_sign_in_short" />
<TextView
android:id="@+id/orTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:text="@string/orText" />
<Button
android:id="@+id/register_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:text="@string/action_register" />
</LinearLayout>
这是基本片段类
package com.keyconsultant.parse.logintutorial.fragment;
import com.squareup.otto.BusProvider;
import android.support.v4.app.Fragment;
/**
* Fragment class that resolves basic service bus requirement (Register, deregister, Event Posting)
*
* @author Trey Robinson
*
*/
public class BaseFragment extends Fragment {
@Override
public void onResume() {
super.onResume();
BusProvider.getInstance().register(this);
}
@Override
public void onPause() {
/**fragment must be removed from the service bus in onPause or an error will occur
when the bus attempts to dispatch an event to the paused activity. **/
BusProvider.getInstance().unregister(this);
super.onPause();
}
/**
* Post the event to the service bus
* @param event
* The event to dispatch on the service bus
*/
protected void postEvent(Object event) {
BusProvider.getInstance().post(event);
}
}
这是我添加 LOGINFRAGMENT 类的代码
package com.keyconsultant.parse.logintutorial;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import com.keyconsultant.parse.logintutorial.activity.BaseActivity;
import com.keyconsultant.parse.logintutorial.forgotpassword.ForgotPasswordDialogFragment;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.AuthenticateUserErrorEvent;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.AuthenticateUserStartEvent;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.AuthenticateUserSuccessEvent;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.UserForgotPasswordErrorEvent;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.UserForgotPasswordStartEvent;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.UserForgotPasswordSuccessEvent;
import com.parse.Parse;
import com.squareup.otto.Subscribe;
/**
* Activity which displays a login screen to the user, offering registration as
* well. Based loosley on the default Login template.
*
* @author Trey Robinson
*/
public class LoginActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
Parse.initialize(this, "Your App Id", "Your Client ID");
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.main_view, LoginFragment.newInstance());
fragmentTransaction.commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.activity_login, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.menu_forgot_password:
forgotPassword();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/**
* Open the forgotPassword dialog
*/
private void forgotPassword(){
FragmentManager fm = getSupportFragmentManager();
ForgotPasswordDialogFragment forgotPasswordDialog = new ForgotPasswordDialogFragment();
forgotPasswordDialog.show(fm, null);
}
@Subscribe
public void onSignInStart(AuthenticateUserStartEvent event){
showProgress(true, getString(R.string.login_progress_signing_in));
}
@Subscribe
public void onSignInSuccess(AuthenticateUserSuccessEvent event){
showProgress(false, getString(R.string.login_progress_signing_in));
Intent loginSuccess = new Intent(this, MainActivity.class);
startActivity(loginSuccess);
finish();
}
@Subscribe
public void onSignInError(AuthenticateUserErrorEvent event){
showProgress(false, getString(R.string.login_progress_signing_in));
}
@Subscribe
public void onForgotPasswordStart(UserForgotPasswordStartEvent event){
showProgress(true, getString(R.string.login_progress_signing_in));
}
@Subscribe
public void onForgotPasswordSuccess(UserForgotPasswordSuccessEvent event){
showProgress(false,getString(R.string.login_progress_signing_in));
Toast toast =Toast.makeText(this, "A password reset email has been sent.", Toast.LENGTH_LONG);
toast.show();
}
@Subscribe
public void onForgotPasswordError(UserForgotPasswordErrorEvent event){
showProgress(false, getString(R.string.login_progress_signing_in));
Toast toast =Toast.makeText(this, "An error has occured. Please try again.", Toast.LENGTH_LONG);
toast.show();
}
}
fragment_create_account
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
style="@style/LoginFormContainer" >
<EditText
android:id="@+id/etUsername"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="25dp"
android:hint="@string/usernameHint"
android:inputType="text"
android:maxLength="15" />
<EditText
android:id="@+id/etEmail"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_below="@id/etUsername"
android:layout_centerHorizontal="true"
android:layout_marginTop="25dp"
android:hint="@string/emailHint"
android:inputType="textEmailAddress" />
<EditText
android:id="@+id/etPassword"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_below="@id/etEmail"
android:layout_centerHorizontal="true"
android:layout_marginTop="25dp"
android:hint="@string/passwordHint"
android:inputType="textPassword"
android:maxLength="10" />
<EditText
android:id="@+id/etPasswordConfirm"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_below="@id/etPassword"
android:layout_centerHorizontal="true"
android:layout_marginTop="25dp"
android:hint="@string/confirmPasswordHint"
android:inputType="textPassword" />
<Button
android:id="@+id/btnCreateAccount"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_alignRight="@id/etPassword"
android:layout_below="@id/etPasswordConfirm"
android:layout_marginTop="25dp"
android:text="@string/createAccount" />
</RelativeLayout>
CreateAccountFragment 类
package com.keyconsultant.parse.logintutorial;
import java.util.Locale;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import com.keyconsultant.parse.logintutorial.error.UnknownErrorDialogFactory;
import com.keyconsultant.parse.logintutorial.fragment.BaseFragment;
import com.keyconsultant.parse.logintutorial.model.user.UserManager;
import com.keyconsultant.parse.logintutorial.model.user.authenticate.AuthenticateUserErrorEvent;
import com.parse.ParseException;
import com.squareup.otto.Subscribe;
/**
* Create an Account. Username is the primary method of login. Email is used for forgotten password recovery.
*
* @author Trey Robinson
*
*/
public class CreateAccountFragment extends BaseFragment implements OnClickListener {
protected static final String EXTRA_EMAIL = "com.keyconsultant.parse.logintutorial.fragment.extra.EMAIL";
protected static final String EXTRA_USERNAME = "com.keyconsultant.parse.logintutorial.fragment.extra.USERNAME";
protected static final String EXTRA_PASSWORD = "com.keyconsultant.parse.logintutorial.fragment.extra.PASSWORD";
protected static final String EXTRA_CONFIRM = "com.keyconsultant.parse.logintutorial.fragment.extra.CONFIRMPASSWORD";
private EditText mUserNameEditText;
private EditText mEmailEditText;
private EditText mPasswordEditText;
private EditText mConfirmPasswordEditText;
private Button mCreateAccountButton;
private String mEmail;
private String mUsername;
private String mPassword;
private String mConfirmPassword;
/**
* Factory method for creating fragment instances.
* @return
*/
public static CreateAccountFragment newInstance(){
return new CreateAccountFragment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_create_account, container, false);
mUserNameEditText = (EditText)view.findViewById(R.id.etUsername);
mEmailEditText = (EditText)view.findViewById(R.id.etEmail);
mPasswordEditText = (EditText)view.findViewById(R.id.etPassword);
mConfirmPasswordEditText = (EditText)view.findViewById(R.id.etPasswordConfirm);
mCreateAccountButton = (Button)view.findViewById(R.id.btnCreateAccount);
mCreateAccountButton.setOnClickListener(this);
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if(savedInstanceState != null){
mEmailEditText.setText(savedInstanceState.getString(EXTRA_EMAIL));
mUserNameEditText.setText(savedInstanceState.getString(EXTRA_USERNAME));
mPasswordEditText.setText(savedInstanceState.getString(EXTRA_PASSWORD));
mConfirmPasswordEditText.setText(savedInstanceState.getString(EXTRA_CONFIRM));
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(EXTRA_EMAIL, mEmailEditText.getText().toString());
outState.putString(EXTRA_USERNAME, mUserNameEditText.getText().toString());
outState.putString(EXTRA_PASSWORD, mPasswordEditText.getText().toString());
outState.putString(EXTRA_CONFIRM, mConfirmPasswordEditText.getText().toString());
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnCreateAccount:
createAccount();
break;
default:
break;
}
}
/**
* Some front end validation is done that is not monitored by the service.
* If the form is complete then the information is passed to the service.
*/
private void createAccount(){
clearErrors();
boolean cancel = false;
View focusView = null;
// Store values at the time of the login attempt.
mEmail = mEmailEditText.getText().toString();
mUsername = mUserNameEditText.getText().toString();
mPassword = mPasswordEditText.getText().toString();
mConfirmPassword = mConfirmPasswordEditText.getText().toString();
// Check for a valid confirm password.
if (TextUtils.isEmpty(mConfirmPassword)) {
mConfirmPasswordEditText.setError(getString(R.string.error_field_required));
focusView = mConfirmPasswordEditText;
cancel = true;
} else if (mPassword != null && !mConfirmPassword.equals(mPassword)) {
mPasswordEditText.setError(getString(R.string.error_invalid_confirm_password));
focusView = mPasswordEditText;
cancel = true;
}
// Check for a valid password.
if (TextUtils.isEmpty(mPassword)) {
mPasswordEditText.setError(getString(R.string.error_field_required));
focusView = mPasswordEditText;
cancel = true;
} else if (mPassword.length() < 4) {
mPasswordEditText.setError(getString(R.string.error_invalid_password));
focusView = mPasswordEditText;
cancel = true;
}
// Check for a valid email address.
if (TextUtils.isEmpty(mEmail)) {
mEmailEditText.setError(getString(R.string.error_field_required));
focusView = mEmailEditText;
cancel = true;
} else if (!mEmail.contains("@")) {
mEmailEditText.setError(getString(R.string.error_invalid_email));
focusView = mEmailEditText;
cancel = true;
}
if (cancel) {
// There was an error; don't attempt login and focus the first
// form field with an error.
focusView.requestFocus();
} else {
// Show a progress spinner, and kick off a background task to
// perform the user login attempt.
UserManager.getInstance().signUp(mUsername.toLowerCase(Locale.getDefault()), mEmail, mPassword);
}
}
/**
* Remove error messages from all fields.
*/
private void clearErrors(){ mEmailEditText.setError(null);
mUserNameEditText.setError(null);
mPasswordEditText.setError(null);
mConfirmPasswordEditText.setError(null);
}
@Subscribe
public void onSignInError(AuthenticateUserErrorEvent event){
clearErrors();
switch (event.getErrorCode()) {
case ParseException.INVALID_EMAIL_ADDRESS:
mEmailEditText.setError(getString(R.string.error_invalid_email));
mEmailEditText.requestFocus();
break;
case ParseException.EMAIL_TAKEN:
mEmailEditText.setError(getString(R.string.error_duplicate_email));
mEmailEditText.requestFocus();
break;
case ParseException.USERNAME_TAKEN:
mUserNameEditText.setError(getString(R.string.error_duplicate_username));
mUserNameEditText.requestFocus();
break;
default:
UnknownErrorDialogFactory.createUnknownErrorDialog(this.getActivity()).show();
break;
}
}
}