package com.lincanbin.carbonforum;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.lincanbin.carbonforum.application.CarbonForumApplication;
import com.lincanbin.carbonforum.config.APIAddress;
import com.lincanbin.carbonforum.tools.VerificationCode;
import com.lincanbin.carbonforum.util.HttpUtil;
import com.lincanbin.carbonforum.util.JSONUtil;
import com.lincanbin.carbonforum.util.MD5Util;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
/**
* A login screen that offers login via username/password.
*/
public class LoginActivity extends AppCompatActivity {
/**
* Keep track of the login task to ensure we can cancel it if requested.
*/
private UserLoginTask mAuthTask = null;
// UI references.
private Toolbar mToolbar;
private EditText mUsernameView;
private EditText mPasswordView;
private EditText mVerificationCodeView;
private ImageView mVerificationCodeImageView;
private View mProgressView;
private View mLoginFormView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
if (mToolbar != null) {
mToolbar.setTitle(R.string.title_activity_login);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
// Set up the login form.
mUsernameView = (EditText) findViewById(R.id.username);
mPasswordView = (EditText) findViewById(R.id.password);
mVerificationCodeView = (EditText) findViewById(R.id.verification_code);
mVerificationCodeView.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
if (id == EditorInfo.IME_ACTION_DONE) {
attemptLogin();
return true;
}
return false;
}
});
mVerificationCodeImageView = (ImageView) findViewById(R.id.verification_code_img);
mVerificationCodeImageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
refreshVerificationCode();
}
});
refreshVerificationCode();
Button mUsernameSignInButton = (Button) findViewById(R.id.login_button);
mUsernameSignInButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
attemptLogin();
}
});
mLoginFormView = findViewById(R.id.login_form);
mProgressView = findViewById(R.id.login_progress);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void refreshVerificationCode(){
//接口回调的方法，完成验证码的异步读取与显示
VerificationCode verificationCodeImage = new VerificationCode(this);
verificationCodeImage.loadImage(new VerificationCode.ImageCallBack() {
@Override
public void getDrawable(Drawable drawable) {
mVerificationCodeImageView.setImageDrawable(drawable);
}
});
}
/**
* Attempts to sign in or register the account specified by the login form.
* If there are form errors (invalid username, missing fields, etc.), the
* errors are presented and no actual login attempt is made.
*/
public void attemptLogin() {
if (mAuthTask != null) {
return;
}
// Reset errors.
mUsernameView.setError(null);
mPasswordView.setError(null);
mVerificationCodeView.setError(null);
// Store values at the time of the login attempt.
String username = mUsernameView.getText().toString();
String password = mPasswordView.getText().toString();
String verification_code = mVerificationCodeView.getText().toString();
boolean cancel = false;
View focusView = null;
// Check for a valid password, if the user entered one.
if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) {
mPasswordView.setError(getString(R.string.error_invalid_password));
focusView = mPasswordView;
cancel = true;
}
// Check for a valid username address.
if (TextUtils.isEmpty(username)) {
mUsernameView.setError(getString(R.string.error_field_required));
focusView = mUsernameView;
cancel = true;
/*
} else if (!isUsernameValid(username)) {
mUsernameView.setError(getString(R.string.error_invalid_username));
focusView = mUsernameView;
cancel = true;
*/
}
// Check for a valid verification code.
if (TextUtils.isEmpty(verification_code)) {
mVerificationCodeView.setError(getString(R.string.error_field_required));
focusView = mVerificationCodeView;
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.
showProgress(true);
mAuthTask = new UserLoginTask(username, password, verification_code);
mAuthTask.execute((Void) null);
}
}
/*
private boolean isUsernameValid(String username) {
return username.contains("@");
}
*/
private boolean isPasswordValid(String password) {
return password.length() >= 3;
}
/**
* Shows the progress UI and hides the login form.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
public void showProgress(final boolean show) {
// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
// for very easy animations. If available, use these APIs to fade-in
// the progress spinner.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime);
mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
mLoginFormView.animate().setDuration(shortAnimTime).alpha(
show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
}
});
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
mProgressView.animate().setDuration(shortAnimTime).alpha(
show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
}
});
} else {
// The ViewPropertyAnimator APIs are not available, so simply show
// and hide the relevant UI components.
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
}
}
/**
* Represents an asynchronous login/registration task used to authenticate
* the user.
*/
public class UserLoginTask extends AsyncTask<Void, Void, JSONObject> {
private final Map<String, String> parameter = new HashMap<>();
UserLoginTask(String username, String password, String verification_code) {
parameter.put("UserName", username);
parameter.put("Password", MD5Util.md5(password));
parameter.put("VerifyCode", verification_code);
}
@Override
protected JSONObject doInBackground(Void... params) {
return HttpUtil.postRequest(LoginActivity.this, APIAddress.LOGIN_URL,parameter, true, false);
}
@Override
protected void onPostExecute(JSONObject result) {
mAuthTask = null;
showProgress(false);
if(result !=null) {
try {
//Log.v("JSON", result.toString());
if (result.getInt("Status") == 1) {
//Log.v("JSON", result.toString());
SharedPreferences.Editor editor = CarbonForumApplication.userInfo.edit();
editor.putString("UserID", result.getString("UserID"));
editor.putString("UserExpirationTime", result.getString("UserExpirationTime"));
editor.putString("UserCode", result.getString("UserCode"));
JSONObject userInfo = JSONUtil.jsonString2Object(result.getString("UserInfo"));
if(userInfo!=null){
editor.putString("UserName", userInfo.getString("UserName"));
editor.putString("UserRoleID", userInfo.getString("UserRoleID"));
editor.putString("UserMail", userInfo.getString("UserMail"));
editor.putString("UserIntro", userInfo.getString("UserIntro"));
}
editor.apply();
//发送广播刷新
Intent intent = new Intent();
intent.setAction("action.refreshDrawer");
LocalBroadcastManager.getInstance(LoginActivity.this).sendBroadcast(intent);
finish();
} else {
Toast.makeText(LoginActivity.this, result.getString("ErrorMessage"), Toast.LENGTH_SHORT).show();
refreshVerificationCode();
switch(result.getInt("ErrorCode")){
case 101001:
case 101003:
mUsernameView.setError(result.getString("ErrorMessage"));
mUsernameView.requestFocus();
break;
case 101004:
mPasswordView.setError(result.getString("ErrorMessage"));
mPasswordView.requestFocus();
break;
case 101002:
mVerificationCodeView.setError(result.getString("ErrorMessage"));
mVerificationCodeView.requestFocus();
break;
default:
}
}
} catch (Exception e) {
e.printStackTrace();
}
}else{
Snackbar.make(mLoginFormView, R.string.network_error, Snackbar.LENGTH_LONG).setAction("Action", null).show();
}
}
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
}