LoginActivity.java

package com.wangdeqiang.www.chatwithrobot.BroadcastBestPractice;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.preference.PreferenceManager;import android.view.View;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;import com.wangdeqiang.www.chatwithrobot.R;import static com.wangdeqiang.www.chatwithrobot.R.id.account;/** * @author */public class LoginActivity extends BaseActivity {  private SharedPreferences pref;  private SharedPreferences.Editor editor;  private EditText accountEdit;  private EditText passwordEdit;  private Button login;  private CheckBox rememberPass;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_login);    pref = PreferenceManager.getDefaultSharedPreferences(this);    accountEdit = (EditText) findViewById(account);    passwordEdit = (EditText) findViewById(R.id.password);    rememberPass = (CheckBox) findViewById(R.id.remember_pass);    login = (Button) findViewById(R.id.login);    boolean isRemeber = pref.getBoolean("remember_password",false);    if(isRemeber) {      //将账号和密码都设置到文本框中      String account = pref.getString("account","");      String password = pref.getString("password","");      accountEdit.setText(account);      passwordEdit.setText(password);      rememberPass.setChecked(true);    }    login.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        String account = pref.getString("account", "").toString();        String password = pref.getString("password", "").toString();        //如果账号和密码是admin和123456,就认为登陆成功        if (account.equals("admin") && password.equals("123456")) {          editor = pref.edit();          if (rememberPass.isChecked()) {            editor.putBoolean("remember", false);            editor.putString("account", account);            editor.putString("password", password);          } else {            editor.apply();          }          editor.commit();          Intent intent = new Intent(LoginActivity.this, Main3Activity.class);          startActivity(intent);          finish();        } else {          Toast.makeText(LoginActivity.this, "密码或者账号错误", Toast.LENGTH_SHORT).show();        }      }    });    }   }

activity_login.xml