《Android项目实战-博学谷》设置密保&找回密码
设置密保&找回密码界面
思路
由于设置密保和找回密码两个界面十分相似,代码逻辑也十分相似,因此这两个界面可以使用同一个布局文件和同一个
Activity 来处理,首先导入所需图片资源文件,再创建 FindPswActivity ,将布局改为 LinearLayout
具体代码如下:
activity_find_psw.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/login_bg" android:orientation="vertical"> <include layout="@layout/main_title_bar" /> <!--先将设置密保部分隐藏,android:visibility="gone"--> <TextView android:id="@+id/tv_user_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="35dp" android:layout_marginRight="35dp" android:layout_marginTop="35dp" android:text="您的用户名是?" android:textColor="@android:color/white" android:textSize="18sp" android:visibility="gone" /> <EditText android:id="@+id/et_user_name" android:layout_width="fill_parent" android:layout_height="48dp" android:layout_marginLeft="35dp" android:layout_marginRight="35dp" android:layout_marginTop="10dp" android:background="@drawable/find_psw_icon" android:hint="请输入您的用户名" android:paddingLeft="8dp" android:singleLine="true" android:textColor="#000000" android:textColorHint="#a3a3a3" android:visibility="gone" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="35dp" android:layout_marginRight="35dp" android:layout_marginTop="15dp" android:text="您的姓名是?" android:textColor="@android:color/white" android:textSize="18sp" /> <EditText android:id="@+id/et_validate_name" android:layout_width="fill_parent" android:layout_height="48dp" android:layout_marginLeft="35dp" android:layout_marginRight="35dp" android:layout_marginTop="10dp" android:background="@drawable/find_psw_icon" android:hint="请输入要验证的姓名" android:paddingLeft="8dp" android:singleLine="true" android:textColor="#000000" android:textColorHint="#a3a3a3" /> <TextView android:id="@+id/tv_reset_psw" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="35dp" android:layout_marginRight="35dp" android:layout_marginTop="10dp" android:gravity="center_vertical" android:textColor="@android:color/white" android:textSize="15sp" android:visibility="gone" /> <Button android:id="@+id/btn_validate" android:layout_width="fill_parent" android:layout_height="40dp" android:layout_gravity="center_horizontal" android:layout_marginLeft="35dp" android:layout_marginRight="35dp" android:layout_marginTop="15dp" android:background="@drawable/register_selector" android:text="验证" android:textColor="@android:color/white" android:textSize="18sp" /> </LinearLayout>
设置密保&找回密码逻辑
思路
由于设置密保界面和找回密码界面用的同一个 Activity ,在这个Activity中主要是根据从设置界面和登录界面
putExtra 传递过来的 from 参数的值来判断要跳转到哪个界面,若值为 security 则是设置密保的界面,否则处理的就是找回密码的界面,完成设置密保&找回密码逻辑后再处理设置界面与登录界面的点击事件
具体代码如下:
FindPswActivity
package cn.edu.lt.android.boxueguapp.activity; import android.content.Context; import android.content.SharedPreferences; import android.content.pm.ActivityInfo; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.TextUtils; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import cn.edu.lt.android.boxueguapp.R; import cn.edu.lt.android.boxueguapp.utils.AnalysisUtils; import cn.edu.lt.android.boxueguapp.utils.MD5Utils; public class FindPswActivity extends AppCompatActivity { private EditText et_validate_name, et_user_name; private Button btn_validate; private TextView tv_main_title; private TextView tv_back; //从哪个界面跳转过来的(from为security时是从设置密保界面跳转过来的,否则就是从登录界面跳转过来的) private String from; private TextView tv_reset_psw, tv_user_name; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_find_psw); //设置此界面为竖屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); //获取从登录界面和设置界面传递过来的数据 from = getIntent().getStringExtra("from"); init(); } /** * 获取界面控件及处理相应控件的点击事件 */ private void init() { tv_main_title = (TextView) findViewById(R.id.tv_main_title); tv_back = (TextView) findViewById(R.id.tv_back); et_validate_name = (EditText) findViewById(R.id.et_validate_name); btn_validate = (Button) findViewById(R.id.btn_validate); tv_reset_psw = (TextView) findViewById(R.id.tv_reset_psw); et_user_name = (EditText) findViewById(R.id.et_user_name); tv_user_name = (TextView) findViewById(R.id.tv_user_name); if ("security".equals(from)) { tv_main_title.setText("设置密保"); } else { tv_main_title.setText("找回密码"); //将隐藏的控件显示出来 tv_user_name.setVisibility(View.VISIBLE); et_user_name.setVisibility(View.VISIBLE); } tv_back.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { FindPswActivity.this.finish(); } }); btn_validate.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String validateName = et_validate_name.getText().toString().trim(); if ("security".equals(from)) {//设置密保 if (TextUtils.isEmpty(validateName)) { Toast.makeText(FindPswActivity.this, "请输入要验证的姓名", Toast.LENGTH_SHORT).show(); return; } else { Toast.makeText(FindPswActivity.this, "密保设置成功", Toast.LENGTH_SHORT).show(); //保存密保到SharedPreferences saveSecurity(validateName); FindPswActivity.this.finish(); } } else {//找回密码 String userName = et_user_name.getText().toString().trim(); String sp_security = readSecurity(userName); if (TextUtils.isEmpty(userName)) { Toast.makeText(FindPswActivity.this, "请输入您的用户名", Toast.LENGTH_SHORT).show(); return; } else if (!isExistUserName(userName)) { Toast.makeText(FindPswActivity.this, "您输入的用户名不存在", Toast.LENGTH_SHORT).show(); return; } else if (TextUtils.isEmpty(validateName)) { Toast.makeText(FindPswActivity.this, "请输入要验证的姓名", Toast.LENGTH_SHORT).show(); return; } if (!validateName.equals(sp_security)) { Toast.makeText(FindPswActivity.this, "输入的密保不正确", Toast.LENGTH_SHORT).show(); return; } else { //输入的密保正确,重新给用户设置一个密码 tv_reset_psw.setVisibility(View.VISIBLE); tv_reset_psw.setText("初始密码:123456"); savePsw(userName); } } } }); } /** * 保存初始化密码 * @param userName */ private void savePsw(String userName) { String md5Psw = MD5Utils.md5("123456");//把密码用Md5加密 SharedPreferences sp = getSharedPreferences("loginInfo", MODE_PRIVATE);//loginInfo表示文件名 SharedPreferences.Editor editor = sp.edit();//获取编辑器 editor.putString(userName, md5Psw); editor.commit();//提交修改 } /** * 保存密保到SharedPreferences中 */ private void saveSecurity(String validateName) { SharedPreferences sp = getSharedPreferences("loginInfo", MODE_PRIVATE);//loginInfo表示文件名 SharedPreferences.Editor editor = sp.edit();//获取编辑器 editor.putString(AnalysisUtils.readLoginUserName(this) + "_security", validateName);//存入账号对应的密保 editor.commit();//提交修改 } /** * 从SharedPreferences中读取密保 */ private String readSecurity(String userName) { SharedPreferences sp = getSharedPreferences("loginInfo", Context.MODE_PRIVATE); String security = sp.getString(userName + "_security", ""); return security; } /** * 从SharedPreferences中根据用户输入的用户名来判断是否有此用户名 */ private boolean isExistUserName(String userName) { boolean hasUserName = false; SharedPreferences sp = getSharedPreferences("loginInfo", MODE_PRIVATE); String spPsw = sp.getString(userName, ""); if (!TextUtils.isEmpty(spPsw)) { hasUserName = true; } return hasUserName; } }
LoginActivity
//找回密码控件的点击事件 tv_find_psw.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //跳转找回密码界面 Intent intent=new Intent(LoginActivity.this,FindPswActivity.class); startActivity(intent); } });
SettingActivity
//设置密保的点击事件 rl_security_setting.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(SettingActivity.this, FindPswActivity.class); intent.putExtra("from", "security"); startActivity(intent); } });
优化
思路
为了界面美观以及操作的便捷,找回密码点击验证后,本需要手动回退到登录界面,现本人加入倒计时,倒计时截止时将自动跳转登录界面
FindPswActivity
private int countdown = 3;
//输入的密保正确,重新给用户设置一个密码 tv_reset_psw.setVisibility(View.VISIBLE); tv_reset_psw.setTextColor(0xffff0000); tv_reset_psw.setText("初始密码为123456"); tv_countdown.setVisibility(View.VISIBLE); tv_countdown.setAlpha(0.5f); tv_countdown.setText("此界面将在"+countdown+"秒后跳转"); savePsw(userName); //倒计时跳转 final Timer timer = new Timer(); TimerTask timerTask = new TimerTask() { @Override public void run() { runOnUiThread(new Runnable() { // UI thread @Override public void run() { countdown--; tv_countdown.setVisibility(View.VISIBLE); tv_countdown.setText("此界面将在"+countdown+"秒后跳转"); if(countdown == 0){ timer.cancel(); Intent intent = new Intent(FindPswActivity.this, LoginActivity.class); startActivity(intent); FindPswActivity.this.finish();//跳转后关闭当前页面 } } }); } }; timer.schedule(timerTask,1000,1000);
运行效果
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