Android项目实战系列—基于博学谷（四）我的模块（下）

由于这个模块内容较多,篇幅较长，请耐心阅读。

“我”的模块分为四个部分

• [ ] 我的界面
• [ ] 设置界面
• [x] 修改密码界面
• [x] 设置密保和找回密码

一、修改密码

1、创建修改密码界面

在com.boxuegu.activity包中，创建一个java类，命名为ModifyPswActivity。在res/layout文件夹下创建布局文件，命名为activity_modify_psw。

2、修改密码界面代码——activity_modify_psw.xml

1<?xml version="1.0" encoding="utf-8"?>
2<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3    android:orientation="vertical"
4    android:layout_width="match_parent"
5    android:layout_height="match_parent"
6    android:background="@drawable/register_bg">
7    <include layout="@layout/main_title_bar"/>
8    <EditText
9        android:id="@+id/et_original_psw"
10        android:layout_width="fill_parent"
11        android:layout_height="48dp"
12        android:layout_gravity="center_horizontal"
13        android:layout_marginLeft="35dp"
14        android:layout_marginRight="35dp"
15        android:layout_marginTop="35dp"
16        android:background="@drawable/register_user_name_bg"
17        android:drawableLeft="@drawable/psw_icon"
18        android:drawablePadding="10dp"
19        android:gravity="center_vertical"
20        android:hint="请输入原始密码"
21        android:inputType="textPassword"
22        android:paddingLeft="8dp"
23        android:textColor="#000000"
24        android:textColorHint="#a3a3a3"
25        android:textSize="14sp"/>
26    <EditText
27        android:id="@+id/et_new_psw"
28        android:layout_width="fill_parent"
29        android:layout_height="48dp"
30        android:layout_gravity="center_horizontal"
31        android:layout_marginLeft="35dp"
32        android:layout_marginRight="35dp"
33        android:background="@drawable/register_psw_bg"
34        android:drawableLeft="@drawable/psw_icon"
35        android:drawablePadding="10dp"
36        android:hint="请输入新密码"
37        android:inputType="textPassword"
38        android:paddingLeft="8dp"
39        android:singleLine="true"
40        android:textColor="#000000"
41        android:textColorHint="#a3a3a3"
42        android:textSize="14sp"/>
43    <EditText
44        android:id="@+id/et_new_psw_again"
45        android:layout_width="fill_parent"
46        android:layout_height="48dp"
47        android:layout_gravity="center_horizontal"
48        android:layout_marginLeft="35dp"
49        android:layout_marginRight="35dp"
50        android:background="@drawable/register_psw_again_bg"
51        android:drawableLeft="@drawable/psw_icon"
52        android:drawablePadding="10dp"
53        android:hint="请再次输入新密码"
54        android:inputType="textPassword"
55        android:paddingLeft="8dp"
56        android:singleLine="true"
57        android:textColor="#000000"
58        android:textColorHint="#a3a3a3"
59        android:textSize="14sp"/>
60    <Button
61        android:id="@+id/btn_save"
62        android:layout_width="fill_parent"
63        android:layout_height="40dp"
64        android:layout_gravity="center_horizontal"
65        android:layout_marginLeft="35dp"
66        android:layout_marginRight="35dp"
67        android:layout_marginTop="15dp"
68        android:background="@drawable/register_selector"
69        android:text="保存"
70        android:textColor="@android:color/white"
71        android:textSize="18sp"/>
72</LinearLayout>
73

3、修改密码界面逻辑代码——ModifyPswActivity.java

1package com.boxuegu.activity;
2
3import android.content.Intent;
4import android.content.SharedPreferences;
5import android.content.pm.ActivityInfo;
6import com.boxuegu.R;
7import com.boxuegu.utils.AnalysisUtils;
8import com.boxuegu.utils.MD5Utils;
9import android.os.Bundle;
10import android.support.v7.app.AppCompatActivity;
11import android.text.TextUtils;
12import android.view.View;
13import android.widget.Button;
14import android.widget.EditText;
15import android.widget.TextView;
16import android.widget.Toast;
17
18public class ModifyPswActivity extends AppCompatActivity {
19    private TextView tv_main_title;
20    private TextView tv_back;
21    private EditText et_original_psw, et_new_psw, et_new_psw_again;
22    private Button btn_save;
23    private String originalPsw, newPsw, newPswAgain;
24    private String userName;
25    @Override
26    protected void onCreate(Bundle savedIntanceState){
27        super.onCreate(savedIntanceState);
28        //设置界面布局
29        setContentView(R.layout.activity_modify_psw);
30        //设置界面为竖屏
31        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
32        init();
33        userName = AnalysisUtils.readLoginUserName(this);
34    }
35
36    //获取界面控件并处理相关控件的点击事件
37    private void init(){
38        tv_main_title = (TextView) findViewById(R.id.tv_main_title);
39        tv_main_title.setText("修改密码");
40        tv_back = (TextView) findViewById(R.id.tv_back);
41        et_original_psw = (EditText) findViewById(R.id.et_original_psw);
42        et_new_psw = (EditText) findViewById(R.id.et_new_psw);
43        et_new_psw_again = (EditText) findViewById(R.id.et_new_psw_again);
44        btn_save = (Button) findViewById(R.id.btn_save);
45        tv_back.setOnClickListener(new View.OnClickListener() {
46            @Override
47            public void onClick(View v) {
48                ModifyPswActivity.this.finish();
49            }
50        });
51        
52        //保存按钮的点击事件
53        btn_save.setOnClickListener(new View.OnClickListener(){
54            @Override
55            public void onClick(View v) {
56                getEditString();
57                if (TextUtils.isEmpty(originalPsw)) {
58                    Toast.makeText(ModifyPswActivity.this, "请输入原始密码",
59                            Toast.LENGTH_SHORT).show();
60                    return;
61                }else if (!MD5Utils.md5(originalPsw).equals(readPsw())) {
62                    Toast.makeText(ModifyPswActivity.this, "输入的密码与原始密码不一致",
63                            Toast.LENGTH_SHORT).show();
64                    return;
65                }else if (MD5Utils.md5(newPsw).equals(readPsw())) {
66                    Toast.makeText(ModifyPswActivity.this, "输入的新密码与原始的密码不能一致",
67                            Toast.LENGTH_SHORT).show();
68                    return;
69                }else if (TextUtils.isEmpty(newPsw)) {
70                    Toast.makeText(ModifyPswActivity.this, "请输入新密码",
71                            Toast.LENGTH_SHORT).show();
72                    return;
73                }else if (TextUtils.isEmpty(newPswAgain)) {
74                    Toast.makeText(ModifyPswActivity.this, "请再次输入新密码",
75                            Toast.LENGTH_SHORT).show();
76                    return;
77                }else if (!newPsw.equals(newPswAgain)) {
78                    Toast.makeText(ModifyPswActivity.this, "两次输入的新密码不一致",
79                            Toast.LENGTH_SHORT).show();
80                    return;
81                } else {
82                    Toast.makeText(ModifyPswActivity.this,"新密码设置成功",
83                            Toast.LENGTH_SHORT).show();
84                    modifyPsw(newPsw);
85                    Intent intent = new Intent(ModifyPswActivity.this, LoginActivity.class);
86                    startActivity(intent);
87                    SettingActivity.instance.finish();   //关闭设置界面
88                    ModifyPswActivity.this.finish();  //关闭本界面
89                }
90            }
91        });
92    }
93
94    //获取控件上的字符串
95    private void getEditString(){
96        originalPsw = et_original_psw.getText().toString().trim();
97        newPsw = et_new_psw.getText().toString().trim();
98        newPswAgain=et_new_psw_again.getText().toString().trim();
99    }
100    
101    //修改登录成功时保存在SharedPreferences中的密码
102    private void modifyPsw(String newPsw){
103        String md5Psw = MD5Utils.md5(newPsw);
104        SharedPreferences sp = getSharedPreferences("loginInfo",MODE_PRIVATE);
105        SharedPreferences.Editor editor = sp.edit();  //获取编辑器
106        editor.putString(userName,md5Psw);   //保存新密码
107        editor.commit();   //提交修改
108    }
109
110    //从SharedPreferences中读取原始密码
111    private String readPsw(){
112        SharedPreferences sp = getSharedPreferences("loginInfo", MODE_PRIVATE);
113        String spPsw = sp.getString(userName, "");
114        return spPsw;
115    }
116}

4、修改设置界面代码

在设置界面逻辑代码（SettingActivity.java）文件中找到init方法，在注释//跳转到修改密码的界面下方添加如下代码

1Intent intent = new Intent(SettingActivity.this,ModifyPswActivity.class);
2startActivity(intent);

二、设置密保和找回密码

1、创建设置密保和找回密码界面

在com.boxuegu.activity包中，创建一个java类，命名为FindPswActivity。在res/layout文件夹下创建布局文件，命名为activity_find_psw。将所需图片find_psw_icon.png导入drawable文件夹中。

2、创建设置密保和找回密码界面界面代码——activity_find_psw.xml

1<?xml version="1.0" encoding="utf-8"?>
2<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3    android:orientation="vertical"
4    android:layout_width="match_parent"
5    android:layout_height="match_parent"
6    android:background="@drawable/login_bg">
7    <include layout="@layout/main_title_bar"/>
8    <TextView
9        android:id="@+id/tv_user_name"
10        android:layout_width="fill_parent"
11        android:layout_height="wrap_content"
12        android:layout_marginLeft="35dp"
13        android:layout_marginRight="35dp"
14        android:layout_marginTop="35dp"
15        android:text="您的用户名是?"
16        android:textColor="@android:color/white"
17        android:textSize="18sp"
18        android:visibility="gone"/>
19    <EditText
20        android:id="@+id/et_user_name"
21        android:layout_width="fill_parent"
22        android:layout_height="48dp"
23        android:layout_marginLeft="35dp"
24        android:layout_marginRight="35dp"
25        android:layout_marginTop="10dp"
26        android:background="@drawable/find_psw_icon"
27        android:hint="请输入您的用户名"
28        android:paddingLeft="8dp"
29        android:singleLine="true"
30        android:textColor="#000000"
31        android:textColorHint="#a3a3a3"
32        android:visibility="gone"/>
33    <TextView
34        android:layout_width="fill_parent"
35        android:layout_height="wrap_content"
36        android:layout_marginLeft="35dp"
37        android:layout_marginRight="35dp"
38        android:layout_marginTop="15dp"
39        android:text="您的姓名是?"
40        android:textColor="@android:color/white"
41        android:textSize="18sp"/>
42    <EditText
43        android:id="@+id/et_validate_name"
44        android:layout_width="fill_parent"
45        android:layout_height="48dp"
46        android:layout_marginLeft="35dp"
47        android:layout_marginRight="35dp"
48        android:layout_marginTop="10dp"
49        android:background="@drawable/find_psw_icon"
50        android:hint="请输入要验证的姓名"
51        android:paddingLeft="8dp"
52        android:singleLine="true"
53        android:textColor="#000000"
54        android:textColorHint="#a3a3a3"/>
55    <TextView
56        android:id="@+id/tv_reset_psw"
57        android:layout_width="fill_parent"
58        android:layout_height="wrap_content"
59        android:layout_marginLeft="35dp"
60        android:layout_marginRight="35dp"
61        android:layout_marginTop="10dp"
62        android:gravity="center_vertical"
63        android:textColor="@android:color/white"
64        android:textSize="15sp"
65        android:visibility="gone"/>
66    <Button
67        android:id="@+id/btn_validate"
68        android:layout_width="fill_parent"
69        android:layout_height="40dp"
70        android:layout_gravity="center_horizontal"
71        android:layout_marginLeft="35dp"
72        android:layout_marginRight="35dp"
73        android:layout_marginTop="15dp"
74        android:background="@drawable/register_selector"
75        android:text="验证"
76        android:textColor="@android:color/white"
77        android:textSize="18sp"/>
78
79</LinearLayout>
80

3、设置密保和找回密码界面逻辑代码

1package com.boxuegu.activity;
2
3import android.content.SharedPreferences;
4import android.content.pm.ActivityInfo;
5import android.support.v7.app.AppCompatActivity;
6import android.os.Bundle;
7import android.text.TextUtils;
8import android.view.View;
9import android.widget.Button;
10import android.widget.EditText;
11import android.widget.TextView;
12import android.widget.Toast;
13import com.boxuegu.R;
14import com.boxuegu.utils.AnalysisUtils;
15import com.boxuegu.utils.MD5Utils;
16
17public class FindPswActivity extends AppCompatActivity {
18
19	//form为security时从设置密保界面跳转过来，否则就从登录界面跳转过来的
20    private String from;
21    private TextView tv_main_title;
22    private TextView tv_back;
23    private Button btn_validate;
24    private EditText et_validate_name;
25    private TextView tv_reset_psw;
26    private EditText et_user_name;
27    private TextView tv_user_name;
28
29    @Override
30    protected void onCreate(Bundle savedInstanceState) {
31        super.onCreate(savedInstanceState);
32        //设置界面布局
33        setContentView(R.layout.activity_find_psw);
34        //设置界面为竖屏
35        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
36        from = getIntent().getStringExtra("from");
37        init();
38    }
39
40    //获取界面控件及处理相应控件的点击事件
41    private void init() {
42        tv_main_title = (TextView) findViewById(R.id.tv_main_title);
43        tv_back = (TextView) findViewById(R.id.tv_back);
44        et_validate_name = (EditText) findViewById(R.id.et_validate_name);
45        btn_validate = (Button) findViewById(R.id.btn_validate);
46        tv_reset_psw = (TextView) findViewById(R.id.tv_reset_psw);
47        et_user_name = (EditText) findViewById(R.id.et_user_name);
48        tv_user_name = (TextView) findViewById(R.id.tv_user_name);
49        if ("security".equals(from)){
50            tv_main_title.setText("设置密保");
51        }else{
52            tv_main_title.setText("找回密码");
53            tv_user_name.setVisibility(View.VISIBLE);
54            et_user_name.setVisibility(View.VISIBLE);
55        }
56        tv_back.setOnClickListener(new View.OnClickListener() {
57            @Override
58            public void onClick(View view) {
59                FindPswActivity.this.finish();
60            }
61        });
62        btn_validate.setOnClickListener(new View.OnClickListener() {
63            @Override
64            public void onClick(View view) {
65                String validateName = et_validate_name.getText().toString().trim();
66                if ("security".equals(from)){  //设置密保
67                    if (TextUtils.isEmpty(validateName)){
68                        Toast.makeText(FindPswActivity.this,"请输入要验证的姓名",
69                                Toast.LENGTH_SHORT).show();
70                        return;
71                    }else{
72                        Toast.makeText(FindPswActivity.this,"密保设置成功",
73                                Toast.LENGTH_SHORT).show();
74                        //保存密保到SharedPreferences中
75                        saveSecurity(validateName);
76                        FindPswActivity.this.finish();
77                    }
78                }else{  //找回密码
79                    String userName = et_user_name.getText().toString().trim();
80                    String sp_security = readSecurity(userName);
81                    if (TextUtils.isEmpty(userName)){
82                        Toast.makeText(FindPswActivity.this,"请输入您的用户名",
83                                Toast.LENGTH_SHORT).show();
84                        return;
85                    }else if (!isExistUserName(userName)){
86                        Toast.makeText(FindPswActivity.this,"您输入的用户名不存在",
87                                Toast.LENGTH_SHORT).show();
88                        return;
89                    }else if (TextUtils.isEmpty(validateName)){
90                        Toast.makeText(FindPswActivity.this,"请输入要验证的姓名",
91                                Toast.LENGTH_SHORT).show();
92                        return;
93                    }if (!validateName.equals(sp_security)){
94                        Toast.makeText(FindPswActivity.this,"输入的密保不正确",
95                                Toast.LENGTH_SHORT).show();
96                        return;
97                    }else{
98                    	//输入的密保正确，重新给用户设置一个密码：123456
99                        tv_reset_psw.setVisibility(View.VISIBLE);
100                        tv_reset_psw.setText("初始密码：123456");
101                        savePsw(userName);
102                    }
103                }
104            }
105        });
106    }
107
108    //保存初始化的密码
109    private void savePsw(String userName){
110        String md5Psw = MD5Utils.md5("123456");  //密码MD5加密
111        SharedPreferences sp = getSharedPreferences("loginInfo",MODE_PRIVATE);
112        SharedPreferences.Editor editor = sp.edit();  //获取编辑器
113        editor.putString(userName,md5Psw);
114        editor.commit();   //提交修改
115    } 
116    
117    
118    private void saveSecurity(String validateName){
119        SharedPreferences sp = getSharedPreferences("loginInfo",MODE_PRIVATE);
120        SharedPreferences.Editor editor = sp.edit();  //获取编辑器
121         //存入对应账户的密保
122        editor.putString(AnalysisUtils.readLoginUserName(this)+"_security",validateName);
123        editor.commit();  //提交修改
124    } 
125
126  //从SharedPreferences中读取密保
127    private String readSecurity(String userName){
128        SharedPreferences sp = getSharedPreferences("loginInfo",MODE_PRIVATE);
129        String security = sp.getString(userName+"_security","");
130        return security;
131    }
132    
133    //从SharedPreferences中根据用户输入的用户名来判断是否有这个用户
134    private boolean isExistUserName(String userName){
135        boolean hasUserName = false;
136        SharedPreferences sp = getSharedPreferences("loginInfo",MODE_PRIVATE);
137        String spPsw = sp.getString(userName,"");
138        if (!TextUtils.isEmpty(spPsw)){
139            hasUserName=true;
140        }
141        return hasUserName;
142    }
143}

4、修改代码

（1）、修改登录界面

到登录界面逻辑代码（LoginActivity.java）文件夹中找到init方法。在注释//跳转到找回密码界面下方添加如下代码

1Intent intent = new Intent(LoginActivity.this, FindPswActivity.class);
2startActivity(intent);

（2）、修改设置界面

到设置界面逻辑代码（SettingActivity.java）文件夹中找到init方法。在注释//跳转到设置密保界面下方添加如下代码

1Intent intent = new Intent(SettingActivity.this,FindPswActivity.class);
2intent.putExtra("from","security");
3startActivity(intent);

Android项目实战系列—基于博学谷 开源地址