(1) 实现一个用户登录Activity,显示两个文本输入框和一个确认按钮,提示用户输入用户名和密码;(15分) (2) 当用户单击确认按钮后,启动另外一个Activity,显示用户的输入信息;(10分) (3) 在用户输入完用户名和密码,单击按钮后程序还可以将用户的输入信息保存在手机上。请写出完整代码
时间: 2024-03-12 20:45:38 浏览: 18
好的,下面是完整的代码:
1. 用户登录Activity
布局文件:activity_login.xml
```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:orientation="vertical"
android:padding="16dp">
<EditText
android:id="@+id/editText_username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入用户名" />
<EditText
android:id="@+id/editText_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入密码"
android:inputType="textPassword" />
<Button
android:id="@+id/button_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="确认登录" />
</LinearLayout>
```
Java文件:LoginActivity.java
```java
public class LoginActivity extends AppCompatActivity {
private EditText editTextUsername;
private EditText editTextPassword;
private Button buttonLogin;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
editTextUsername = findViewById(R.id.editText_username);
editTextPassword = findViewById(R.id.editText_password);
buttonLogin = findViewById(R.id.button_login);
buttonLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String username = editTextUsername.getText().toString();
String password = editTextPassword.getText().toString();
Intent intent = new Intent(LoginActivity.this, UserInfoActivity.class);
intent.putExtra("username", username);
intent.putExtra("password", password);
startActivity(intent);
}
});
}
}
```
2. 用户信息显示Activity
布局文件:activity_user_info.xml
```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:orientation="vertical"
android:padding="16dp">
<TextView
android:id="@+id/textView_username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp" />
<TextView
android:id="@+id/textView_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp" />
</LinearLayout>
```
Java文件:UserInfoActivity.java
```java
public class UserInfoActivity extends AppCompatActivity {
private TextView textViewUsername;
private TextView textViewPassword;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_info);
textViewUsername = findViewById(R.id.textView_username);
textViewPassword = findViewById(R.id.textView_password);
Intent intent = getIntent();
String username = intent.getStringExtra("username");
String password = intent.getStringExtra("password");
textViewUsername.setText("用户名:" + username);
textViewPassword.setText("密码:" + password);
}
}
```
3. 用户信息保存
Java文件:LoginActivity.java
```java
public class LoginActivity extends AppCompatActivity {
private EditText editTextUsername;
private EditText editTextPassword;
private Button buttonLogin;
private SharedPreferences sharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
editTextUsername = findViewById(R.id.editText_username);
editTextPassword = findViewById(R.id.editText_password);
buttonLogin = findViewById(R.id.button_login);
sharedPreferences = getSharedPreferences("user_info", MODE_PRIVATE);
buttonLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String username = editTextUsername.getText().toString();
String password = editTextPassword.getText().toString();
Intent intent = new Intent(LoginActivity.this, UserInfoActivity.class);
intent.putExtra("username", username);
intent.putExtra("password", password);
startActivity(intent);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("username", username);
editor.putString("password", password);
editor.apply();
}
});
}
}
```
这是完整的代码,可以根据自己的需要进行修改和调整。