用户登录界面

来源：互联网发布：宇宙以知最大的星球编辑：程序博客网时间：2024/05/17 20:37
(1)在layout下新建一个名为login_top.xml的文件,具体代码如下：
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    ndroid:layout_height="wrap_content"    android:padding="@dimen/activity_horizontal_margin"    android:background="@drawable/logintop_roundbg"><EditText        
android:id="@+id/etName"        
android:layout_width="match_parent"        android:layout_height="wrap_content"        
android:ems="10"        android:background="@android:drawable/edit_text"        android:drawableLeft="@drawable/icon_user"        android:drawablePadding="10dp"        
android:hint="@string/etName" >
<requestFocus/>
</EditText><EditText        
android:id="@+id/etPassword"        android:layout_below="@id/etName"        android:inputType="textPassword"        android:layout_width="match_parent"        android:layout_height="wrap_content"        
android:ems="10"        android:background="@android:drawable/edit_text"        android:drawableLeft="@drawable/icon_pass"        android:drawablePadding="10dp"        
android:hint="@string/etPass" >
<requestFocus/>
</EditText><LinearLayout       
android:layout_below="@id/etPassword"        android:layout_width="match_parent"        android:layout_height="wrap_content"><CheckBox            
android:text="记住密码"            
android:layout_width="0dp"            android:layout_height="wrap_content"            android:id="@+id/cbIsRememberPass"            android:textSize="20sp"            
android:layout_weight="1"/>
 /><Button            
android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:background="@drawable/btn_select"            android:onClick="login"            
android:text="登录"/>
</LinearLayout>

</RelativeLayout>（2）在layout下新建一个名为activity_login.xml的文件,具体代码如下：
 
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_login"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:background="@drawable/loginbg"    tools:context="cn.edu.bzu.a01.LoginActivity"><include layout="@layout/login_top"></include><ImageView  android:layout_width="wrap_content"     android:layout_height="wrap_content"     app:srcCompat="@drawable/deer"     
android:id="@+id/imageView"     android:layout_alignParentBottom="true"     android:layout_alignParentRight="true"     android:layout_alignParentEnd="true"     android:layout_marginRight="12dp"     android:layout_marginEnd="12dp"     android:layout_marginBottom="32dp" /></RelativeLayout>
（3）在layout下新建一个名为activity_main.xml的文件，具体代码如下：
 
<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="cn.edu.bzu.a01.MainActivity"><TextView        
android:text="Welcome you"        
android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerVertical="true"        android:layout_centerHorizontal="true"        android:textSize="40sp"        
android:id="@+id/textView" />
</RelativeLayout>（4）在drawable下新建一个名为btn_select.xml的文件,具体代码如下：
<?xml version="1.0" encoding="utf-8"?>
<selector 
xmlns:android="http://schemas.android.com/apk/res/android"><item 
android:drawable="@drawable/btn_shape" android:state_pressed="false">
</item><item 
android:drawable="@drawable/btn_shape_after" android:state_pressed="true">
</item></selector>（5）在drawable下新建一个名为btn_shape.xml的文件,具体代码如下：
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid 
android:color="#FF72CAE1">
</solid><corners
android:radius="10dp">
</corners></shape>（6）在drawable下新建一个名为loginbg.xml的文件,具体代码如下：
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient        
android:startColor="#FFACDAE5"        
android:endColor="#FF72CAE1"        
android:angle="45"  />
 
</shape>
（7）在drawable下新建一个名为logintop_roundbg.xml的文件,具体代码如下：<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <corners android:radius="10dp"></corners>
    <solid android:color="#55FFFFFF"></solid>
</shape>（8）在values下的strings.xml文件中，具体代码如下：
<resources>
    <string name="app_name">01</string>
    <string name="etName">请输入账号</string>
    <string name="etPass">请输入密码</string>
    <string name="btnLogin">登录</string>
    <string name="btnRegister">注册</string>
</resources>
（9）在java下的LoginActivity文件下：
 
package cn.edu.bzu.a01;
import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;
public class LoginActivity extends AppCompatActivity {
    private EditText etName;
    private EditText etPassword;
    private CheckBox cbIsRememberPass;
    private SharedPreferences sharedPreferences;
 
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
 
        initView();
              sharedPreferences=getSharedPreferences("data", Context.MODE_PRIVATE);
        boolean isRemember=sharedPreferences.getBoolean("remamberpassword",false);
        if (isRemember){
            String name=sharedPreferences.getString("name","");
            String password=sharedPreferences.getString("password","");
            etName.setText(name);
            etPassword.setText(password);
            cbIsRememberPass.setChecked(true);
        }
 
    }
 
    private void initView() {
        etName= (EditText) findViewById(R.id.etName);
        etPassword= (EditText) findViewById(R.id.etPassword);
        cbIsRememberPass= (CheckBox) findViewById(R.id.cbIsRememberPass);
 
    }
 
    public void login(View view){
        String name=etName.getText().toString();
        String password=etPassword.getText().toString();
        if("admin".equals(name)&&"123456".equals(password)){
            SharedPreferences.Editor editor=sharedPreferences.edit();
            if(cbIsRememberPass.isChecked()){
                editor.putBoolean("remamberpassword",true);
                editor.putString("name",name);
                editor.putString("password",password);
 
            }else{
                editor.clear();
            }
               editor.commit();
            Intent intent=new Intent(this,MainActivity.class);                                          startActivity(intent);
            finish();
 
        }else{
            Toast.makeText(this, "账号或密码错误", Toast.LENGTH_SHORT).show();
        }
 
    }
}
（10）在java下新建一个Activity-MainActivity文件，具体代码如下：
 
package cn.edu.bzu.a01;
import android.support.v7.app.AppCompatActivity;import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
 
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}








1.请输入账号密码








2.成功登陆页面



3.记住密码
0 0