登录界面的设计

来源：互联网发布：origin8怎么数据拟合编辑：程序博客网时间：2024/05/17 21:28

编辑登录界面：

<?xml version="1.0"encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="@dimen/activity_horizontal_margin" android:background="@drawable/logintop_roundbg">

<requestFocus/>

</EditText>

<requestFocus/>

</EditText>

<LinearLayout android:layout_below="@id/etPassword" android:layout_width="match_parent" android:layout_height="wrap_content">

</LinearLayout>

</RelativeLayout>

将输入的账号密码保存：

<?xml version="1.0"encoding="utf-8"?><RelativeLayoutxmlns: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">

<includelayout="@layout/login_top"></include>

</RelativeLayout>

在JAVA 下Activity中编写：

packagecn.edu.bzu.a01;

importandroid.content.Context;importandroid.content.Intent;importandroid.content.SharedPreferences;importandroid.support.v7.app.AppCompatActivity;importandroid.os.Bundle;importandroid.view.View;importandroid.widget.CheckBox;importandroid.widget.EditText;importandroid.widget.Toast;

public classLoginActivity extendsAppCompatActivity {

privateEditText etName;

privateEditText etPassword;

privateCheckBox cbIsRememberPass;

privateSharedPreferences sharedPreferences;

@Override protected voidonCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_login);

initView();

sharedPreferences=getSharedPreferences("data", Context.MODE_PRIVATE);

booleanisRemember=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 voidinitView() {

etName= (EditText) findViewById(R.id.etName);

etPassword= (EditText) findViewById(R.id.etPassword);

cbIsRememberPass= (CheckBox) findViewById(R.id.cbIsRememberPass);

}

public voidlogin(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=newIntent(this,MainActivity.class);

startActivity(intent);

finish();

}else{

Toast.makeText(this,"账号或密码错误", Toast.LENGTH_SHORT).show();

}

在java下新建一个Activity-MainActivity文件，具体代码如下：

packagecn.edu.bzu.a01;

importandroid.support.v7.app.AppCompatActivity;importandroid.os.Bundle;

public classMainActivity extendsAppCompatActivity {

@Override protected voidonCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

成功登录界面：

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"?>

</RelativeLayout>

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"?><selectorxmlns:android="http://schemas.android.com/apk/res/android">

<itemandroid:drawable="@drawable/btn_shape"android:state_pressed="false"></item>

<itemandroid:drawable="@drawable/btn_shape_after"android:state_pressed="true"></item>

</selector>

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"?><shapexmlns:android="http://schemas.android.com/apk/res/android">

<solidandroid:color="#FF72CAE1"></solid>

<cornersandroid:radius="10dp"></corners>

</shape>

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"?><shapexmlns:android="http://schemas.android.com/apk/res/android">

<gradient android:startColor="#FFACDAE5" android:endColor="#FF72CAE1" android:angle="45" />

</shape>

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"?><shapexmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle">

<cornersandroid:radius="10dp"></corners>

<solidandroid:color="#55FFFFFF"></solid>

</shape>

在values下的strings.xml文件中，具体代码如下：

<stringname="app_name">01</string>

<stringname="etName">请输入账号</string>

<stringname="etPass">请输入密码</string>

<stringname="btnLogin">登录</string>

<stringname="btnRegister">注册</string>

</resources>

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