注册登录界面 总结

1.Androidmanifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.administrator.myapplication">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".zhuceActivity">
        </activity>
    </application>

</manifest>

2.maniactivity.java

package com.example.administrator.myapplication;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    //view 代表事件发起
    public void bt1_onclick(View v)
    {
        //带返回的打开 注册Acivity

        //第一步:构造意图

        Intent intent = new Intent(this,zhuceActivity.class);

        startActivityForResult(intent,1);
    }
}

3.zhuceActivity.java

package com.example.administrator.myapplication;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class zhuceActivity extends AppCompatActivity {
    EditText et_usercode1;
    EditText et_password1;
    EditText et_username1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_zhuce);

        et_usercode1 = (EditText)findViewById(R.id.et_usercode_1);
        et_usercode1 = (EditText)findViewById(R.id.et_password_1);
        et_usercode1 = (EditText)findViewById(R.id.et_username_1);
    }
    //view 代表事件发起
    public void bt1_onclick(View v)
    {

        //返回注册信息
        //用户代码
        String usercode = et_usercode1.getText().toString();
        if(usercode==null||usercode.trim().length()==0)
        {
            Toast.makeText(zhuceActivity.this, "请正确填写用户代码", Toast.LENGTH_LONG).show();

            return;
        }
        String username = et_username1.getText().toString();
        if(username==null||username.trim().length()==0)
        {
            Toast.makeText(zhuceActivity.this, "请正确填写用户名称", Toast.LENGTH_LONG).show();

            return;
        }
        String userpassword =et_password1.getText().toString();
        if(userpassword==null||userpassword.trim().length()==0)
        {
            Toast.makeText(zhuceActivity.this, "请正确填写用户名称", Toast.LENGTH_LONG).show();

            return;
        }

        Intent intent = new Intent();

        intent.putExtra("usercode",usercode);
        intent.putExtra("username",username);
        intent.putExtra("userpassword",userpassword);

        setResult(RESULT_OK,intent);

        finish();
    }
}

4.Activity_mani.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    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="com.example.administrator.myapplication.MainActivity"
    android:orientation="vertical">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户代码"
        android:id="@+id/et_usercode"/> //获取密码
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="密码"
        android:id="@+id/et_password"
        android:inputType="textPassword"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="登录"/>
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="密码"
            android:onClick="bt1_onclick"/>
    </LinearLayout>
</LinearLayout>

4.Actvity_zhuce.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    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="com.example.administrator.myapplication.zhuceActivity">
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户代码"
        android:id="@+id/et_usercode_1"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户名称"
        android:id="@+id/et_username_1"
        android:layout_below="@+id/et_usercode_1"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="登录密码"
        android:id="@+id/et_password_1"
        android:layout_below="@+id/et_username_1"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true">
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="取消"
            android:onClick="bt2_onclick"/>
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="确定"
            android:onClick="bt1_onclick"/>
    </LinearLayout>
</RelativeLayout>