作业七--1

<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.homework7.MainActivity" >
         <ImageView
             android:id="@+id/iv"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_alignParentTop="true"
             android:layout_centerHorizontal="true"
             android:layout_marginTop="20dp"
             android:src="@drawable/qq" />
    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="130dp"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/tv1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="账号:"
            android:textSize="25sp" />

        <EditText
            android:id="@+id/et1"
            android:layout_width="match_parent"
            android:layout_height="40dp"/>
    </LinearLayout>

    
    <LinearLayout
        android:id="@+id/linearLayout2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="190dp"
        android:orientation="horizontal" >
        <TextView
        android:id="@+id/tv2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="密码:"
        android:textSize="25sp" />
        <EditText
        android:id="@+id/et2"
        android:layout_width="match_parent"
        android:layout_height="40dp"/>
    </LinearLayout>

    
         <Button
             android:id="@+id/button"
             android:layout_width="200dp"
             android:layout_height="wrap_content"
             android:layout_alignParentBottom="true"
             android:layout_centerHorizontal="true"
             android:layout_marginBottom="56dp"
             android:onClick="onclick"
             android:text="登录" />

        

</RelativeLayout>



<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="105dp"
        android:orientation="horizontal" >
        <TextView
            android:id="@+id/tv1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="显示账号:"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/tv2"
            android:layout_width="match_parent"
            android:layout_height="40dp" />

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/linearLayout1"
        android:layout_marginTop="14dp"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/tv3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="显示密码:"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/tv4"
            android:layout_width="match_parent"
            android:layout_height="40dp" />

    </LinearLayout>

</RelativeLayout>




<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.homework7"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
         <activity android:name=".MainActivity2"></activity>
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

package com.example.zuoyeqi;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
private EditText et1;
private EditText et2;
private Button bt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
         bt=(Button)findViewById(R.id.button);
         et1=(EditText)findViewById(R.id.et1);
         et2=(EditText)findViewById(R.id.et2);    
    }
public void onclick(View v) {
    String ID="123456";
    String PassWord="abc123";
    String s1=et1.getText().toString();
    String s2=et2.getText().toString();
    if (ID.equals(s1)&&PassWord.equals(s2)) {
        Toast.makeText(MainActivity.this, "登录成功", 1).show(); 
        Intent intent=new Intent(MainActivity.this,MainActivity2.class);
            intent.putExtra("zh",s1);
            intent.putExtra("mm",s2);
            startActivity(intent);
    }
    else {
        Toast.makeText(MainActivity.this, "登录失败", 1).show();
    }
  
}
}




package com.example.zuoyeqi;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity2 extends ActionBarActivity {
    private TextView tv1;
    private TextView tv2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_main);
        tv1 = (TextView) findViewById(R.id.tv2);
        tv2=(TextView) findViewById(R.id.tv4);
        Intent intent=getIntent();
        String ID=intent.getStringExtra("zh");
        String PassWord=intent.getStringExtra("mm");
        tv1.setText(ID);
        tv2.setText(PassWord);
    }


}