第七次作业

package com.example.zuoye2;

import android.support.v7.app.ActionBarActivity;

import com.example.zuoye2.MainActivity;

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 MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void CCC(View view){
        
         Button button1=(Button)findViewById(R.id.button1);//在Java中根据ID获取控件对象
         TextView tv2=(TextView)findViewById(R.id.tv2);//在JAVA中获取TV1对象
          EditText et2=(EditText)findViewById(R.id.et2);
          EditText et3=(EditText)findViewById(R.id.et3);
          String z="1245800618";
          String m="abc123456";
          String txt1=et2.getText().toString();
          String txt2=et3.getText().toString();
         if(z.equals(txt1)&&m.equals(txt2)) {
              Toast.makeText(MainActivity.this, "登陆成功", 0).show();  //点击按钮时，在下面弹出消息框
            
          }else {
              Toast.makeText(MainActivity.this, "登录失败", 0).show(); 
                tv2.setText("登录失败");    
          }
            
           Intent intent=new Intent(this,second.class);
            //信使中存放数据
            intent.putExtra("zhanghao",txt1);
            intent.putExtra("mima",txt2);        
            startActivity(intent);   
    }

}

package com.example.zuoye2;

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 second extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dier);
        
         //把信使中的数据取出来
        Intent intent=getIntent();
        String zh=intent.getStringExtra("zhanghao");
        String mm=intent.getStringExtra("mima");        
        //取出来后显示在textview上
        ((TextView)(findViewById(R.id.tv1))).setText("账号是"+zh+"密码是"+mm);        
    }


}

<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.zuoye2.MainActivity" >   
<TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="QQ登录"
        android:textColor="#FFF79E38"
        android:textSize="25sp"
        android:gravity="center"
        android:textStyle="italic"/>

        <EditText
            android:id="@+id/et2"
            android:layout_width="match_parent"
            android:layout_height="40dp"
             android:background="#ffffff"
               android:paddingLeft="20dp"
            android:layout_alignLeft="@+id/tv1"
            android:layout_below="@+id/tv1"
            android:layout_marginTop="82dp"
            android:ems="10"
            android:hint="账号：" />

        

          <TextView
              android:id="@+id/tv2"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_below="@+id/button1"
              android:layout_centerHorizontal="true"
              android:layout_marginTop="37dp"
              android:gravity="center"
              android:textColor="#FFF79E38"
              android:textSize="25sp"
              android:textStyle="italic" />

          <ImageView
              android:id="@+id/imageView1"
              android:layout_width="50dp"
              android:layout_height="60dp"
              android:layout_below="@+id/tv1"
              android:layout_centerHorizontal="true"
              android:src="@drawable/xffff" />

          <Button
              android:id="@+id/button1"
              android:layout_width="match_parent"
              android:layout_height="40dp"
              android:layout_alignParentLeft="true"
              android:layout_below="@+id/et3"
              android:layout_marginTop="36dp"
              android:background="#4682B4"
              android:text="登录" 
              android:onClick="CCC"/>

          <EditText
              android:id="@+id/et3"
              android:layout_width="match_parent"
              android:layout_height="40dp"
              android:layout_alignParentRight="true"
              android:layout_below="@+id/et2"
              android:layout_marginTop="18dp"
              android:background="#ffffff"
              android:ems="10"
              android:hint="密码："
              android:paddingLeft="20dp" >

<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.zuoye2.second" >

    <TextView
        android:id="@+id/tv1"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="194dp"
        android:text="@string/hello_world" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.zuoye2"
    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=".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>
        <activity android:name=".second">            
          
        </activity>
        
        
    </application>

</manifest>