作业7

package com.example.qqq;

import android.app.Activity;


import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.widget.TextView;
import android.text.Editable;
import android.view.View;
import android.view.View.OnClickListener;


public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button=(Button)findViewById(R.id.button1);
        button.setText("登录");
        button.setOnClickListener(new MyButtonListener());
        
    }
    public class MyButtonListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
    Intent intent=new Intent();
  intent.setClass(MainActivity.this,SecondActivity.class);
  MainActivity.this.startActivity(intent);
        }

    }
public void CCC(View view) {
    
    
    switch(view.getId()){
    case R.id.button1:
        EditText editText1=(EditText)findViewById(R.id.editText1);
        String editText11=editText1.getText().toString();
        EditText editText2=(EditText)findViewById(R.id.editText2);
        String editText22=editText2.getText().toString();
        String s1="123456";
        String s2="asd123";
        if(editText11.equals("123456")&&editText22.contentEquals("asd123")) {
            Toast.makeText(MainActivity.this, "登陆成功",0).show();
        }
            else {
                Toast.makeText(MainActivity.this, "登陆失败",0).show();
            }
        }
                
    }



    private Object getText(String string) {
        return null;
    }
    
    
    private static boolean editText1(String str1) {
        return false;
    }
    
    
    public boolean onCreateOptionnsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main,menu);
        return true;
    }
    
    
    
    
}
    
    
    
    
    



<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.qqq.MainActivity" >

   <ImageView 
        android:id="@+id/imageView1"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignParentLeft="true"
        android:layout_marginLeft="90dp"
        android:src="@drawable/asd" />
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="80dp"
        android:onClick="CCC"
        android:text="登陆" 
        />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="110dp"
        android:text="密码" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
           android:layout_alignParentTop="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="180dp"
        android:text="账号" />
   <EditText
       
         android:id="@+id/editText1"
        android:layout_width="140dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
         android:layout_alignParentTop="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="80dp"
        android:layout_marginTop="100dp"
        android:hint="" />
   <EditText
       
         android:id="@+id/editText2"
        android:layout_width="140dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="80dp"
        android:layout_marginTop="170dp"
        android:hint="" 
         android:inputType="textPassword"
         />
</RelativeLayout>



package com.example.qqq;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.Toast;
import android.widget.TextView;
import android.text.Editable;
import android.view.View;
import android.view.View.OnClickListener;


public class SecondActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        super.onCreate(savedInstanceState);
        setContentView(R.layout.secondlayout);
    }
public void CCC(View view) {
    
    
    switch(view.getId()){
    case R.id.button1:
        EditText editText1=(EditText)findViewById(R.id.editText1);
        String editText11=editText1.getText().toString();
        EditText editText2=(EditText)findViewById(R.id.editText2);
        String editText22=editText2.getText().toString();
        String s1="123456";
        String s2="asd123";
        if(editText11.equals("123456")&&editText22.contentEquals("asd123")) {
            Toast.makeText(SecondActivity.this, "登陆成功",0).show();
        }
            else {
                Toast.makeText(SecondActivity.this, "登陆失败",0).show();
            }
        }
                
    }



    private Object getText(String string) {
        return null;
    }
    
    
    private static boolean editText1(String str1) {
        return false;
    }
    
    
    public boolean onCreateOptionnsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main,menu);
        return true;
    }
    
    
    
    

    



}
    
    

<?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" >
    
<ImageView 
        android:id="@+id/imageView1"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignParentLeft="true"
        android:layout_marginLeft="90dp"
        android:src="@drawable/asd" />
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="80dp"
        android:onClick="CCC"
        android:text="登陆" 
        />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="110dp"
        android:text="密码" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
           android:layout_alignParentTop="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="180dp"
        android:text="账号" />
   <EditText
       
         android:id="@+id/editText1"
        android:layout_width="140dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
         android:layout_alignParentTop="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="80dp"
        android:layout_marginTop="100dp"
        android:hint="" />
   <EditText
       
         android:id="@+id/editText2"
        android:layout_width="140dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="80dp"
        android:layout_marginTop="170dp"
        android:hint="" 
       
         />
   
</RelativeLayout>


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

    <uses-sdk
        android:minSdkVersion="22"
        android:targetSdkVersion="22" />

    <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=".SecondActivity">
                
       </activity>
      
            
            
      
    </application>

</manifest>
原文地址:https://www.cnblogs.com/gsfwxj1820/p/11677056.html