第三个作业

 

package com.example.qq;

import android.support.v7.app.ActionBarActivity;
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 btn_one=(Button)findViewById(R.id.btn_one);
        EditText editText1=(EditText)findViewById(R.id.editText1);
        EditText editText2=(EditText)findViewById(R.id.editText2);
        TextView textView1=(TextView)findViewById(R.id.textView1);
        String text1=editText1.getText().toString();
        String text2=editText2.getText().toString();
        if(text1.equals("123456")&&text2.equals("123456")) {
                Toast.makeText(MainActivity.this,"登录成功",0).show();
            }else {
                Toast.makeText(MainActivity.this,"登录失败",0).show();
            
            }
                
    }
    
}




<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.qq.MainActivity" >

    
    <EditText
        android:id="@+id/editText2"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="5dp"
        android:background="#ffffff"
        android:ems="10"
        android:hint="密码："
        android:paddingLeft="20dp" />

    <Button
        android:id="@+id/btn_one"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignLeft="@+id/editText2"
        android:layout_below="@+id/editText2"
        android:layout_marginTop="20dp"
        android:background="#00bfff"
        android:text="登录"
        android:textColor="#ffffff" 
        android:textSize="20dp"
        android:onClick="CCC"

        />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="60dp"
        android:layout_height="40dp"
        android:layout_below="@+id/btn_one"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="17dp"
        android:text=""
       />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="50dp"
        android:layout_height="60dp"
        android:layout_alignLeft="@+id/textView1"
        android:layout_alignParentTop="true"
        android:layout_marginTop="28dp"
        android:src="@drawable/qqqq" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignLeft="@+id/editText2"
        android:layout_below="@+id/imageView1"
        android:background="#ffffff"
        android:ems="10"
        android:hint="账号:"
        android:paddingLeft="20dp" >

        <requestFocus />
    </EditText>

</RelativeLayout>