第三次作业

<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:background="#e7e7e7"
    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" >
    <LinearLayout 
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
            <LinearLayout 
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:orientation="vertical">
                <LinearLayout 
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
                 android:background="#e7e7e7">

                    <ImageView
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:src="@drawable/abcd" 
                        android:layout_marginBottom="50dp"/>
 
                 </LinearLayout>  
                      <LinearLayout 
                       android:layout_width="match_parent"
                       android:layout_height="match_parent"
                        android:layout_weight="1"
                        android:orientation="vertical">
                       <LinearLayout 
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_weight="1"
                        android:background="#ffffff"
                        android:orientation="horizontal">
                    <TextView 
                     
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:text="账号"
                        android:textColor="#000000"
                        android:gravity="center_vertical"
                        android:layout_marginLeft="8dp"
                        android:layout_weight="1"/>

                    <EditText
                         android:id="@+id/admin"
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:hint="QQ账号"
                        android:textColor="#000000"
                        android:layout_weight="7" />
                          <TextView 
                                        android:id="@+id/admin1" 
                                        android:layout_width="0dp"
                                        android:layout_height="0dp"
                                        android:text="123456"
                                                           />
                     </LinearLayout> 
                     <LinearLayout 
                       android:layout_width="match_parent"
                       android:layout_height="match_parent"
                       android:layout_weight="1"
                       android:background="#ffffff"
                       android:layout_marginTop="5dp"
                       android:orientation="horizontal">

                         <TextView
                             android:layout_width="0dp"
                             android:layout_height="match_parent"
                             android:layout_marginLeft="8dp"
                             android:layout_weight="1"
                             android:text="密码"
                             android:gravity="center_vertical"
                             android:textColor="#000000" />

                    <EditText
                        android:id="@+id/password"
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:gravity="center_vertical"
                        android:hint="QQ密码"
                        android:inputType="textPassword"
                        android:textColor="#000000"
                        android:layout_weight="7"  />
                    
                     </LinearLayout> 
                     </LinearLayout> 
                     </LinearLayout>
            <LinearLayout 
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:orientation="vertical">
                       <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:orientation="vertical" 
            android:layout_weight="1">

                           <Button
                               android:id="@+id/login"
                               android:layout_width="match_parent"
                               android:layout_height="wrap_content"
                               android:layout_marginTop="15dp"
                               android:background="#398ec6"
                               android:onClick="click"
                               android:text="登录" />
         <TextView 
        android:id="@+id/textview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="40dp"
        android:textSize="15dp" />                          
    </LinearLayout>
  </LinearLayout>
  </LinearLayout>
</RelativeLayout>

package com.example.qq;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
     private EditText madmin;
     private EditText mpassword;
     private Button mlogin;
     private TextView mtextview;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        madmin = (EditText) findViewById(R.id.admin);
        mpassword = (EditText) findViewById(R.id.password);
        mlogin = (Button) findViewById(R.id.login);
        mtextview = (TextView) findViewById(R.id.textview);
        mlogin.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                String admin = madmin.getText().toString();
                String password = mpassword.getText().toString();
                if("123456".equals(admin)&&"abc123".equals(password)){
                    Toast.makeText(MainActivity.this,"登录成功",0).show();
                }else{
                    mtextview.setText("登录失败");
                }
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}