作业7

<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.qaq.MainActivity" >
         <requestFocus />
    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="43dp"
        android:src="@drawable/a" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="300dp"
        android:layout_height="50dp"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/imageView1"
        android:layout_marginLeft="37dp"
        android:layout_marginTop="97dp"
        android:background="#bbffff"
        android:textSize="27sp"
        android:text="账号:" />

     <EditText
         android:id="@+id/tv1"
         android:layout_width="200dp"
         android:layout_height="50dp"
         android:layout_alignBaseline="@+id/textView1"
         android:layout_alignBottom="@+id/textView1"
         android:layout_alignRight="@+id/textView1"
         android:ems="10"
         >



</EditText>

     <TextView
         android:id="@+id/textView2"
         android:layout_width="300dp"
         android:layout_height="50dp"
         android:layout_alignLeft="@+id/textView1"
         android:layout_below="@+id/textView1"
         android:layout_marginTop="27dp"
         android:background="#bbffff"
         android:textSize="27sp"
         android:text="密码:"  />

      <EditText
          android:id="@+id/tv2"
          android:layout_width="200dp"
          android:layout_height="50dp"
          android:layout_alignRight="@+id/textView2"
          android:layout_alignTop="@+id/textView2"
          android:ems="10"
          android:inputType="textPassword" />


      <Button
          android:id="@+id/button1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/imageView1"
          android:layout_alignParentBottom="true"
          android:layout_marginBottom="16dp"
          android:text="登录" 
          android:onClick="click"/>

</RelativeLayout>

<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.qaq.MainActivity2" >
    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="35dp"
        android:orientation="horizontal" >
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:orientation="horizontal" >
    </LinearLayout>
    <TextView
        android:id="@+id/tv1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/tv2"
        android:layout_alignParentLeft="true"
        android:layout_marginBottom="120dp"
        android:textSize="35dp" 
        />

    <TextView
        android:id="@+id/tv4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tv1"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="100dp"
        android:textSize="35dp" />

</RelativeLayout>

package com.example.qaq;

import android.app.Activity;
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 Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button1 = (Button) findViewById(R.id.button1);
    }
    private TextView textView;
    public void click(View view) {
        
        EditText tv1 = (EditText) findViewById(R.id.tv1);
        EditText tv2 = (EditText) findViewById(R.id.tv2);
      
        String s1 = tv1.getText().toString();
        String s2 = tv2.getText().toString();
        if (s1.equals("123456") && s2.equals("abc123")) {
            Toast.makeText(MainActivity.this, "登录成功", 0).show();
            Intent intent=new Intent();
            intent.setClass(this,MainActivity2.class);
            intent.putExtra("textView1",tv1.getText().toString());        
            intent.putExtra("textView2",tv2.getText().toString());
            startActivity(intent);
        } else {
            Toast.makeText(MainActivity.this, "登录失败", 0).show();
        }
    }

    @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;
    }

}

package com.example.qaq;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
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 Activity {    


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        TextView tv1 = (TextView) findViewById(R.id.tv1);
        TextView tv4 = (TextView) findViewById(R.id.tv4);        
        Intent intent =getIntent();
        String text =intent.getStringExtra("textView1");
        tv1.setText("QQ号为"+text+"");
        String text2 = intent.getStringExtra("textView2");
        tv4.setText("QQ密码为"+text2+"");
    }

}

 

 

 

来源：https://www.cnblogs.com/sxzsxz/p/11678388.html