<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" > <requestFocus /> </EditText> </RelativeLayout>
package com.example.zuoye2; 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 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 txt1=et2.getText().toString(); String txt2=et3.getText().toString(); if(txt1.equals(1234567)&&txt2.equals(1234567)) { 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"); } } }