Android Layout 01_activity_Login.xml

activity_login.xml

 <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=".MainActivity" >

     <TextView
         android:id="@+id/textView1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentLeft="true"
         android:text="账户：" />
     <EditText
         android:id="@+id/et_loginname"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginLeft="8dp"
         android:layout_toRightOf="@id/textView1"
         android:hint="登录名"
         android:ems="10" >
         <requestFocus />
     </EditText>
      <TextView
         android:id="@+id/textView2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@id/et_loginname"
         android:text="密码：" />
     <EditText
         android:id="@+id/et_loginpwd"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_below="@id/et_loginname"
         android:layout_toRightOf="@id/textView2"
         android:layout_marginLeft="8dp"
         android:hint="账户密码"
         android:ems="10"
         android:inputType="numberPassword" />
     <Button
         android:id="@+id/button2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginRight="8dp"
         android:layout_below="@id/et_loginpwd"
         android:layout_alignParentRight="true"
         android:text="重置" />
     <Button
         android:id="@+id/button1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@id/et_loginpwd"
         android:layout_toLeftOf="@id/button2"
         android:onClick="login"
         android:text="确定" />

 </RelativeLayout>