wKioL1hJCTrQbAorAAHeWdhDusU595.png-wh_50

要实现这种效果，

  1. LinearLayout的嵌套实现    2.使用RelativeLayout


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    <?xml version= "1.0"  encoding= "utf-8" ?>
    <LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android"
         android:layout_width= "match_parent"
         android:layout_height= "match_parent"
         android:orientation= "vertical"
         android:paddingLeft= "10dp" 
          android:paddingRight= "10dp" 
          >
         
     
         
          <EditText 
             android:id= "@+id/EditText1"
             android:layout_width= "match_parent"
             android:layout_height= "wrap_content"
             android:hint= "@string/reminder"
             />
          
          
          <LinearLayout 
              android:layout_width= "match_parent"
              android:layout_height= "wrap_content"
              android:orientation= "horizontal"
              >
               <EditText 
             android:id= "@+id/dates"
             android:layout_width= "0dp"
             android:layout_height= "wrap_content"
             android:layout_weight= "1"
             
             />
         
          <EditText 
             android:id= "@+id/times"
             android:layout_width= "100dp"
             android:layout_height= "wrap_content"
               
             
             />
          
          </LinearLayout>
          
        
          <Button 
              android:id= "@+id/button1"
              android:layout_width= "96dp"
              android:layout_height= "wrap_content"
              android:layout_gravity= "right"
              android:text= "提交"
              />
     
    </LinearLayout>


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    <?xml version= "1.0"  encoding= "utf-8" ?>
    <RelativeLayout xmlns:android= "http://schemas.android.com/apk/res/android"
         android:layout_width= "match_parent"
         android:layout_height= "match_parent" 
         android:paddingLeft= "10dp"
         android:paddingRight= "10dp"
         >
         <EditText 
             android:id= "@+id/EditText1"
             android:layout_width= "fill_parent"
             android:layout_height= "wrap_content"
             android:hint= "@string/reminder"
             />
         <EditText 
             android:id= "@+id/dates"
             android:layout_width= "wrap_content"
             android:layout_height= "wrap_content"
             android:layout_below= "@id/EditText1"
             android:layout_alignParentLeft= "true"    
             android:layout_toLeftOf= "@+id/times" 
             
             />
         
          <EditText 
             android:id= "@+id/times"
             android:layout_width= "100dp"
             android:layout_height= "wrap_content"
             android:layout_below= "@+id/EditText1"
             android:layout_alignParentRight= "true"     
             
             />
          
          <Button 
              android:id= "@+id/button1"
              android:layout_width= "96dp"
              android:layout_height= "wrap_content"
              android:layout_below= "@id/times"
              android:layout_alignParentRight= "true"
              android:text= "提交"
              />
         
     
    </RelativeLayout>
    <!--   android:layout_alignParentLeft= "true"     和父控件左对齐
    android:layout_toLeftOf= "@+id/times"  在指定组件左边
    android:layout_below= "@id/EditText1"    在指定组件下边
      -->