Learning android from scratch (using nested layout to implement the calculator interface .. 17 .)

Learning android from scratch (using nested layout to implement the calculator interface .. 17 .)

The so-called nested layout is to nest multiple layout files in a file.

  
 
  <frameLayout android:layout_width="match_parent"        android:layout_height="fill_parent"        android:orientation="vertical" >………………</frameLayout >
 

Next we will use the nested layout to implement the UI effect of a simple calculator.

The following figure shows the basic concept.

Use the Xml layout file to set the calculator Effect <喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> VcD4KPHA + PC9wPgo8cHJlIGNsYXNzPQ = "brush: java;">

The following is a simulator.

The above code is used repeatedly

 android:layout_weight=""

To set a layout, you must understand the concept of weight. android: layout_weight

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