Button in android

Button demo

• Button in android mostly used to get action from user.
• You can get action from button in onClick() event.
• In android button works same as it works in java.
• Two ways to create Button in android
• Using xml file in layout
  
           <Button
          android:id="@+id/button1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="My Button"/>
   
• Using java code in activity class
         
           Button btnDynamic = new Button(this);
          btnDynamic.setText("Dynamically created Button");

• Types of Button in android
• Button
   
• ToggleButton
• <ToggleButton
  android:id="@+id/toggleButton1"
  android:layout_width="77dp"
  android:layout_height="wrap_content"
  android:text="ToggleButton" />
   
• ImageButton
• <ImageButton
  android:id="@+id/imageButton1"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:src="@drawable/gtumcaicon" >
   
• CheckBox
• <CheckBox
  android:id="@+id/checkBox1"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Select" >
   
• RadioButton
• <RadioGroup
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="horizontal" >
        <RadioButton
     android:id="@+id/red"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="Red" />
  
     <RadioButton
     android:id="@+id/green"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="Green" />
  </RadioGroup>
  
  

GTU MCA Android Button Tutorial Download Source code here