RatingBar for android control development

RatingBar for android control development
RatingBar for android control developmentThis blog post mainly describes the development of RatingBar. This control is mainly used for scoring and rating. Let's take a look at the instance code below:
MainActivity. java:Package com. example. ratingbar;


Import android. OS. Bundle;
Import android. app. Activity;
Import android. view. Menu;
Import android. widget. RatingBar;


Public class MainActivity extends Activity {


Private RatingBar ratingBar = null;
@ Override
Protected void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. main );

RatingBar = (RatingBar) findViewById (R. id. myRatingBar );
// Bind the listener of the RatingBar
RatingBar. setOnRatingBarChangeListener (new setRatingBarListener ());
}


// Create a listener for RatingBar
Class setRatingBarListener implements RatingBar. OnRatingBarChangeListener {



// Call this method when the RatingBar Level Changes
@ Override
Public void onRatingChanged (RatingBar ratingBar, float rating,
Boolean fromUser ){
// TODO Auto-generated method stub
System. out. println ("RatingBar --->" + rating );
}

}
@ Override
Public boolean onCreateOptionsMenu (Menu menu ){
// Inflate the menu; this adds items to the action bar if it is present.
GetMenuInflater (). inflate (R. menu. main, menu );
Return true;
}


}


Main. xml: 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">


Android: id = "@ + id/myText"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: text = "@ string/hello_world"/>


Android: id = "@ + id/myRatingBar"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: layout_below = "@ + id/myText"
Android: numStars = "4"
Android: stepSize = "0.5"/>




The display effect is as follows:

You can change the increment by setting stepSize.