Android RatingBar




Android RatingBar




  • Static RatingBar Creation in Android.

  • Dynamic RatingBar Creation in Android.

  • Create your own RatingBar in Android.



Static RatingBar Creation in Android.


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

 <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" >

     <RatingBar
        android:id="@+id/ratingBar1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="86dp"
        android:numStars="5" />

     <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:textSize="20dp" />

 </RelativeLayout>

 Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

 import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.RatingBar.OnRatingBarChangeListener;

 public class MainActivity extends Activity {

     @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        RatingBar rr=(RatingBar) findViewById(R.id.ratingBar1);
        final TextView t1=(TextView) findViewById(R.id.textView1);
     
        rr.setRating((float) 2);
        rr.setStepSize((float) 0.3);
     
        rr.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {

@Override
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
// TODO Auto-generated method stub

t1.setText(String.valueOf(rating));
}
});
    }

     @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }  
}

 Step 4 : Open AndroidManifest.xml and add following code :

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

 </manifest>

Step 5 : Our output will be like this :

 




Dynamic RatingBar Creation in Android.


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

     <TextView
        android:id="@+id/textView1"
        android:textSize="20dp"
        android:textColor="#FF0000"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="40dp"
        android:text="Dynamic RatingBar" />

     <TextView
        android:id="@+id/textView2"
        android:textSize="20dp"
        android:textColor="#4169E1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="180dp"  />

 </RelativeLayout>

 Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

 import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.RatingBar;
import android.widget.RelativeLayout;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.TextView;

 public class MainActivity extends Activity {

 RelativeLayout rl;
RatingBar rating;
TextView t1;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        rl = (RelativeLayout) findViewById(R.id.rl);
        t1 = (TextView) findViewById(R.id.textView2);
     
        rating = new RatingBar (MainActivity.this);
     
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams
        ((int) LayoutParams.WRAP_CONTENT, (int) LayoutParams.WRAP_CONTENT);
        params.topMargin = 180;
        params.leftMargin = 20;
     
        rating.setLayoutParams(params);
     
        rl.addView(rating);
     
        rating.setNumStars(6);
        rating.setRating(3);
        rating.setStepSize((float) 0.5);
     
        rating.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {

@Override
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
// TODO Auto-generated method stub

t1.setText(String.valueOf(rating));
}
});
    }

     @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}

 Step 4 : Open AndroidManifest.xml and add following code :

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

 </manifest>

Step 5 : Our output will be like this :

 




Create your own RatingBar in Android.


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :
<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:id="@+id/rl"
    tools:context=".MainActivity" >

     <TextView
        android:id="@+id/textView1"
        android:textSize="20sp"
        android:textColor="#FF0000"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="40dp"
        android:text="Create your Own RaringBar" />

     <EditText
        android:id="@+id/editText1"
        android:hint="Number of Stars"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="30dp"
        android:layout_centerHorizontal="true"
        android:inputType="number" />
 
    <EditText
        android:id="@+id/editText2"
        android:hint="Step Size"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="30dp"
        android:layout_centerHorizontal="true"
        android:inputType="numberDecimal" />

     <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="30dp"
        android:text="Create" />

 </RelativeLayout>

 Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

 import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RatingBar;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;

 public class MainActivity extends Activity {

 RelativeLayout rl;
EditText star, step;
Button create;
RatingBar rating;

int numStar;
float stepSize;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

rl = (RelativeLayout) findViewById(R.id.rl);
star = (EditText) findViewById(R.id.editText1);
step = (EditText) findViewById(R.id.editText2);

create = (Button) findViewById(R.id.button1);

 create.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

numStar = Integer.parseInt(star.getText().toString());
stepSize = Float.parseFloat(step.getText().toString());

Create_RatingBar();
}
});
}

private void Create_RatingBar() {

 rl.removeView(rating);
rating = new RatingBar(MainActivity.this);

rating.setStepSize(stepSize);
rating.setNumStars(numStar);

RelativeLayout.LayoutParams param = new RelativeLayout.LayoutParams
(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

param.addRule(RelativeLayout.CENTER_HORIZONTAL);
param.topMargin = 500;

rating.setLayoutParams(param);
rl.addView(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;
}
}

 Step 4 : Open AndroidManifest.xml and add following code :

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

 </manifest>

Step 5 : Our output will be like this :