How to allow users to rate and comment an app from within an Android application

You can allow your users to rate and comment on your app from within itself. The following implementation prompts a user to rate and comment on your android app after a specified number of days and specified number of launches. The user will see three options like "Rate and comment", "Remind later" or "No Thanks"

1. Create a new JAVA class called RatingHelper.java and paste the following code

package com.samples.myapp;

import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class RatingHelper {
    private final static String APP_TITLE = "MY APP TITLE";
    private final static String APP_PNAME = "com.samples.myapp";
   
    private final static int DAYS_UNTIL_PROMPT = 1;
    private final static int LAUNCHES_UNTIL_PROMPT = 5;
   
    public static void app_launched(Context mContext) {
        SharedPreferences prefs = mContext.getSharedPreferences("apprater", 0);
        if (prefs.getBoolean("dontshowagain", false)) { return ; }
       
        SharedPreferences.Editor editor = prefs.edit();
       
        // Increment launch counter
        long launch_count = prefs.getLong("launch_count", 0) + 1;
        editor.putLong("launch_count", launch_count);
        // Get date of first launch
        Long date_firstLaunch = prefs.getLong("date_firstlaunch", 0);
        if (date_firstLaunch == 0) {
            date_firstLaunch = System.currentTimeMillis();
            editor.putLong("date_firstlaunch", date_firstLaunch);
        }
       
        // Wait at least n days before opening
        if (launch_count >= LAUNCHES_UNTIL_PROMPT) {
            if (System.currentTimeMillis() >= date_firstLaunch +
                    (DAYS_UNTIL_PROMPT * 24 * 60 * 60 * 1000)) {
                showRateDialog(mContext, editor);
            }
        }
       
        editor.commit();
    }  
   
    public static void showRateDialog(final Context mContext, final SharedPreferences.Editor editor) {
        final Dialog dialog = new Dialog(mContext);
        dialog.setTitle("Rate " + APP_TITLE);
        LinearLayout ll = new LinearLayout(mContext);
        ll.setOrientation(LinearLayout.VERTICAL);
       
        TextView tv = new TextView(mContext);
        tv.setText("If you enjoy using " + APP_TITLE + ", please take a moment to rate it. Thanks for your support!");
        tv.setWidth(240);
        tv.setPadding(4, 0, 4, 10);
        ll.addView(tv);
       
        Button b1 = new Button(mContext);
        b1.setText("Rate " + APP_TITLE);
        b1.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                mContext.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + APP_PNAME)));
                dialog.dismiss();
            }
        });       
        ll.addView(b1);
        Button b2 = new Button(mContext);
        b2.setText("Remind me later");
        b2.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        ll.addView(b2);
        Button b3 = new Button(mContext);
        b3.setText("No, thanks");
        b3.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                if (editor != null) {
                    editor.putBoolean("dontshowagain", true);
                    editor.commit();
                }
                dialog.dismiss();
            }
        });
        ll.addView(b3);
        dialog.setContentView(ll);       
        dialog.show();       
    }
}

2. Change the values of DAYS_UNTIL_PROMPT and LAUNCHES_UNTIL_PROMPT based on your app

3. Add the following line to invoke RatingHelper class from your other android activity class
RatingHelper.app_launched(this);

4. Add the following line in Android manifest file

      <activity android:name=".WebViewer">
      </activity>