Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.lang.reflect.Field;
import java.util.Locale;

import android.content.Context;

import android.os.Build;
import android.text.TextUtils;

public class Main {
    /**
     * @param context
     *            if null, use the default format (Mozilla/5.0 (Linux; U;
     *            Android %s) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0
     *            %sSafari/534.30).
     * @return
     */

    public static String getUserAgent(Context context) {
        String webUserAgent = null;
        if (context != null) {
            try {
                Class<?> sysResCls = Class.forName("com.android.internal.R$string");
                Field webUserAgentField = sysResCls.getDeclaredField("web_user_agent");
                Integer resId = (Integer) webUserAgentField.get(null);
                webUserAgent = context.getString(resId);
            } catch (Throwable ignored) {
            }
        }
        if (TextUtils.isEmpty(webUserAgent)) {
            webUserAgent = "Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 %sSafari/533.1";
        }

        Locale locale = Locale.getDefault();
        StringBuffer buffer = new StringBuffer();
        // Add version
        final String version = Build.VERSION.RELEASE;
        if (version.length() > 0) {
            buffer.append(version);
        } else {
            // default to "1.0"
            buffer.append("1.0");
        }
        buffer.append("; ");
        final String language = locale.getLanguage();
        if (language != null) {
            buffer.append(language.toLowerCase());
            final String country = locale.getCountry();
            if (country != null) {
                buffer.append("-");
                buffer.append(country.toLowerCase());
            }
        } else {
            // default to "en"
            buffer.append("en");
        }
        // add the model for the release build
        if ("REL".equals(Build.VERSION.CODENAME)) {
            final String model = Build.MODEL;
            if (model.length() > 0) {
                buffer.append("; ");
                buffer.append(model);
            }
        }
        final String id = Build.ID;
        if (id.length() > 0) {
            buffer.append(" Build/");
            buffer.append(id);
        }
        return String.format(webUserAgent, buffer, "Mobile ");
    }
}