Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.content.Context;
import android.content.pm.ApplicationInfo;

import android.content.pm.PackageManager;

public class Main {
    /**
     * whether context is system application
     *
     * @param context
     * @return
     */
    public static boolean isSystemApplication(Context context) {
        if (context == null) {
            return false;
        }

        return isSystemApplication(context, context.getPackageName());
    }

    /**
     * whether packageName is system application
     *
     * @param context
     * @param packageName
     * @return
     */
    public static boolean isSystemApplication(Context context, String packageName) {
        if (context == null) {
            return false;
        }

        return isSystemApplication(context.getPackageManager(), packageName);
    }

    /**
     * whether packageName is system application
     *
     * @param packageManager
     * @param packageName
     * @return <ul>
     * <li>if packageManager is null, return false</li>
     * <li>if package name is null or is empty, return false</li>
     * <li>if package name not exit, return false</li>
     * <li>if package name exit, but not system app, return false</li>
     * <li>else return true</li>
     * </ul>
     */
    public static boolean isSystemApplication(PackageManager packageManager, String packageName) {
        if (packageManager == null || packageName == null || packageName.length() == 0) {
            return false;
        }

        try {
            ApplicationInfo app = packageManager.getApplicationInfo(packageName, 0);
            return (app != null && (app.flags & ApplicationInfo.FLAG_SYSTEM) > 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return false;
    }
}