AppInfoUtil.java

package com.xjf.repository.utils;


import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;


/**
 * -----------------------------------------------------------------
 * User:xijiufu
 * Email:xjfsml@163.com
 * Version:1.0
 * Time:2017/4/18--0:45
 * Function: 获取主页类
 * ModifyHistory:
 * -----------------------------------------------------------------
 */
public class AppInfoUtil {

    /**
     * Retrieve launcher activity name of the application from the context
     *
     * @param context The context of the application package.
     * @return launcher activity name of this application. From the
     * "android:name" attribute.
     */
    public static String getLauncherClassName(Context context) {
        PackageManager packageManager = context.getPackageManager();
        Intent intent = new Intent(Intent.ACTION_MAIN);
        // To limit the components this Intent will resolve to, by setting an
        // explicit package name.
        intent.setPackage(context.getPackageName());
        intent.addCategory(Intent.CATEGORY_LAUNCHER);
        // All Application must have 1 Activity at least.
        // Launcher activity must be found!
        ResolveInfo info = packageManager
                .resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
        // get a ResolveInfo containing ACTION_MAIN, CATEGORY_LAUNCHER
        // if there is no Activity which has filtered by CATEGORY_DEFAULT
        if (info == null) {
            info = packageManager.resolveActivity(intent, 0);
        }
        //////////////////////另一种实现方式//////////////////////
        // ComponentName componentName = context.getPackageManager().getLaunchIntentForPackage(mContext.getPackageName()).getComponent();
        // return componentName.getClassName();
        //////////////////////另一种实现方式//////////////////////
        return info.activityInfo.name;
    }
}