package com.moral.yunfushao.utils;

import android.app.ActivityManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.util.Log;

import java.util.List;

/**
 * @author : chenqi.
 * @e_mail : 1650699704@163.com.
 * @create_time : 2018/12/29.
 * @Package_name: pregnancy_guard_android
 */
public class AppUtil {

    /**
     * 判断应用是否在后台
     *
     * @param context
     * @return
     */
    public static boolean isBackground(Context context) {
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
        for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) {
            if (appProcess.processName.equals(context.getPackageName())) {
                if (appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND) {
                    Log.i("后台", appProcess.processName);
                    return true;
                } else {
                    Log.i("前台", appProcess.processName);
                    return false;
                }
            }
        }
        return false;
    }

    /**
     * 判断应用是否在运行
     *
     * @param context
     * @return
     */
    public static boolean isApplicationRunning(Context context) {
        ActivityManager am = (ActivityManager) context
                .getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> appProcesses = am.getRunningAppProcesses();
        for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) {
            if (appProcess.processName.equals(context.getPackageName())) {
                return false;
            }
        }
        return true;
    }

    /**
     * 打开应用
     *
     * @param context
     * @param packageName
     */
    public static void openApp(Context context, String packageName) {
        try {
            PackageManager pm = context.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(packageName, 0);
            Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
            resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
            resolveIntent.setPackage(pi.packageName);
            List<ResolveInfo> apps = pm.queryIntentActivities(resolveIntent, 0);
            ResolveInfo ri = apps.iterator().next();
            if (ri != null) {
                String packagename = ri.activityInfo.packageName;
                String className = ri.activityInfo.name;
                Intent intent = new Intent(Intent.ACTION_MAIN);
                intent.addCategory(Intent.CATEGORY_LAUNCHER);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);//Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
                ComponentName cn = new ComponentName(packagename, className);
                intent.setComponent(cn);
                context.startActivity(intent);
            }
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
    }
}