你可以用这个:

PackageManager pm = getApplicationContext().getPackageManager();
                List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);
                for (final ResolveInfo app : activityList) 
                {
                   if ((app.activityInfo.name).contains("facebook")) 
                   {
                     // facebook  
                   }

                   if ((app.activityInfo.name).contains("android.gm")) 
                   {
                     // gmail  
                   }

                   if ((app.activityInfo.name).contains("mms")) 
                   {
                     // android messaging app
                   }

                   if ((app.activityInfo.name).contains("com.android.bluetooth")) 
                   {
                     // android bluetooth  
                   }
                }

获取所有应用程序:

    PackageManager pm = getContext().getPackageManager();
    List<ApplicationInfo> apps = pm.getInstalledApplications(0);

检查是否安装了应用程序，然后打开:

if((app.flags & (ApplicationInfo.FLAG_UPDATED_SYSTEM_APP | ApplicationInfo.FLAG_SYSTEM)) > 0) {
                String app_package = app.packageName;
Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(app_package);
context.startActivity(launchIntent);

过滤基于系统的应用程序:

private boolean isSystemPackage(ResolveInfo ri) {
    return (ri.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
}

这个答案是正确的一个列表安装的应用程序显示和搜索功能添加。

科特林

activity_all_installed_app.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".AllInstalledAppActivity">

    <TextView
        android:id="@+id/totalInstalledApp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/total_Installed_Apps"
        android:textStyle="bold"
        android:textAlignment="center"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/totalInstalledApp"
        tools:listitem="@layout/installed_app_layout" />
</androidx.constraintlayout.widget.ConstraintLayout>

installed_app_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_margin="4dp"
    android:elevation="6dp"
    android:background="?attr/selectableItemBackground">
    <androidx.cardview.widget.CardView
        android:id="@+id/cardview"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        app:cardCornerRadius="5dp"
        app:cardUseCompatPadding="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/app_icon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="8dp"
                android:contentDescription="@string/todo"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/list_app_name"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="8dp"
                android:text="@string/app_name"
                android:textSize="16sp"
                android:textStyle="bold"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toEndOf="@+id/app_icon"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/app_package"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="8dp"
                android:text="@string/app_package_name"
                android:textStyle="bold"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toEndOf="@+id/app_icon"
                app:layout_constraintTop_toBottomOf="@+id/list_app_name" />
        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>

AppModel.kt

import android.graphics.drawable.Drawable

class AppModel(private var name:String, private var icon: Drawable, private var packages:String) {
    fun getName(): String {
        return name
    }

    fun getIcon(): Drawable {
        return icon
    }

    fun getPackages(): String {
        return packages
    }
}

AppAdapter.kt

import android.app.AlertDialog
import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.materialsouk.allcodeapp.R
import com.materialsouk.allcodeapp.models.AppModel
import java.util.ArrayList

import android.content.Intent
import android.net.Uri
import android.provider.Settings
import android.widget.Toast


class AppAdapter(private val context: Context, private var appModelList: ArrayList<AppModel>) :
    RecyclerView.Adapter<AppAdapter.ViewHolder>() {


    class ViewHolder(ItemView: View) : RecyclerView.ViewHolder(ItemView) {
        val appNameTxt: TextView = itemView.findViewById(R.id.list_app_name)
        val appPackageNameTxt: TextView = itemView.findViewById(R.id.app_package)
        val appIcon: ImageView = itemView.findViewById(R.id.app_icon)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val view: View =
            LayoutInflater.from(parent.context)
                .inflate(R.layout.installed_app_layout, parent, false)
        return ViewHolder(view)
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.appNameTxt.text = appModelList[position].getName()
        holder.appIcon.setImageDrawable(appModelList[position].getIcon())
        holder.appPackageNameTxt.text = appModelList[position].getPackages()

        holder.itemView.setOnClickListener {
            val dialogListTitle = arrayOf("Open App", "App Info")
            val builder: AlertDialog.Builder = AlertDialog.Builder(context)
            builder.setTitle("Choose Action")
                .setItems(
                    dialogListTitle
                ) { _, which ->
                    when (which) {
                        0 -> {
                            val intent =
                                context.packageManager.getLaunchIntentForPackage(appModelList[position].getPackages())
                            if (intent != null) {
                                context.startActivity(intent)
                            }else{
                                Toast.makeText(context,"System app is not open for any reason.",Toast.LENGTH_LONG).show()
                            }
                        }
                        1 -> {
                            val intent = Intent()
                            intent.action = Settings.ACTION_APPLICATION_DETAILS_SETTINGS
                            intent.data =
                                Uri.parse("package:${appModelList[position].getPackages()}")
                            context.startActivity(intent)
                        }
                    }
                }
            builder.show()
        }

    }

    override fun getItemCount(): Int {
        return appModelList.size
    }
}

这是菜单 search_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/app_bar_search"
        android:icon="@drawable/ic_search_black_24dp"
        android:title="@string/search"
        app:showAsAction="ifRoom|withText"
        app:actionViewClass="androidx.appcompat.widget.SearchView"/>
</menu>

AllInstalledAppActivity.kt

import android.annotation.SuppressLint
import android.app.Dialog
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.recyclerview.widget.RecyclerView
import com.materialsouk.allcodeapp.models.AppModel

import android.content.pm.PackageInfo

import android.content.pm.ApplicationInfo
import android.os.Handler
import android.os.Looper
import android.view.Menu
import android.widget.LinearLayout
import android.widget.TextView
import androidx.appcompat.widget.SearchView
import com.materialsouk.allcodeapp.adapters.AppAdapter
import java.util.*
import kotlin.collections.ArrayList


class AllInstalledAppActivity : AppCompatActivity() {
    private lateinit var recyclerView: RecyclerView
    private lateinit var installedAppsList: ArrayList<AppModel>
    private lateinit var installedAppAdapter: AppAdapter

    @SuppressLint("SetTextI18n")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_all_installed_app)
        recyclerView = findViewById(R.id.recycler_view)
        val loadingDialog = Dialog(this)
        loadingDialog.setContentView(R.layout.loading)
        loadingDialog.window!!.setLayout(
            LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT
        )
        loadingDialog.setCancelable(false)
        installedAppsList = ArrayList()
        loadingDialog.show()
        Handler(Looper.getMainLooper()).postDelayed({
            getInstalledApps()
            loadingDialog.dismiss()
            findViewById<TextView>(R.id.totalInstalledApp).text =
                "${getString(R.string.total_Installed_Apps)} ${installedAppsList.size}"
            installedAppAdapter = AppAdapter(this, installedAppsList)
            recyclerView.adapter = installedAppAdapter
        }, 500)

    }

    @SuppressLint("QueryPermissionsNeeded")
    private fun getInstalledApps(): ArrayList<AppModel> {
        installedAppsList.clear()
        val packs = packageManager.getInstalledPackages(0)
        for (i in packs.indices) {
            val p = packs[i]
            if (!isSystemPackage(p)) {
                val appName = p.applicationInfo.loadLabel(packageManager).toString()
                val icon = p.applicationInfo.loadIcon(packageManager)
                val packages = p.applicationInfo.packageName
                installedAppsList.add(AppModel(appName, icon, packages))
            }
        }
        installedAppsList.sortBy { it.getName().capitalized() }
        return installedAppsList
    }
    private fun String.capitalized(): String {
        return this.replaceFirstChar {
            if (it.isLowerCase())
                it.titlecase(Locale.getDefault())
            else it.toString()
        }
    }
    private fun isSystemPackage(pkgInfo: PackageInfo): Boolean {
        return pkgInfo.applicationInfo.flags and ApplicationInfo.FLAG_SYSTEM != 0
    }

    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.search_menu, menu)
        val search = menu.findItem(R.id.app_bar_search)

        val searchView = search.actionView as SearchView
        searchView.maxWidth = android.R.attr.width
        searchView.queryHint = "Search app name or package"
        searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
            override fun onQueryTextSubmit(query: String?): Boolean {
                return false
            }

            @SuppressLint("NotifyDataSetChanged")
            override fun onQueryTextChange(newText: String?): Boolean {
                val appModelArrayList: ArrayList<AppModel> = ArrayList()

                for (i in installedAppsList) {
                    if (i.getName().lowercase(Locale.getDefault()).contains(
                            newText!!.lowercase(
                                Locale.getDefault()
                            )
                        )
                        ||
                        i.getPackages().lowercase(Locale.getDefault()).contains(
                            newText.lowercase(
                                Locale.getDefault()
                            )
                        )
                    ) {
                        appModelArrayList.add(i)
                    }
                }
                installedAppAdapter =
                    AppAdapter(this@AllInstalledAppActivity, appModelArrayList)

                recyclerView.adapter = installedAppAdapter
                installedAppAdapter.notifyDataSetChanged()
                return true
            }
        })

        return super.onCreateOptionsMenu(menu)
    }
}

private static boolean isThisASystemPackage(Context context, PackageInfo  packageInfo ) {
        try {
            PackageInfo sys = context.getPackageManager().getPackageInfo("android", PackageManager.GET_SIGNATURES);
            return (packageInfo != null && packageInfo.signatures != null &&
                    sys.signatures[0].equals(packageInfo.signatures[0]));
        } catch (NameNotFoundException e) {
            return false;
        }
    }

要获得所有已安装的应用程序，您可以使用包管理器

List<PackageInfo> apps = getPackageManager().getInstalledPackages(0);

要运行一个应用程序，你可以使用它的包名

Intent launchApp = getPackageManager().getLaunchIntentForPackage(“package name”)
startActivity(launchApp);

欲了解更多细节，请阅读这个博客http://codebucket.co.in/android-get-list-of-all-installed-apps/