如何获得Android手机的软件安装列表

来源：互联网发布：程序员接单平台编辑：程序博客网时间：2024/06/10 14:57

Android的PackageManager类用于检索目前安装在设备上的应用软件包的信息。你可以通过调用getpackagemanager()得到PackageManager类的一个实例。对查询和操作安装包和相关的权限提供了方法，在下面这个Android的例子中，我们得到了在Android安装的应用程序列表。
这里写图片描述

PackageManager packageManager = getPackageManager();List<ApplicationInfo> list = packageManager.getInstalledApplications(PackageManager.GET_META_DATA)

packageManager.getInstalledApplications()返回一个列表都是安装在设备上的应用程序包。如果我们把 flag GET_UNINSTALLED_PACKAGES设定，一个列表中的所有应用，包括那些设置为dont_delete_data（部分已安装的应用程序的数据目录）将返回。

1.创建布局文件

activity_main.xml

你可以看到附件中的截图，我们将创建一个列表显示所有已安装的应用程序。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <ListView        android:id="@android:id/list"        android:layout_width="fill_parent"        android:layout_height="wrap_content" /></LinearLayout>

snippet_list_row.xml

这个布局是由ListView适配器用于表示应用程序的细节。它显示应用程序图标、应用程序名称和应用程序包。

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <ImageView        android:id="@+id/app_icon"        android:layout_width="50dp"        android:layout_height="50dp"        android:padding="3dp"        android:scaleType="centerCrop" />    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:gravity="center_vertical"        android:orientation="vertical"        android:paddingLeft="5dp" >        <TextView            android:id="@+id/app_name"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:gravity="center_vertical"            android:textStyle="bold" />        <TextView            android:id="@+id/app_paackage"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:gravity="center_vertical" />    </LinearLayout></LinearLayout>

2.java 类

AllAppsActivity.java

这是用于初始化和列表已安装的应用程序的主要应用程序类。从packagemanage得到应用细节列表是一个耗时的任务，我们将在AsyncTask里面做。同时，类使用自定义适配器“自定义listview applicationadapter”。

package com.javatechig.listapps;import java.util.ArrayList;import java.util.List;import android.app.AlertDialog;import android.app.ListActivity;import android.app.ProgressDialog;import android.content.ActivityNotFoundException;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.ApplicationInfo;import android.content.pm.PackageManager;import android.net.Uri;import android.os.AsyncTask;import android.os.Bundle;import android.view.Menu;import android.view.MenuInflater;import android.view.MenuItem;import android.view.View;import android.widget.ListView;import android.widget.Toast;public class AllAppsActivity extends ListActivity {    private PackageManager packageManager = null;    private List<ApplicationInfo> applist = null;    private ApplicationAdapter listadaptor = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        packageManager = getPackageManager();        new LoadApplications().execute();    }    public boolean onCreateOptionsMenu(Menu menu) {        MenuInflater inflater = getMenuInflater();        inflater.inflate(R.menu.menu, menu);        return true;    }    public boolean onOptionsItemSelected(MenuItem item) {        boolean result = true;        switch (item.getItemId()) {        case R.id.menu_about: {            displayAboutDialog();            break;        }        default: {            result = super.onOptionsItemSelected(item);            break;        }        }        return result;    }    private void displayAboutDialog() {        final AlertDialog.Builder builder = new AlertDialog.Builder(this);        builder.setTitle(getString(R.string.about_title));        builder.setMessage(getString(R.string.about_desc));        builder.setPositiveButton("Know More", new DialogInterface.OnClickListener() {               public void onClick(DialogInterface dialog, int id) {                   Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://stacktips.com"));                   startActivity(browserIntent);                   dialog.cancel();               }           });        builder.setNegativeButton("No Thanks!", new DialogInterface.OnClickListener() {               public void onClick(DialogInterface dialog, int id) {                    dialog.cancel();               }        });        builder.show();    }    @Override    protected void onListItemClick(ListView l, View v, int position, long id) {        super.onListItemClick(l, v, position, id);        ApplicationInfo app = applist.get(position);        try {            Intent intent = packageManager                    .getLaunchIntentForPackage(app.packageName);            if (null != intent) {                startActivity(intent);            }        } catch (ActivityNotFoundException e) {            Toast.makeText(AllAppsActivity.this, e.getMessage(),                    Toast.LENGTH_LONG).show();        } catch (Exception e) {            Toast.makeText(AllAppsActivity.this, e.getMessage(),                    Toast.LENGTH_LONG).show();        }    }    private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {        ArrayList<ApplicationInfo> applist = new ArrayList<ApplicationInfo>();        for (ApplicationInfo info : list) {            try {                if (null != packageManager.getLaunchIntentForPackage(info.packageName)) {                    applist.add(info);                }            } catch (Exception e) {                e.printStackTrace();            }        }        return applist;    }    private class LoadApplications extends AsyncTask<Void, Void, Void> {        private ProgressDialog progress = null;        @Override        protected Void doInBackground(Void... params) {            applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));            listadaptor = new ApplicationAdapter(AllAppsActivity.this,                    R.layout.snippet_list_row, applist);            return null;        }        @Override        protected void onCancelled() {            super.onCancelled();        }        @Override        protected void onPostExecute(Void result) {            setListAdapter(listadaptor);            progress.dismiss();            super.onPostExecute(result);        }        @Override        protected void onPreExecute() {            progress = ProgressDialog.show(AllAppsActivity.this, null,                    "Loading application info...");            super.onPreExecute();        }        @Override        protected void onProgressUpdate(Void... values) {            super.onProgressUpdate(values);        }    }}

ApplicationAdapter.java

package com.javatechig.listapps;import java.util.List;import android.content.Context;import android.content.pm.ApplicationInfo;import android.content.pm.PackageManager;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ArrayAdapter;import android.widget.ImageView;import android.widget.TextView;public class ApplicationAdapter extends ArrayAdapter<ApplicationInfo> {    private List<ApplicationInfo> appsList = null;    private Context context;    private PackageManager packageManager;    public ApplicationAdapter(Context context, int textViewResourceId,            List<ApplicationInfo> appsList) {        super(context, textViewResourceId, appsList);        this.context = context;        this.appsList = appsList;        packageManager = context.getPackageManager();    }    @Override    public int getCount() {        return ((null != appsList) ? appsList.size() : 0);    }    @Override    public ApplicationInfo getItem(int position) {        return ((null != appsList) ? appsList.get(position) : null);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        View view = convertView;        if (null == view) {            LayoutInflater layoutInflater = (LayoutInflater) context                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);            view = layoutInflater.inflate(R.layout.snippet_list_row, null);        }        ApplicationInfo applicationInfo = appsList.get(position);        if (null != applicationInfo) {            TextView appName = (TextView) view.findViewById(R.id.app_name);            TextView packageName = (TextView) view.findViewById(R.id.app_paackage);            ImageView iconview = (ImageView) view.findViewById(R.id.app_icon);            appName.setText(applicationInfo.loadLabel(packageManager));            packageName.setText(applicationInfo.packageName);            iconview.setImageDrawable(applicationInfo.loadIcon(packageManager));        }        return view;    }};