如何获得Android手机的软件安装列表

我不是女神ヾ 2022-07-14 15:14 201阅读 0赞

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][SouthEast]

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。

## 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;
    	}
    };

[SouthEast]: /images/20220714/ff6eb00e3eea44db9095d927c1a75ac7.png