如何列出Android中的所有普通应用程序？

Question

我使用这个程序来获取所有应用程序在设备

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

    for(ApplicationInfo ai:packages) 
    { 
     Log.v("listpackage","name: "+ai.loadLabel(pm).toString()+", package:"+ai.packageName); 
    } 

然后我使用该程序打开这些应用程序

startActivity(getPackageManager().getLaunchIntentForPackage("com.xxx.yyy")); 

但是，当我列出应用程序，我发现有很多特殊的应用程序。

例如

name: Tags, package:com.android.apps.tag 
name: com.android.backupconfirm, package:com.android.backupconfirm 
name: Bluetooth Share, package:com.android.bluetooth 

如果我打开这些应用程序，我的应用程序将被终止，我也不知道这些应用程序是什么。我无法在手机中找到这些应用程序

如何在没有这些应用程序的情况下获得所有应用程序？

或者如何检测一个正常的应用程序或特殊应用程序的包名？

Answer 1

试试这个：

final PackageManager pm = getPackageManager(); 
List<PackageInfo> packages = pm.getInstalledPackages(0); 
String app=""; 
for(PackageInfo pi : packages){ 
    if(!isSystemPackage(pi)){ 
app = pi.applicationInfo.loadLabel(getPackageManager()).toString(); 
Log.i("App name " , app);} 
}  

boolean isSystemPackage(PackageInfo pkgInfo) { 
    return ((pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) ? true 
       : false; 
    } 

尝试找出使用isSystemPackage()上述非系统的应用软件包。

Answer 2

AllAppsActivity.java

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://javatechig.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

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 data = appsList.get(position); 
    if (null != data) { 
     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(data.loadLabel(packageManager)); 
     packageName.setText(data.packageName); 
     iconview.setImageDrawable(data.loadIcon(packageManager)); 
    } 
    return view; 
} 

};

activity_main.xml中

<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

<?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>