获取可以启动的已安装应用程序列表

Question

我有一个自定义listPreference我想显示可以启动的应用程序列表（包含CATEGORY_LAUNCHER的活动）。该选择将在稍后用于启动应用程序。当我搜索解决方案时，该列表还包含无法启动的应用程序。有什么办法可以缩小这个范围吗？

public class AppSelectorPreference extends ListPreference { 

@Override 
public int findIndexOfValue(String value) { 
    return 0; 
    //return super.findIndexOfValue(value); 
} 

public AppSelectorPreference(Context context, AttributeSet attrs) { 
    super(context,attrs); 

    PackageManager pm = context.getPackageManager(); 
    List<PackageInfo> appListInfo = pm.getInstalledPackages(0); 
    CharSequence[] entries = new CharSequence[appListInfo.size()]; 
    CharSequence[] entryValues = new CharSequence[appListInfo.size()]; 

    try { 
     int i = 0; 
     for (PackageInfo p : appListInfo) { 
      if (p.applicationInfo.uid > 10000) { 
       entries[i] = p.applicationInfo.loadLabel(pm).toString(); 
       entryValues[i] = p.applicationInfo.packageName.toString();    

       i++; 
      }   
     } 
    } catch (Exception e) { 

     e.printStackTrace(); 
    } 

    setEntries(entries); 
    setEntryValues(entryValues); 
} 

}

Answer 1

解决：

final Context context = getBaseContext(); 
    final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); 
    mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); 
    final List<ResolveInfo> pkgAppsList = context.getPackageManager().queryIntentActivities(mainIntent, 0); 
    CharSequence[] entries = new CharSequence[pkgAppsList.size()]; 
    CharSequence[] entryValues = new CharSequence[pkgAppsList.size()]; 

    int i = 0; 
    for (ResolveInfo P : pkgAppsList) { 
     entryValues[i] = (CharSequence) P.getClass().getName(); 
     entries[i] = P.loadLabel(context.getPackageManager()); 
     ++i; 
    }; 

Answer 2

@ Frazerm63我认为你缺少这个东西在你的代码

Intent localIntent = new Intent("android.intent.action.MAIN", null); 
    localIntent.addCategory("android.intent.category.LAUNCHER"); 
    List localList = localPackageManager.queryIntentActivities(localIntent, 0); 
    Collections.sort(localList, new ResolveInfo.DisplayNameComparator(localPackageManager)); 

你必须通过你的PackageManager对象在上面的代码中.means这localPackageManager

我不太了解如何在用户代码中使用它，但这将有助于让您想法仅过滤某些类别应用程序。