Question

我的问题：
我希望使用Intent Category Category.LAUNCHER获取所有已安装的应用程序。所以我想获得将在启动器中显示的所有应用程序然后解决包裹和名称例如package: "com.android.phone" -- name: "Phone"

我的代码基本上有效，但我想，不，我知道这可以变得更容易：

final PackageManager pm = getPackageManager();
Intent main = new Intent(Intent.ACTION_MAIN, null);
main.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> packages = pm.queryIntentActivities(main, 0);

for (ResolveInfo resolve_info : packages)
{
    try
    {
        //THIS TWO
        String package_name = resolve_info.activityInfo.packageName;
        String app_name = (String)pm.getApplicationLabel(pm.getApplicationInfo(package_name, PackageManager.GET_META_DATA));

        Log.i("TEST", "package = <" + package_name + "> name = <" + app_name + ">");
    }
    catch(Exception e)
    {
        //package not found -- should never happen
    }
}

那么更好/更快或更容易的方式呢？

Answer 1

final PackageManager pm = getActivity().getPackageManager();

final IntentFilter filter = new IntentFilter(Intent.ACTION_MAIN);
filter.addCategory(Intent.CATEGORY_LAUNCHER);

List<IntentFilter> outFilters = new ArrayList<IntentFilter>();
outFilters.add(filter);

List<ComponentName> outActivities = new ArrayList<ComponentName>();
pm.getPreferredActivities(outFilters, outActivities, null);

Answer 2

    Intent startupIntent = new Intent(Intent.ACTION_MAIN);
    startupIntent.addCategory(Intent.CATEGORY_LAUNCHER);
    PackageManager pm =  this.getPackageManager();
    List<ResolveInfo> activities = pm.queryIntentActivities(startupIntent, 0);
    Log.i(TAG, "Found " + activities.size() + " activities.");

MainActivity中的扩展AppCompatActivity或Activity的

使用Category.LAUNCHER获取所有已安装的应用程序

2 个答案: