如何从微调器中显示的列表中获取Android应用程序的uid值？

Question

我正在开发一个小应用程序,它将已安装的应用程序显示为微调器中的列表.只有应用程序名称显示为微调器值.每当我从微调器中选择一个应用程序时,我需要检索所选应用程序的UID.我该如何实现这个功能？

以下是我从微调器获取应用程序名称的代码

appspinner.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent, View arg1,
                int app_pos, long app_id) {
            // TODO Auto-generated method stub
            String app_selected=parent.getItemAtPosition(app_pos).toString();

        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub
            return;
        }
    });

已安装的应用程序使用PackageManager类存储在列表中,并使用PackageInfo类获取应用程序的名称.

Answer 1

您需要使用PackageManager获取有关您在列表中选择的任何应用程序的包信息.我没有这样做,Spinner但我确信它应该像我的一样工作ListView.

appspinner.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent, View arg1,
                int app_pos, long app_id) {
        // TODO Auto-generated method stub
        String app_selected=parent.getItemAtPosition(app_pos).toString();

        final PackageManager pm = getPackageManager();
        //get a list of installed apps.
        List<ApplicationInfo> packages = pm.getInstalledApplications(
                PackageManager.GET_META_DATA);
        int UID;
        //loop through the list of installed packages and see if the selected
        //app is in the list
        for (ApplicationInfo packageInfo : packages) {
            if(packageInfo.packageName.equals(app_selected)){
                //get the UID for the selected app
                UID = packageInfo.uid;
                break; //found a match, don't need to search anymore
            }

        }

        //Do whatever with the UID
        Log.i("Check UID", "UID is: " + UID);               

    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub
        return;
    }
});

您可能想看看如何packageName返回,packageName以便您可以尝试将其与所选的任何内容相匹配.

希望这能指出你正确的方向并帮助你.祝好运.