使用 PackageManager 获取包名称 [重复]

Question

我的列表视图显示已安装的具有互联网权限的应用程序，但它工作正常，我正在尝试启用单击列表项并将用户带到他们可以卸载应用程序的屏幕，我的代码可以在没有任何强制关闭但打开的情况下工作该卸载屏幕仅 0.25 秒并返回。这是因为它没有得到正确的包名。我该如何解决这个问题？

    public class MainActivity extends Activity {

        ArrayList<String> results = new ArrayList<String>();

         @Override
           protected void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_main);
              getInstalledApps(this);
              ArrayAdapter adapter = new ArrayAdapter<String>(this, R.layout.activity_listview, results);

              ListView listView = (ListView) findViewById(R.id.mobile_list);
              listView.setAdapter(adapter);

              listView.setOnItemClickListener(new OnItemClickListener() {
                  @Override
                  public void onItemClick(AdapterView<?> parent, View view, int position,
                          long id) {
                      String packageName = results.get(position);
                      Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                      intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                      intent.setData(Uri.parse("package:" + packageName));
                      startActivity(intent);
                  }
              });
         }

          private ArrayList<String> getInstalledApps(Context context) {
            PackageManager packageManager = context.getPackageManager();
            List<PackageInfo> applist = packageManager.getInstalledPackages(0);
            Iterator<PackageInfo> it = applist.iterator();
            while (it.hasNext()) {
                PackageInfo pk = (PackageInfo) it.next();
                if ((pk.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
                    Log.v("system app using internet = ", ""+pk.applicationInfo.loadLabel(packageManager));
                    continue;
                }

                if (PackageManager.PERMISSION_GRANTED == packageManager .checkPermission(Manifest.permission.INTERNET, pk.packageName) ||
                        PackageManager.PERMISSION_GRANTED == packageManager .checkPermission(Manifest.permission.READ_EXTERNAL_STORAGE, pk.packageName))
                    results.add("" + pk.applicationInfo.loadLabel(packageManager));
            }

            Log.v("app using internet = ", results.toString());

            return results;
        }
    }

我也想直接把它带到卸载屏幕，而不是把它带到应用信息屏幕。

Answer 1

您将 应用名称 存储在结果数组中，而不是 包名称，这是不同的。

这是一个示例：Facebook 应用程序的名称为 Facebook，但其包名称为 com.facebook.katana

查询 PackageManager 时，不仅要请求 pk.applicationInfo.loadLabel(packageManager)，还要请求 pk.packageName（例如在另一个数组中）。

所以你的代码应该按以下方式编辑：

1. 在ArrayList<String> results = new ArrayList<String>();下添加ArrayList<String> packageNames = new ArrayList<String>();

2. 在results.add("" + pk.applicationInfo.loadLabel(packageManager)); 下添加packageNames.add(pk.packageName); 在此处使用括号与您的if (...)！

3. 将String packageName = results.get(position); 替换为String packageName = packageNames.get(position);

Answer 2

    Try this
    ArrayList<AppInfodata> appsDataList = new ArrayList<>();
    public void getAllApps() {

            PackageManager packageManager = getPackageManager();
            List apps = packageManager
                    .getInstalledPackages(PackageManager.SIGNATURE_MATCH);
            if (apps != null && !apps.isEmpty()) {

                for (int i = 0; i < apps.size(); i++) {
                    PackageInfo p = (PackageInfo) apps.get(i);
                    ApplicationInfo appInfo = null;
                    try {
                        appInfo = packageManager.getApplicationInfo(p.packageName,
                                0);

                        AppInfodata app = new AppInfodata();
                        app.appname = p.applicationInfo.loadLabel(packageManager)
                                .toString();
                        app.packagename = p.packageName;

                      app.icon = p.applicationInfo.loadIcon(packageManager);


                            appsDataList.add(app);
                        }

                    } catch (NameNotFoundException e) {
                        e.printStackTrace();
                    }
                }

                // sort the list of applications alphabetically

            }
            public class AppInfodata {
        String appname;
        String packagename;

        Drawable icon;


    }

class AppListAdapter extends ArrayAdapter<AppInfoData>
{
AppListAdapter(Context context,int resource,ArrayList<AppInfoData> datalist)
{
super(context,resource,datalist);
}
getView(.....)
{
AppInfoData data =getItem(position);
}

}