Android 11 获取app列表发现，只能获取系统安装的类别，其他新装的无法获取到，原因在于权限不够

代码如下

```

List<PackageInfo> packages = context.getPackageManager().getInstalledPackages(PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES);

for (int i = 0; i < packages.size(); i++) {

    PackageInfo packageInfo = packages.get(i);

    String appName = packageInfo.applicationInfo.loadLabel(context.getPackageManager()).toString();

    String packageName = packageInfo.packageName;

    String versionName = packageInfo.versionName;

    Log.d("anger",appName);

    Log.d("anger",packageName);

    Log.d("anger",versionName);

}

```

增加权限

```

<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>

```

参考地址https://stackoverflow.com/questions/67189934/how-to-get-a-list-of-installed-apps-in-android-11