授予许可后立即加载WebView

Question

在我们的Android WebView应用程序中，我们要求读取_contacts，位置，相机，音频权限，一次初始化应用程序。发生的事情是同时加载了WebView URL。这会导致一些关键数据，例如位置，不得在第一个加载中传递给WebView。

我们从应用程序中获得的期望是在用户允许之后立即加载WebView URL，仅在此之前授予上述权限。我们尝试使用Requestpermissionsresult来实现这一目标，但无法做到这一点。我们尝试过的代码是在此处给出的

if (!check_permission(4) || !check_permission(3)) {
            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.READ_CONTACTS, Manifest.permission.POST_NOTIFICATIONS, Manifest.permission.WRITE_CONTACTS, Manifest.permission.READ_PHONE_NUMBERS,Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.RECORD_AUDIO,Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE},
                    contact_perm);

        }

@Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults){
        if (requestCode == 1) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                get_location();
asw_view.loadUrl(url);
            }

        }
    }

任何帮助，将不胜感激。

Answer 1

您只检查0th元素，即，grantresults [0] == packagemanager.permission_granted in requestpermissionsresult（...）。

您需要这样检查：

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == 1) {
            // Use this method to check if all the permissions are GRANTED.
            if (areAllPermissionsGranted(grantResults)) {
                get_location();
                asw_view.loadUrl(url);
            } else {
                /*
                * NOTE:
                * -----
                * Add a Log here to check if all the permissions are granted. 
                * If this block doesn't executes, it means all the permissions are granted,
                * something else is wrong inside your 'if' block and you need to debug that block.
                * */
            }
        }
    }
    
    // Method to check if all the results are GRANTED.
    private Boolean areAllPermissionsGranted(int[] grantResults) {
        boolean isGranted = false;
        if (grantResults.length > 0) {
            for (int grantResult : grantResults) {
                if (grantResult == PackageManager.PERMISSION_GRANTED) {
                    isGranted = true;
                } else {
                    // if a single permission is NOT_GRANTED, return from the method.
                    return false;
                }
            }
        }
        return isGranted;
    }

Answer 2

使用此库

gradle gradle：

implementation 'com.nabinbhandari.android:permissions:3.8'

然后：然后：

String[] permissions = {Manifest.permission.ACCESS_FINE_LOCATION}; //add your requested permissions to this array
String rationale = "Please provide location permission so that you can ...";
Permissions.Options options = new Permissions.Options()
    .setRationaleDialogTitle("Info")
    .setSettingsDialogTitle("Warning");

Permissions.check(this/*context*/, permissions, rationale, options, new         
PermissionHandler() {
@Override
public void onGranted() {
    // do your task here
}

@Override
public void onDenied(Context context, ArrayList<String> deniedPermissions) {
    // permission denied, block the feature.
}
});