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Objective-C Examples

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(Objective-C) Delete All Files

Permanently deletes all files owned by the user without moving it to the trash.

This example works by first getting a list of all fileIds, and then iterating over the list to delete each file.

See Google Drive Files delete for more information.

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

#import <CkoAuthGoogle.h>
#import <CkoRest.h>
#import <CkoJsonObject.h>
#import <NSString.h>
#import <CkoStringArray.h>
#import <CkoStringBuilder.h>

BOOL success = YES;

//  It requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  This example uses a previously obtained access token having permission for the
//  Google Drive scope.

CkoAuthGoogle *gAuth = [[CkoAuthGoogle alloc] init];
gAuth.AccessToken = @"GOOGLE-DRIVE-ACCESS-TOKEN";

CkoRest *rest = [[CkoRest alloc] init];

//  Connect using TLS.
BOOL bAutoReconnect = YES;
success = [rest Connect: @"www.googleapis.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: bAutoReconnect];

//  Provide the authentication credentials (i.e. the access token)
[rest SetAuthGoogle: gAuth];

//  Get 10 results per page for testing.  (The default page size is 100, with a max of 1000.
[rest AddQueryParam: @"pageSize" value: @"10"];

CkoJsonObject *json = [[CkoJsonObject alloc] init];
int i;
int numFiles;

//  Send the request for the 1st page.
NSString *jsonResponse = [rest FullRequestNoBody: @"GET" uriPath: @"/drive/v3/files"];

int pageNumber = 1;
NSString *pageToken = 0;
BOOL bContinueLoop = rest.LastMethodSuccess && ([rest.ResponseStatusCode intValue] == 200);

NSString *fileId = 0;
CkoStringArray *saFileIds = [[CkoStringArray alloc] init];

while (bContinueLoop == YES) {

    NSLog(@"%@%d%@",@"---- Page ",pageNumber,@" ----");
    [json Load: jsonResponse];

    numFiles = [[json SizeOfArray: @"files"] intValue];
    i = 0;
    while (i < numFiles) {
        json.I = [NSNumber numberWithInt: i];
        fileId = [json StringOf: @"files[i].id"];
        NSLog(@"%@%@",@"name: ",[json StringOf: @"files[i].name"]);
        NSLog(@"%@%@",@"id: ",fileId);
        [saFileIds Append: fileId];
        i = i + 1;
    }

    //  Get the next page of files.
    //  If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
    //  for the next request.   If no "nextPageToken" was present, then this was the last page of files.
    pageToken = [json StringOf: @"nextPageToken"];
    bContinueLoop = NO;
    BOOL bHasMorePages = json.LastMethodSuccess;
    if (bHasMorePages == YES) {
        [rest ClearAllQueryParams];
        [rest AddQueryParam: @"pageSize" value: @"10"];
        [rest AddQueryParam: @"pageToken" value: pageToken];
        jsonResponse = [rest FullRequestNoBody: @"GET" uriPath: @"/drive/v3/files"];
        bContinueLoop = rest.LastMethodSuccess && ([rest.ResponseStatusCode intValue] == 200);
        pageNumber = pageNumber + 1;
    }

}

//  Before actually deleting, check for errors...
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

//  A successful response will have a status code equal to 200.
if ([rest.ResponseStatusCode intValue] != 200) {
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response JSON: ",jsonResponse);
    return;
}

//  OK, we have the full list of files.  Delete each..
CkoStringBuilder *sbPath = [[CkoStringBuilder alloc] init];
numFiles = [saFileIds.Count intValue];
i = 0;
while (i < numFiles) {
    fileId = [saFileIds GetString: [NSNumber numberWithInt: i]];

    [rest ClearAllQueryParams];

    [sbPath Clear];
    [sbPath Append: @"/drive/v3/files/"];
    [sbPath Append: fileId];

    jsonResponse = [rest FullRequestNoBody: @"DELETE" uriPath: [sbPath GetAsString]];
    if (rest.LastMethodSuccess != YES) {
        NSLog(@"%@",rest.LastErrorText);
        return;
    }

    //  A successful response will have a status code equal to 204 and the response body is empty.
    //  (If not successful, then there should be a JSON response body with information..)
    if ([rest.ResponseStatusCode intValue] != 204) {
        NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
        NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
        NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
        NSLog(@"%@%@",@"response JSON: ",jsonResponse);
        return;
    }

    i = i + 1;
    NSLog(@"%d%@%@",i,@": Deleted ",fileId);
}

NSLog(@"%@",@"All Files Deleted.");
 

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