在android应用程序中显示存储在Google驱动器中的文件夹和文件

implementation 'com.google.android.gms:play-services-drive:17.0.0'

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

private GoogleApiClient mGoogleApiClient;
private DriveFolder mDriveFolder;

...

mGoogleApiClient = new GoogleApiClient.Builder(this)
        .addApi(Drive.API)
        .addScope(Drive.SCOPE_FILE)
        .addConnectionCallbacks(this)
        .addOnConnectionFailedListener(this)
        .build();

...

@Override
public void onConnected(Bundle connectionHint) {
    Drive.DriveApi.getRootFolder(mGoogleApiClient)
            .setResultCallback(new ResultCallback<DriveFolder.DriveFolderResult>() {
                @Override
                public void onResult(@NonNull DriveFolder.DriveFolderResult result) {
                    if (result.getStatus().isSuccess()) {
                        mDriveFolder = result.getDriveFolder();
                        // 在这里可以获取到Google驱动器的根目录
                    } else {
                        // 处理获取根目录失败的情况
                    }
                }
            });
}

DriveFolder folder = ...; // 要显示的文件夹

folder.listChildren(mGoogleApiClient)
        .setResultCallback(new ResultCallback<DriveApi.MetadataBufferResult>() {
            @Override
            public void onResult(@NonNull DriveApi.MetadataBufferResult result) {
                if (result.getStatus().isSuccess()) {
                    MetadataBuffer metadataBuffer = result.getMetadataBuffer();
                    for (Metadata metadata : metadataBuffer) {
                        // 处理每个文件和文件夹的元数据
                        String title = metadata.getTitle();
                        String mimeType = metadata.getMimeType();
                        // ...
                    }
                    metadataBuffer.release();
                } else {
                    // 处理获取文件夹内容失败的情况
                }
            }
        });