queryFiles.java

private void queryFiles() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    if (mAccessToken == null) {
                        Log.d(TAG, "need to sign in first");
                        return;
                    }

                    String containers = "";
                    String queryFile = "fileName = '" + et_searchFileName.getText()
                            + "' and mimeType != 'application/vnd.huawei-apps.folder'";

                    if (cb_isApplicationData.isChecked()) {
                        containers = "applicationData";
                        queryFile = "'applicationData' in parentFolder and ".concat(queryFile);
                    }

                    Drive drive = buildDrive();
                    Drive.Files.List request = drive.files().list();
                    FileList files;

                    while (true) {
                        files = request
                                .setQueryParam(queryFile)
                                .setPageSize(10)
                                .setOrderBy("fileName")
                                .setFields("category,nextCursor,files(id,fileName,size)")
                                .setContainers(containers)
                                .execute();

                        if (files == null || files.getFiles().size() > 0) {
                            break;
                        }

                        if (!StringUtils.isNullOrEmpty(files.getNextCursor())) {
                            request.setCursor(files.getNextCursor());
                        } else {
                            break;
                        }
                    }

                    String text = "";
                    if (files != null && files.getFiles().size() > 0) {
                        fileSearched = files.getFiles().get(0);
                        text = fileSearched.toString();
                    } else {
                        text = "empty";
                    }

                    final String finalText = text;
                    MainActivity.this.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            tv_queryResult.setText(finalText);
                        }
                    });

                    Log.d(TAG, "query success");
                } catch (Exception e) {
                    Log.d(TAG, "query error " + e.toString());
                }
            }
        }).start();
    }