如何创建Android上的.csv [英] How to create a .csv on android

问题描述

我的目标是从表中创建一个.csv文件，打印报告。然后，我可以在此.csv文件保存到我的SD卡。我曾提到类似这样的一些问题，但他们会问一个jar文件是present。是否有任何其他方式没有一个jar文件进行整合？

My aim is to create a .csv file from a table, to print a report. I can then store this .csv file into my sdCard. I have referred to some questions similar to this but they ask a jar file to be present. Is there any other way without a jar file to be integrated?

有集成在组件au.com.byte code.opencsv.CSVWriter一个jar文件...我不觉得有什么在这里是写入到一个新的生产线的逻辑...帮助？

Have integrate a jar file in the component au.com.bytecode.opencsv.CSVWriter...What I dont find here is the logic to write into a new line...Help?

推荐答案

检查以下code，生成CSV文件。没有必要使用jar文件

check below code to generate CSV file. no need to use jar file.

你要救一个csv文件中SD卡。

you have to save one csv file in to SD-CARD.

示例CSV文件

public void exportEmailInCSV() throws IOException {
        {

            File folder = new File(Environment.getExternalStorageDirectory()
                    + "/Folder");

            boolean var = false;
            if (!folder.exists())
                var = folder.mkdir();

            System.out.println("" + var);


            final String filename = folder.toString() + "/" + "Test.csv";

            // show waiting screen
            CharSequence contentTitle = getString(R.string.app_name);
            final ProgressDialog progDailog = ProgressDialog.show(
                    MailConfiguration.this, contentTitle, "even geduld aub...",
                    true);//please wait
            final Handler handler = new Handler() {
                @Override
                public void handleMessage(Message msg) {




                }
            };

            new Thread() {
                public void run() {
                    try {

                        FileWriter fw = new FileWriter(filename);

                        Cursor cursor = db.selectAll();

                        fw.append("No");
                        fw.append(',');

                        fw.append("code");
                        fw.append(',');

                        fw.append("nr");
                        fw.append(',');

                        fw.append("Orde");
                        fw.append(',');

                        fw.append("Da");
                        fw.append(',');

                        fw.append("Date");
                        fw.append(',');

                        fw.append("Leverancier");
                        fw.append(',');

                        fw.append("Baaln");
                        fw.append(',');

                        fw.append("asd");
                        fw.append(',');

                        fw.append("Kwaliteit");
                        fw.append(',');

                        fw.append("asd");
                        fw.append(',');

                        fw.append('\n');

                        if (cursor.moveToFirst()) {
                            do {
                                fw.append(cursor.getString(0));
                                fw.append(',');

                                fw.append(cursor.getString(1));
                                fw.append(',');

                                fw.append(cursor.getString(2));
                                fw.append(',');

                                fw.append(cursor.getString(3));
                                fw.append(',');

                                fw.append(cursor.getString(4));
                                fw.append(',');

                                fw.append(cursor.getString(5));
                                fw.append(',');

                                fw.append(cursor.getString(6));
                                fw.append(',');

                                fw.append(cursor.getString(7));
                                fw.append(',');

                                fw.append(cursor.getString(8));
                                fw.append(',');

                                fw.append(cursor.getString(9));
                                fw.append(',');

                                fw.append(cursor.getString(10));
                                fw.append(',');

                                fw.append('\n');

                            } while (cursor.moveToNext());
                        }
                        if (cursor != null && !cursor.isClosed()) {
                            cursor.close();
                        }

                        // fw.flush();
                        fw.close();

                    } catch (Exception e) {
                    }
                    handler.sendEmptyMessage(0);
                    progDailog.dismiss();
                }
            }.start();

        }

    }

在清单中添加此权限

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

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