Android 导出数据库到Excel表格功能

源码下载：

https://download.csdn.net/download/qq_31939617/10515652 下载

先上图：

MainActiviyt.class

package com.ldm.familybill;

import java.io.File;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ContentValues;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Environment;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.ldm.db.DBHelper;
import com.ldm.excel.ExcelUtils;

public class MainActivity extends Activity implements OnClickListener {
    private static final String TAG = "MainActivity";
    private EditText mFoodEdt;
    private EditText mArticlesEdt;
    private EditText mTrafficEdt;
    private EditText mTravelEdt;
    private EditText mClothesEdt;
    private EditText mDoctorEdt;
    private EditText mRenQingEdt;
    private EditText mBabyEdt;
    private EditText mLiveEdt;
    private EditText mOtherEdt;
    private EditText mRemarkEdt;
    private Button mSaveBtn;
    private File file;
    private String[] title = {"日期", "苹果", "桃子", "梨子", "桔子", "香蕉", "荔枝", "桂圆", "葡萄", "西瓜", "火龙果", "备注说明"};
    private String[] saveData;
    private DBHelper mDbHelper;
    private ArrayList> bill2List;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewsById();
        mDbHelper = new DBHelper(this);
        mDbHelper.open();
        bill2List = new ArrayList>();
    }

    private void findViewsById() {
        mFoodEdt = (EditText) findViewById(R.id.family_bill_food_edt);
        mArticlesEdt = (EditText) findViewById(R.id.family_bill_articles_edt);
        mTrafficEdt = (EditText) findViewById(R.id.family_bill_traffic_edt);
        mTravelEdt = (EditText) findViewById(R.id.family_bill_travel_edt);
        mClothesEdt = (EditText) findViewById(R.id.family_bill_clothes_edt);
        mDoctorEdt = (EditText) findViewById(R.id.family_bill_doctor_edt);
        mRenQingEdt = (EditText) findViewById(R.id.family_bill_laiwang_edt);
        mBabyEdt = (EditText) findViewById(R.id.family_bill_baby_edt);
        mLiveEdt = (EditText) findViewById(R.id.family_bill_live_edt);
        mOtherEdt = (EditText) findViewById(R.id.family_bill_other_edt);
        mRemarkEdt = (EditText) findViewById(R.id.family_bill_remark_edt);
        mSaveBtn = (Button) findViewById(R.id.family_bill_save);
        mSaveBtn.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.family_bill_save) {
            saveData = new String[]{new SimpleDateFormat("yyyy-MM-dd").format(new Date())
                    , mFoodEdt.getText().toString().trim()
                    , mArticlesEdt.getText().toString().trim()
                    , mTrafficEdt.getText().toString().trim()
                    , mTravelEdt.getText().toString().trim()
                    , mClothesEdt.getText().toString().trim()
                    , mDoctorEdt.getText().toString().trim()
                    , mRenQingEdt.getText().toString().trim()
                    , mBabyEdt.getText().toString().trim()
                    , mLiveEdt.getText().toString().trim()
                    , mOtherEdt.getText().toString().trim()
                    , mRemarkEdt.getText().toString().trim()};
            if (canSave(saveData)) {
                ContentValues values = new ContentValues();
                values.put("time", new SimpleDateFormat("yyyy-MM-dd").format(new Date()));
                values.put("food", mFoodEdt.getText().toString());
                values.put("use", mArticlesEdt.getText().toString());
                values.put("traffic", mTrafficEdt.getText().toString());
                values.put("travel", mTravelEdt.getText().toString());
                values.put("clothes", mClothesEdt.getText().toString());
                values.put("doctor", mDoctorEdt.getText().toString());
                values.put("laiwang", mRenQingEdt.getText().toString());
                values.put("baby", mBabyEdt.getText().toString());
                values.put("live", mLiveEdt.getText().toString());
                values.put("other", mOtherEdt.getText().toString());
                values.put("remark", mRemarkEdt.getText().toString());
                long insert = mDbHelper.insert("my_price", values);
                if (insert > 0) {
                    initData();


                }
            } else {
                Toast.makeText(this, "请填写任意一项内容", Toast.LENGTH_SHORT).show();
            }
        }
    }


    @SuppressLint("SimpleDateFormat")
    public void initData() {
        Log.e(TAG, "initData: --------------------------------");
        file = new File(getSDPath() + "/My");
        makeDir(file);
        ExcelUtils.initExcel(file.toString() + "/price.xls", title);
        ExcelUtils.writeObjListToExcel(getBillData(), getSDPath() + "/My/price.xls", this);
    }

    private ArrayList> getBillData() {
        Cursor mCrusor = mDbHelper.exeSql("select * from my_price");
        while (mCrusor.moveToNext()) {
            ArrayList beanList = new ArrayList();
            beanList.add(mCrusor.getString(1));
            beanList.add(mCrusor.getString(2));
            beanList.add(mCrusor.getString(3));
            beanList.add(mCrusor.getString(4));
            beanList.add(mCrusor.getString(5));
            beanList.add(mCrusor.getString(6));
            beanList.add(mCrusor.getString(7));
            beanList.add(mCrusor.getString(8));
            beanList.add(mCrusor.getString(9));
            beanList.add(mCrusor.getString(10));
            beanList.add(mCrusor.getString(11));
            beanList.add(mCrusor.getString(12));
            bill2List.add(beanList);
        }
        mCrusor.close();
        return bill2List;
    }

    public static void makeDir(File dir) {
        if (!dir.getParentFile().exists()) {
            makeDir(dir.getParentFile());
        }
        dir.mkdirs();
    }

    public String getSDPath() {
        File sdDir = null;
        boolean sdCardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);
        if (sdCardExist) {
            sdDir = Environment.getExternalStorageDirectory();
        }
        String dir = sdDir.toString();
        return dir;

    }

    private boolean canSave(String[] data) {
        boolean isOk = false;
        for (int i = 0; i < data.length; i++) {
            if (i > 0 && i < data.length) {
                if (!TextUtils.isEmpty(data[i])) {
                    isOk = true;
                }
            }
        }
        return isOk;
    }



}

源码下载：

https://download.csdn.net/download/qq_31939617/10515652 下载