本文示例主要实现了Android获取assets文件夹中的数据并将其写入到SD卡中,该程序实现的步骤主要为:首先读取assets文件夹中的数据库,再将其写入到SD存储卡中。
完整示例代码如下:
import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import android.content.Context;/*将assets文件夹下的数据库写入SD卡中 * @author Dave */public class WriteToSD { private Context context; String filePath = android.os.Environment.getExternalStorageDirectory()+"/weather"; public WriteToSD(Context context){ this.context = context; if(!isExist()){write(); } } private void write(){ InputStream inputStream; try {inputStream = context.getResources().getAssets().open("addressId.db");File file = new File(filePath);if(!file.exists()){file.mkdirs();}FileOutputStream fileOutputStream = new FileOutputStream(filePath + "/database.db");byte[] buffer = new byte[512];int count = 0;while((count = inputStream.read(buffer)) > 0){fileOutputStream.write(buffer, 0 ,count);}fileOutputStream.flush();fileOutputStream.close();inputStream.close();System.out.println("success"); } catch (IOException e) {e.printStackTrace(); } } private boolean isExist(){ File file = new File(filePath + "/database.db"); if(file.exists()){return true; }else{return false; } }}