Android gets the data from the assets folder and writes to the SD card example

The example in this paper mainly realizes that Android obtains the data in assets folder and writes it to SD card. The steps of this program are as follows: first read the database in assets folder and then write it to SD memory card.

The complete sample code is as follows:

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import android.content.Context;
/* will assets Database write under folder SD In the card 
 * @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;
 }
 }
}