android中把文件保存到sdcard代码实例_Android

android中把文件保存到sdcard代码实例

2021-03-22 16:02Android开发网 Android

这篇文章主要介绍了android中把文件保存到sdcard代码实例,本文直接给出实现代码,需要的朋友可以参考下

直接上代码：

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									package com.example.test;

									import java.io.File;

									import java.io.FileNotFoundException;

									import java.io.FileOutputStream;

									import java.io.IOException;

									import android.os.Bundle;

									import android.os.Environment;

									import android.app.Activity;

									import android.widget.Toast;

									public class MainActivity extends Activity {

									  @Override

									  protected void onCreate(Bundle savedInstanceState) {

									    super.onCreate(savedInstanceState);

									    setContentView(R.layout.activity_main);

									    //要保存的文件名和文件内容

									    String fileName = "test.txt";

									    String content = "This is a test.";

									    //判断sdcard是否存在

									    String state = Environment.getExternalStorageState();

									    if(state.equals(Environment.MEDIA_MOUNTED)) {

									     //获取SDCard目录

									     File sdcardPath = Environment.getExternalStorageDirectory();

									     File file = new File(sdcardPath, fileName);

									     FileOutputStream fos;

									  try {

									  fos = new FileOutputStream(file);

									  fos.write(content.getBytes());

									  fos.close();

									  } catch (FileNotFoundException e) {

									  e.printStackTrace();

									  } catch (IOException e) {

									  e.printStackTrace();

									  }

									  Toast.makeText(this, "保存成功", Toast.LENGTH_SHORT).show();

									    } else {

									     Toast.makeText(this, "sdcard不存在获取不可写入", Toast.LENGTH_SHORT).show();

									    }

									  }

									}