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/*** 保存到Sdcard public文件夹下* @param fileName* @param data*/public void saveToFileSdcardBySuff(String fileName,byte[] data){//保存文件的目录File file=null;FileOutputStream outputStream=null;if(Environment.getExternalStorageDirectory().equals(Environment.MEDIA_MOUNTED)){if(fileName.endsWith(".mp3")){file=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);}else if(fileName.endsWith(".jpg")||fileName.endsWith(".png")||fileName.endsWith(".gif")){file=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);}else if(fileName.endsWith(".mp4")||fileName.endsWith(".3gp")||fileName.endsWith(".txt")){file=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);}else{file=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);}}try {outputStream=new FileOutputStream(new File(file, fileName));outputStream.write(data, 0, data.length);} catch (Exception e) {// TODO: handle exceptione.printStackTrace();}finally{if(outputStream != null){try {outputStream.close();} catch (Exception e2) {// TODO: handle exceptione2.printStackTrace();}}}}
测试类代码：
public void save2() {FileService service = new FileService();service.saveToFileSdcardBySuff("abc.txt", "myTxt".getBytes());}
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