保存到SD卡作为文本文件 [英] Saving to SD card as text file

问题描述

   stopWriting = (Button) findViewById(R.id.save);
   stopWriting.setOnClickListener(new OnClickListener() {

       @SuppressLint("SdCardPath")
    public void onClick(View v) {
           // stop recording the sensor data
           try {

               myFile = new File("/sdcard/SensorData/" + txtData.getText() + ".txt");
               myFile.createNewFile();

               sData = new FileOutputStream(myFile);
               myOutWriter = new OutputStreamWriter(sData);
               myBufferedWriter = new BufferedWriter(myOutWriter);
               myPrintWriter = new PrintWriter(myBufferedWriter);

               //if(myFile != null )//stopFlag = mSensorManager.cancelTriggerSensor(null, null);
               Toast.makeText(getBaseContext(), "Done", Toast.LENGTH_SHORT).show();
           } catch (Exception e) {
               Toast.makeText(getBaseContext(), e.getMessage(), Toast.LENGTH_SHORT).show();
           }
       }
   });

我正在尝试将陀螺仪数据保存到txt文件，但它不能保存。如果有人发现问题，请帮我纠正。

I am trying to save gyroscope data to txt file but it does not save. If anybody finds the problem, please help to me correct it.

推荐答案

试试这段代码吧。

try {
            File myFile = new File("/sdcard/mysdfile.txt");
            myFile.createNewFile();
            FileOutputStream fOut = new FileOutputStream(myFile);
            OutputStreamWriter myOutWriter = 
                                    new OutputStreamWriter(fOut);
            myOutWriter.append(txtData.getText());
            myOutWriter.close();
            fOut.close();
            Toast.makeText(getBaseContext(),
                    "Done writing SD 'mysdfile.txt'",
                    Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            Toast.makeText(getBaseContext(), e.getMessage(),
                    Toast.LENGTH_SHORT).show();
        }

别忘了取得许可

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

这篇关于保存到SD卡作为文本文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！