1 /** 读写内部存储的文件数据 */ 2         findViewById(R.id.btnWrite).setOnClickListener( 3                 new View.OnClickListener() { 4                     @Override 5                     public void onClick(View v) { 6                         try { 7                             FileOutputStream fas = openFileOutput("text", 8                                     Context.MODE_PRIVATE); 9                             OutputStreamWriter asw = new OutputStreamWriter(10                                     fas, "UTF-8");11                             asw.write(et.getText().toString());12                             asw.flush();13                             fas.flush();14                             asw.close();15                             fas.close();16                             Toast.makeText(getApplicationContext(), "写入完成。",17                                     Toast.LENGTH_SHORT).show();18                         } catch (FileNotFoundException e) {19                             e.printStackTrace();20                         } catch (UnsupportedEncodingException e) {21                             e.printStackTrace();22                         }23                     }24                 });25         findViewById(R.id.btnRead).setOnClickListener(26                 new View.OnClickListener() {27                     @Override28                     public void onClick(View v) {29                         try {30                             FileInputStream fis = openFileInput("text");31                             InputStreamReader is = new InputStreamReader(fis,32                                     "UTF-8");33                             char input[] = new char[fis.available()];34                             is.read(input);35                             is.close();36                             fis.close();37                             String readed = new String(input);38                             show.setText(readed);39                         } catch (FileNotFoundException e) {40                             e.printStackTrace();41                         } catch (IOException e) {42                             e.printStackTrace();43                         }44                     }45                 });