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  • How to Save Data in Android

    @rajshekhar.tiwari
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    In below example I have created a save data app code in android. In this save data we can save our data and then load the back-up. In this I have also described how to make save data.

    1. public class MainActivity extends Activity {
    2.       EditText editText;
    3.      TextView textView;
    4.  
    5.     @Override
    6.     protected void onCreate(Bundle savedInstanceState) {
    7.         super.onCreate(savedInstanceState);
    8.         setContentView(R.layout.activity_main);
    9.         editText =(EditText)findViewById(R.id.edittext);
    10.         textView =(TextView)findViewById(R.id.textview);
    11.         textView.setVisibility(View.GONE);
    12.     }
    13.  
    14.     public void writeMessage(View view)
    15.     {
    16.     String Message = editText.getText().toString();
    17.         String file_name ="hello_file";
    18.         try{
    19.             FileOutputStream fileOutputStream =openFileOutput(file_name,MODE_PRIVATE);
    20.             fileOutputStream.write(Message.getBytes());
    21.             fileOutputStream.close();
    22.             Toast.makeText(getApplicationContext(),"Message Saved",Toast.LENGTH_LONG).show();
    23.             editText.setText("");
    24.  
    25.  
    26.         }catch (FileNotFoundException e){
    27.             e.printStackTrace();
    28.         } catch (IOException e) {
    29.             e.printStackTrace();
    30.         }
    31.  
    32.     }
    33.     public void readMessage(View view)
    34.     {
    35.         try{
    36.            String Message;
    37.             FileInputStream fileInputStream = openFileInput("hello_file");
    38.             InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
    39.             BufferedReader bufferedReader =new BufferedReader(inputStreamReader);
    40.             StringBuffer stringBuffer =new StringBuffer();
    41.             while((Message=bufferedReader.readLine())!=null)
    42.             {
    43.                 stringBuffer.append(Message +"\n");
    44.  
    45.             }
    46.             textView.setText(stringBuffer.toString());
    47.             textView.setVisibility(View.VISIBLE);
    48.  
    49.         } catch (FileNotFoundException e) {
    50.             e.printStackTrace();
    51.         } catch (IOException e) {
    52.             e.printStackTrace();
    53.         }
    54.  
    55.  
    56.     }
    57.  
    58.  
    59.  
    60.  
    61.     @Override
    62.     public boolean onCreateOptionsMenu(Menu menu) {
    63.         // Inflate the menu; this adds items to the action bar if it is present.
    64.         getMenuInflater().inflate(R.menu.menu_main, menu);
    65.         return true;
    66.     }
    67.  
    68.     @Override
    69.     public boolean onOptionsItemSelected(MenuItem item) {
    70.         // Handle action bar item clicks here. The action bar will
    71.         // automatically handle clicks on the Home/Up button, so long
    72.         // as you specify a parent activity in AndroidManifest.xml.
    73.         int id = item.getItemId();
    74.  
    75.         //noinspection SimplifiableIfStatement
    76.         if (id == R.id.action_settings) {
    77.             return true;
    78.         }
    79.  
    80.         return super.onOptionsItemSelected(item);
    81.     }
    82. }
    save data Android
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