关闭并重新打开应用程序时，在共享首选项中保存的数据未显示吗？

Question

I am saving data in android by using sharedpreferences in android.

I am able to save data sucessfully, but i don't know if close app and reopen saved data is not displaying.

My code:

   public class MainActivity extends Activity {

EditText editText;
Button button;
Button button1;
TextView text;
public static final String mypreference = "MY_PREFS_NAME";
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    editText = (EditText) findViewById(R.id.editText);
    button = (Button) findViewById(R.id.button);
    button1 = (Button) findViewById(R.id.button2);
    text = (TextView) findViewById(R.id.textView);
    button.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {

            SharedPreferences shared = getSharedPreferences(mypreference, MODE_PRIVATE);
            SharedPreferences.Editor editor = shared.edit();
            editor.putString("mn",editText.getText().toString());
            editor.commit();

            SharedPreferences prefs = getSharedPreferences(mypreference, MODE_PRIVATE);
            String ap = prefs.getString("mn","");
            text.setText(ap);




        }

    });

Answer 1

You are doing this inside onClick

SharedPreferences prefs = getSharedPreferences(mypreference, MODE_PRIVATE);
String ap = prefs.getString("mn","");
text.setText(ap);

So it will not do it automatically onLoad the next time. If you want to do that, you might move these lines in your onCreate method outside the clickListener implementation as shown below.

 SharedPreferences prefs = getSharedPreferences(mypreference, MODE_PRIVATE);
 String ap = prefs.getString("mn","");
 text.setText(ap);
 button.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View view) {

        SharedPreferences shared = getSharedPreferences(mypreference, MODE_PRIVATE);
        SharedPreferences.Editor editor = shared.edit();
        editor.putString("mn",editText.getText().toString());
        editor.commit();

        SharedPreferences prefs = getSharedPreferences(mypreference, MODE_PRIVATE);
        String ap = prefs.getString("mn","");
        text.setText(ap);

    }

});