sp存储

package com.hanqi;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;

import com.hanqi.myapplication.R;

public class Test1 extends AppCompatActivity {
         EditText et_1;
       EditText  et_2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test1);
        et_1=(EditText)findViewById(R.id.et_1);
        et_2=(EditText)findViewById(R.id.et_2);
    }
    public void bt1_OnClick(View v){
        SharedPreferences sharedPreferences=getSharedPreferences("abc",MODE_APPEND);
        SharedPreferences.Editor editor=sharedPreferences.edit();
        String str1=et_1.getText().toString();
        String str2=et_2.getText().toString();
        editor.putString("a",str1);
        editor.putString("b", str2);
        editor.commit();
        Intent intent=new Intent(this,Test1.class);
        startActivity(intent);
        //SharedPreferences sharedPreferences = getSharedPreferences("abc", MODE_PRIVATE);
        et_1.setText(sharedPreferences.getString("a", null));
        et_2.setText(sharedPreferences.getString("b", null)) ;




    }
}