在android中使用共享首选项保存数据 [英] save the data using shared preference in android

问题描述

我是 android 应用程序的新开发人员.我想使用共享首选项概念保存数据.我将数据保存在一个活动中并在另一个活动中获取相同的数据.这里我想发送字符串 a[]={"one","two","three"} 一个活动到另一个活动.我写的代码如下

i am new developer in android applications.i would like to save the data using shared preference concept.i am saving the data in one activity and get the same data in another activity.here i would like to send the String a[]={"one","two","three"} one activity to another activity.i have written code as follows

Main1.java

public class Main1 extends Activity
 {

  @Override

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    SharedPreferences shp=getSharedPreferences("TEXT", 0);
    final Editor et=shp.edit();

    ((Button)findViewById(R.id.button1)).setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            String s1=((EditText)findViewById(R.id.editText1)).getText().toString();
            et.putString("DATA", s1);

            String s2[]={"one","two","three"};

            //here i would like to save the string array

            et.commit();
            Intent it=new Intent(Main1.this,Main2.class);
            startActivity(it);

        }
    });


}

Main2.java

@Override

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main2);
    String kk=getSharedPreferences("TEXT", 0).getString("DATA", null);

    //here i would like to get the string array of Main1.java

    ((EditText)findViewById(R.id.editText1)).setText(kk);
}

我们可以从 Main1.java 到 Main2.java 获取字符串数组值吗?

can we get the string array values from Main1.java to Main2.java?

推荐答案

放到开始的意图中:

Intent it = new Intent(Main1.this,Main2.class);
it.putExtra("MY_STRING_ARRAY", s2);

在第二个活动中取回:

String[] myStringArray = getIntent().getStringArrayExtra("MY_STRING_ARRAY");

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