shareperference使用

来源：互联网发布：数据监控系统编辑：程序博客网时间：2024/05/24 07:43

activity1：

package com.example.test;import java.io.FileInputStream;import java.io.FileOutputStream;import java.util.Properties;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {private SharedPreferences sharedPreferences, shareSession;private SharedPreferences.Editor editor, sEditor;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// 读取shareperference文件// 根节点sharedPreferences = getSharedPreferences("AA", Context.MODE_PRIVATE);shareSession = getSharedPreferences("AA", Context.MODE_PRIVATE);// 加入子节点editor = sharedPreferences.edit();editor.putString("a1", "a11");editor.commit();sEditor = shareSession.edit();sEditor.putString("a1", "a11");sEditor.commit();// 点击按钮跳转Button btn = (Button) findViewById(R.id.btn_show);btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(MainActivity.this, Activity2.class);startActivity(intent);}});}/** * @description 读取 文件 * @param context * @param file * @return */public Properties loadConfig(Context context, String file) {Properties properties = new Properties();try {FileInputStream s = new FileInputStream(file);properties.load(s);} catch (Exception e) {e.printStackTrace();}return properties;}/** * @description 写入文件 * @param context * @param file * @param properties */public void saveConfig(Context context, String file, Properties properties) {try {FileOutputStream s = new FileOutputStream(file, false);properties.store(s, "");} catch (Exception e) {e.printStackTrace();}}}

activity2：

package com.example.test;import android.app.Activity;import android.content.Context;import android.content.SharedPreferences;import android.os.Bundle;public class Activity2 extends Activity {private SharedPreferences sp1, sp2;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);// 获取sharepreference数据sp1 = getSharedPreferences("AA", Context.MODE_PRIVATE);sp2 = getSharedPreferences("AA", Context.MODE_PRIVATE);String str1 = sp1.getString("a1", "");String str2 = sp2.getString("a1", "");System.out.println("str1=" + str1 + ",str2=" + str2);}}

结果：

str1=a11,str2=a11