Class Overview

Interface for accessing and modifying preference data returned by getSharedPreferences(String, int).

1、调用SharedPreferences对象的edit()方法获得SharedPreferences.Editor对象：

//Editor android.content.SharedPreferences.edit()
SharedPreferences.Editor mEditor = getSharedPreferences("data",MODE_PRIVATE).edit();

mEditor.putBoolean("boolean", true);
mEditor.putFloat("float", 0.01F);
mEditor.putString("String", "a string");

3、调用commit()将数据提交，完成数据存储

mEditor.commit();

存储和获取存储数据部分代码：

Button mButton = (Button)findViewById(R.id.save);
mButton.setOnClickListener(new OnClickListener(){
<span style="white-space:pre"> </span>@Override
<span style="white-space:pre"> </span>public void onClick(View view){//Editor android.content.SharedPreferences.edit()SharedPreferences.Editor mEditor = getSharedPreferences("data",MODE_PRIVATE).edit();mEditor.putBoolean("boolean", true);mEditor.putFloat("float", 0.01F);mEditor.putString("String", "a string");mEditor.commit();}});Button getButton = (Button)findViewById(R.id.get);
getButton.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View view){//SharedPreferences android.content.ContextWrapper.getSharedPreferences(String name, int mode)SharedPreferences mSharedPreferences = getSharedPreferences("data",MODE_PRIVATE);boolean boolStr = mSharedPreferences.getBoolean("boolean", false);float floatStr = mSharedPreferences.getFloat("float", 0.0f);String str = mSharedPreferences.getString("String", "str");TextView tv = (TextView)findViewById(R.id.tv);tv.setText(" str is: "+str +"\n"+ " boolean is :"+ boolStr +"\n"+" float is: "+ floatStr );}});

用SharedPreferences实现记住密码功能: