android development basics tutorial SharedPreferences read and write

 
public class MainActivity extends Activity { 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 
} 
public void onClick(View v) { 
switch (v.getId()) { 
case R.id.button1: 
SharedPreferences sp = this.getSharedPreferences("myxml", Context.MODE_PRIVATE); 
Editor editor = sp.edit(); 
editor.putString("name", "nanguabing"); 
editor.putInt("age", 20); 
// Persist operations to storage devices  
editor.commit(); 
Toast.makeText(this, " write sp complete ", 1).show(); 
break; 
case R.id.button2: 
SharedPreferences sp1 = this.getSharedPreferences("myxml", Context.MODE_PRIVATE); 
String name = sp1.getString("name", "nobody"); 
int age = sp1.getInt("age", 0); 
Toast.makeText(this, "name=" + name + ",age=" + age, 1).show(); 
break; 
default: 
break; 
} 
} 
@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
// Inflate the menu; this adds items to the action bar if it is present. 
getMenuInflater().inflate(R.menu.activity_main, menu); 
return true; 
} 
} 

 
<?xml version='1.0' encoding='utf-8' standalone='yes' ?> 
<map> 
<string name="name">nanguabing</string> 
<int name="age" value="20" /> 
</map>