Android之SharedPreferences对参数数据的存取

1>对参数的存储和取用，当然第一个想到的就是SharedPreferences。下面是个例子。

package com.duantl.preferences;import android.app.Activity;import android.content.Context;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {private EditText nameText = null;private EditText ageText = null;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);nameText = (EditText) findViewById(R.id.name);ageText = (EditText) findViewById(R.id.age);Button button = (Button) this.findViewById(R.id.button);button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {String name = nameText.getText().toString();String age = ageText.getText().toString();SharedPreferences preferences = getSharedPreferences("duantl", Context.MODE_WORLD_READABLE);Editor editor = preferences.edit();editor.putString("name", name);editor.putInt("age", new Integer(age));editor.commit();Toast.makeText(MainActivity.this, R.string.success, 1).show();}});Button resumebutton = (Button) this.findViewById(R.id.resume);resumebutton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {SharedPreferences preferences = getSharedPreferences("duantl", Context.MODE_PRIVATE);String name = preferences.getString("name", "");int age = preferences.getInt("age", 20);nameText.setText(name);ageText.setText(String.valueOf(age));}});}}

2>SharedPreferences一般是存取什么样的数据呢。

一般存取的是，手机软件的各项参数。

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