Android高手进阶教程(七)之----Android 中Preferences的使用!

getDefaultSharedPreferences(Context)

来获取它，比如当我们想获得整数我们可以用

getInt(String key, int defVal)

putInt(String key, int newVal)，

最后用

edit(),

方法提交!千万不要忘记了哦~

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>

package com.android.tutor;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.widget.TextView;
public class PreferencesDemo extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

SharedPreferences mPerferences = PreferenceManager
.getDefaultSharedPreferences(this);

int counter = mPerferences.getInt("counter", 0);

TextView mTextView = (TextView)findViewById(R.id.text);

mTextView.setText("This app has been started " + counter + " times.");

SharedPreferences.Editor mEditor = mPerferences.edit();

mEditor.putInt("counter", ++counter);
mEditor.commit();

}
}

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<int name="counter" value="3" />
</map>