如何檢索

Question

你怎麼弄的默認值的單一的Android共享偏好，因爲它是明確相應的XML文件中定義的XML文件中定義的優先級的缺省值？例如：

<CheckBoxPreference 
    android:defaultValue="false" 
    android:key="fulldb" 
    android:summary="No selection rules apply" 
    android:title="Use Full Database" /> 

Answer 1

這樣的..

public class Calc extends Activity { 
public static final String PREFS_NAME = "MyPrefsFile"; 

@Override 
protected void onCreate(Bundle state){ 
    super.onCreate(state); 
    . . . 

    // Restore preferences 
    SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0); 
    boolean silent = settings.getBoolean("silentMode", false); //default value if nothing is in the preference is the last parameter false. 
    setSilent(silent); 
} 

@Override 
protected void onStop(){ 
    super.onStop(); 

    // We need an Editor object to make preference changes. 
    // All objects are from android.context.Context 
    SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0); 
    SharedPreferences.Editor editor = settings.edit(); 
    editor.putBoolean("silentMode", mSilentMode); 

    // Commit the edits! 
    editor.commit(); 
} 

}

Answer 2

見下文： 存儲該值：

public static SharedPreferences myPrefs; 
public static SharedPreferences.Editor prefsEditor; 

myPrefs = this.getSharedPreferences("myPrefs",MODE_WORLD_WRITEABLE); 

prefsEditor = myPrefs.edit();     
       prefsEditor.putBoolean("FullResultIsOn", true); // value to store     
       prefsEditor.commit(); 

現在以檢索值：

myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE); 
    fullResultSound = myPrefs.getBoolean("FullResultIsOn", false); 

享受。 :) 謝謝。