编写自定义的 Android Preference 组件

核心提示：public ImageOptionPreference(Context context, AttributeSet attrs) {super(context, attrs);}public ImageOptionPreference(Context context) {super(context);}void se

public ImageOptionPreference(Context context, AttributeSet attrs) {

super(context, attrs);

}

public ImageOptionPreference(Context context) {

super(context);

}

void setActivity(PreferenceActivity parent) {

this.parent = parent;

}

@Override

public boolean isPersistent() {

return false;

}

/**

* 修改图片

* @param newImage

* @return

*/

boolean ChangeGamePic(int newImage ){

if(this.mImage == newImage)

return false;

GameGlobal.save_pic(newImage);

this.mImage = newImage;

preview_img.setImageResource(newImage);

return true;

}

@Override

protected void onBindView(View view) {

super.onBindView(view);

this.mImage = GameGlobal.get_pic();

preview_img = (ImageView)view.findViewById(R.id.pref_current_img);

preview_img.setImageResource(this.mImage);

}

@Override

protected void onClick() {

super.onClick();

Bundle bundle = new Bundle();

bundle.putInt(GameGlobal.PREF_KEY_IMAGE, this.mImage);

Intent intent = new Intent(parent, ImageSelector.class);

intent.putExtras(bundle);

parent.startActivityForResult(intent, MagicSetting.REQUEST_CODE_GAME_IMAGE);

}

}

对应的 Perference 配置信息如下

< com.liusoft.android.fmagic.ImageOptionPreference

android:key="game_pic"

android:persistent="false"

android:title="@string/pref_pic_title"

android:summary="@string/pref_pic_summary"

android:widgetLayout="@layout/preference_widget_image"

/ >

而 preference_widget_image 的信息如下

< ?xml version="1.0" encoding="utf-8"? >