网站制做,网站的换肤功能怎么做,建筑网站案例,公司网站后台密码项目中要实现mfc功能#xff0c;然后子控件焦点下移#xff0c;LIstView和Gridview父控件不会下移#xff0c;所以就有这个文章。废话不多说直接上代码。
MFCGridView.java
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;…项目中要实现mfc功能然后子控件焦点下移LIstView和Gridview父控件不会下移所以就有这个文章。废话不多说直接上代码。
MFCGridView.java
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewParent;
import android.view.ViewTreeObserver;
import android.widget.GridView;import com.baidu.navisdk.ui.util.MFCUtil;public class MFCGridView extends GridView {protected int lastPosition -1;protected boolean mHasRegister false;private final ViewTreeObserver.OnGlobalFocusChangeListener mFocusChangeListener new ViewTreeObserver.OnGlobalFocusChangeListener() {Overridepublic void onGlobalFocusChanged(View oldFocus, View newFocus) {if (!isInTouchMode()) {refreshListViewScroll(oldFocus, newFocus);}}};protected void refreshListViewScroll(View oldFocus, View newFocus) {if (getVisibility() ! VISIBLE) {return;}if (newFocus null) {return;}ViewParent convertView getConvertView(newFocus);if (convertView null) {return;}if (!(convertView instanceof View)) {return;}Object tagView ((View) convertView).getTag();if (!(tagView instanceof IMFCHolder)) {if (lastPosition! getAdapter().getCount() - 1) {smoothScrollToPositionFromTop(0, 0);lastPosition -1;}return;}int focusedPosition -1;View focusedChild getFocusedChild();if (focusedChild ! null) {focusedPosition getPositionForView(focusedChild);}if (focusedPosition ! lastPosition) {smoothScrollToPositionFromTop(focusedPosition, 50);lastPosition focusedPosition;}}protected ViewParent getConvertView(View newFocus) {ViewParent lastView null;ViewParent parent newFocus.getParent();if (parent this){return (ViewParent) newFocus;}while (parent ! null) {if (parent this) {return lastView;}lastView parent;parent parent.getParent();}return null;}public MFCGridView(Context context) {super(context);setFocusableInTouchMode(false);}public MFCGridView(Context context, AttributeSet attrs) {super(context, attrs);setFocusableInTouchMode(false);}public MFCGridView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);setFocusableInTouchMode(false);}Overrideprotected void onAttachedToWindow() {super.onAttachedToWindow();if (MFCUtil.isMFCEnable()) {if (!mHasRegister) {getViewTreeObserver().addOnGlobalFocusChangeListener(mFocusChangeListener);mHasRegister true;}}}Overrideprotected void onDetachedFromWindow() {super.onDetachedFromWindow();if (MFCUtil.isMFCEnable()) {getViewTreeObserver().removeOnGlobalFocusChangeListener(mFocusChangeListener);mHasRegister false;}clearDisappearingChildren();}
}
MFCGridView使用方法xml中直接引用即可无需其他操作 ---------------------------------------------------------分割线---------------------------------------------------------
依赖类IMFCHolder.java
public interface IMFCHolder {int getPosition();
}MFCListView.java import com.baidu.navisdk.ui.util.MFCUtil;import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewParent;
import android.view.ViewTreeObserver;
import android.widget.ListView;public class MFCListView extends ListView {protected boolean mHasRegister false;protected int lastPosition -1;private final ViewTreeObserver.OnGlobalFocusChangeListener mFocusChangeListener new ViewTreeObserver.OnGlobalFocusChangeListener() {Overridepublic void onGlobalFocusChanged(View oldFocus, View newFocus) {if (!isInTouchMode()) {refreshListViewScroll(oldFocus, newFocus);}}};protected void refreshListViewScroll(View oldFocus, View newFocus) {if (getVisibility() ! VISIBLE) {return;}if (newFocus null) {return;}ViewParent convertView getConvertView(newFocus);if (convertView null) {return;}if (!(convertView instanceof View)) {return;}Object tagView ((View) convertView).getTag();if (!(tagView instanceof IMFCHolder)) {if (lastPosition! getAdapter().getCount() - getHeaderViewsCount() - getFooterViewsCount()- 1) {smoothScrollToPositionFromTop(0, 0);lastPosition -1;}return;}IMFCHolder imfcHolder (IMFCHolder) tagView;int position imfcHolder.getPosition();if (position ! lastPosition) {smoothScrollToPositionFromTop(position getHeaderViewsCount(), 50);lastPosition position;}}protected ViewParent getConvertView(View newFocus) {ViewParent lastView null;ViewParent parent newFocus.getParent();if (parent this){return (ViewParent) newFocus;}while (parent ! null) {if (parent this) {return lastView;}lastView parent;parent parent.getParent();}return null;}public MFCListView(Context context) {super(context);setFocusableInTouchMode(false);}public MFCListView(Context context, AttributeSet attrs) {super(context, attrs);setFocusableInTouchMode(false);}public MFCListView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);setFocusableInTouchMode(false);}public MFCListView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {super(context, attrs, defStyleAttr, defStyleRes);setFocusableInTouchMode(false);}Overridepublic View getFocusedChild() {return null;}Overrideprotected void onAttachedToWindow() {super.onAttachedToWindow();if (MFCUtil.isMFCEnable()) {if (!mHasRegister) {getViewTreeObserver().addOnGlobalFocusChangeListener(mFocusChangeListener);mHasRegister true;}}}Overrideprotected void onDetachedFromWindow() {super.onDetachedFromWindow();if (MFCUtil.isMFCEnable()) {getViewTreeObserver().removeOnGlobalFocusChangeListener(mFocusChangeListener);mHasRegister false;}clearDisappearingChildren();}
}依赖类MFCUtil.java
package com.baidu.navisdk.ui.util;import android.app.Activity;import com.baidu.naviauto.appcommon.AppLog;import java.util.ArrayList;
import java.util.List;public class MFCUtil {private static final String TAG MFCUtil;public static final ListString REQUEST_CHECK_LIST_STRING new ArrayList();public static boolean isMFCEnable() {return true;}/*** 返回false 不消费 调用者可以request* 返回true 消费 调用者不可以request* param activity* param classname* return*/public static boolean requestCheck(Activity activity, String classname) {if (activity null) {return true;}if (!isMFCEnable()) {return true;}if (activity.getWindow().getDecorView().isInTouchMode()){return true;}checkRequestCheckList(activity);if (REQUEST_CHECK_LIST_STRING null) {AppLog.e(TAG, checkRequestCheckList classname);return false;}for (int i 0; i REQUEST_CHECK_LIST_STRING.size(); i) {if (REQUEST_CHECK_LIST_STRING.get(i).equals(classname)) {AppLog.e(TAG, false classname);return false;}}AppLog.e(TAG, false finish classname);return false;}public static void checkRequestCheckList(Activity activity) {if (REQUEST_CHECK_LIST_STRING ! null REQUEST_CHECK_LIST_STRING.size() 0) {REQUEST_CHECK_LIST_STRING.add(PowerNotification);REQUEST_CHECK_LIST_STRING.add(RestrictionTipsView);REQUEST_CHECK_LIST_STRING.add(RecommendTripTipsView);REQUEST_CHECK_LIST_STRING.add(PushPoiNaviNotificationView);REQUEST_CHECK_LIST_STRING.add(PushPoiNaviNotificationDialog);REQUEST_CHECK_LIST_STRING.add(NaviAutoActivity);}}public static void onDestory(){if (REQUEST_CHECK_LIST_STRING ! null){REQUEST_CHECK_LIST_STRING.clear();}}
}MFCListView实际使用例子
1.xml代码中使用MFCListView类代替
2.adapter中核心代码如下 Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewHolder;if (convertView null) {convertView LayoutInflater.from(mContext).inflate(R.layout.item_column, null);viewHolder new ViewHolder();viewHolder.textView convertView.findViewById(R.id.text);convertView.setTag(viewHolder);} else {viewHolder (ViewHolder) convertView.getTag();}viewHolder.position position;viewHolder.textView.setText(mProvinShotNameArr[position]);return convertView;}public static class ViewHolder implements IMFCHolder {TextView textView;int position;Overridepublic int getPosition() {return position;}}
实现成功子控件焦点滑到中间gridview父控件也跟着下滑了
