在 其他页面修改TabHost 切换选项卡，有时改变选项卡文本颜色无效

Question

我在动态改变选项卡选项的背景，文本颜色，图标时有一定机率无作用，找了好久找不出原因，求指点。实现方式是：将选项卡的view 放到application的数组里面，动态改变时传相应的索引过来重新设定选项的背景，文字颜色等。下面是主要代码。
选项卡布局：<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="#000000"
        android:orientation="vertical" >        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1" >
        </FrameLayout>        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:visibility="gone" />        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/index_nav_bg">            <LinearLayout
                android:id="@+id/channel1"
                android:background="@drawable/index_nav_curr"
                style="@style/index_tab_but_linear" >                <ImageView
                    android:id="@+id/imageView1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:src="@drawable/index_nav_main_off" />                <TextView
                    android:id="@+id/textView1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:textColor="@color/orange"
                    android:text="首页" />
            </LinearLayout>            <LinearLayout
                android:id="@+id/channel2"
                style="@style/index_tab_but_linear" >                <ImageView
                    android:id="@+id/imageView2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:src="@drawable/index_nav_search_off" />                <TextView
                    android:id="@+id/textView2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="搜索"
                     />
            </LinearLayout>            <LinearLayout
                android:id="@+id/channel3"
                style="@style/index_tab_but_linear"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:orientation="vertical" >
                <ImageView
                    android:id="@+id/imageView3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:src="@drawable/index_nav_cart_off" />                <TextView
                    android:id="@+id/textView3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="购物篮" />
            </LinearLayout>            <LinearLayout
                android:id="@+id/channel4"
                style="@style/index_tab_but_linear"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:orientation="vertical" >                <ImageView
                    android:id="@+id/imageView4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:src="@drawable/index_nav_cat_off" />                <TextView
                    android:id="@+id/textView4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="分类" />
            </LinearLayout>            <LinearLayout
                android:id="@+id/channel5"
                style="@style/index_tab_but_linear"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:orientation="vertical">                <ImageView
                    android:id="@+id/imageView5"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:src="@drawable/index_nav_my_off" />                <TextView
                    android:id="@+id/textView5"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="个人中心" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout></TabHost>
在选项卡的.java文件夹里将TextView 放到application 的一个数组里：
mApplication.getTabTxtArr().add(mCateText1);
mApplication.getTabTxtArr().add(mCateText2);
mApplication.getTabTxtArr().add(mCateText3);
mApplication.getTabTxtArr().add(mCateText4);
mApplication.getTabTxtArr().add(mCateText5);动态改变选项卡项方法：public void setIndexTab(int index)
{
 int COLOR1 = this.getApplicationContext().getResources().getColor(R.color.index_bottom_menu_off);
 int COLOR2 = this.getApplicationContext().getResources().getColor(R.color.index_bottom_menu_on);

TabHost mTabHost = this.getOnlyTabHost();
ArrayList<ImageView> tabImgArr = this.getTabImgArr();
ArrayList<TextView> tabTxtArr = this.getTabTxtArr();
ArrayList<LinearLayout> tabLinLayArr = this.getTabLinLayArr();

int[] nImg = new int[]{R.drawable.index_nav_main_off,R.drawable.index_nav_search_off,R.drawable.index_nav_cart_off,R.drawable.index_nav_cat_off,R.drawable.index_nav_my_off};
int[] cImg = new int[]{R.drawable.index_nav_main_on,R.drawable.index_nav_search_on,R.drawable.index_nav_cart_on,R.drawable.index_nav_cat_on,R.drawable.index_nav_my_on};
int[] channel = new int[]{R.id.channel1,R.id.channel2,R.id.channel3,R.id.channel4,R.id.channel5};


//将选项卡全部选项还原为未选中的颜色，背景，图标  和设置选中项的颜色，背景，图标  问题就在这里有一定的机率这里重设时无效果，但我在循环里输出却能看到相应的文本，如我输出:log.d('tab',tabTxtArr.get(i).getText()) 会设选项卡的五个文本输出，但重新设置的颜色等却无效果
for(int i=0;i<tabImgArr.size();i++)
{
tabImgArr.get(i).setImageResource(nImg[i]);
tabTxtArr.get(i).setTextColor(COLOR1);
tabLinLayArr.get(i).setBackgroundResource(R.drawable.none);
}

tabTxtArr.get(index).setTextColor(COLOR2);
tabImgArr.get(index).setImageResource(cImg[index]);
tabLinLayArr.get(index).setBackgroundResource(R.drawable.index_nav_curr);



mTabHost.setCurrentTab(index);


this.setCurTabId(channel[index]);
｝

Answer 1

在每次重新安装时，即在每次eclipse 重新run 时就不会出现这问题，但退出程序号再打开问题就出来了