为什么没有法改变TextView的字体颜色？

package com.like.duoroulianmeng;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TextView;

public class Buttom_meun extends FragmentActivity {

TextView[] textView;// 定义一个数组装底部菜单的 TextView的ID
ImageView[] imageView;
int index;// 点击后视图下标
int currentTabIndex;// 当前视图下标
private FragmentManager fragmentManager;
Fragment[] mFragments;
private FragmentTransaction fragmentTransaction;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.activity_buttom_meun);

    mFragments = new Fragment[5];
    fragmentManager = this.getSupportFragmentManager();
    mFragments[0] = fragmentManager.findFragmentById(R.id.shouye_fragment);
    mFragments[1] = fragmentManager.findFragmentById(R.id.xianshitemai_fragment);
    mFragments[2] = fragmentManager.findFragmentById(R.id.shequ_fragment);
    mFragments[3] = fragmentManager.findFragmentById(R.id.gouwuche_fragment);
    mFragments[4] = fragmentManager.findFragmentById(R.id.wode_fragment);

    fragmentTransaction = fragmentManager.beginTransaction()
            .hide(mFragments[0]).hide(mFragments[1]).hide(mFragments[2])
            .hide(mFragments[3]).hide(mFragments[4]);
    fragmentTransaction.show(mFragments[0]).commit();


    textView = new TextView[5];
    textView[0] = (TextView) findViewById(R.id.tv_shouye);
    textView[1] = (TextView) findViewById(R.id.tv_xianshitemai);
    textView[2] = (TextView) findViewById(R.id.tv_shequ);
    textView[3] = (TextView) findViewById(R.id.tv_gouwuche);
    textView[4] = (TextView) findViewById(R.id.tv_wode);
    textView[0].setTextColor(0xFFFF5001);

    imageView = new ImageView[5];
    imageView[0] = (ImageView) findViewById(R.id.imageview4);
    imageView[1] = (ImageView) findViewById(R.id.imageview5);
    imageView[2] = (ImageView) findViewById(R.id.imageview6);
    imageView[3] = (ImageView) findViewById(R.id.imageview7);
    imageView[4] = (ImageView) findViewById(R.id.imageview8);
    System.out.println(imageView[1]+"11111");
    imageView[0].setSelected(true);
}

public void onTabClicked(View view) {

    fragmentTransaction = fragmentManager.beginTransaction()
            .hide(mFragments[0]).hide(mFragments[1]).hide(mFragments[2])
            .hide(mFragments[3]).hide(mFragments[4]);
    switch (view.getId()) {
    case R.id.shouye:
        index = 0;
        break;
    case R.id.xianshitemai:
        index = 1;
        break;
    case R.id.shequ:
        index = 2;
        break;
    case R.id.gouwuche:
        index = 3;
        break;
    case R.id.wode:
        index = 4;
        break;
    }

    textView[currentTabIndex].setTextColor(0xFF9A9A9A);
    imageView[currentTabIndex].setSelected(false);
    textView[index].setTextColor(0xFFFF5001);
    imageView[index].setSelected(true);
    System.out.println(imageView[index]+"222222");
    fragmentTransaction.show(mFragments[index]).commit();
    currentTabIndex = index;

}

}

textView[0].setTextColor(Color.Blue);
试一下看好使不